Comparing Steel and Fiberglass Rebar

Comparing Steel and Fiberglass Rebar - SURPRISING results

Рет қаралды 135,133

Ай бұрын

Welcome back to The Build Show! In this episode, we dive into the fascinating world of rebar with our engineer Witt Smith, comparing traditional steel rebar to the innovative glass fiber reinforced polymer (GFRP) rebar, specifically the MST bar.
We start by comparing the weight of GFRP rebar to steel. You'll discover that GFRP rebar is significantly lighter, making it much easier to handle on job sites. This difference in weight can improve efficiency and reduce strain on workers.
Next, we delve into the material properties of fiberglass rebar. Unlike steel, GFRP rebar has a higher tensile strength and bonds more effectively to concrete. This results in enhanced durability and performance of the reinforced structures.
Worker safety is a major consideration, especially in hot climates. Weitzman explains how GFRP rebar stays cooler in the sun compared to steel, reducing the risk of burns and the need for heavy gloves. This aspect makes GFRP a safer choice for construction crews.
We also discuss the design differences when switching from steel to fiberglass rebar. Our engineer explains how the change in material properties requires adjustments in the design process. It is crucial to incorporate these changes early in the project planning stages to avoid costly redesigns later.
Rust prevention is another significant advantage of GFRP rebar. Traditional steel rebar can rust over time, causing concrete structures to spall and degrade. GFRP rebar, on the other hand, is resistant to rust, making it ideal for use in areas prone to moisture and salt exposure.
In terms of cost, we explain that while GFRP rebar may not always result in immediate savings on smaller projects, it can be cost-effective on larger scales. The long-term benefits of reduced maintenance and increased longevity also contribute to its overall value.
Finally, we highlight the potential applications of GFRP rebar and the importance of early planning in incorporating new materials into your projects. Proper planning ensures that the benefits of GFRP rebar are fully realized.
Stay connected with us for more insights and updates. Follow our 24-part series on the Reisinger Build project to see this and other innovative materials in action. Don't forget to subscribe to our channel for new content every Tuesday and Friday, and stay updated by following us on Facebook and Instagram.
Join us as we explore the future of construction materials and techniques. Let's build smarter and safer together!
MSTBAR
www.mstrebar.com/products
Risinger Build
buildshownetwork.com/bsn-seri...
Subscribe and follow my Podcast on Apple or Spotify!
Apple: apple.co/32AOwgU
Spotify: spoti.fi/3FXNg4X
Sign up for our twice-weekly newsletter:
buildshownetwork.com/newsletter
To sponsor a video or advertise with us visit:
www.buildproductions.com
Want to learn more about building? thebuildshow.com/
The Build Show on Instagram: / thebuildshow
Huge thanks to our Show sponsors Builders FirstSource, Polyguard, Huber, Rockwool & Viewrail for helping to make these videos possible! These are all trusted companies that Matt has worked with for years and trusts their products in the homes he builds. We would highly encourage you to check out their websites for more info.
www.bldr.com/
polyguard.com/
www.Huberwood.com
www.Viewrail.com
www.Rockwool.com

Пікірлер: 396

@johnbeeck2540 Ай бұрын

A buddy of mine used the fiber rebar in the Bahamas right on the coast for corrosion resistance reasons. It has worked very well for him on a home that is now 20 years old!

@jsbrads1 Ай бұрын

I was thinking of the Florida building that failed.

@PrograError Ай бұрын

@@jsbrads1 i think that basically can't be saved... it might prevent spalling, but things gonna broke with lack of maintenance

@jsbrads1 Ай бұрын

@@PrograError heard it was the rust due to the humid air 🤷

@alexdrockhound9497 Ай бұрын

@@jsbrads1its not air, its just water in general and especially salt. Concrete chemically protects the rebar, but eventually with water exposure the concrete chemistry changes from the outside in until the rebar starts to rust, and salt speeds up the whole process. Then the rebar rusts and expands which breaks up the concrete and makes it really weak. The rebar is for tensile strength too so in places where tensile strength is the key factor the rebar rusting weakens the structure.

@bundles1978 Ай бұрын

was that Bob Samia? he has been trying to get Bahamas to use fiberglass rebar forever

@jesse6344 Ай бұрын

The requirement to wear gloves when handling this material implies the glass particles could be in the surrounding air. Especially when cutting it. It seems to me it would be prudent to wear respirator or mask when handling fiber glass rebar.

@ShBenEd Ай бұрын

Yes, like with cutting metal rebar.

@bornahany Ай бұрын

The glass coming off the cut bar or slivers should not be confused with the fiberglass insulation. they have completely different shape under microscope. fiberglass insulation are J-Hook shape vs fiberglass dust from cutting are Solid round particle. you can treat them just as concrete dust and wear a regular mask. imagine fiberglass boat industry that has been making boats and hot tubs for years. no issue with the people who worked in those industry for 70 years.

@Cs13762 Ай бұрын

nah you can inhale glass dust no problem. it's the same thing as steel dust.

@Migglesworth Ай бұрын

@@ShBenEd "Yes, like with cutting metal rebar." There is NO comparison between steel and glass dust!

@tealkerberus748 24 күн бұрын

Use a wet cutter and don't make dust. Problem solved.

@austinhastings8793 Ай бұрын

I talked to an old concrete guy who told me, "The thing about concrete work is that everything you do is simple, but every single thing is HEAVY."

@bjmcculloch Ай бұрын

Reminds me of Carl von Clausewitz, “Everything in war is simple, but the simplest thing is difficult.”

@comfortablynumb9342 Ай бұрын

Glass rebar ought to be a lot lighter than steel.

@victorhopper6774 Ай бұрын

@@comfortablynumb9342 300% i would guess. my only question is the shrink and swell difference as temp changes

@FranciscoTChavez Ай бұрын

@@comfortablynumb9342 25% lighter, so it's probably still a bit heavy.

@comfortablynumb9342 Ай бұрын

@@FranciscoTChavez 25% less weight than steel is a big help if you're the guy carrying it.

@benjaminledford6111 Ай бұрын

As an architect, the huge advantage I see is not rusting. I'm worried about how much we've built with steel-reinforced concrete and how much of it we'll have to tear down. Once water gets to the steel it's over - you can't stop it, you can't replace it, you can't salvage the concrete it's embedded in. And eventually the water will find its way in. Our oldest buildings are unreinforced masonry because there's no steel in them to rust and destroy the structure (not that all unreinforced masonry buildings last that long, obviously). Of course, unreinforced buildings have other problems, especially with settlement and seismic loads, so we can't just leave the rebar out. That's why these alternative products seem so promising. I would love to see them become the standard for public buildings, infrastructure projects, institutional buildings, and anything along the coast.

@drunkenmessiah Ай бұрын

The importance of this advantage simply cannot be overstated. Damage from corroding steel reinforcement in concrete has been conservatively estimated at $2.5 trillion PER YEAR! That's nearly %3 of the world GDP! Think of a market like China where excess amounts of infrastructure has been built in anticipation of future growth. How much of that will crumble away before said growth is ever even realized? It is INFURIATING how little this is being looked at in the current push for renewed infrastructure here in the USA. There is so much fretting over our roads and bridges that are crumbling after a mere 50 years of use and now we are in a hurry to replace them with materials that will only last another 50 years. A small increase in material cost today could easily double that lifespan and likely well beyond.

@comfortablynumb9342 Ай бұрын

I was involved in trying to save a building on Bradenton Beach in Florida that was leaning towards the Gulf of Mexico. The pilings under it in the parking area were falling apart and we were told to grind the steel back and we painted it with some nasty 2 part paint. Then they were patching it. That was about 25 years ago and I'd be willing to bet that the building is long gone by now. The "repair" was a joke, but not funny. I was in my early 20's with zero experience with concrete and rebar building repairs and I could see that we were putting bandaids on bullet holes.

@glynnepritchard2526 Ай бұрын

As a structural engineer, the repair to old reinforced structures did not have the quality of concrete as we have been using for the last 20 plus years and we did not understand properly the relationship between rebar and concrete. I designed numerous large dams about the world, the oldest reaching 4 decades, it has not one sign of spalling.

@comfortablynumb9342 Ай бұрын

@@glynnepritchard2526 please go fix Florida. There are lots of buildings with concrete and rebar damage.

@glynnepritchard2526 Ай бұрын

@@comfortablynumb9342 would love to but dependant on the original design, materials and construction, sometimes it’s cheaper to demolish. I have HR structures in places that have higher salinity and humidity than Florida with out issue.

@KirkWallace-lw4sl Ай бұрын

I think one of the major benefits is spalling resistance because of no internal pressure developing from rust. This is probably ok for flatwork and foundations but I bet it'll shine in exposed columns and beams, such as bridges.

@tealkerberus748 Ай бұрын

The big concern seems to be how any of these alternative rebars perform at failure. A steel reinforced concrete beam, when it fails in, say, an earthquake too big for it, the concrete shatters out and the steel bends, so if it's engineered right you should have a chance to evacuate the building or get out from under the bridge before the steel actually rips apart and everything falls down. A lot of the non-metallic rebars, when they fail, they shatter along with the concrete, so in the same earthquake these structures are at risk of collapsing without warning. Of course, if a steel reinforced structure is old enough that the steel has started to rust, it will collapse without warning under that sort of stress just the same as if it had no rebar at all.

@aliancemd Ай бұрын

I was looking at this stuff last year(mostly research papers and how the Germans use it) for its properties to not rust but also resistance to earthquakes. It’s generally a better material but if you don’t want it to snap in sideways motions(it can swing more and recover but snaps at its limits, unlike steel which can maintain some structural integrity), you need a lot more of it and potentially mix it with carbon reinforced rebar.

@alexdrockhound9497 Ай бұрын

I wonder too about pairing it with fiber reinforced concrete.

@tealkerberus748 24 күн бұрын

@@alexdrockhound9497 I think it's a very new material science and there's a lot of experimenting to do to find the optimal design for each common context. But there's a lot of potential to fix a lot of problems by getting rid of steel rebar.

@alexdrockhound9497 24 күн бұрын

@@tealkerberus748 i think the biggest hurdle for it will be that it can’t be bent on site, it has to be fabricated with the bend in it. Thats going to be a lot of trouble for economies of scale to make it cheaper, and a lot of trouble for the people working with it, and logistics challenges too for transporting the bent rebar.

@Chad_H Ай бұрын

Been in the rebar business for over 2 decades. Pricing and availability limit the viability of GFRP. The only places you really see it is in extremely corrosive environments, where epoxy coated rebar won't be sufficient, or in places where you can't use steel, like foundations and walls surrounding MRI machines.

@bornahany Ай бұрын

alot has changed in the last few years! contact your local WhiteCaps, Carrol supply or other rebar fabricator and ask for it.

@Chad_H Ай бұрын

@@bornahany I have worked for rebar fabricators my entire career. I've supplied bar to everything from small town churches to 50 story towers and everything in between. The only thing that has changed in the last few years is the contract drawings seem to be less and less complete at the start of each project.

@bornahany Ай бұрын

@@Chad_H that’s so true lol

@stevt77 Ай бұрын

What’s MRI machines?

@Chad_H Ай бұрын

@@stevt77 magnetic resonance imaging.

@cinemaipswich4636 Ай бұрын

As long as you don't bend it, glass/polymer fibre is strong. Once the polymer is crushed, the glass fibre is prone to shear.

@MinkieWinkle Ай бұрын

That makes me question its application/uses. If used in a lintel. They are meant to withstand flex.

@victorhopper6774 Ай бұрын

the tensil strenght of fiber optic is high but tying it in a knot breaks it very easy as the knot gets tighter. seems like it becomes a different substance, but it is glass so i would like to know what vibration testing has been done

@g2buildingproducts Ай бұрын

@@MinkieWinkle - When using MST BAR in lintel applications, the size and quantity of lineal bars may need to be adjusted depending on the span of the lintel. Our engineering department can give direction in this regard. Oftentimes a 1:1 conversion from steel to MST BAR applies.

@Enonymouse_ Ай бұрын

Worked with structural Fibre rod, installed several thousand feet of it on a 220ft radio tower in place of steel cable on a site where corrosion was a concern, mfg claimed tensile strength of 50k pounds. I was also there 15 plus years later when it had to be removed. Long story short, the rod had begun to turn to powder on its outer layers, it was very dangerous to handle new and old. Disposal and install was annoying with handling hazards (never allow it to slide through your hands gloved or not), it had added eye and respiratory hazards during disposal from the degraded rod. Steel is still better overall IMO and safer. My former neighbor was an iron worker who spent his career working on bridges & dams with rebar and poly coated rebar I suspect he would say the same.

@tigerstallion Ай бұрын

good info. to the industry, lets not hastily jump on the first alternative, nor abandon the mission because the first option didnt work out

@vitordelima 18 күн бұрын

It doesn't make sense to use this as a regular rebar, it should be some sort of hollow thick cylinder that gets filled with the concrete instead. GRFP isn't suitable for this kind of narrow and solid parts.

@bobbygetsbanned6049 9 күн бұрын

Epoxy rebar is crap too, galvanized rebar is the best bet for the near future.

@Veritasi Ай бұрын

I've used the basalt, the gfrp and steel rebar on multiple projects. We've figured out the gfrp with the Kodi Clip system ends up being the Best overall solution. There's a little cost of entry but overall at about 20,000 square feet you've broken even and you've tripled or more your speed of installation. We also have a lot less problem with blowouts from incorrectly embedded steel. We're getting to a point where as soon as we can figure out the carbon issue concrete might be back in Vogue for almost all projects.

@marvinhaagsma9177 Ай бұрын

looking forward to the Vogue cover page…

@MadLadsAnonymous Ай бұрын

Isn't the issue with GFRP/basalt rebar that it doesn't flex like steel, which I've heard you want for walls in earthquake prone areas? You generally don't need tensile strength as much as flexural (?), right?

@MadLadsAnonymous Ай бұрын

Also, where did you get the basalt rebar in the states? How did the price compare to GFRP?

@Veritasi Ай бұрын

@@MadLadsAnonymous that was a question that I had for the engineers because that's what I had always heard. They clean the overall strength is equivalent to steel. It just hasn't been tested to the extent of steel yet. It's being used in vertical applications all over the world and here by (at least) me. We were also told that we weren't allowed to use the Kodi clips on vertical due to them not being tested. Pretty ridiculous if you've seen how they work and on projects like I do with the amount of plasticizers we need to add to the mix for flow. You just need to get an engineer understands construction instead of whatever is on his computer screen only.

@Veritasi Ай бұрын

@@MadLadsAnonymous I come from the corporate world before I got into construction, specifically branding and sourcing. I just bring it in from overseas. It ends up being about a third the cost of steel here.

@williamboquist4090 Ай бұрын

I used a bit less than half a mile of fiber rebar in a 30' X 40' garage I built. It worked beautifully. However, as they said, for applications in which a lot of shear force will be applied to the bar, I would revert to steel.

@Julian_Hopf Ай бұрын

I would also mention building longevity. Steel rebar will corrode slowly even with proper cover, which limits the design life of cement to a couple hundred years depending on climate. In comparison, GFRP reinforced cement is expected to last for thousands of years. That may not be a factor for many projects but I think it is noteworthy.

@Cs13762 Ай бұрын

you're deluding yourself if you think epoxy is gonna last thousands of years. have you ever seen a piece of composite material that wasn't yellow and falling apart after 20 years? Thousands of years.... Thats pretty hilarious.

@bradhuffjr777 Ай бұрын

@@Cs13762 UV radiation ( sunlight ) causes epoxy to yellow and deteriorate. As long as there is not a chemical and/or sunlight exposure problem, epoxy based composites have an incredibly long lifespan.

@2drealms196 10 күн бұрын

@@bradhuffjr777 There is also oxidation which will also degrade epoxy over time. The simple exposure to air will degrade the epoxy over time.

@bradhuffjr777 10 күн бұрын

@@2drealms196 Oxygen is a chemical.

@robnowe5464 Ай бұрын

I spent a bit of time researching this... positives: + higher tensile strength, +lighter , +corrosion resistance, +lower-install-costs; negatives: -fire resistance very low, -no-ductility, -low-shear-resistance, -higher-cost-of-material, -not-site-bendable. Questions: bond strength vs black bar.

@FreekHoekstra Ай бұрын

Would be interesting to see fiberglass reinforced concrete as a mixture. I know some people in Switzerland were playing with this where they added, like little fiberglass threads inside of the concrete mix, allowing you to pour the concrete as though it is reinforced without actually having to do the work of the reinforcing. The other benefit is that it becomes a homogenous material. It truly is reinforced throughout the entire assembly.

@dperreno Ай бұрын

That product is widely available and used in low-strength applications like patios and front walks. I don't know how well it really works, though.

@Suavocado602 Ай бұрын

It does add homogenous tensile strength and reduces cracking but it's not a substitute for rebar when you need force distributed across the length of a beam or slab. On larger pours it can also cause the fibers to be unevenly distributed as a factor of fluid dynamics.

@FreekHoekstra Ай бұрын

@@Suavocado602 thank you for the answer there, that makes sense, it would be hard to create a close to homogenic mixture with such different materials. That said , concrete by default is aggregate and cement and stays pretty well mixed, by virtue of the rotating cementtruck drum. I guess I’m curious why this is all that different? Given large particles tendency to rise and different densities, etc. working well in concrete already?

@Suavocado602 Ай бұрын

@@FreekHoekstra the issue I'm referring to has more to do with the alignment of the fibers that change as it flows. That said, high performance fiber reinforced concrete has come a long way in the past decade. Iran made some very durable bunkers using the material so maybe it's been solved by now.

@jamesnichols7507 Ай бұрын

Search - - - steel fiber reinforced concrete

@ddmitch1 Ай бұрын

Steel rebar may turn into powdered iron after 50+ years in concrete. I saw concrete reinforced with steel rebar, at a 70+ year old church that was being remodeled in a west Chicago suburb. The steel rebar had turned into powdered iron and had zero added strength to the concrete floors it was in. Very scary! GFRT can be driven into the ground with no effect to rebar, unlike steel rebar which cannot touch soil.

@ramireznoy Ай бұрын

Probably because of a very poor cement or concrete mix quality. The correct mix and materials are as important as the rebar.

@do4267 Ай бұрын

@@ramireznoythat maybe but you wouldn’t find out till years later. Need something better.

@ramireznoy Ай бұрын

@@do4267 Oh! sure you can from the beginning. Just follow the recommended dosage. You can not expect to have anything durable just with a mortar mix or leaving the steel to close to the surface. Some people even use ordinary Portland cement for reinforced concrete. So no wonder why the foul result. There are plenty of reinforced concrete structures standing time pretty well all over the world. Even near the sea and some IN the sea

@psidvicious Ай бұрын

Surprisingly, reinforced concrete structures are only rated for about a 100 year useable lifespan. This is because the steel reinforcement does deteriorate over time. Romans didn’t use rebar and some structures are still standing.

@caustinolino3687 Ай бұрын

The worrying thing is seismic. If it turns into 100% powder at 70 years, how much strength has it lost at 20, 30, etc years? It wouldn't matter until a once every 20 or 30 years earthquake happens and then your basement wall reinforcement fails.

@tspis Ай бұрын

Questions: 1. How does the cost compare to steel rebar? 2. Can you mix and match rebar types in the same build (assuming it's accounted for in the design)? E.g. Using fiberglass for straight sections, using steel for bent ones. 3. Being only 25% less weight than steel doesn't sound right - are you sure it's not 25% of steel weight instead?

@g2buildingproducts Ай бұрын

1. Generally speaking, the cost of MST BAR is very comparable to steel rebar. The price of steel rebar is known to fluctuate significantly, whereas the price of MST BAR holds quite consistently. An ICF building for example, often will see an approx. 15% reduction in rebar price when compared to steel rebar cost.

@g2buildingproducts Ай бұрын

2. Yes, using both MST BAR and steel rebar in the same wall is acceptable. There is no chemical reaction between the steel and MST BAR in concrete. Obviously, to avoid corrosion, we recommend using only MST BAR.

@g2buildingproducts Ай бұрын

3. Yes, the weight of MST BAR is 75% LESS THAN the weight of steel rebar. This was misspoken during the video clip you are correct.

@EricDavisED Ай бұрын

I like the aspect that it is not going to rust and cause spalling in the concrete.

@repalmore Ай бұрын

What I would love to see this product used in bridge decks. Can't tell you the number of times I've seen bridge decks being rehabilitated by removing the brocken an up heaved concrete, cleaning the rebar and pouring more concrete. To use this on current decks it would require more work but the future savings would be worth it.

@markmoreno7295 Ай бұрын

It totally makes sense. The only issue I see is that buildings are torn down for one reason or another. At job sites I see piles of materials for recycling. A pile of concrete chunks here and a pile of mangled rebar there. When it comes time for crunching concrete laden with fiber-reinforced polymer bars will there be any issues? Does it even need to be separated? Perhaps some buildings are torn down due to spauling. So maybe fewer demolitions will need to happen.

@g2buildingproducts Ай бұрын

When recycling concrete which has been reinforced with MST BAR there is no need to separate the MST BAR from the concrete. Everything can be ground together back to its original state of sand and stone.

@gclarke4720 Ай бұрын

any chance you do a video on basalt reinforced polymer? great video.

@sparksmcgee6641 Ай бұрын

Same stuff but it's more expensive and it's not a residential product so they won't do it here.

@capeguy Ай бұрын

Matt take a look at basalt rebar, it doesn't split like fiberglass bars.

@thunderofgr Ай бұрын

Yep. Came here to screech this. GFRP is a temporary, cheap solution. Basalt Rebar is woven volcanic fiber and will outlast all of us for generations.

@Ordos20 Ай бұрын

I first used this reinforcement in the Netherlands (then under the name ComBar) as a chief strucutral engineer of a precast concrete factory in concrete walls, where it supported the thinner faced concrete, thus acting as a thermal barrier (and no risk of corrosion). While some properties are better as opposed to regular steel rebar, the low adaptability on site (or even in a precast factory) is a major hindrance. That and the Eurocode has low adaptibility to replacing the steel for GFR. A lot of the formulas in the code have a basis in the fact that concrete structures warn the user before they fail (by cracking in a certain way for example) -- what does astructure say when the material stretches far more easily?

@rsnmaa Ай бұрын

Essentially the only requirement is that GFRP is less fragile than concrete -> the reinforcement needs to be able to stretch more than concrete. Of course too 'stretchy' reinforcement will grow crack sizes and effect sustainability.

@DIYEricAZ Ай бұрын

What if the framer nails it when hammer drilling for anchors, do you lose the effectiveness of the entire embedded stick, or is the damage localized? Can you tell when you've hit one like with steel rebar?

@alexdrockhound9497 Ай бұрын

Thats a really good question!

@alexdrockhound9497 Ай бұрын

And also, i wonder if it can be pre tensioned also for other kinds of projects like wide bridge spans.

@volentimeh Ай бұрын

Hammer drill would go right through this stuff without much if any warning, though I doubt the occassional hit would be an issue, the designed tolerances are not that finely tuned.

@Julian_Hopf Ай бұрын

You said it was not the same as fiberglass and justified that by describing it in a way that perfectly matches fiberglass.

@markbernier8434 Ай бұрын

Without getting too technical "fiberglass" to the general public is the sheet goods you can buy in a Bunnings or the like to fix your boat or car. In industry there are many many variations of GFRP for many purposes. One would need a full data sheet to really know exactly what is being spec'd here.

@raymondpeters9186 Ай бұрын

This would be a perfect product for pumicecrete walls and roof

@yabuts Ай бұрын

I've been using gfbar for at least a decade in swampcrete. it's so hard to find bar that isn't corroded in my area, this stuff rules in wet areas

@jonathanlanglois2742 Ай бұрын

I'm a bit surprised about the mention of concrete sprawling and rust on a sidewalk. In Canada, many sidewalks don't even have rebar in them. They just don't need it to do the job that they are expected to do, and mind you, we do run sidewalk plows on them during winter. A 10 centimeter thick slab with compacted stone under it is more than strong enough in most cases. We've got a fair bit of clay in our soil, and despite that, we generally don't have much of any problems with our sidewalks.

@G8tr1522 Ай бұрын

there's a lot of softer soil in the US, as well as not having mountains and stone quarries everywhere.

@executivesteps Ай бұрын

Sprawling? The word being discussed is spalling not sprawling.

@stevensyrko7109 Ай бұрын

if you are cutting the Fiberglass rebar you also must wear N95 dust masks because of the fibers flying around

@RCMServices Ай бұрын

In our area, the cost is basically identical. Some of the gfrp bars are for horizontal applications only.

@chaseweeks2708 Ай бұрын

The thing about recycling steel rebar is that it's likely going to be stuck in concrete for 50+ years. If you were ripping it up every decade, the recycling value would cut hard into the GFRB's reduced carbon advantage but if both are going to be in use for the better part of a century before either is going to ripped out then it's kind of a moot point. Besides, the advancements that have been made in the last decade toward successfully recycling fiberglass wind turbine blades are any indication, you should have no issues recycling the glass rebar when it comes time to do so.

@JeremeyHowlett Ай бұрын

I would love to see this rebar under a load test. Any videos out there?

@shaneboor Ай бұрын

Tyler Ley's Channel may have something

@MrRebar15 Ай бұрын

*Matt Risinger* That would have saved my back, back in the day, lolooo. Thank-you gentlemen for taking the time to bring us along. GOD Bless.

@maslowpavlov Ай бұрын

basalt rebar seems more interesting as an alternative, steel rebar most important quality in the market place is its ability to be made from recycled steel and be recycled again in the future

@MultiYlin Ай бұрын

I will not trust fiber rebar for a simple reason: the fail mode is always going to be a catastrophic failure (engineeirng terms used quite a bit in mechanical/material science engineering for a sudden and unobservable failure) in fiber rebar. Fraying can be an issue, fatigue related surface-bonding between fiber and resin can be an issue. However, I will trust fiber in concrete since their thermal expansion constant is almost identical which will increase quite a bit of surface strength and gives concrete more self-healing cabilities. I will use ASTM2205 duplex or some other grade duplex stainless steel as rebar: they are much easier to handle in some salty/marine environment (Duplex behaves well under load and Chloride environment .... to be honest, Duplex behaves well in many environments and it has been used quite a bit in offshore drudger/oiler). They have proved their worth in the UAE and Shenzhen which are both hot and humid (especially the latter is humid as hell and the one using it is the largest insurance company in China). Stainless steel can be prone to catastrophic failure, but Duplex behaves much more like their ferric cousins

@ancientSumerian Ай бұрын

would like to see that actually

@jon4715 Ай бұрын

@@MultiYlinA la that carbon fiber submarine…

@MultiYlin Ай бұрын

@@jon4715 I dont get why people still think X-FRP is some magic spell for everything ... I can see the use in cars or aeroplanes (even aeroplanes are used in great cautions which added quite a bit of ground crew works to ensure the CFRP ... I bet A350 is a much better planes after 10 years of service ... the CFRP head is rather stupid)... and I dont think buildings should have a planned obsolete like cars or planes.

@feonix138 Ай бұрын

How does it hold up in fire (heat stress) compared to steel?

@chrispatterson229 Ай бұрын

Off the charts when it comes to pull-out strength.

@CMCraftsman Ай бұрын

Me too

@evahsia Ай бұрын

One difference is that the steel rebar can be used as an effective grounding system is some cases, where the fiberglass rebar can't be.

@ImTheDudeMan471 Ай бұрын

In school we were told that in an over stressed system, you need the steel to stretch first at the bottom (lower factor of safety) before the top concrete (higher factor of safety) catastrophically instantaneously fails. How does the fiberglass accomplish this?

@ulbuilder Ай бұрын

It doesn't. The fiberglass will not stretch. It will catastrophically fail once stressed beyond its limits.

@markhottman2652 Ай бұрын

6:12 “ Sidewalk “ spalling & de laminations. DURABLE, reinforced concrete 👍

@vica153 Ай бұрын

"Not sponsored, but they did give me a discount" LOL I love your videos, but that is silly.

@roberthigbee3260 Ай бұрын

Stronger, yes, but 3X less stiff than steel. MST web site lists the modulus of elasticity of their GFRP at around 9,000 ksi (9,000,000 psi). steel is 30,000,000 psi. This means the MST GFR will stretch 3X more than steel under a particular load. The modulus of elasticity of 3,000 psi concrete @ 100 lb per cubic foot is around 2,000,000 psi. Whatever you reinforce concrete with has to be stiffer than the concrete - both GFRP and steel are stiffer, but for a particular amount of deflection, the steel rebar will hold more of the load than GFRP. The fact that GFRP is super strong in tension doesn't mean anything if you have to stretch the crap out of it to get to that stress. The concrete will break long before the GFRP breaks.

@TheRayDog Ай бұрын

Good points. Stainless rebar imo is the ticket.

@bornahany Ай бұрын

That’s true! Only if serviceability is the governing design. Keep in mind gfrp only strain goes to 2% so at some point gfrp can carry more load and stretch less. The reality is in largest suspended slab to achieve the same deflection you can use 15-20% more rebar and achieve the same deflection. However, when you are using this material on slab on grade with deflection is not a problem then you can take advantage of 160KSI tensile and use less rebar… Cheers

@roberthigbee3260 Ай бұрын

@@bornahany Thanks for the info! I don't understand your "GRFP only goes to 2%" comment. 2% is part of the definition of how to compute a materials yield stress. First you measure the length of the test coupon before you apply a test load, then apply and remove the test load. If the change in length divided by the original length (the strain) is 2%, then the load you applied is defined as the yield load (divide by cross-section area to get the yield stress). I know this definition applies to metals, but I don't know if they have a different standard for GFRP. However, it doesn't make sense to me that GFRP would stretch 2% and then stop stretching. Regarding your "15-20% more rebar to achieve the same deflection" comment - am I correct in assuming you were referring to using 15 to 20% more GFRP rebar to achieve the same deflection? This also doesn't make sense since you have to reduce the load by 3X to get the deflection to equal that of steel because when designing concrete beams, they want you to assume the bottom half of the beam is cracked and that the load at the cracked zone is carried only by the rebar. Is there a different way to compute slab stress (I don't know, I'm sincerely asking), like maybe they allow you to assume the concrete does not crack up to the neutral bending stress axis?

@jaymacpherson8167 19 күн бұрын

Worker safety: Particle release on demolition, so wet the material to minimize particles becoming airborne. Though once materials dry, if exposed to air, particles can become airborne. Will this bar require a higher density bar array due to lower shear strength? No more rust removal before the pour? I like that.

@mikemore732 Ай бұрын

As worker safety was mentioned, you definitely want to wear a mask or respirator when cutting

@jeffschroeder4805 Ай бұрын

The weight becomes more of a factor when glass reinforced rebar is used where it is not supported directly by the ground as it is in this application. The reduced weight in concrete placed in a floor above grade for instance reduces the gross weight of the concrete pour so forms and false-work can be designed for lower loads and additional floors each transfer reduced weight to support pillars and beams. Here in Minnesota, rusting rebar is a very significant problem because of the extensive use of road salt used for de-icing in the winter. A bridge near my home is being replaced this summer (spalling has been visible, ineffectually patched over and over for years), I will have to stop and see if they are using corrosion resistant rebar for the bridge deck this time.

@sosep.hatfield Ай бұрын

not any time soon, but it will be interesting to see how advances in material sciences continue to transform industry.

@ThePeachtree69 Ай бұрын

Curious as to mingling GFRP and steel. Lots of comments about the sheer strength questions on GFRP but also curious about job site changes when concrete delivery is imminent.

@g2buildingproducts Ай бұрын

Mingling MST BAR with steel rebar is acceptable.

@williamdixon8283 Ай бұрын

We only use rebar when joining old to new, plus an expansion joint to prevent the inherent damage from new joined to old. Maybe glass highway mesh? How do you make hoops for ladders and sono tubes? Are the laps the same as with metal? Are they tied with wire ties vs. welded?

@kkarllwt Ай бұрын

All shapes are made in the factory when the polymer is ' plastic '.

@g2buildingproducts Ай бұрын

Any shapes (hoops, stirrups, bends) are formed during the manufacturing process. MST BAR is manufactured to spec using custom jigs for forming. Because they are formed in a jig, each piece is identical. There is no variation in the shape or angle of the bend. We also avoid any breakage during production that may be experienced using steel. Laps are the same as with steel rebar. MST BAR can be tied with wire ties or zip ties but cannot be welded.

@rogerbartley2225 Ай бұрын

I work with GRP a lot and whilst there are many advantages I'd be a little worried about using it for rebar in a big project but household size stuff it would be pretty handy. The thing with GRP Vs Steel is, steel is quite forgiving, it will stretch and give before loosing integrity. When GRP fails it fails, will tear straight through.

@FranciscoTChavez Ай бұрын

I can see this being less expensive on a large job just because it's easier on the workers (easier to move around the site, less tired, less mistakes). But, the part I'm wondering about is temperature related expansion and shrinkage. I don't know if it's true, but I've heard that steel rebar expands and shrinks by the same amount as concrete, reducing damage to both materials due to changes in temperature causing them to expand and shrink by different amounts. For me, this makes me wonder how well this holds up in areas where the temperature can be 0 degrees F in the Winter and 115 degrees F in the Summer?

@jafinch78 Ай бұрын

I've wondered for a decade now or more, really going back to thinking about wrapping structures potentially for longer lasting results with carbon fiber. Interesting to see more readily available fiberglass at the big box stores. Happy for that. Bummer in regards to the open source or other Ultra High Performance Concrete now. That seems like would be more common if more combustion coal or other like waste plastics or rubber fired power plant stations. That and in general the lack of implementation for longer structural integrity.

@jafinch78 Ай бұрын

Thanks for sharing!

@charlesviner1565 Ай бұрын

On the BUILD SHOW

@Troy_Built Ай бұрын

I'm curious about breathing the fibers. When we do fiberglass insulation we have the same cactus in the hands feeling if not wearing gloves. We also make sure we are wearing masks.

@markusgorelli5278 Ай бұрын

I hope this isn't going to be an asbestos-like problem in later years when people have to do demolition.

@g2buildingproducts Ай бұрын

MST BAR does not release fibers. It has a different molecular structure than fiberglass insulation. Cutting MST BAR produces round dust particles similar to cutting stone or wood. Although there is no specific health risk in cutting MST BAR, personal protective equipment (PPE) should always be worn.

@aaronbounds1336 Ай бұрын

Isn’t rust an ever-present property of steel rebar, due to the moisture intrinsic to concrete?

@tomkelly8827 Ай бұрын

It needs water and air to really rust. So if it is covered properly, it isnt rusting

@willtrapp6188 Ай бұрын

What about using both steel and fiberglass? Steel for the corner bends, and fiberglass for the straight runs?

@mattgirgenti3595 Ай бұрын

I am planning to use this on my ICF workshop build. I am bit concerned, as you mentioned, the sheer strength is getting mixed reviews. Still researching a bit but really hoping it can work for our needs.

@MadLadsAnonymous Ай бұрын

Look into basalt (BFRP) rebar, Kelcrete admix (eg super plasticizers), Helix micro-rebar fibers. We are considering an ICCF build with Perfect Block soon!

@grinchyface Ай бұрын

Where is the shear load in an ICF frame???

@MadLadsAnonymous Ай бұрын

@@grinchyface ICF can have vertical and horizontal rebar laid within the blocks before pouring concrete.

@boedilllard5952 Ай бұрын

I'd say about 65% of the stuff shown on this channel makes me think I should consider that - this was a big swing and a miss as a consumer - it might be interesting for a builder though.

@disqusrubbish5467 Ай бұрын

AI says: "the total energy consumption of fiberglass rebar production can be estimated to be around 10-15 kWh per kilogram of rebar, depending on the specific manufacturing process and equipment used. For comparison, the energy consumption of steel rebar production is typically around 20-30 kWh per kilogram." So the initial production may use less electrical energy, but if you factor in you can't recycle it, closer to a wash perhaps. It also takes petroleum to make resins... Anyway, weighs less, and doesn't rust are positives.

@user-vq6rx5jo8c Ай бұрын

Cost is important if you can't use it on every job it's not worth it . Working with fiberglass, you need ppe gloves , masks, respirators, cutting shields , and long sleeves .

@Oldguard_8 Ай бұрын

Cost diff? Great content thank you as ever!

@g2buildingproducts Ай бұрын

Generally speaking, the cost of MST BAR is very comparable to steel rebar. The price of steel rebar is known to fluctuate significantly and is quite different dependant on geography, whereas the price of MST BAR holds quite consistently. Many builders report savings on both materials along with high labor cost savings when using MST BAR.

@joshuaolson5265 12 күн бұрын

Don't forget the plastic rebar chairs! Fiberglass will flex back to straight instead of bend when the concrete crew walks or drives on the rebar. The rebar chairs guarantee the rebar is at the right height too. Steel rebar will sink down to the bottom of the slab even if they randomly pull it up in the middle.

@jokerace8227 28 күн бұрын

Between not rusting, and probably being closer to the thermal expansion rate of average concrete mixes, it should be superior all around.

@user-tv5dt3nm9y Ай бұрын

My local big box store carriers both bars. For a given steel bar size, GFRP is specd smaller in diameter.

@ducoh2093 Ай бұрын

Does it expand thermally in the same ratio compared to steel rebar? one of the nice things about concrete plus steel rebar is that they kinda shrink and expand in the same ratio under thermal loads

@g2buildingproducts Ай бұрын

MST BAR has almost the same expansion as concrete in longitudinal direction. Moreover, MST BAR maintains its very high bond strength to concrete through temperature fluctuations. Simply put, MST BAR performs very well under these conditions. This is one reason why many municipalities are regularly specifying MST BAR for infrastructure, highway and bridge projects.

@prowlersurfboards9128 Ай бұрын

Did Matt mention anything about the Fiberglass rebar's compression strength? We know it performs well in other areas besides shear. Curious to hear if the compression strength of the fiberglass has a similar or even better testing result as the steel. Its stiffness properties when used in a vertical manner would make me a little concerned.

@ILikeFreedomYo Ай бұрын

I can't wait for a product that has sheer strength. Its a good idea to have rustproof reenforcement. I see tons of failures in masonry. A lot from rebar and a ton from dura wall.

@psidvicious Ай бұрын

I think the industry is moving away from the epoxy coated rebar now because they found that when the epoxy gets nicked (like it inevitably does), water gets under the epoxy and then is effectively trapped inside and the deterioration begins. I’ve used a fair amount of galvanized rebar on jobs exposed to harsh environmental conditions. I haven’t been around long enough to know if it surpasses the standard 100 year expected lifespan of standard rebar 🤷‍♂

@kurtdobson Ай бұрын

The magic of rebar and concrete is they both have exactly the same coefficient of expansion…

@Darfur64 Ай бұрын

On the recycling aspect, I have a local concrete recycler that charges extra for concrete with rebar, I wonder if this fiberglass rebar would feed through the machine in comparison to steel.

@g2buildingproducts Ай бұрын

@ubacow7109 15 күн бұрын

The final recycled product would prob benefit from the polymer and glass tbh. It's like glass fiber reinforced concrete along with polymer modified concrete

@dewholdingsllc1050 Ай бұрын

😂 leave it to the experts engineers to decide to use a heavier grade bar than the maker recommends. Reminds me of the early adopter of fiberglass boat manufacturers who used real thick laminated fiberglass to build the hull and then someone else figured out that fiberglass was so strong that a thick layer was not needed.

@bundles1978 Ай бұрын

Modern concrete admixtures are so good, that it basically makes the steel last long enough to make it more attractive th fiberglass. Fiberglass has been added to concrete for years as fiberstrand, or toughstrand. the biggest problem after this is, you cant bend fiberglass bar, so i assume you have to special order any pieces that arent straight. since its creation decades ago, numerous other reinforcement methods have been put on the market. instead of tough strand you can get a stainless steel strand additive. lastly, concrete was perfected in the 50s and 60s, i can show you concrete structures that were built in the salt water in the 50s, that are still fine today. not a rust stain in sight, and zero spalling. Its just that a lot of people do not know how to do concrete properly near saltwater

@Phil-D83 Ай бұрын

The stuff made from remelted lava works well, but it is hard to find.

@clivewilliams3661 Ай бұрын

There are obvious pluses and minus' for both products but I don't think that GRP rebar is a wonder material, its just another option. You only have to look at the way fibre reinforced concrete has not taken over the market as was originally expected. I see two downsides for GRP rebar: 1) The fact that it cannot be bent on site or at the suppliers, any bent rebar has to be specially moulded, which is OK for major works or those of a very simple nature but you can bet that it causes a real headache for the sites as a special order has to be placed just for the one length that you are short and you can also guess that delivery may be extended. This compares with on site bending of a piece of steel rebar that you probably bought from the merchants an hour ago. 2) In UK we use a considerable amount of weld mesh reinforcement, particularly for floor slabs and clearly that option is not available in GRP.

@MaverickandStuff Ай бұрын

I remember seeing adds for these in the 90s.

@donnybrasco6321 Ай бұрын

Any data available for use in ICF construction?

@D2O2 Ай бұрын

Why would the data be different for ICF versus any other application? The mechanical properties are independent of application.

@sethborman7844 Ай бұрын

@@D2O2 because GRFP can be smaller in diameter, which MAY allow you to use a 6" ICF block instead of an 8", which is normally not a good idea because it's hard to fit your hands in to tie the bar.

@user-qn8sg8uw1e Ай бұрын

I’m in SE WY and last year, it was not approved in foundation walls or ICF walls. Not sure why but as the engineer mentioned, it does not have good sheer strength and not recommended for connecting sidewalk/driveway to house. Hood that helps

@donnybrasco6321 Ай бұрын

@@user-qn8sg8uw1e the mention of shear strength is what had me wondering - thanks!

@LoveGrowsAdam Ай бұрын

What I want to know is if it would be best practice to use both fiber and rebar together. I would think so but I don't know. By fiber I mean glass fibers, not the bar

@mrjoe2227 Ай бұрын

I would love to see you bend fiberglass rebar. End of story, just keep using regular rebar.🎉

@cliff7634 Ай бұрын

There is a big difference in GFRP vs. BFRP and allot more advantages to that of steel. Steel has it's place to have to be used in certain construction projects but BFRP would save allot of head aches over steel re-enforcements. BFRP is totally recyclable and can be used in concrete and asphalt and in fire and acid areas and will hold up longer than steel. A bridge in Miami was built over 30 years ago for very heavy traffic. A core sample was taken after the 30 years and was just a strong as it was when cured 30 years ago with zero Spalding or signs of wear as other bridges in the area. Steel has it's place and will never be totally replaced but BFRP over GFRP all day twice on Sunday's. If you need BFRP (Basalt fiber resin polimer) I can supply it for sure.

@JohnLee-db9zt Ай бұрын

You have a link to BFRP?

@MadLadsAnonymous Ай бұрын

BFRP doesn't bend like steel, right? And where do you get it in the States?

@ronblack7870 Ай бұрын

you might tell us what is bfrp boron fiber , brass fiber , basalt fiber ? what

@MadLadsAnonymous Ай бұрын

@@ronblack7870 basalt fiber reinforced polymer

@rockys7726 Ай бұрын

how does this compare to Helix microrebar?

@josephg.3370 Ай бұрын

Good question

@g2buildingproducts Ай бұрын

MST BAR would be more comparable to steel rebar for use and installation. MST BAR could and has been used alongside a product like this if required.

@rockys7726 Ай бұрын

@@g2buildingproducts But it's still a big bar versus micro rebar which is tiny little fragments that form a binder on a micro level.

@g2buildingproducts Ай бұрын

@@rockys7726 Very true. This is why, any product used must be engineered for proper application in any given use case.

@thomaskelly2881 Ай бұрын

what about the difference in thermal expansion. steel and concretes mostly match

@g2buildingproducts Ай бұрын

@jvin248 Ай бұрын

Matt, I hoped you might show how they bent the fiberglass rebar into the loops on that beam section. Torch to soften the polymer?

@geoffstrickler Ай бұрын

They said they ordered it fabbed that way, no on-site forming.

@drunkenmessiah Ай бұрын

Noooo way, you can never do something like that with GFRP. That's probably be biggest downside of this new type of composite rebar. You have zero options for fabrication in the field. All bends must be pre-made at the factory and delivered to the jobsite. That said I think it is worth the trouble. Built an ICF foundation with it last year, used it in the slabs as well. EASILY a 500-year foundation given the waterproofing we did, probably closer to 1000. The house sitting on top of it could be rebuilt a half-dozen times over the coming centuries no sweat.

@billdavis606 25 күн бұрын

Concrete will spall all day long without any rebar in it, so it's not accurate to automatically attribute spalling to the steel rebar. People act like shear strength isn't a factor in walls for instance, I like some benefits of fiberglass, but I personally feel better about a steel grid resisting lateral movement in a wall.

@baophan3515 Ай бұрын

What about the difference between adding fiberglass fiber to your concrete mix vs fiberglass rebar?

@g2buildingproducts Ай бұрын

MST BAR is comparable to steel rebar for installation procedures. This product is a different category with different installation procedures and requirements. Our understanding is, some form of reinforcing bar would be required to go along with the fiberglass fibers.

@sandervesik173 Ай бұрын

As you don't mention it, I guess thermal expansion and conductivity are not of concern in Texas? Otherwise, fiberglass rebar having a thermal coefficient that is much close to that of concrete and being less thermally conductive are advantages in rest of the world.

@g2buildingproducts Ай бұрын

@Weaseltube Ай бұрын

I didn't hear the question about whether the steel and CFRP could be combined into the same form. Say, CFRP where you need the tensile strength, tied to steel where you need to custom bend something on site?

@MadLadsAnonymous Ай бұрын

This is the big question! An engineer told me the tensile strength is a nonsense metric when you typically way flexing capacity that steel has but GFRP doesn't.

@g2buildingproducts Ай бұрын

Yes, using both MST BAR and steel rebar in the same wall is acceptable. MST BAR is not CFRP, it is GFRP. CFRP’s come at a much higher price.

@MadLadsAnonymous Ай бұрын

@@g2buildingproducts Any advantage to GFRP over CFRP other than price? I assume CFRP-carbon fiber, right?-has much higher flexural strength than GFRP.

@g2buildingproducts Ай бұрын

@@MadLadsAnonymous Yes, CFRP is Carbon Fiber Reinforced Polymer. GFRP is Glass Fiber Reinforced Polymer. Assumptions are never safe. The only way to know flexural strength comparisons is to look at the testing and related results.

@MadLadsAnonymous Ай бұрын

@@g2buildingproducts I will look into CFRP for a future build. Thanks for bringing it to my attention.

@scottfranco1962 Ай бұрын

Looks like we will still get impalement injuries. Seriously, the no bend thing is a killer. I would think at least it would end up used in combination.

@tomkelly8827 Ай бұрын

I was thinking about buying some but where I live the cost was more than double that of steel. The fact that it didn't bend made me concerned about the strength at the corners too so I went with heavy trusty steel. I do look forward to seeing cheaper fiberglass rebar in the future though. One place that that weight must add up is in high rises though. Are high rise buildings using this more to reduce their weight as they go up and just using steel where bends are needed?

@Kosmonooit Ай бұрын

My part of the world concrete structures get smashed to loot the rebar, so this solution is a plus!

@mangarang Ай бұрын

If this becomes the industry standard where does the glass come from? I’ve heard that sand supplies for concrete are dwindling. Is that true? If so, what about the sand used for glass?

@g2buildingproducts Ай бұрын

We are of the belief that there is plenty of sand available on the earth to support our industry requirements indefinitely.

@caldodge Ай бұрын

I don't care about decarbonization. My concerns would be durability and lifecycle cost. It sounds like i would still choose fiberglass rebar.

@t4bs594 Ай бұрын

Thanks for the video. Just to let you know that it is "Its Replacement" not "It's Replacement".

@ronsilva516 Ай бұрын

That’s interesting

@mikeydeighan Ай бұрын

As always great show. Have been wondering about the glass bar. I was thinking more generations and rust Oonnnnn the .lol... 😂😅😂😅🎉🎉

@momouppa Ай бұрын

They call me steel rebar because my pullout strength is weak

@MyLoganTreks Ай бұрын

The greatest benefit I see over steel is the issues with steel Spalding around homes exposed to saltwater... Huge benefits how do you cut it?

@AlMai222 Ай бұрын

I can confirm fiber glass or pink bar is better. Anytime I’m breaking concrete with steel rebar, the concrete just sheds off. In fact a weak point during the demolition process

@msmeyersmd8 Ай бұрын

I believe even cured concrete is always considered electrically conductive because the water content never goes to zero? I thought the epoxy coated rebar was very bad? Because any break in the coating would allow moisture to spread by capillary action and cause unseen oxidation of the steel? Since any steel rebar is exposed to this concrete moisture content for the life of the structure. Isn't the formation of expanding rust (iron oxide) inevitable for most structures with steel rebar reinforcement? Obviously salt water exposure probably accelerates this process. Especially after spalling or cracking is observed. Most of the beautiful historic bridges over the rivers on the coastal Oregon highway have had accelerated damage from this problem. I believe there are extensive and expensive remediation and monitoring programs addressing this issue ongoing. Conducted by my Alma Mater, Oregon State University. Go Beavers. I've lived in NW Texas for 30+ years. We don't see high humidity here at all. But cement here still has a finite life. I saw a short video about how Roman concrete still stands in Europe. Because of better design of, even very large, masonry structures. I don't remember any details about how the concrete/mortar was different. However, it sure has stood the test of time.

@JohnboyCollins Ай бұрын

Seems like a big deal. All concrete eventually cracks and exposes the rebar to eventual rust (if not actively maintained). Wonder if this could extend the lifespan of reinforced concrete beyond a couple hundred years or so, though I worry about the longevity of those polymer bonds.

@g2buildingproducts Ай бұрын

Yes, MST BAR, fiberglass rebar holds the advantage that corrosion does not affect the reinforcement when exposed to cracking or moisture. For this reason many salt water areas, break walls, bridges and other standard applications enjoy lower maintenance and longer lifespan on the concrete MST BAR is reinforcing. MST BAR will outlast the concrete!

@AA-pf9dh Ай бұрын

Basalt is the one that you need to check out!

@MadLadsAnonymous Ай бұрын

Not widely available in the States, I believe.

@AA-pf9dh Ай бұрын

@@MadLadsAnonymous Take a look at Gatorbar. They’re based in Michigan. I believe they have representatives all across the United States.

@MadLadsAnonymous Ай бұрын

@@AA-pf9dh Appreciate the reply! Will do.

@Isaacmantx Ай бұрын

Basalt fiber!!!

@jimim8514 Ай бұрын

What about the fibres upon cutting, are those fibres as abrasive & damaging as Asbestos?

@g2buildingproducts Ай бұрын

MST BAR does have the carcinogenic characteristics that Asbestos has. Cutting MST BAR produces round dust particles similar to cutting stone or wood. Although there is no specific health risk in cutting MST BAR, personal protective equipment (PPE) should always be worn.