Thanks for creating this channel and educating me.

Thank you, excellent info and well presented.

Great info Just poured a root cellar domed roof and the forms underneath will stay in place for 30 days but the top is open to the air. Tarped for 4 days.

Love your content! What are your thoughts on a good mix design for residential construction with ICF's? Thanks!

Excellent video. Only thing I would've like to see is after completely curing, the strength difference between the different methods. Thinking using a hydraulic press, monitor the psi applied, then attempt to see what the crush pressure is and if it meets the 4,000 # or whatever you're using listed rating.

Thanks for the information. It helps me a lot.

thanks dr tyler for those valuable infos !!

A doc, I have a suggestion for you and testing ... using this testing method... and ''service life''... Please, consider grabbing some concrete curb that is being replaced by your municipality... (use that because, it will have a ''spec'' that was used that you can use values from - confirmable by the concrete load ticket)... Then you can take the ''cut and removed section'' (NOT jack hammered as that would or could damage or corrupt the test sample)... With all that said, we have a three sided exposed sample (the concrete above the street level AND you have concrete that was ''left in the form'' (well, they backfilled very quickly and created your three sided form below the surface... hopefully, you can find a sample curb that is 15 plus years old and do your testing on... This would give you a more accurate ''365 life'')? Hopefully, you can find a sample that was installed in ideal concrete installation time period / weather... which would be overcast day, 70 degrees, backfilled immediately and forms that were left on for three days, etc... my thoughts... Thanks Tyler for your content... take care.

This channel is excellent! I'm curious about the affect of the fine skin of concrete being pulled off during demolding. I'd like to run the same test but use silicone for the rubber due to its amazing release properties and virtually no remaining concrete skin left in the mold. My question is, would keeping the skin intact help with moisture retention? Also, what affect does vibration cause during demolding/handling at 12 and 72 hours? I would guess that the fresher concrete will be more affected by vibrations/stress from demolding. Thank you for the chance to geek out!

Great tutorial... Thanks

Very educational! Thanks!

Need advise sir my newly slab only as of now 24 days still with forms showing on top of the slab rust is this a big problem, thank you

Anyone know how many samples of each method were tested? The type of concrete mix? Environment tested in (indoors, outdoors, temp?)

love your vids. Subscribed! Now if we can just make every person pouring concrete watch these, we'd have a much better and safer world out there! There's a new highrise job, they are still using coated for the patio deck/porch piece, and uncoated for the vertical poured pillars.

Thanks Tyler for the videos. It's a great refresher for me since it's been so long since I took my concrete class in college. It may be dumb question, does it mean you can remove the formwork after the concrete reaches its "final set" (thought technically we do not know exactly is the final set)

Hi Tyler. I have a question for vertical concrete (i.e. walls). Normally when wet curing with burlap with formwork on, the water is retained on the flat surface on top, does this mean that the side of the walls doesnt cure as much as the top due to less contact with water. Is that assumption correct? Or will the water from the top of the surface somehow provide enough moisture for the top and the side of the wall? The way I see it, only the top of the surface is sufficiently cured, while the side of the wall only get minimal water contact from water that flow down from the top through the small opening between the formwork and the wall.

I am considering building a shed with aircrete using 24in. slip forms as I did with a previous shed made with on site mixed concrete. After watching this and previous videos I am thinking of puting wet blanckets under plastic sheeting on the aircrete after I remove the forms but how to do it when I move the forms up for the next pour. Do you have any suggestions.

I built wood forms for a foundation wall and covered them with 4 mil pvc. I did not remove the forms for about 2 weeks. I guess that was good.

when can you take forms off of concrete curbing to do the Finish trowel work

What about the new styles of foundations for basements and homes using the ICF blocks. Are those potentially better for the structure of the concrete?

what if you let it stay for a week or more ? and wet down the wood molds too would you get a better stats :) .

very informative, thank you.

Hey Tyler great job. I would like more information on your concrete mix design. Please share more videos.

Awesome channel Thank you

I have see people use rolls of sponge half to 3/4 in thick instead of burlap. They would soak them 2 to 3 times a day and this in temperatures in the 40's C. How will would you think that works.

@Tyler Ley, what if you kept a constant mist of water on the surface instead of just relying on the burlap?

I like concrete but still confused the relationship between a dry mix being stronger and keeping it wet during curing. Do we only want to retain it's moisture content tent or do we want to add water during cure? If you could submerge curing concrete in water for a few days will that be better? What's the relationship here? I do some ferrocement formless work and we always spray it with a water hose as often as we can for several days to help it cure, sometimes we use tarps but mostly just the water hose.

Nice!!! ( I never knew about curing!!!)

Did your burlap have a soaker hose while wraped in plastic. After a compressive cylinder shows to have a 15 mpa strength, usually after 2 days, we are able to remove our forms if we use burlap, saoker hose and white plastic for up to a minimum of 96 hours since the concrete pour. Ministry Of Transportation of Ontario, O.P.S.S. Standard

6 days after i removed my concrete columns forms, what can u say about it? is it bad because its been days not hours? or it is more durable, please answer thanks

Great videos!

if i am building a house myself and i own the forms with no hurry in removing them, then what would be the best time to remove them?

how often does vertical concrete come in contact with chlorides? I guess I'm more curious about parking structures and not bridges. specific to parking structures I can see at the base or if drains are near columns but would like to know your thoughts on exposure conditions. maybe even weakness of horizontal construction joints between elevated decks and next lift of vertical and the how this exposes the design to elements

How about soaking concrete in water? Also temperature?

So with a wood form left on for 72 hours on a vertical wall...should I cover the open top with plastic as well?

Liked and subscribed, good stuff!

What if you were able to build out material for forming that you could leave in place for grade beams? This video would suggest maximum strength.

Great content; thanks; though I suggest considering another factor that would impare concrete quality due to preterm form removal which is caused by the force inflected on structure while removing the shuttering; many times you could notice chopped off corners of concrete columns because of fast removal of framework; that raises concerns about existance of hairy cracks within concrete elements; isn't right?

Great information. Can you share your knowledge on when residential framing can be installed on new concrete? Thank you.

What if the forms had an impermeable liner that stays behind for a while when you take them off? Or more extreme, since it's a vertical wall just leave the liner in place as part of the structure.

What if the fiorms are left on for 2 weeks? My contractor left them on and went on vacation.. can they permanently stay on?

What about the weight of the concrete, loading itself without support, before it has developed enough strength?

this is probably not going to get answered when I need it (now), I have csa rapid set in a pvc 1 inch I want to remove and submerge in water. It’s been an hour and a half; I don’t recall if you mentioned rapidset in this video. Your videos are awesome though!

Wouldn’t this also depend on the exposed surface area? For instance if you’re pouring a large slab for a foundation, the ratio of the forms’ surface area compared to the surface area of the exposed top horizontal slab is very small.

We are building a new home, and builder began pouring around 8am and by 5p same day, took off form boards. Is that concerning?

Why did wood forms lose less mass than steel or rubber forms? I am curious since I would normally except wood to absorb moisture.

I plan on building every thing out of concrete for the structure of my home and out buildings. Is there any real gain to leaving the forms on for more than 72hr say 6days or more?

Is concrete that is left submerged underwater considered the best form of curing?

Thank you for all the info and details. I'm getting free education from you. Thanks again!

k, I have asked a builder and he said the forms are really hard to get off if left on for 48 hours even.

Do You have a video explaining why mass change is a measure of strength or quality?

Sir, In fick's law equation, Should we consider the initial chloride content in the concrete???

If you’d ever do this experiment again, can you do a 3 day, 7 day and even maybe a 28 day? I think that would be interesting. Thanks for making these videos!

Good job!

So, ICF forms sound like a great idea, you never actually take them down. And, 3-7 days of wet curing the tops would be ideal.

What is MICA in concrete production? What are its Affects?

Hey, question. How applicable is this type of thing for Insulated Concrete Forms?

Hmmm, so pour one day and strip the next morning is not great eh. Well I guess I will have to start delaying all my jobs by one 24 hour period after placement.

On a production schedule putting up a 70 story poured in place concrete highrise this dudes the first to go....

Do that mean the concrete strength at final setting is still less than the design strength of concrete?

If submerging the concrete in water is an option, would it be better to remove the mold as soon as the concrete is able to be moved without damaging or leaving it in the mold a bit longer? Submerging the concrete seems like it will produce the best curing, but I'm not sure.

Have you ever stripped forms that been on for 3 days?

They just pour 3 days ago here in NJ 40degrees steel form they removed the forms today 3 days I don't know man. It going 6 story building

Ideally would love to leave forms, specially vertical forms min 72 hours but scheduling and project costs always determine our push. We tend to us curing compound on all of our concrete, @ slab, columns and beams, coupled with the admixture of HRWR -- which we have noticed it helps tremendously achieve faster reach to our psi goals.... any other ways we could expedite without sacrificing quality?

Thanks, very informative, I’ll leave them on for 72 hours💪🤣❤️

i just knocked the forms off a slab i poured yesterday and i dont want to watch this video.

What is Pam>?

If it's your pet project, pour on Friday, strip on Monday.

But I always thought that wood let's the slurry leak and sucks the water of concrete.

How the hell does rubber and steel entrap moisture less than wood? That feels very paradox.

Great

A higher camera angle would be more flattering

For some reason my forms stay on at least 5 days... Because everyone hates stripping... 😅😅😅😅

I’m not sure about all this , people have been slop forming walls for a while now.

“You can increase your service life by 33 %” Ackshually 🤓 it is ~50 %, because the base is the reduced life, so 100 % (leaving forms enough time) / 66 % (removing forms early).

I love your informative videos. You're one of the few channels I subscribe to. But what's up with the weird faces you make in your video thumbnails? Some of them kind of freak me out. Keep up the good work.

Shit we've poured 4 ft walls before and stripped em that day

I keep the forms of the slabs 28 days, 😁😁😁

Yeeeeee...Hawaiian Cement!

I'm a big fan of concrete too, so plastic!

Daddy Pig would be proud (Reference Peppa Pig if you dont know why!)

Any lady’s on here???

waste of time resources, move on to adding silica to increase flex ablity, non functional removal of forms lol, gain in strength over time, non lost over time regained , amen

who do you think your target audience is, 8 year olds?

so freaking lame. no mention of mix . avrg consumer ?no idea how contractor has mixed concrete when truck shows up for doing the driveway