The crack should be considered an expansion joint. Grind it out, clean it, backer rod then a flexible filler made for expansion joints. The slab will always move…

I have all the tool brands. That ryobi grinder I obtained reconditioned for 20 dollars as a backup 4 years later still works. I left it in the bed of my truck several times(rain and snow) and still works whenever I need it.

Good 👍, but why not just pump the 2 part epoxy tube of goo into crack. It worked well for me

They make a rubberized epoxy that you can cut with a sharp floor scraper to avoid all that concrete grinding.

Wear a respirator when handling silica sand, real bad for your health the particles you don't see in the air are the worst.

You need to fix the problem that caused the crack....and it looks serious, once that is done....then you can look at sealing the cracks.

V blades are the way to grind cracks like that

yeah i get the sealer, accoustic type into the crack similar to the stuff they inject into the roadway cracks because it remains plyable, doesnt every dry completely, then patch over it. no matter what you do, the crack will always come back to hairline because the pad is moving, stablalize the pad is expensive this isnt the cistine chapel, best just to patch with grout non shrink slow setting ,to keep the hairline to a minimum. fast setting shrinks unless you get the special proprietary mixtures. regardless, slab is not stabalized. nice work, i guess. but this would have cost me 5 bucks worth of grout and some good masonry adhesive.

Everyone commenting on this being a patch job and it cracking again but nobody knows the situation without actually assessing it. If the crack was there as movement for a reason and that movement has stopped, doing this is perfectly fine. Hard filling or soft backer rod filling are two completely different solutions entirely dependent on what caused the crack in the first place. There isn’t a straight answer until you know the full story.

What good is that it's still going expand and contract

I couldn't fit a 12' aluminum straight edge in my service van but this 4' level will accommodate.

That’s an expansion crack due to no joints cut in it. Has nothing to do with base is NOT a structural issue, two separate slabs now that expand…this “fix” will not last…Period.

So you put on a mask on the glue but not the silica lol

Exelente trabajo ... Un poco de vibrado para que la arena sílica penetre ...

Lay an epoxy / fiberglass cloth over for strength….. helps!!!

Now I would like to know how did he feel the crack underneath the two-by-four

That adds strength to the foundation

You need to do what WiFi Systems says. For example; extended dry periods will cause concrete slabs to crack. Large enough for you to fall into them.

It’s a slab on grade, it’s not structural, purely for looks

Should’ve taken a grinder right down the center of that crack, and drop the concrete down an eighth of an inch to allow for more feathering…

First off all I would want to know what caused a crack that lint and secondly IF it can be repaired it should be cut out and treated as an expansion joint

It turns yellow but works ok. If you put sand on top for the camouflage

Customers don’t always want the structural repairs. Sometimes they only want the band aids due to the price points

Argamassa AC3 resolve é garantido!

Portland cement is our friend pals. People want to complicate everything!

Could you explain to me why the silica sand! Could one fill up everything with the caulking or is the silica required! Is this to save money!

Concrete isn't my area of expertise, but I really have to pause for a moment when the crack is a solid half inch wide and extends across the entire building. Something ain't right. Just saying.

That's a temporary measure unfortunately.

Ты че творишь кто так делает

Good smooth concrete

That came out surprisingly well great work😊

nice.

Is that silica sand the same stuff we use for interlocking pavers?

Best stuff I use is tooth paste stuff gets rock hard when it drys

Just curious did you not have to cut the toe plate to fill in the crack under it ?

Como un pro

Bela maquiagem...😅

Good work, but a long thin 'patch' is not a 'repair'. Nothing done here helps make the slab intact again, and this is at best cosmetic, as there was no way to 'repair' under the wall. People mix up the words all the time, just make sure you understamd what your contractor is doing. In some cases the silica sand will seem to fill forever as the gravel base and vapour barrier below the slab has sunk away, and only the rebar grid is holding it together, and unless you fill that void movement will cause the crack to reappear. A repair would fill that void first (some sort of sprayfoam process normally which bears the weight and also insulates) and dramatically reduces the probability of needing to redo the patch. As always buyer beware.

Is that repair permanent? Or will it come back after a year or two

I used some of that stuff for a mountain here in California after the earthquake

Safety is a non issue here, lol

That 8s a Mike mouse solution 😳

2 part polyurea plus carbon fiber filament which are embedded perpendicular to the Crack

Need to saw cut it open and epoxy in rebar perpendicularly, then pour

Apuesto a que en menos de un año la raja volvera a salir...

If your house cracks like this, you got a bigger problem than that

Soma flex and done.

Problems not on top it's underneath

From the wide angle shots looks like no expansion joints were used, zip strips etc. This crack is not from settling. Unfortunately too many unknowledgeable people here. The concrete made it's own expansion joint. If it was settling you would see elevation change from one side of the crack to the other. This is well within specs for a crack in concrete especially without expansion joints of some sort. But many are correct, it will crack again. In fact find me any concrete contractor that will guarantee that his concrete will not crack, and I'll show you a guy out of business in 6 months.

What is that product call i cant find the same exact one

Those are some serious cracks

What have you really have a true foundation, crack, silica sand and that grinding is just a temporary fix that might be for minor cracks but if you have an actual foundation crack that went from one end of the foundation to the other, I did not suggest this because that is a temporary fix and if you’re selling the house, it’s better to go ahead and get it fixed and cut your losses when you’re ready to sell the house

Nice man

How did that size crack happen, then again just grind it fill it sell it on , without sorting the cors .

Epoxy

You know their own professional when you’re using Ryobi tools

👍👍👍👍

I had the same exact problem on my old house. I found out that the problem was caused extensively from having the wall outlet covers not tight enough, they should have been tighter than that. Because they were loose, they were shaking from some occasional wind turbulence and that Rumbled through the floor and cracked the floor. It really bothered me for about 23 weeks and I finally had to get some cocaine to calm me down.

more easy putting dilatation, where the architect planned

It will open again!

Why does cement crack like that?

What tool is that?

Why the silica sand? Why not just fill the gap with the epoxy?

What is that u r filling in cracks

Still looks like a patch job.

We're can I perchance this product

Great repair! but please put on a proper mask.

With that ryobi setup that’s a diy right there

Залепить красиво можно, но не надолго

Tell everyone who the builder was, so we don't hire them!!!!!!

and what you did? ghis will crack again in no time. concrete floor has to be made of interupted pieces

Still gonna crack

This is a bandaid really.

En un tiempo más se volverá a agrietar pésimo trabajo

The question is "what caused the crack?"

It's still a crack

😂 like putting bandage on gunshot

Investigate ..

Cracks over an 1/8" are an actual structural issue, you don't just patch them over with some BS.

Tear out replace time will just make it worst that a cheap fix

Purdy

Complete waste if time. Silicon would have given same result

An entire crack from side to side something seriously is going wrong a little filler wont cure..

Wouldn't mortar last just as long and be a lot easier? Plus neater after cleanup with a sponge

And then what?

Это не поможет, когда плита фундамента треснула пополам.

That looks much worse than the crack did

Quedo bien culero

if you want to teach something but show safety first.

Ohh,,hail nooooo😮,,not a correct professional repair,,especially anyone who uses quickcrete scrap 😂

Make up on dead body.

🤣🤣🤣

What you did, was absolutely pointless

that's mask ain't helping with epoxy fumes

Crack chaser

worst repair ever

Fail

All that to laid down tile on that floor a waste of time and money

Wouldn't you Wana do the repair b4 putting walls up? That would have been the right way

Pon en protector a la radial