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Should You Wet Cure New Concrete?
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- เผยแพร่เมื่อ 15 ส.ค. 2024
- For most concrete applications using a wet curing method (or moist curing) definitely adds strength to the concrete, especially when the concrete is hydrated regularly throughout the first week. Hydration is the key to curing concrete to its maximum finished strength. Wetting or hydrating concrete during the curing process prevents it from drying out too quickly which can cause premature cracks and failures.
The first three days are the most critical for the newly cast concrete to be kept hydrated because it is too weak to withstand damage from drying too quickly. It gains approximately 40% of it's finished strength in these first three days and about 70-75% in the first week of curing. Wetting the concrete during the first 3-7 day helps prevent that early shrinking by keeping the concrete from being too dry which causes cracks or even breakage. Once the concrete is hard to the touch, it is time to start adding hydration. Do not start wetting the concrete too early as this could leave marks from droplets or a hard spray in the finish of the concrete.
Once the concrete has been cast or poured, it can be tented with plastic which keeps the moisture from evaporating due to heat, wind or sun for example. Avoid letting the plastic covering rest against the surface of the new concrete as this could leave an unwanted texture and/or coloration differences that would be visible in the top finished layer.
The time to avoid using wet curing is when the temperatures are near or below freezing. If wet concrete freezes, even briefly or just at the top layer, it will certainly experience damage if not complete failure. When the moisture inside the new concrete freezes, it will expand causing the concrete around it to fail by spalling, cracking, pitting, etc.
00:00 - Introduction
00:23 - Concrete hydration for curing
01:34 - Importance of wet curing in first 3 days
02:02 - Why use wet curing process
02:25 - Concrete curing strength timeline
02:45 - How much water to use for wet curing concrete
03:27 - When to NOT wet cure concrete
04:00 - How to treat new concrete
05:16 - Plastic tent to hold in moisture
05:44 - When to start wet curing new concrete
06:14 - Conclusion
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#CreatingConcrete #DIYconcrete #newconcrete #cement
Could listen to this guy all day, most people would say this is boring but I find it so therapeutic
O you can smell them!
This has really cemented the information in my head
lol
Company I learned finishing from was 3 times the cost but offered a lifetime guarantee on their flat work, and it was transferable to a new homeowner. We wet cured all our jobs by using linseed oil and covers if needed. We also prepped our base meticulously, wetted the base as much as we could pre pour, and we're graded the day after by a dedicated inspector working for the company. I've poured driveways that cost over 100k in our exclusive areas. Driveway would cost more than the vehicles they were driving. Company still around.
lifetime warranty on a product that is gaurunteed to crack?!?!? that seems silly lol must be a LOT of fine print in that warranty.
I worked concrete construction for over 40 years and I would only guarantee it from Fire And Theift
@@timothywells4213 I started my own company. Bumper guarantee, but way cheaper and just as good.
@@johnnichol9412I have concrete driveways in one of my rental houses I poured 20 years ago and not one crack
@@johnnichol9412 you worrying about me messing up one word is all I needed to know about you, and you’re still wrong. Concrete is always guaranteed to crack and there isn’t a single concrete expert that would say otherwise.
I heard a news report where they took below water level samples of concrete from different depths on the concrete piers that they built the cable towers on. What they found when they tested it was that the concrete was all stronger than the concrete that was used in the piers when they were poured.
Thank you. I just built a step for the first time in 23 years and I was rusty on this knowledge, and your video was very helpful!
Some real concrete information
What a professional! Thank-you.
This past summer I poured a huge patio at my church school/ and fixed cement spots in the parking lot. Our deacon didn't want to water it thinking it a waste of time. Glad to know the stats for next time! Ty
The concern would be (would have been) that the slab dries / evaporates prematurely and you would end up with shrinkage cracking and possibly curling of the slab at the edges. For the cost of a new huge patio it is definitely worth the cost of some water to cure it properly. 3 days absolute minimum.
@@creatingconcrete ty yes I agree. Next time.
Do you continue to water overnight and early morning when there is dew ?
Thanks for jumping straight to the point
I had a driveway poured, they ran out of concrete. It took 1 hr., and 20 min., before more arrived. I have a cold joint. It is 10 days old. I live in MI. Will it crack this winter? It was 90° when they poured. What do you think about this please?
You could build a steam room to put the concrete objects you build into until they are well cured. That way the air is too humid for the water in the concrete to evaporate and all of the cement has all of the water it needs for the curing process. Then you can take them out and let the unneeded water dry out without effecting the strength of the concrete.
I just had my driveway repoured and didn’t know that I should be keeping it wet. Much of it has been in direct sunlight, wind, and high temps in the low 80s.
It was poured 2.5 days ago. Is it still beneficial to hose it down with water or am I too late?
So what if I had a stem wall foundation repair? In Arizona? Do I need to basically take a hose to it. Every couple hours, every hour, should o just be out there all day for 30 days straight and just hose it as soon as I see it has dried?
For $177 cubic yard it should have a lifetime warranty
Best concrete curing advice here.
Thank you!
I just laid my concrete for my carpark. My first time.
I’m so frikkin tired.
Then I recalled I need to keep it wet but I wasn’t really sure about it.
I watched your video at the right exact moment. I can just walk on my concrete.
I gave it a good spray and I’ll keep it up for a week as per your instructions.
Great explanation!
After my spray I just found puddle forming. Ahhhhh!
Maybe it’ll be different once cured.
Anyone have any suggestions?
It’s pretty close to a slope which leads to a run off into a drain.
Theoretically it makes sense, but we had a slab that delaminate overnight after being watered.
Pouring concrete over concrete is a challenging technical process. The delmamination between two layers of concrete would have nothing to do with wet curing. This failure would be from improper techniques preparing the old slab and installing the new layer.
I hope you can respond to me. I make concrete weights for weight lifting. I buy concrete that contains gravel for extra weight and some strength. Says max psi is 4000. I mix fiberglass fibers in the mix and then i pour a bit of acrylic latex pain. Very high quality stuff that i had laying arond. I tend to eyeball this and try to acheive a oatmeal look of mix with slightly wetted. Vs super dry.
After i reinforce my weights with some chicken wire mesh that is pretty compact. I then pour. Cover in a trash bag and try to find a shaded area for it to cure. You said we should wet cure so once this is dry can i simply soak the concrete in a container for the 3 days once the first part of the concrete is cured ? This should make it much stronger?
Thank you so much for sharing your knowledge
I was a little confused when you mentioned when to start watering it. First you said once it’s set, then you said once you’re able to walk on it. To me those are very different. Set is same day, walk on it is at least 24 hours after the pour.
Well I’ve seen it able to be walked on and nothing happening in just a few hours
Assuming you have a good base that is either dampened or a vapor barrier, all you need to do is retard the surface evaporation. By far the easiest way to do that is by applying a sealer once able to do so. Then just let it hydrate.
What about colored concrete???
awesome video, thank you!
Excellent and well done. Thank you!
Cheers
Great informative video 👌
Awesome, thank you!
Hello . In terms of concrete vessels , can they be submerged in water for the first three days?
Yes, definitely. This would be ideal
What would happen if fresh concrete was covered with nylon which would prevent any moisture to be lost?
Not different than covering with plastic. It retains both moisture and heat, which is good to a certain degree, beyond which the heat may be too much. So this would really depend on the site conditions where you are pouring this. It is common to cover fresh concrete with plastic, burlap, etc.
@@creatingconcrete I understand how important wetting is. But I see lots of efflorescence white spots in my new cement decking.
Can this be removed? Should I keep wetting?
When you say "wet" the concrete for 3 days, does that mean to keep it submerged under water? I am making concrete bowls. Some of the concrete bowls I am mixing them with terrazzo chips made from jesmonite. I love your videos. I have learned a lot. Thanks!
If small, yes you can fully submerge it and this will only benefit the quality of the cure. Otherwise, it simply means that you must not let the concrete fully dry out so do whatever you have to do to avoid it fully drying out when brand new.
Can i cure concrete pottery while submerged in water
I am sorry I do not know enough about pottery to answer this question. Unless you mean concrete which is in the shape of pottery, which in that case wet curing is probably a good idea.
would you recommend wet cure when casting coaster? or is that overkill?
I technically recommend to wet cure everything. It will make it stronger but also more consistent for coloration and how it accepts future color / sealer layers.
i got a concrete driveway with fiber 4000 psi 10 days ago monday (today is htursyda) ir tained lightly 10 hours after or so a tiny bit. the guycame to cut the devieway the next day and I assume he likely waterd it down. i spratyed mist on to wet it when i got home from work , did it in the morning and afternoon the following day. the 3rd day we got a huge rain storm. the 4th and 5th and even 6th eday it did rain durin gthe day or night a copule times. and then i just didn't do anythign after that. and the temperatures were typically high aroun d90 and low in the mid 60s and being in michigan it was somehwat humid. does that sound like i should be good?
Building a home in Texas this summer. Builder using fly ash in concrete mix and says for that reason does not need to wet cure. I disagree and am willing to sprinkle the slab foundation myself to properly cure. Who is right in this case?
With higher volumes of fly ash it is recommended to wet cure. Can your contractor provide any reference that says the opposite?
most concrete contractors spray their concrete with curing spray the day of the pour, totally eliminating the need to waste boat loads of time spraying it with water literally all day for a week. If you hire a hack, they probably don't even spray it. But the special spray cure that's applied once the day of the pour is the #1 way to cure concrete.
@@kuntakentay6969There is college engineering professor that studies concrete for a living that disagrees with what you just said. th-cam.com/video/1siLxrpm_PE/w-d-xo.html
Its guaranteed from fire and thieft
Seem to some goofy
Stomach talking 🤢
Stomach talking 🤢