Concrete Curing?

LarryBud

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L3130
Dec 5, 2020
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The floor of my new barn is 8 days old.

It's 4" with fiber and rebar. We back the base with AB3 gravel. The concrete guys came and left without me ever seeing them ( they did a great job from what I can tell ). Anyway, I hear 7, 14 or 28 days before bringing in a truck / tractor.

Can anyone set me straight?
 

85Hokie

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Concrete gets to 70% hardness after 7 days ............... and it never really gets to 100% ;)
The weight of the truck/tractor should be the determining factor.
3-5 days for a car to park on it - depending on weather and cure temps

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GreensvilleJay

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BX23-S
Apr 2, 2019
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usually they come back NEXT DAY to cut the 'joints' while it's 'soft', don't wait a week.
After a week most vehicles can be parked on it, but avoid big tractors and forklifts.....
 

mikester

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I'd wait 30 days before loading the concrete and parking heavy stuff. You can do it now but it sucks if you get spalls and oil spots from grease drips on your brand new floor...especially if it's a polished finish.

Enjoy your new barn!
 

fried1765

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The floor of my new barn is 8 days old.

It's 4" with fiber and rebar. We back the base with AB3 gravel. The concrete guys came and left without me ever seeing them ( they did a great job from what I can tell ). Anyway, I hear 7, 14 or 28 days before bringing in a truck / tractor.

Can anyone set me straight?
Spray on (as in garden sprayer) a good quality concrete sealer, before putting anything on the floor!
It will make it much easier to clean the floor from future stains etc.
 
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DaveFromMi

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My barn floor was concreted with fiber this morning. The company owner said wait 24 hours to walk on it, 7 days to park the tractor on it.
 

Njtool

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I’ve poured garage and shed floors etc. 90% strength at 14 days, someone posted a graph.

If it were mine, I would wait until I could use epoxy on the floor, I think it has to cure 28 days.

If you wanted to go an easier route, you could find sodium silicate to seal the concrete
 
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Freeheeler

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Depends on the concrete. Did they spray a sealant to cure or are you spraying water several times a day or did they cover with plastic? Or did they just pour and walk away? My recent project I used the 5000 lb quickrete. It gets stronger quicker, but still says 28 days for curing. I went 10" deep so I'll be giving it the full 28 days, spraying with water 3 times a day for the first 7 days, no sealant, no plastic.
I didn't look to see what tractor you have of if the rears are filled or not, that could make a difference. Either way, I'd play it save and wait, not worth rushing it and having to deal with cracks later. Good luck with the project, sounds like it's coming along nicely.
 
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LarryBud

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Depends on the concrete. Did they spray a sealant to cure or are you spraying water several times a day or did they cover with plastic? Or did they just pour and walk away? My recent project I used the 5000 lb quickrete. It gets stronger quicker, but still says 28 days for curing. I went 10" deep so I'll be giving it the full 28 days, spraying with water 3 times a day for the first 7 days, no sealant, no plastic.
I didn't look to see what tractor you have of if the rears are filled or not, that could make a difference. Either way, I'd play it save and wait, not worth rushing it and having to deal with cracks later. Good luck with the project, sounds like it's coming along nicely.
I'll go with poured it, smoothed it out, cut joints the next day and that's it. It's still empty and I can do whatever is appropriate at this time. Lot's of work ( fun work ) ahead.
 

fried1765

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Nov 14, 2019
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Suggestions for a good sealer?
It has been years since I have done any concrete sealing.
If you research concrete sealers on Google, I am certain that you will come up with some good options.
 

Steamer Pete

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There's a lot of moisture coming off concrete as it cures. Caution as you park stuff in there more prone to rusting for a while. And keep the doors open to keep moisture from building up.
 
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Digimont

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Aug 15, 2022
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The more time you wait, the better. Theoretically, you should wait a month for the concrete to harden firmly. But
 
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DaveFromMi

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Apr 14, 2021
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I used a sealer, probably the same as below 3 days after the concrete was poured. I read that using a sealer traps water in the concrete longer making it possible to achieve >100% strength over the course of a month.