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That week in July when we poured three driveways back to back and not a single crack showed up after curing
Every pour was 4 inches thick with fiber mesh and we hit the timing perfect on the broom finish each time, what's the secret to making those lucky streaks last longer?
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miles_grant3518d ago
The mix consistency is what locked it in for you. I had a run like that last summer, three big commercial slabs, and it was all about keeping the water cement ratio dead steady batch after batch. That fiber mesh helps but it's not a magic bullet if the slump wanders. Once you find that sweet spot where the cream comes up just right without bleeding, you gotta ride it hard and not let the crew change a thing. Temperature plays a role too, I started pouring later in the evening when it cools down and that cut out a lot of the surface checking.
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alexlewis18d ago
Man that's exactly it. I had a similar streak a couple years ago doing a big warehouse floor and once I dialed in the mix it was like everything just clicked. The water cement ratio is the whole game, once you let the slump drift even a little you start seeing issues with finishing and the surface just doesn't look the same. That cream coming up without bleeding is the tell, you can just feel it when the concrete is happy. I started timing my pours to hit right when the sun was dropping and it made a massive difference for curing, no more fighting those hairline cracks. You gotta stay on top of the crew too, they'll want to cut corners with water and you gotta shut that down every time.
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