this post was submitted on 07 Jul 2026
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A mixer truck typically holds around 6-8 yards of concrete, a yard is ~3900 pounds, which shakes out to 23,400-31,200 pounds, so definitely dont toss a 10 pound bag of sugar in the mixer truck.
In practice you don't need that much. Its enough that some of the concrete won't cure.
It's firmly mixed though. It's not like there's going to be a spot that fails to cure, it'll just overall cure slower than expected
Only solution is MORE SUGAR.
On the other hand, curing slower than expected creates its own problems with regard to compressive strength and reinforcement bonding, and that is before you take into account the production delays.
Gripping hand, any competent engineer is going to see the concrete hasn't cured correctly, and is going to demand it be removed and re-poured.