That depends on the concrete, as well as weather conditions, and the load the concrete would be subjected to. Concrete gains strength over time and the usual benchmarks are 7 days, and 28 days. At 28 days concrete has usually cured to nearly its maximum strength. For a concrete footing in a residential environment say a deck or home the concrete will usually cure for a minimum of three days before the formwork is removed and the rest of the structure is built. For a commercial or civil project the curing is subject to the engineers discretion.
usually in construction we treat concrete (4-6) blocks for 2 weeks before send it for strength test. the tester keep it for 1 month before send us the results, they test one block every week.
self compacted concrete
Q1
1 archybald and sealyer
the strength that it has gained is the main thing, but usually 5 to 7 days as a rough guide.
According to the related link below; the required amount to cover 1 square yard with 4 inches of concrete is 6.6 60 pounds bags.
I am concreting a footing for 1m depth now and the balance .5 m depth after 3 days of first poured concrete.Should i use Nittobond
It starts curing the second they put water in it.
That would depend on the kind of concrete. Normally longer is better. The slower the curing process the stronger the concrete.
24 days
Q1
It depends on the size of the concrete blocks
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1 archybald and sealyer
50/3 cubic yds of concrete
14.814813 m3
12.5 Blocks required for 1 m2
the strength that it has gained is the main thing, but usually 5 to 7 days as a rough guide.
0.2