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water ratio for backfilling with sand cement mix
- Thread starter jasem81
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A mixture of sand, cement, and water for backfill sounds like flowable fill. We usually specify f'c = 1500 psi and let the supplier determine the water required. The other option would be to select a w/c ratio of say 0.45 and calculate the water.
Fine aggregate may contain moisture, so use just enough additional water to produce a flowable consistency. See the following for further suggestions:
BA
BA
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