Concrete
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Formula
- 10% cement, 75% aggregate, 15% water [1]
- 150 kg/m3 of cement - with concrete at 4000 lb/cu yd [2] - was sufficient to get about 6000 psi concrete strength [3]. Does this mean abouut 8% of cement?
- 500 lb per yard of cement in concrete is recommended - read a thesis on it - [4]