Proportioning Workable Concrete Mixtures with Specific Gravity of Cement-Water Paste

ACI Materials Journal | September 1, 2005| | Copyright

Strengths of all materials are proportional to their respective unit weights and specific gravities relative to age and maturity. The principal material controlling the strength and maturity of concrete is the cement-water paste. Therefore, its specific gravity (SPG) is the major strength factor in the proportioning of concrete mixtures at any specific age and curing regime. The SPG of the cement-water paste is a function of the weight relationship of Abram's Law of water-cement ratio (w/c) divided by the volumetric relationship of w/c. The SPG is actually the key to economic mixture ...

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