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Proportioning was studied by measuring aggregate packing (C) and filling of aggregate void space (1−C) with varying volumes of cement paste ( $$V_{\rm p}$$ ) or matrix ( $$V_{\rm matrix}$$ ), i.e., all material <0.125 mm. Eleven widely different normal density aggregates with C = 0.57 to 0.71, i.e., aggregate void content (1−C) = 0.29 to 0.43, were used at constant w/c = 0.38 and flowing...
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