Abstract

The compressive strengths of low-porosity pastes made from a Type I and a Type II clinker were investigated. Besides the effect of the type of cement, the effects of different grinding aids, surface of the cement, water-cement ratio (0.2 and 0.3), temperature of hydration (5°, 25°, and 50°), and the age of the paste on compressive strength were determined. By and large, the strength results correlated well with degree of hydration and total porosity, but there was definite indication of at least one other factor. The distribution of pore volume in pores different sizes is suggested as a third factor influencing compressive strength.

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