1998 Volume 63 Issue 504 Pages 1-6
In this study, the relation between concrete strength and property of macro-void is investigated by testing mortar and concrete specimens containing various combination of artificial void in them. The shapes of macro-void in the experiment are sphere, circle disk and oval disk. As a result, the estimate strength obtained from the following equation showed adequate correlation with the measured strength. Fc/Fc_0=exp(a Az), where Fc/Fc_0 : relative strength of concrete, Az : maximum ratio of projected sectional area of void, a:constant.
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