Published: Jan 1956
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The mechanical properties of aggregates may or may not have an effect on the strength of concrete. Since concrete is an assemblage of individual pieces of aggregate bound together by a cementing medium, its strength is primarily a function of the quality of the cement paste. Its strength is also dependent on the bond between the cement paste and the aggregate. If either the strength of the paste or the bond between the paste and the aggregate is low, a concrete of poor quality will be obtained irrespective of the quality of the aggregate. But when cement paste of good quality is provided, and its bond with the aggregate is satisfactory, then the mechanical properties of the aggregate will influence the strength of the concrete.
Physical Research Engineer, Bureau of Public Roads, Washington, D. C.
Paper ID: STP39443S