Factors Influencing Concrete Strength
Walter H. Price
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The effect of mix proportions, type and brand of cement, availablity of moisture for curing, accelerators and curing temperatures on the rate and potential strength development of concrete are discessed. The influence of rate and frequency of load applications, dimensions of test specimens and lateral restraint on the indicated strength are also discussed, and information is furnished on the variations in strength which might be expected on a typical job. Compressive, tensile, flexural, bond and shearing strengths are compared with the strengths of cores drilled from structures at later ages. Information is also furnished on strength loss from freezing and thawing and alkali-aggregate expansion.