Influence of Temperature on the Strength of Concrete (Classic Reprint) - Softcover

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Excerpt from Influence of Temperature on the Strength of Concrete

Cement. All of the test specimens were made with Universal portland cement. Samples were taken at the beginning of each series and were tested for fineness, soundness, and tensile strength. The cement passed the requirements of the Standard Specifications of the American Society for Testing Materials. The tensile strength tests of neat and 1: 3 mortar briquettes made of a sample of the cc ment used in Group III of the 1914 Series gave average values of 542 and 609 lb. Per sq. In. For the neat cement at seven and twenty eight days, respectively; and 174 and 295 lb. Per sq. In. For the 1: 3 mortar at seven and twenty-eight days, respectively.

Sand. The sand used came from a deposit of glacial drift near the Wabash River at Attica, Indiana. The sand was clean and well graded. The sand of the 1913 Series was somewhat coarser than that of the 1914 lot. The sand used in Group III - 1914 Series - gave a density of a specific gravity of and contained 32 per cent voids.

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