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ISBN-10: 0870314610

ISBN-13: 9780870314612

This file summarizes at present to be had information regarding excessive power concrete (HSC). subject matters mentioned comprise collection of fabrics, concrete combination proportions, ordering, batching, blending, transporting, putting, qc, concrete homes, structural layout, fiscal issues, and functions.

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7% do not warrant air entrainment for freezing-and-thawing protection. On the other hand, for members exposed to critical saturated conditions, there is no well-documented field HIGH-STRENGTH CONCRETE 363R-31 experience to prove that air entrainment is not needed (Kosmatka et al. 2001). Practitioners may use ASTM test method C666 test to evaluate freezing-and-thawing resistance and C672 for scaling resistance of HSC. 13—Abrasion resistance Abrasion is wearing due to repeated rubbing and friction.

15 was reported to range from 5 to 11°F per 100 lb/yd3 (5 to 10°C per 59 kg/m3) of cementitious material for mixtures with 30 to 32% fly ash replacement. These mixtures had temperature rises from 50 to 110°F (28 to 61°C) in HSC members with the aforementioned surface area-to-volume ratios containing 985 lb/yd3 (581 kg/m3) of cementitious materials (Myers and Carrasquillo 2000). The temperature rise will be affected by the shape and geometry of the structural element, as illustrated in the bridge girder shown in Fig.

002, the slope of the concrete curve is nearly zero, and it can be thought of as deforming plastically, with little or no increase in stress. 85fc′ (Ag – Ast ) + fy Ast (7-1) where fc′ is the specified compressive strength of the concrete; fy is the yield strength of steel; Ag is the gross area of section; and Ast = total area of longitudinal steel. 363R-36 ACI COMMITTEE REPORT Fig. 2—Compressive stress distributions. 85 is used to account for the difference in the in-place strength of concrete in columns compared with the strength of the same concrete mixture obtained from standard compression tests on cylinders.

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ACI 363R-10 - Report on High-Strength Concrete by ACI

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