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Compressive Strength Class B Concrete

normal weight and precast concrete,concrete proportions. a. class a concrete: minimum 28 day compressive strength of 4000 psi when molded and cured in accordance with astm c 31..600 structures and concrete 08,a) the class of concrete and 28-day compressive strength. b) the source, specific gravity, percentage, and quantity of fine and coarse aggregate. the district .346 portland cement concrete,substitution of a higher class concrete in lieu of a lower class data is less than the minimum compressive strength of the higher design..

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