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Question: the concrete is required for an interior column the 28day...
Question details
The concrete is required for an interior column. The 28-day compressive strength should be 4,000 psi. The slump should be between 3 and 4 inches and the maximum aggregate size should not exceed 1 inch. The properties of the materials are as follows: Cement : Type I, specific gravity = 3.15 Coarse Aggregate: Bulk specific gravity (SSD) = 2.72; absorption capacity = 1.3%; dry-rodded unit weight = 103 lb/ft3; surface moisture = 1% Fine Aggregate: Bulk specific gravity (SSD) = 2.67; absorption capacity = 1.5%; fineness modulus = 2.70 surface moisture = 2%
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