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In: Civil Engineering

8) Design a concrete mix for the following conditions and constraints using the absolute volume method:...

8) Design a concrete mix for the following conditions and constraints using the absolute volume method: Design Environment : Non-air entrained concrete will be used to cast Concrete frame. Required design strength(5000 psi) Minimum dimension (10 in.) Minimum space between rebars (1.5 in.) Minimum cover over rebars (2.5 in.) Standard deviation of compressive strength (600 psi) , (25 samples) Available Materials Cement Type II , moderate exposure Coarse aggregate Nominal Maximum size 1 in. river gravel (round) Bulk oven dry specific gravity =2.65, absorption = 3%, oven dry density 110 pcf , Moisture content 2%. Fine aggregate : Natural sand , Bulk oven-dry specific 2.5 , Absorption = 1% , Moisture content = 0.5% , Fineness modulus = 2.80

Solutions

Expert Solution

Therefore final weight of constituents

1.Water : 349 lb/yd^3

2. Cement : 780 lb/yd^3

3.Coarse Aggregate : 2030 lb/yd^3

4.:Fine aggregate : 844 lb/yd^3

Ally Wells answered 1 year ago
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