The design of a concrete mix requires 2,314 lb/yd3 of gravel having a moisture content of 3.5% and absorption of 4.2%, and 899

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The design of a concrete mix requires 2,314 lb/yd3 of gravel having a moisture content of 3.5% and absorption of 4.2%, and 899 lb/yd3 of sand having a moisture content of 5.7% and absorption of 1.4%, and 244 lb/yd3 of free water. What is the weight of the mixing water per cubic yard that should be used at the job site? Group of answer choices

Engineering

Comment (1) on “The design of a concrete mix requires 2,314 lb/yd3 of gravel having a moisture content of 3.5% and absorption of 4.2%, and 899”

  1. Weight of mixing water=224.541 lb

    Step-by-step explanation:

    Taking 1 cubic yard of concrete

    Mass of gravel = 2314 lb

    Moisture content = 3.5% Absorption 4.2%

    Extra water needed = (4.2-3.5)*2314/100= 16.198 lb

    Mass of sand= 899 lb

    Moisture content = 5.7% Absorption =1.4%

    Water released = (5.7-1.4)*899/100= 38.657 lb

    Free water = 244 lb

    Weight of mixing water = free water + extra water needed-water released = 244+16.198-38.657=224.541 lb

    Weight of mixing water=224.541 lb

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