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22 July, 08:05

Calculate the percent voids between aggregate particles that have been compacted by rodding, if the dry-rodded unit weight is 88.0 lb/cu ft and the bulk dry specific gravity is 2.701.

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  1. 22 July, 08:27
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    Answer:47.7%

    Explanation:

    The void content in the aggregate using the bulk density can be determined by the rodding method, as follows:

    %Voids = 100[ (SxW) - M] / (SxW)

    Where;

    S=Bulk dry specific gravity

    W=density of water (62.3 lb/cuft)

    M=Bulk density of the aggregate (88 lb/cuft)

    ℅void=100[ (2.701*62.3) - 88] / (2.701*62.3)

    =100[168.2723-88]/168.2723

    =8027.23/168.2723

    =47.7%
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