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  1. LKPRECAST

    Unstable mix after addition of HRWDA

    Goal is to not have to vibrate our precast forms. Max w/c is .44 for our vaults. After the addition of Adva 575 HRWRA at 5oz per 100wt of cement the mix is unstable and segregates. A grace rep said get the batch to a 1" to 3" slump before adding the HRWR, however to achieving a 2" slump exceeds...

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