Question: 2. Air content comparestheoreticaldensity on an air ftreebasis with the actual density: T = Theoretical density oftconcrete (Ibs/ft): 151.4 lbs/ft Air content in % =

2. Air content comparestheoreticaldensity on an air ftreebasis with the actual density: T = Theoretical density oftconcrete (Ibs/ft): 151.4 lbs/ft Air content in % = (theoretical density - unit weight) / theoretical density * 100 Z = T - D AC= Z /T * 100

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