You are working on a concrete mix design that requires each cubic yard of concrete to have a 0.43 water–cement ratio, 1232 kg/m3 of dry gravel, 145 kg/m3 of water, and 4% air content. The available gravel has a specific gravity of Ggravel = 2.60, a moisture content of 2.3%, and absorption of 4.5%. The available sand has a specific gravity of Gsand = 2.40, a moisture content of 2.2%, and absorption of 1.7%. Air entrainer is to be included using the manufacturers specification of 6.3 mL/1% air/100 kg cement. For each cubic meter of concrete needed on the job, calculate the weight of cement, moist gravel, moist sand, and water that should be added to the batch. Summarize and total the mix design when finished.
You are working on a concrete mix design that requires each cubic yard of concrete to have a 0.43 water–cement ratio, 1232 kg/m3 of dry gravel, 145 kg/m3 of water, and 4% air content. The available gravel has a specific gravity of Ggravel = 2.60, a moisture content of 2.3%, and absorption of 4.5%. The available sand has a specific gravity of Gsand = 2.40, a moisture content of 2.2%, and absorption of 1.7%. Air entrainer is to be included using the manufacturers specification of 6.3 mL/1% air/100 kg cement. For each cubic meter of concrete needed on the job, calculate the weight of cement, moist gravel, moist sand, and water that should be added to the batch. Summarize and total the mix design when finished.
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