Chapter 7, Problem 7.7QP

You are working on a concrete mix design that requires each cubic yard of concrete to have 0.45 water-cement ratio, 1963 lb/yd³ of dry gravel, 4% air content, and 565 lb/yd³ of cement. The available gravel has a specific gravity of G_gravel = 2.7, a moisture content of 1.6%, and absorption of 2.4%. The available sand has a specific gravity of G_sand = 2.5, a moisture content of 4.8%, and absorption of 1.5%. For each cubic yard of concrete needed on the job, calculate the weights of cement, moist gravel, moist sand, and water that should be added to the batch. Summarize and total the mix design when finished (don’t include air entrainer in summary).