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 Ggravel = 2.7, a moisture content of 1.6%, and absorption of 2.4%. The available sand has a specific gravity of Gsand = 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)
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 Ggravel = 2.7, a moisture content of 1.6%, and absorption of 2.4%. The available sand has a specific gravity of Gsand = 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)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
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 Ggravel = 2.7, a moisture content of 1.6%, and absorption of 2.4%. The
available sand has a specific gravity of Gsand = 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)
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