Materials for Civil and Construction Engineers (4th Edition)
4th Edition
ISBN: 9780134320533
Author: Michael S. Mamlouk, John P. Zaniewski
Publisher: PEARSON
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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 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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You are working on a concrete mix design that requires each cubic yard ofconcrete to have 0.45 water–cement ratio, 1165 kg/m3 of dry gravel, 4% aircontent, and 335 kg/m3 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 meter of concrete needed on the job, calculate the mass 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, 1165 kg/m³ of dry
gravel, 4% air
content, and 335 kg/m³ 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 meter of concrete needed on the job,
calculate the mass 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 a 0.43 water-cement ratio, 2077
lb/yd3 of dry gravel 244 lb/yd3 of water, and 4% air content.
The available gravel has a specific gravity of Ggravel = 2.6,
moisture content of 2.3% and absorption of 4.5%. The
available sand has a specific gravity of Gsand = 2.4, a moisture
content of 2.2% and absorption of 1.7%. Air entrainer is to be
included using the manufacturers specification of 0.1 fl. oz /
1% air / 100 lb cement. For each cubic yard 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.
Chapter 7 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 7 - The design engineer specifies a concrete strength...Ch. 7 - A project specifies a concrete strength of 24.1...Ch. 7 - A project specifies a concrete strength of at...Ch. 7 - What is your recommendation for the maximum size...Ch. 7 - A concrete mix with a 3-in. slump, w/c ratio of...Ch. 7 - Prob. 7.6QPCh. 7 - You are working on a concrete mix design that...Ch. 7 - Design the concrete mix according to the following...Ch. 7 - Design the concrete mix according to the following...Ch. 7 - The design of a concrete mix requires 1173 kg/m3...
Ch. 7 - Prob. 7.11QPCh. 7 - Prob. 7.12QPCh. 7 - Students in the materials lab mixed concrete with...Ch. 7 - Students in the materials lab mixed concrete with...Ch. 7 - Why is it necessary to measure the air content of...Ch. 7 - What do we mean by curing concrete? What will...Ch. 7 - Discuss five different methods of concrete curing.Ch. 7 - Draw a graph showing the typical relation between...Ch. 7 - Why is extra water harmful to fresh concrete, but...Ch. 7 - Discuss the change in volume of concrete at early...Ch. 7 - Discuss the creep response of concrete structures....Ch. 7 - Prob. 7.22QPCh. 7 - On one graph, draw a sketch showing the typical...Ch. 7 - Using Figure 7.34, a. Determine the ultimate...Ch. 7 - Three concrete mixes with the same ingredients,...Ch. 7 - Three concrete mixes with the same ingredients,...Ch. 7 - Three 100 mm 200 mm concrete cylinders with water...Ch. 7 - Students in the materials class prepared three 4 ...Ch. 7 - Three 150 mm 300 mm concrete cylinders with water...Ch. 7 - Three 6 in. 12 in. concrete cylinders with water...Ch. 7 - A normal-weight concrete has an average...Ch. 7 - Discuss the significance of the compressive...Ch. 7 - What is the standard size of PCC specimens to be...Ch. 7 - Prob. 7.34QPCh. 7 - What is the purpose of performing the flexure test...Ch. 7 - What are the advantages of using a third-point...Ch. 7 - Consider a standard flexural strength specimen of...Ch. 7 - To evaluate the effect of a certain admixture on...Ch. 7 - To evaluate the effect of a certain admixture on...Ch. 7 - Prob. 7.40QPCh. 7 - Prob. 7.41QPCh. 7 - A normal-weight concrete has an average...Ch. 7 - Three batches of concrete were prepared using the...Ch. 7 - Three batches of concrete were prepared using the...Ch. 7 - Prob. 7.45QPCh. 7 - Prob. 7.46QPCh. 7 - Discuss two nondestructive tests to be performed...Ch. 7 - Discuss the concept of concrete maturity meters.Ch. 7 - Discuss four alternatives that increase the use...Ch. 7 - What is self-consolidating concrete? How are its...Ch. 7 - Prob. 7.51QPCh. 7 - Two 6 in. 12 in. concrete cylinders with randomly...Ch. 7 - Discuss the concept of high-performance concrete....Ch. 7 - Comparing PCC with mild steel, answer the...Ch. 7 - Prob. 7.55QP
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- Mix designarrow_forwardYou are working on a concrete mix design that requires each cubic yard ofconcrete to have 0.45 water–cement ratio, 1165 kg/m3 of dry gravel, 4% air content, and 335 kg/m3 of cement. The available gravel has a specific grav-ity 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 of4.8%, and absorption of 1.5%. For each cubic meter of concrete needed onthe job, calculate the mass of cement, moist gravel, moist sand, and waterthat should be added to the batch. Summarize and total the mix design whenfinished (don’t include air entrainer in summary).arrow_forwardYou are working on a concrete mix design that requires each cubic meter of concreteto have 0.40 water–cement ratio, 1165 kg/m3 of dry gravel, 4% air content, and 335kg/m3 of cement (Specific Gravity = 3.15). The available gravel has a specific gravityof (S.G) gravel = 2.7, a moisture content of 1.6%, and absorption of 2.4%. The availablesand has a specific gravity of (S.G) sand = 2.5, a moisture content of 4.8%, andabsorption of 1.5%.For each cubic meter of concrete needed on the job, calculate the mass of cement,moist gravel, moist sand, and water that should be added to the batch. Summarizethe total the mix design in a table.arrow_forward
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