Materials for Civil and Construction Engineers (2nd Edition)
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ISBN: 9781292154411
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Textbook Question
Chapter 7, Problem 7.21QP
Discuss the creep response of concrete structures. Provide examples of the effect of creep on concrete structures.
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Discuss the creep response of concrete structures. Provide examples of theeffect of creep on concrete structures.
Chapter 7 Solutions
Materials for Civil and Construction Engineers (2nd 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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- How to get the value of compressive strength of concrete f'c, given the nominal shear stress on concrete fv=0.88 MPa?arrow_forwardQ2: Discuss positive aspects of bleeding in concrete.arrow_forwardA 150mm diameter cylindrical concrete specimen was tested for compressive strength. What would be the maximum applied force in kN when the stress at failure is 41.4 MPa?arrow_forward
- A hollow concrete masonry unit has an actual dimension of 150mm x 200mm x 400mm(W x H x L). The unit was tested in a compression machine with the following result.Failure load = 1,200 kNNet volume = 4,400,000 mm3Determine: a) the gross area compressive strength.b) the net area compressive strength.arrow_forward100mm diameter cylindrical concrete specimen was tested for compressive strength. The sample failed when a maximum applied force was 200,000N. What is the stress at failure of the specimen in MPa?arrow_forwardA hollow concrete masonry unit has actual gross dimensions of 7@5/8 in. *7@5/8 in.* 15@5/8 in. (width * height * length). The unit is tested in a compressionmachine with the following results:Failure Load = 250 kipsNet volume of 366.9 in.3a. Calculate the gross area compressive strength.b. Calculate the net area compressive strength.arrow_forward
- Write the parameters that affect the compressive strength of concrete.arrow_forwardDiscuss the factors affecting the creep resistance of materials?arrow_forwardA concrete specimen with b = d is supported at both ends 600mm apart. It is tested for flexure strength with load at midspan of 100kN and failed with a flexural stress of 52.083 MPa. What is the dimension b and d of the specimen in mm?arrow_forward
- A hollow concrete masonry unit has actual gross dimensions of 190 mm X190 mm X 390 mm (width X height X length). The unit is tested in a compression machine with the following results:Failure Load = 1110 kNNet volume of 6 X 106 mm3a. Calculate the gross area compressive strength.b. Calculate the net area compressive strength.arrow_forwardCalculate the compressive stress in a 6-in.-diameter by 12-in.-high concrete test specimen if the total deformation under load is 0.015. Calculate the total load on the test cylinder.arrow_forwardControlling excessive temperature gradients in large concrete masses is verycrucial. Explain in your own words four such methods available to minimize thetemperature gradient.arrow_forward
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