2) What is the characteristic of concrete in the stress-strain curve of concrete? What is the general form of the relationship? What are the types of modulus of elasticity? A) Modulus of elasticity, product of strain in tension, chord and tangent B) Shear modulus, product of stress in strain, sequence and tangent C) Modulus of elasticity, dividing the two terms stress by strain, chord and tangent D) Modulus of elasticity, no, sequential and tangential

2) What is the characteristic of concrete in the stress-strain curve of concrete? What is the general form of the relationship? What are the types of modulus of elasticity? A) Modulus of elasticity, product of strain in tension, chord and tangent B) Shear modulus, product of stress in strain, sequence and tangent C) Modulus of elasticity, dividing the two terms stress by strain, chord and tangent D) Modulus of elasticity, no, sequential and tangential

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter20: Design Of Rigid Pavements

Section: Chapter Questions

Problem 1P: Portland cement concrete consists of what four primary elements?

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Similar questions

Which one of the following sentences is not correct? a.For many years, tensile strength has been measured in terms of the compressive strength. b.The modulus of rupture where the normal-weight concrete has an fc of 4000 psi is 474 psi. c.For lightweight concretes tensile strength depends largely on the porous aggregate. d.For normal weight concrete, the tensile strength depends primarily on the strength of bond between hardened cement paste and aggregate.
Briefly discuss each properties of concrete. a. Compressive strength b. Flexural strength c. Tensile strength d. Shear strength e. Modulus of elasticity f. Poisson’s ratio g. Shrinkage h. Creep
Using a simply supported pre-stressed concrete beam, explain the following status using stress diagrams: Stress condition due to pre-stress alone. Change of stress conditions due to the increment of external load: Decompression moment (bottom fibre compression = 0); Cracking moment (tensile strength develops at the bottom and starts cracking at the bottom); and Balance state (whole section is at an equal amount of compression).
Explain the properties of fresh and hardened concrete? Explain in details about the determination of Compressive and Flexural Strength of Concrete Explain in detail about the determination of Young’s Modulus and Stress-Strain curve for concrete.
Calculate the modulus of elasticity Ec of lightweight concrete that has a unit weight of 110 pcf and compare it to the modulus of elasticity Ec of a normal weight concrete. Both concretes have compressive strengths (f’c) of 4000 psi. Express the solutions in psi units. Please also explain why the values are different.
1.Why is the compression test the one most frequently made for concrete? 2.Discuss why cross-sectional area of compression specimens must be larger than those of tension specimens. 3.Can you think of any instances where materials are intended to fail in compression
Explain in detail about stress–strain relations of randomly oriented fiber-reinforced concrete with different fiber contents.
Briefly discuss each properties of concrete. a. Compressive strength b. Flexural strength c. Tensile strength
A hollow concrete masonry unit has actual gross dimensions of 190 mm * 190 mm* 390 mm (width * height * length). The unit is tested in a compression machine with the following results: Failure Load = 1110 kN Net volume of 6 * 106 mm3 a. Calculate the gross area compressive strength. b. Calculate the net area compressive strength.
On the basis of stress-strain curve for compressive strength of concrete, define the following Initial Modulus Tangent modulus Secant modulus Apparent modulus
6. Discuss the different types of volume change in concrete at early and long-term ages.
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 mm2Determine: a) the gross area compressive strength.b) the net area compressive strength.