Answered: What is the value of the Whitney stress…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Forms are required to hold the concrete in place until it hardens sufficiently. True False
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Two 150 mm x 300 mm concrete cylinders with randomly oriented steel fiber contents of 0 and 2% by weight, respectively. After curing for 28 days, the specimens were subjected to increments of compressive loads until fail- ure. The load versus deformation results were as shown in Table P7.45. TABLE P7.45 Specimen no. 2 Fiber content (%) 2 Deformation (mm) Load (kN) 0.0305 507 507 0.0610 645 (failure) 681 0.0915 578 0.0915 396 1.525 338 (failure) Assuming that the gauge length is the whole specimen height, determine the following: a. The compressive stresses and strains for each specimen at each load increment. b. Plot stresses versus strains for the two specimens on one graph. c. The initial modulus of elasticity for each specimen. d. The ultimate strength for each specimen. e. The strain at failure for each specimen. f. Toughness. Curves may be approximated with a series of straight lines. g. Comment on the effect of adding fiber on the following: i. Modulus of elasticity ii. Ultimate…
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10
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What is the value of the Whitney stress block parameter, β1, for 6000 psi concrete?