Microcracking and Behavior of High-Strength Concrete Subject to Biaxial Tension-Compression Stresses PDF Download
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Author: Jose' Calixto Publisher: ISBN: Category : Concrete Languages : en Pages : 109
Book Description
Research at The University of Texas has been conducted to determine the properties and micro-cracking behavior of high-strength concrete subjected to biaxial tension-compression stresses. Static tests and microcrack mapping was performed on 35 specimens which consisted of 5-in. square x 1/2-in. thick plates cut from concrete beams. Tests were performed in a biaxial test machine developed at The University of Texas. The primary variables studied were the discontinuity and ulitimate stress levels at each stress ratio. The microcrack patterns and total crack lengths at various pre-and post-discontinuity stress levels were mapped and recorded. Results indicated that even small amounts of tensile stress reduced stress reduced the ultimate compressive strength of the specimens dramatically. The uniaxial strength of the plates was 75 percent that of standard 4-in. x 8-in. cylinders when both were tested at 172 days after casting. Young's modulus of elasiticity was found to be 3 percent higher for specimens loaded in tension than compression. Keywords: Biaxial tests, High strength, Concrete microcracking.
Author: Jose' Calixto Publisher: ISBN: Category : Concrete Languages : en Pages : 109
Book Description
Research at The University of Texas has been conducted to determine the properties and micro-cracking behavior of high-strength concrete subjected to biaxial tension-compression stresses. Static tests and microcrack mapping was performed on 35 specimens which consisted of 5-in. square x 1/2-in. thick plates cut from concrete beams. Tests were performed in a biaxial test machine developed at The University of Texas. The primary variables studied were the discontinuity and ulitimate stress levels at each stress ratio. The microcrack patterns and total crack lengths at various pre-and post-discontinuity stress levels were mapped and recorded. Results indicated that even small amounts of tensile stress reduced stress reduced the ultimate compressive strength of the specimens dramatically. The uniaxial strength of the plates was 75 percent that of standard 4-in. x 8-in. cylinders when both were tested at 172 days after casting. Young's modulus of elasiticity was found to be 3 percent higher for specimens loaded in tension than compression. Keywords: Biaxial tests, High strength, Concrete microcracking.
Author: Jon Charles Herrin Publisher: ISBN: Category : Concrete Languages : en Pages : 164
Book Description
The main purpose of the research project reported herein was to determine the stress-strain behavior, ultimate strength, and failure mechanism of high-strength concrete subjected to biaxial compression. Model concrete plate specimens, composed of nine aggregate discs embedded in a mortar matrix, were used. Three different strength and elastic properties were used in order to determine the effects of material properties on the behavior of high-strength concrete subjected to biaxial compression. The plate specimens were tested using four biaxial stress ratios: 0 (uniaxial), 02, 0.5, and 1.0. Deformations in both the major and minor principal directions were measured using Direct Current Differential Transducers. Stress-Strain characteristics, discontinuity, ultimate strength and failure modes in biaxial compression as a function of materials properties are discussed.
Author: David W. Fowler Publisher: ISBN: Category : Languages : en Pages : 11
Book Description
Research at The University of Texas has been conducted to determine the properties and behavior of plain, high-strength concrete subjected to biaxial-cyclic compression. Static and dynamic tests were performed on a total of 95 specimens which consisted of 5-in. square x 1/2-in. thick plates of concrete. Tests were performed in a biaxial test machine developed at The University of Texas. The primary variables studies were the maximum stress level, expressed as a percent of the uniaxial-static compressive strength, and the biaxial stress ration, expressed as the ratio of the vertical to horizontal stress. Other variables included the stress range and the effect of the moisture content in the material.
Author: Jose' Calixto
Author: Jose' Calixto
Author: Mohammed Ebrahim Tasuji
Author: Jose Marcio Fonseca Calixto
Author: Oral Buyukozturk
Author: Jon Charles Herrin
Author: Mohammad Mahmoud Smadi
Author: David W. Fowler
Author: 
Author: Tony C. Liu
Author: Ali Salem Ngab