Strength, Modulus of Elasticity, and Brittleness Index of Rubberized Concrete
by L. Zheng, Ph.D. Student, (Dept. of Civ. and Envir. Engrg., Tennessee Technological Univ., 1020 Stadium Dr., Prescott Hall 314, Cookeville, TN 38505. E-mail: lzheng21@tntech.edu), X. Sharon Huo, (Prof., Dept. of Civ. and Envir. Engrg., Tennessee Technological Univ., 1020 Stadium Dr., Prescott Hall 216, Cookeville, TN 38505 (corresponding author). E-mail: xhuo@tntech.edu), and Y. Yuan, (Prof., School of Civ. Engrg., Tongji Univ., Shanghai 200092, China. E-mail: yuany@tongji.edu.cn)
Journal of Materials in Civil Engineering, Vol. 20, No. 11, November 2008, pp. 692-699, (doi 10.1061/(ASCE)0899-1561(2008)20:11(692))
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| Document type: |
Journal Paper |
| Abstract: |
This paper presents a study of rubberized concretes designed by replacing coarse aggregate in normal concrete with ground and crushed scrap tire rubber in various volume ratios. The objective of the study was to investigate the effect of rubber types and rubber content on strength and deformation properties. The compressive strength, static, and dynamic modulus of elasticity of rubberized concrete were tested and studied. The stress-strain hysteresis loops were obtained by loading, unloading, and reloading on specimens. Brittleness index values were calculated based on the hysteretic loops. The experiments revealed that strength and modulus elasticity of rubberized concrete decreased with the increasing amount of rubber content. Compressive strength and modulus of elasticity of crushed rubberized concrete were lower than that of ground rubberized concrete. An American Concrete Institute equation could reasonably predict modulus of elasticity of rubberized concrete. Brittleness index values of rubberized concrete were lower than that of normal concrete, which means that rubberized concrete had higher ductility performance than that of normal concrete. |
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