Strength, Modulus of Elasticity, and Brittleness Index of Rubberized Concrete
Publication: Journal of Materials in Civil Engineering
Volume 20, Issue 11
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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Acknowledgments
The writers would like to acknowledge the financial support provided by the Science and Technology Commission of Shanghai Municipality (Grant No. UNSPECIFIED03DZ12024) on this research. In particular, the writers would like to thank Liu Xian, Tian Wei, Tao Jin, Zhao Guixiang and Xiong Jie at Tongji University for their assistance during the experiments. The writers would also like to acknowledge the support of the Center for Energy System Research at Tennessee Technological University.
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© 2008 ASCE.
History
Received: Aug 21, 2006
Accepted: Mar 7, 2008
Published online: Nov 1, 2008
Published in print: Nov 2008
Notes
Note. Associate Editor: Byung Hwan Oh
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