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Influence of Carbonation on Mechanical Properties of Concretes

注意：本论文已在Journal of Shanghai Jiaotong University,Vol. E-8,No.1, 2003, 85-88发表
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LIANG Fa-yun1 (梁发云) , 　CHEN Long-zhu1 (陈龙珠) , 　LI Jian-bao2 (李检保)
(1. Schoo l of Civil Eng. andM echanics, Shanghai Jiao tong Univ. , Shanghai 200030, China;
2. School of Civil Eng. , Tongji Univ. , Shanghai 200092)

Abstract: As one of the most important factors that determine the lifespan of a reinforced concrete structure, carbonat ion not only corrodes the reinforcing steel, but also changes the mechanical properties of concrete. For better understanding the performance of carbonated concrete structure, it is necessary to study the mechanical propert
of carbonated concrete. The strees-strain relationship of carbonated concrete was analyzed on the basis of experiments. The specimens were made by means of accelerated carbonation and then compressed on the test ing machine. Some very impo rtant characteristics of carbonated concrete were revealed by the testing results. In addition, a useful constitutive model of carbonated concrete, which proved to be suitable for analyzing carbonated concrete members, was established in this research.
Keyword: carbonation; concrete; acceleration; mechanical properties; stress-strain relationship

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