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http://dx.doi.org/10.11112/jksmi.2014.18.1.101

Experimental Study on Tension-Hardening and Softening Characteristics in Reinforced Mortar with CSA Expansion Agent  

Choi, Se-Jin ((재)포항산업과학연구원, 강구조연구소)
Ahn, Jung-Kil (한국철도공사)
Park, Ki-Tae (한국건설기술연구원)
Kwon, Seung-Jun (한남대학교 건설시스템공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.18, no.1, 2014 , pp. 101-110 More about this Journal
Abstract
Expansion agent is a very effective admixture for prevention of cracking due to autogenous/drying shrinkage and this can induce internal chemical prestress to embedded reinforcement. In this paper, tension-softening and hardening in cement mortar with steel and CSA expansion agent are experimentally evaluated. Cement mortar with steel reinforcement is prepared and tensile strength test is performed for evaluation of cracking and tensile behavior. In spite of slightly reduced strength and elasticity in CSA mortar, significantly increased tension-hardening behavior is evaluated in CSA mortar with induced chemical prestress. Furthermore previous tension softening models are compared with the test results and improvement are proposed.
Keywords
Tension-Hardening; Tension-Softening; CSA expansion agent; Crack; Initial cracking load;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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