Computers and Concrete

  • 제30권4호
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  • Pages.257-267
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  • 2022
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  • 1598-8198(pISSN)
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  • 1598-818X(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Mechanical properties and damage constitutive model of self-compacting rubberized concrete

  • Ke, Xiaojun (Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, School of Civil Engineering and Architecture, Guangxi University) ;
  • Xiang, Wannian (Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, School of Civil Engineering and Architecture, Guangxi University) ;
  • Ye, Chunying (Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, School of Civil Engineering and Architecture, Guangxi University)
  • 투고 : 2021.10.11
  • 심사 : 2022.08.16
  • 발행 : 2022.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

Two different types of rubber aggregates (40 mesh rubber powder and 1-4 mm rubber particles respectively) were devised to substitute fine aggregates at 10%, 15%, 20% and 30% by volume in self-compacting concrete to investigate their basic mechanical properties. The results show that with the increase of rubber content, the reduction of compressive strength, splitting tensile strength and static modulus of elasticity gradually increase, and energy dissipation performance gradually increase. The rubber addition significantly reduces brittleness and decelerates damaged process. Whilst, the effect of rubber particles is greater when they are finer. Considering the mechanical properties, the optimal rubber content is 10%. It is recommended that the rubber volume content in rubberized concrete (RC) should not be higher than 20%. In addition, a constitutive model under uniaxial compression was proposed basing on the strain equivalent principle of Lemaitre and the damage theory, which was in good agreement with the test curves.

키워드

과제정보

The research presented in this paper is supported by the National Natural Science Foundation of China (project No.51668007) and the Interdisciplinary Scientific Research Foundation of GuangXi University (Grant No.2022JCB008). The financial support is highly appreciated.

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