Structural Engineering and Mechanics

  • 제66권2호
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  • Pages.263-271
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  • 2018
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Long-term development of compressive strength and elastic modulus of concrete

  • Yang, Shuzhen (Department of Bridge Engineering, Beijing Jiaotong University) ;
  • Liu, Baodong (Department of Bridge Engineering, Beijing Jiaotong University) ;
  • Yang, Mingzhe (China Chengda Engineering Co., Ltd.) ;
  • Li, Yuzhong (Hebei University of Architecture)
  • 투고 : 2017.07.05
  • 심사 : 2018.02.03
  • 발행 : 2018.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

Compressive strength and elastic modulus of concrete are constantly changing with age. In order to determine long-term development of compressive strength and elastic modulus of concrete, an investigation of C30 concrete cured in air conditions was carried out. Changes of compressive strength and elastic modulus up to 975 days were given. The results indicated that compressive strength and elastic modulus of concrete rapidly increased with age during the initial 150 days and then increased slowly. The gain in elastic modulus was slower than that of compressive strength. Then relationships of time-compressive strength, time-elastic modulus and compressive strength-elastic modulus were proposed by regression analysis and compared with other investigations. The trends of time-compressive strength and time-elastic modulus with age agreed best with ACI 209R-92. Finally, factors contributed to long-term development of compressive strength and elastic modulus of concrete were proposed and briefly analyzed.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

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