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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.72 No.6
- 발행연도
- 2019.1
- 수록면
- 737 - 746 (10page)
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초록· 키워드
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Concrete mechanical properties change constantly with age, temperature, humidity and the other environmental factors. This research studies the effects of temperature and age on the development of concrete elastic modulus by a series of prism specimens. Elastic modulus test was conducted at various temperatures and ages in the laboratory to examine the effects of temperature and age on it. The experimental results reveal that the concrete elastic modulus decreases with the rise of temperature but increases with age. Then, a temperature coefficient K is proposed to describe the effects of temperature and validated by existing studies. Finally, on the basis of K, analytical models are proposed to determine the elastic modulus of concrete at a given temperature and age. The proposed models can offer designers an approach to obtain more accurate properties of concrete structures through the elastic modulus modification based on actual age and temperature, rather than using a value merely based on laboratory testing.
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참고문헌 (27)
참고문헌 신청
ACI / 1973 / Behavior of Concrete under Temperature Extremes / Amerrican Concrete Institute
1997 / ACI Committee 209, Prediction of Creep, Shrinkage and Temperature Effects in Concrete Structures, ACI 209R-92, ACI Committee 209 / American Concrete Institute
Behrouz Ahmadi-Nedushan / 2012 / Prediction of elastic modulus of normal and high strength concrete using ANFIS and optimal nonlinear regression models / Construction and Building Materials 36:665~673
ASTM International / 2016 / ASTM C192: Standard Practice for Making and Curing Concrete Test Specimens in Laboratory / American Society for Testing and Materials
ASTM International / 2012 / ASTM C150: Standard Specification for Portland Cement / American Society for Testing and Materials
1997 / ACI Committee 209, Prediction of Creep, Shrinkage and Temperature Effects in Concrete Structures, ACI 209R-92, ACI Committee 209 / American Concrete Institute
Behrouz Ahmadi-Nedushan / 2012 / Prediction of elastic modulus of normal and high strength concrete using ANFIS and optimal nonlinear regression models / Construction and Building Materials 36:665~673
ASTM International / 2016 / ASTM C192: Standard Practice for Making and Curing Concrete Test Specimens in Laboratory / American Society for Testing and Materials
ASTM International / 2012 / ASTM C150: Standard Specification for Portland Cement / American Society for Testing and Materials
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