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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.9 No.4
- 발행연도
- 2015.12
- 수록면
- 391 - 399 (9page)
이용수
초록· 키워드
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This study modeled the compressive strength and elastic modulus of hardened cement that had been treated with an expansive additive to reduce shrinkage, in order to determine the mechanical properties of the material. In hardened cement paste with an expansive additive, hydrates are generated as a result of the hydration between the cement and expansive additive. These hydrates then fill up the pores in the hardened cement. Consequently, a dense, compact structure is formed through the contact between the particles of the expansive additive and the cement, which leads to the manifestation of the strength and elastic modulus. Hence, in this study, the compressive strength and elastic modulus were modeled based on the concept of the mutual contact area of the particles, taking into consideration the extent of the cohesion between particles and the structure formation by the particles. The compressive strength of the material was modeled by considering the relationship between the porosity and the distributional probability of the weakest points, i.e., points that could lead to fracture, in the continuum. The approach used for modeling the elastic modulus considered the pore structure between the particles, which are responsible for transmitting the tensile force, along with the state of compaction of the hydration products, as described by the coefficient of the effective radius. The results of an experimental verification of the model showed that the values predicted by the model correlated closely with the experimental values.
목차
Abstract
1. Introduction
2. Modeling of Compressive Strength
3. Modeling of Elastic Modulus
4. Verification of Model
5. Conclusions
References
참고문헌 (19)
참고문헌 신청
[학술지(정기간행물)] - Al-Rawi, R. S. / 1976 / Choice of curing temperature for accelerated cured concrete / Cement and Concrete Research 16 (5) : 603 ~ 611
[학술대회논문] - Choi, H. G. / 2012 / Expansion–contraction behaviors and cracking control effects of expansion concrete in buildings / Proceedings of the 5th ACF international conference
[학술대회논문] - Choi, H. G. / 2012 / Expansion/contraction behavior and cracking control effect of expansive concrete in building structure / Proceedings of the Japan Concrete Institute 34 (1) : 424 ~ 429
[학술대회논문] - Hori, A. / 2000 / Cracking behavior of expansive concrete in homoaxial tension / Proceedings of the Japan Concrete Institute 22 (2) : 511 ~ 516
[학술지(정기간행물)] - Hua, C. / 1997 / Analyses and models of the autogenous shrinkage of hardening cement paste II modeling at scale of hydration grains / Cement and Concrete Research 27 (2) : 245 ~ 258
[학술대회논문] - Choi, H. G. / 2012 / Expansion–contraction behaviors and cracking control effects of expansion concrete in buildings / Proceedings of the 5th ACF international conference
[학술대회논문] - Choi, H. G. / 2012 / Expansion/contraction behavior and cracking control effect of expansive concrete in building structure / Proceedings of the Japan Concrete Institute 34 (1) : 424 ~ 429
[학술대회논문] - Hori, A. / 2000 / Cracking behavior of expansive concrete in homoaxial tension / Proceedings of the Japan Concrete Institute 22 (2) : 511 ~ 516
[학술지(정기간행물)] - Hua, C. / 1997 / Analyses and models of the autogenous shrinkage of hardening cement paste II modeling at scale of hydration grains / Cement and Concrete Research 27 (2) : 245 ~ 258
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