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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.12 No.3
- 발행연도
- 2018.3
- 수록면
- 353 - 374 (22page)
이용수
초록· 키워드
오류제보하기
Cemented paste backfill structures are complex underground cementitious structures. After fresh cemented paste backfill (CPB; a mix of tailings, binder and water) is poured into underground stopes (mined-out voids), its strength which is a key mechanical design criterion of CPB structures, gradually develops with time. The development of CPB strength is governed by the coupled thermo-hydro-mechanical-chemical (THMC) processes in the CPB mass. Therefore, to assess and predict the changes to CPB strength and its distribution within the CPB mass, a multiphysics model on CPB strength is proposed in this study, and has been successfully validated against a series of experimental data. Then, the validated model is used to investigate the changes in the strength of CPB structure under various influential factors in the field (e.g., backfilling strategy, inclination angle of stope, and filling rate). The obtained results provide better insight into the process of the strength increase and spatial distribution in CPB structures as well as contribute to more cost-effective engineering designs of CPB structures.
목차
Abstract
1. Introduction
2. Modelling Approach
3. Mathematical Formulation
4. Determination of Model Parameters
5. Model Validation
6. Model Application
7. Conclusions
References
참고문헌 (69)
참고문헌 신청
Abdelaal, A. M. G. M. I. (2011). Early age mechanical behavior and stiffness development of cemented paste backfill with sand. Cananda: University of Toronto.
Aldhafeeri, Z., & Fall, M. (2016). Time and damage induced changes in the chemical reactivity of cemented paste backfill. Journal of Environmental Chemical Engineering, 4(4), 4038?4049.
Aldhafeeri, Z., & Fall, M. (2017). Sulphate induced changes in the reactivity of cemented tailings backfill. International Journal of Mineral Processing, 16, 13?23.
Barnett, S., Soutsos, M., Millard, S., & Bungey, J. (2006). Strength development of mortars containing ground granulated blast-furnace slag: Effect of curing temperature and determination of apparent activation energies. Cement and Concrete Research, 36(3), 434?440.
Belem, T., Benzaazoua, M., & Bussie`re, B. (2000). Mechanical behavior of cemented paste backfill. In Proceedings of 53rd Canadian Geotechnical Conference Montreal (pp. 373?380).
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UCI(KEPA) : I410-ECN-0101-2018-532-001900014