Coupled Effect of Curing Temperature and Moisture on THM Behavior of Cemented Paste Backfill
Cemented paste backfill (CPB), a mixture of tailings, binder, and water, is widely and continually utilized in underground mines for subsidence control and disposal of surface hazardous waste discharge. The mechanical strength of CPB, which is the key for the backfill structure to play the role of s...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/1870952 |
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| author | Wenyuan Xu Runkang Zhao Xiaocong Yang Lijie Guo Chaowu Xie Di Wu |
| author_facet | Wenyuan Xu Runkang Zhao Xiaocong Yang Lijie Guo Chaowu Xie Di Wu |
| author_sort | Wenyuan Xu |
| collection | DOAJ |
| description | Cemented paste backfill (CPB), a mixture of tailings, binder, and water, is widely and continually utilized in underground mines for subsidence control and disposal of surface hazardous waste discharge. The mechanical strength of CPB, which is the key for the backfill structure to play the role of supporting overlying roof and controlling subsidence, is governed by complex factors (thermal, hydraulic, and mechanical loads), particularly strongly affected by the environmental conditions, such as ambient temperature and humidity. Thus, it is crucial to understand and assess the response of CPB subjected to the loads mentioned above, so as to better ascertain its performance and obtain a cost-effective, safe, and stable CPB structure. Accordingly, a coupled THM model is developed to describe and analyze the performance of CPB. Comparisons between model simulation and experiment data prove the capability of the developed model in predicting the evolutions of temperature and internal relative humidity, as well as stress-strain relation of CPB. The obtained results indicate that all these properties are significantly affected by ambient humidity and temperature. |
| format | Article |
| id | doaj-art-0c9d3b8241e0426cb2dd5c8c4462f569 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-0c9d3b8241e0426cb2dd5c8c4462f5692025-08-20T03:54:15ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/18709521870952Coupled Effect of Curing Temperature and Moisture on THM Behavior of Cemented Paste BackfillWenyuan Xu0Runkang Zhao1Xiaocong Yang2Lijie Guo3Chaowu Xie4Di Wu5BGRIMM Technology Group, Beijing, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, ChinaBGRIMM Technology Group, Beijing, ChinaBGRIMM Technology Group, Beijing, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing, ChinaCemented paste backfill (CPB), a mixture of tailings, binder, and water, is widely and continually utilized in underground mines for subsidence control and disposal of surface hazardous waste discharge. The mechanical strength of CPB, which is the key for the backfill structure to play the role of supporting overlying roof and controlling subsidence, is governed by complex factors (thermal, hydraulic, and mechanical loads), particularly strongly affected by the environmental conditions, such as ambient temperature and humidity. Thus, it is crucial to understand and assess the response of CPB subjected to the loads mentioned above, so as to better ascertain its performance and obtain a cost-effective, safe, and stable CPB structure. Accordingly, a coupled THM model is developed to describe and analyze the performance of CPB. Comparisons between model simulation and experiment data prove the capability of the developed model in predicting the evolutions of temperature and internal relative humidity, as well as stress-strain relation of CPB. The obtained results indicate that all these properties are significantly affected by ambient humidity and temperature.http://dx.doi.org/10.1155/2020/1870952 |
| spellingShingle | Wenyuan Xu Runkang Zhao Xiaocong Yang Lijie Guo Chaowu Xie Di Wu Coupled Effect of Curing Temperature and Moisture on THM Behavior of Cemented Paste Backfill Advances in Civil Engineering |
| title | Coupled Effect of Curing Temperature and Moisture on THM Behavior of Cemented Paste Backfill |
| title_full | Coupled Effect of Curing Temperature and Moisture on THM Behavior of Cemented Paste Backfill |
| title_fullStr | Coupled Effect of Curing Temperature and Moisture on THM Behavior of Cemented Paste Backfill |
| title_full_unstemmed | Coupled Effect of Curing Temperature and Moisture on THM Behavior of Cemented Paste Backfill |
| title_short | Coupled Effect of Curing Temperature and Moisture on THM Behavior of Cemented Paste Backfill |
| title_sort | coupled effect of curing temperature and moisture on thm behavior of cemented paste backfill |
| url | http://dx.doi.org/10.1155/2020/1870952 |
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