Predicting mechanical development of mine functional mortar: experiment and thermodynamic analysis
Shotcrete mortar is an imperative material for tunnel surface supporting. The mine environment with different temperature affects the mechanical development of mortar, resulting in a difficult to predict its compressive strength development at high temperature. In this investigation, the compressive...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-03-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542300056X |
| _version_ | 1797858837902917632 |
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| author | Binbin Huo Jixiong Zhang Meng Li Nan Zhou Qiang Zhang Xiao Wang Lingling Shen Kunpeng Yu Zhihui Sun |
| author_facet | Binbin Huo Jixiong Zhang Meng Li Nan Zhou Qiang Zhang Xiao Wang Lingling Shen Kunpeng Yu Zhihui Sun |
| author_sort | Binbin Huo |
| collection | DOAJ |
| description | Shotcrete mortar is an imperative material for tunnel surface supporting. The mine environment with different temperature affects the mechanical development of mortar, resulting in a difficult to predict its compressive strength development at high temperature. In this investigation, the compressive strength, hydration heat, mineral evolution, pore content of mortar samples at 20 and 60 °C, containing partial steel slag powder, were comprehensively compared by experiment and simulation in order to provide a reliable approach for underground materials compressive strength prediction. Results show that the compressive strength development of the samples cured at 20 and 60 °C, is consisted with the corresponding cumulative hydration heat, and the correlation coefficient is higher than 0.96. The hydrates and heat of the samples are significantly affected by the cement type, mineral admixture, and temperature. Indeed, increasing temperature significantly accelerates the minerals’ hydration and heat release. Combining the composition, pore and single mineral hydration heat simulation, the mortar compressive strength development of the mortar in deep mine can be predicted by a thermodynamic model. |
| first_indexed | 2024-04-09T21:19:49Z |
| format | Article |
| id | doaj.art-be6232c8408c44b69618796c1fd974e8 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:19:49Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-be6232c8408c44b69618796c1fd974e82023-03-28T06:45:57ZengElsevierJournal of Materials Research and Technology2238-78542023-03-0123967975Predicting mechanical development of mine functional mortar: experiment and thermodynamic analysisBinbin Huo0Jixiong Zhang1Meng Li2Nan Zhou3Qiang Zhang4Xiao Wang5Lingling Shen6Kunpeng Yu7Zhihui Sun8Corresponding author.; State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaCorresponding author.; State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou, 221116, ChinaShotcrete mortar is an imperative material for tunnel surface supporting. The mine environment with different temperature affects the mechanical development of mortar, resulting in a difficult to predict its compressive strength development at high temperature. In this investigation, the compressive strength, hydration heat, mineral evolution, pore content of mortar samples at 20 and 60 °C, containing partial steel slag powder, were comprehensively compared by experiment and simulation in order to provide a reliable approach for underground materials compressive strength prediction. Results show that the compressive strength development of the samples cured at 20 and 60 °C, is consisted with the corresponding cumulative hydration heat, and the correlation coefficient is higher than 0.96. The hydrates and heat of the samples are significantly affected by the cement type, mineral admixture, and temperature. Indeed, increasing temperature significantly accelerates the minerals’ hydration and heat release. Combining the composition, pore and single mineral hydration heat simulation, the mortar compressive strength development of the mortar in deep mine can be predicted by a thermodynamic model.http://www.sciencedirect.com/science/article/pii/S223878542300056XMine functional materialsMine resource utilizationMortar strengthStrata controlThermodynamic model |
| spellingShingle | Binbin Huo Jixiong Zhang Meng Li Nan Zhou Qiang Zhang Xiao Wang Lingling Shen Kunpeng Yu Zhihui Sun Predicting mechanical development of mine functional mortar: experiment and thermodynamic analysis Journal of Materials Research and Technology Mine functional materials Mine resource utilization Mortar strength Strata control Thermodynamic model |
| title | Predicting mechanical development of mine functional mortar: experiment and thermodynamic analysis |
| title_full | Predicting mechanical development of mine functional mortar: experiment and thermodynamic analysis |
| title_fullStr | Predicting mechanical development of mine functional mortar: experiment and thermodynamic analysis |
| title_full_unstemmed | Predicting mechanical development of mine functional mortar: experiment and thermodynamic analysis |
| title_short | Predicting mechanical development of mine functional mortar: experiment and thermodynamic analysis |
| title_sort | predicting mechanical development of mine functional mortar experiment and thermodynamic analysis |
| topic | Mine functional materials Mine resource utilization Mortar strength Strata control Thermodynamic model |
| url | http://www.sciencedirect.com/science/article/pii/S223878542300056X |
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