Effects of Ca(OH)2 on mechanical damage and energy evolution characteristics of limestone adsorbed with H2S
The occurrence of hydrogen sulfide (H2S) gas gusher accidents is a worrying engineering disaster during tunnel construction travel through stratum adsorbed with H2S. To mitigate the risks associated with H2S, alkaline solutions are applied within the tunnel and injected into the rock mass ahead of t...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-02-01
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| Series: | Applied Rheology |
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| Online Access: | https://doi.org/10.1515/arh-2025-0032 |
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| author | Cheng Yugang Yang Jinjie Zeng Mengru Cheng Liang Zhang Xuefu Hao Yong Hu Bo Du Xidong |
| author_facet | Cheng Yugang Yang Jinjie Zeng Mengru Cheng Liang Zhang Xuefu Hao Yong Hu Bo Du Xidong |
| author_sort | Cheng Yugang |
| collection | DOAJ |
| description | The occurrence of hydrogen sulfide (H2S) gas gusher accidents is a worrying engineering disaster during tunnel construction travel through stratum adsorbed with H2S. To mitigate the risks associated with H2S, alkaline solutions are applied within the tunnel and injected into the rock mass ahead of the tunnel face to neutralize and eliminate the adsorbed H2S. Samples from the Huangjiagou tunnel in southwestern China are systematically investigated to understand the interaction between H2S-adsorbed limestone and calcium hydroxide (Ca(OH)2) solutions at concentrations of 1, 3, and 5%. The results indicate that exposure of the limestone to Ca(OH)2 solution leads to the erosion of aluminum silicate minerals and the subsequent precipitation of potassium feldspar crystals. The uniaxial compressive strength and modulus of elasticity of the limestone decreased by 48.82 and 28.31%, respectively, following an exponential trend as the concentration of Ca(OH)2 solution increased. Additionally, an increase in the number of abrupt energy changes detected via acoustic emission is observed in limestone treated with higher concentrations of alkaline solutions. Energy evolution analysis indicates that alkaline-treated limestone exhibits significantly enhanced energy dissipation capacity during the loading process, making dissipative energy more likely to dominate. |
| format | Article |
| id | doaj-art-daab6622b64e48b4bb39e9067e4d8f0e |
| institution | OA Journals |
| issn | 1617-8106 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Applied Rheology |
| spelling | doaj-art-daab6622b64e48b4bb39e9067e4d8f0e2025-08-20T02:12:59ZengDe GruyterApplied Rheology1617-81062025-02-013513613710.1515/arh-2025-0032Effects of Ca(OH)2 on mechanical damage and energy evolution characteristics of limestone adsorbed with H2SCheng Yugang0Yang Jinjie1Zeng Mengru2Cheng Liang3Zhang Xuefu4Hao Yong5Hu Bo6Du Xidong7State Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing, 400074, ChinaState Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing, 400074, ChinaDepartment of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States of AmericaChina Merchants Chongqing Communication Research & Design Institute Co., Ltd., Chongqing, 400067, ChinaState Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing, 400074, ChinaChongqing Expressway Wuyunkai Construction Co., Ltd., Chongqing Expressway Group Co., Ltd., Chongqing, 401147, ChinaState Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong University, Chongqing, 400074, ChinaFaculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650093, ChinaThe occurrence of hydrogen sulfide (H2S) gas gusher accidents is a worrying engineering disaster during tunnel construction travel through stratum adsorbed with H2S. To mitigate the risks associated with H2S, alkaline solutions are applied within the tunnel and injected into the rock mass ahead of the tunnel face to neutralize and eliminate the adsorbed H2S. Samples from the Huangjiagou tunnel in southwestern China are systematically investigated to understand the interaction between H2S-adsorbed limestone and calcium hydroxide (Ca(OH)2) solutions at concentrations of 1, 3, and 5%. The results indicate that exposure of the limestone to Ca(OH)2 solution leads to the erosion of aluminum silicate minerals and the subsequent precipitation of potassium feldspar crystals. The uniaxial compressive strength and modulus of elasticity of the limestone decreased by 48.82 and 28.31%, respectively, following an exponential trend as the concentration of Ca(OH)2 solution increased. Additionally, an increase in the number of abrupt energy changes detected via acoustic emission is observed in limestone treated with higher concentrations of alkaline solutions. Energy evolution analysis indicates that alkaline-treated limestone exhibits significantly enhanced energy dissipation capacity during the loading process, making dissipative energy more likely to dominate.https://doi.org/10.1515/arh-2025-0032tunnel engineeringh2s treatmentca(oh)2 injectionmineral changesrock mechanics damage |
| spellingShingle | Cheng Yugang Yang Jinjie Zeng Mengru Cheng Liang Zhang Xuefu Hao Yong Hu Bo Du Xidong Effects of Ca(OH)2 on mechanical damage and energy evolution characteristics of limestone adsorbed with H2S Applied Rheology tunnel engineering h2s treatment ca(oh)2 injection mineral changes rock mechanics damage |
| title | Effects of Ca(OH)2 on mechanical damage and energy evolution characteristics of limestone adsorbed with H2S |
| title_full | Effects of Ca(OH)2 on mechanical damage and energy evolution characteristics of limestone adsorbed with H2S |
| title_fullStr | Effects of Ca(OH)2 on mechanical damage and energy evolution characteristics of limestone adsorbed with H2S |
| title_full_unstemmed | Effects of Ca(OH)2 on mechanical damage and energy evolution characteristics of limestone adsorbed with H2S |
| title_short | Effects of Ca(OH)2 on mechanical damage and energy evolution characteristics of limestone adsorbed with H2S |
| title_sort | effects of ca oh 2 on mechanical damage and energy evolution characteristics of limestone adsorbed with h2s |
| topic | tunnel engineering h2s treatment ca(oh)2 injection mineral changes rock mechanics damage |
| url | https://doi.org/10.1515/arh-2025-0032 |
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