Mechanical properties and microstructure of ultra-retarded solidification mine tailings waste-based shotcrete
This study addresses the challenges of excessive fluidity and poor bonding performance in ultra-retarded solidification mine tailings waste-based shotcrete. The research investigates the fundamental mechanical properties of this material by optimizing the proportions of mineral powder (A), soil-rock...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525004280 |
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| author | Huazhe Jiao Qi Wang Aixiang Wu Xiaohui Liu Tingyin He Hui Wang Xiaolin Yang Junqiang Xu Gongcheng Li Mingyang Li Hongdong Shen |
| author_facet | Huazhe Jiao Qi Wang Aixiang Wu Xiaohui Liu Tingyin He Hui Wang Xiaolin Yang Junqiang Xu Gongcheng Li Mingyang Li Hongdong Shen |
| author_sort | Huazhe Jiao |
| collection | DOAJ |
| description | This study addresses the challenges of excessive fluidity and poor bonding performance in ultra-retarded solidification mine tailings waste-based shotcrete. The research investigates the fundamental mechanical properties of this material by optimizing the proportions of mineral powder (A), soil-rock waste (B), and water content (C). Comprehensive analysis was conducted through mechanical property testing, scanning electron microscopy (SEM), and X-ray diffraction (XRD) to elucidate the hydration mechanisms. The results demonstrate that a mineral powder content of 20 % (A1B2C3 to A1B1C1) yields optimal performance, with compressive, splitting tensile, and flexural strengths reaching 138.5 %, 163 %, and 154 % of baseline values, respectively. Maximum compressive strengths of 16.12 MPa, 24.18 MPa, and 32.08 MPa were achieved under specific mix conditions (C1A1B1). Additionally, increasing the content of A and C was found to extend the setting time of the cementitious material. The optimal mix ratio, comprising 20 % A, 25 % B, and 4 % C, exhibited enhanced hydration degree and superior macroscopic performance. Field construction tests confirmed that the material's viscosity, fluidity, and rapid-setting properties meet practical engineering requirements. |
| format | Article |
| id | doaj-art-55fbb05b4e7445f7b9fe28cdbd174ebf |
| institution | OA Journals |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-55fbb05b4e7445f7b9fe28cdbd174ebf2025-08-20T02:12:15ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0463010.1016/j.cscm.2025.e04630Mechanical properties and microstructure of ultra-retarded solidification mine tailings waste-based shotcreteHuazhe Jiao0Qi Wang1Aixiang Wu2Xiaohui Liu3Tingyin He4Hui Wang5Xiaolin Yang6Junqiang Xu7Gongcheng Li8Mingyang Li9Hongdong Shen10School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China; School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China; Jiaozuo Qianye New Materials Company, Jiaozuo, Henan 454003, China; Corresponding authors at: School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China.School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Safety Engineering, North China Institute of Science and Technology, Langfang, Heibei 065201, ChinaHenan Second Geology and Mineral Survey Institute Company Limited, Luoyang, Henan 471023, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China; Henan Second Geology and Mineral Survey Institute Company Limited, Luoyang, Henan 471023, China; Corresponding authors at: School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China.School of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, ChinaHenan First Geology and Mineral Survey Institute Company Limited, Zhengzhou, Henan 450000, ChinaCollege of Resources and Environmental Engineering, Shandong University of Technology, Zibo, Shandong 255000, ChinaSchool of Civil Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, ChinaJiaozuo Qianye New Materials Company, Jiaozuo, Henan 454003, ChinaThis study addresses the challenges of excessive fluidity and poor bonding performance in ultra-retarded solidification mine tailings waste-based shotcrete. The research investigates the fundamental mechanical properties of this material by optimizing the proportions of mineral powder (A), soil-rock waste (B), and water content (C). Comprehensive analysis was conducted through mechanical property testing, scanning electron microscopy (SEM), and X-ray diffraction (XRD) to elucidate the hydration mechanisms. The results demonstrate that a mineral powder content of 20 % (A1B2C3 to A1B1C1) yields optimal performance, with compressive, splitting tensile, and flexural strengths reaching 138.5 %, 163 %, and 154 % of baseline values, respectively. Maximum compressive strengths of 16.12 MPa, 24.18 MPa, and 32.08 MPa were achieved under specific mix conditions (C1A1B1). Additionally, increasing the content of A and C was found to extend the setting time of the cementitious material. The optimal mix ratio, comprising 20 % A, 25 % B, and 4 % C, exhibited enhanced hydration degree and superior macroscopic performance. Field construction tests confirmed that the material's viscosity, fluidity, and rapid-setting properties meet practical engineering requirements.http://www.sciencedirect.com/science/article/pii/S2214509525004280Ultra-retardedMine tailings wasteSoil-rock wasteDamp mixed materialShotcrete |
| spellingShingle | Huazhe Jiao Qi Wang Aixiang Wu Xiaohui Liu Tingyin He Hui Wang Xiaolin Yang Junqiang Xu Gongcheng Li Mingyang Li Hongdong Shen Mechanical properties and microstructure of ultra-retarded solidification mine tailings waste-based shotcrete Case Studies in Construction Materials Ultra-retarded Mine tailings waste Soil-rock waste Damp mixed material Shotcrete |
| title | Mechanical properties and microstructure of ultra-retarded solidification mine tailings waste-based shotcrete |
| title_full | Mechanical properties and microstructure of ultra-retarded solidification mine tailings waste-based shotcrete |
| title_fullStr | Mechanical properties and microstructure of ultra-retarded solidification mine tailings waste-based shotcrete |
| title_full_unstemmed | Mechanical properties and microstructure of ultra-retarded solidification mine tailings waste-based shotcrete |
| title_short | Mechanical properties and microstructure of ultra-retarded solidification mine tailings waste-based shotcrete |
| title_sort | mechanical properties and microstructure of ultra retarded solidification mine tailings waste based shotcrete |
| topic | Ultra-retarded Mine tailings waste Soil-rock waste Damp mixed material Shotcrete |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525004280 |
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