دورية أكاديمية
Study on triaxial compression performance and damage characteristics of fiber-reinforced ecological matrix cementing gangue gypsum fill material.
| العنوان: | Study on triaxial compression performance and damage characteristics of fiber-reinforced ecological matrix cementing gangue gypsum fill material. |
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| المؤلفون: | Jiang Q; School of Mining, Liaoning Technical University, Fuxin, China., Yin Z; School of Mining, Liaoning Technical University, Fuxin, China., Yin H; Chongqing University Liyang Smart City Research Institute, Liyang, China., Ma R; School of Civil Engineering, Liaoning Technical University, Fuxin, China. |
| المصدر: | PloS one [PLoS One] 2024 May 28; Vol. 19 (5), pp. e0299001. Date of Electronic Publication: 2024 May 28 (Print Publication: 2024). |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: San Francisco, CA : Public Library of Science |
| مواضيع طبية MeSH: | Compressive Strength* , Materials Testing* , Calcium Sulfate*/chemistry, Construction Materials/analysis ; Polypropylenes/chemistry ; Coal Ash/chemistry ; Stress, Mechanical ; Cementation/methods |
| مستخلص: | Polypropylene fiber was equally mixed into alkali-activated slag fly ash geopolymer in order to ensure the filling effect of mine goaf and improve the stability of cemented gangue paste filling material with ecological matrix. Triaxial compression tests were then conducted under various conditions. The mechanical properties and damage characteristics of composite paste filling materials are studied, and the damage evolution model of paste filling materials under triaxial compression is established, based on the deviatoric stress-strain curve generated by the progressive failure behavior of samples. Internal physical and chemical mechanisms of the evolution of structure and characteristics are elucidated and comprehended via the use of SEM-EDS and XRD micro-techniques. The results show that the fiber can effectively improve the ultimate strength and the corresponding effective stress strength index of the sample within the scope of the experimental study. The best strengthening effect is achieved when the amount of NaOH is 3% of the mass of the solid material, the amount of fiber is 5‰ of the mass of the solid material, and the length of the fiber is about 12 mm. The action mode of the fiber in the sample is mainly divided into single-grip anchoring and three-dimensional mesh traction. As the crack initiates and develops, connection occurs in the matrix, where the fiber has an obvious interference and retardation effect on the crack propagation, thereby transforming the brittle failure into a ductile failure and consequently improving the fracture properties of the ecological cementitious coal gangue matrix. The theoretical damage evolution model of a segmented filling body is constructed by taking the initial compaction stage end point as the critical point, and the curve of the damage evolution model of the specimen under different conditions is obtained. The theoretical model is verified by the results from the triaxial compression test. We concluded that the experimental curve is in good agreement with the theoretical curve. Therefore, the established theoretical model has a certain reference value for the analysis and evaluation of the mechanical properties of paste filling materials. The research results can improve the utilization rate of solid waste resources. Competing Interests: The authors have declared that no competing interests exist. (Copyright: © 2024 Jiang et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.) |
| المشرفين على المادة: | WAT0DDB505 (Calcium Sulfate) 0 (Polypropylenes) 0 (Coal Ash) |
| تواريخ الأحداث: | Date Created: 20240528 Date Completed: 20240528 Latest Revision: 20240530 |
| رمز التحديث: | 20240530 |
| مُعرف محوري في PubMed: | PMC11132506 |
| DOI: | 10.1371/journal.pone.0299001 |
| PMID: | 38805439 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1932-6203 |
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| DOI: | 10.1371/journal.pone.0299001 |