Uniaxial compressive behaviour of a FRP standing support made of mine wastes
Twenty-seven specimens were tested to investigate the uniaxial compression behaviour of an innovative standing support for underground space applications. The innovative standing support consisted of an external fibre reinforced polymer (FRP) jacket and the infill column made of cementitious grout,...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-08-01
|
| Series: | International Journal of Mining Science and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268623000885 |
| _version_ | 1797689529462685696 |
|---|---|
| author | Zhenjun Shan Ting Ren Jan Nemcik Guanzheng Wu Liang Zhao |
| author_facet | Zhenjun Shan Ting Ren Jan Nemcik Guanzheng Wu Liang Zhao |
| author_sort | Zhenjun Shan |
| collection | DOAJ |
| description | Twenty-seven specimens were tested to investigate the uniaxial compression behaviour of an innovative standing support for underground space applications. The innovative standing support consisted of an external fibre reinforced polymer (FRP) jacket and the infill column made of cementitious grout, tailings and coal wash rejects. Effects of the FRP layers number and water to the cementitious grout (w/g) ratio were evaluated. Test results indicated that lower w/g ratios produced stronger infill columns. With FRP confinement, the standing support demonstrated strain-hardening loading characteristics with a significant improvement in both strength and ductility. The highest strength and strain of the specimens achieved was 58.4 MPa and 11.8% respectively. Compared with the unconfined specimens, the confinement with four FRP layers increased the specimen strength and associated strain up to 3.6 and 27.0 times respectively. A correlation between the compressive strength of the infill material and the ultrasonic pulse velocity was also investigated. Furthermore, a simple design-oriented model was proposed to predict the peak strength and the corresponding strain of the innovative standing support. |
| first_indexed | 2024-03-12T01:46:51Z |
| format | Article |
| id | doaj.art-e03f54a5fda448f48ea3380ff6306006 |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-03-12T01:46:51Z |
| publishDate | 2023-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-e03f54a5fda448f48ea3380ff63060062023-09-09T04:54:59ZengElsevierInternational Journal of Mining Science and Technology2095-26862023-08-013389911000Uniaxial compressive behaviour of a FRP standing support made of mine wastesZhenjun Shan0Ting Ren1Jan Nemcik2Guanzheng Wu3Liang Zhao4School of Civil, Mining, Environmental and Architectural Engineering, University of Wollongong, Wollongong, NSW 2522, Australia; Corresponding author.School of Civil, Mining, Environmental and Architectural Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Civil, Mining, Environmental and Architectural Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaSchool of Civil, Mining, Environmental and Architectural Engineering, University of Wollongong, Wollongong, NSW 2522, AustraliaAzure Mining Technology, CCTEG, Chatswood, NSW 2067, AustraliaTwenty-seven specimens were tested to investigate the uniaxial compression behaviour of an innovative standing support for underground space applications. The innovative standing support consisted of an external fibre reinforced polymer (FRP) jacket and the infill column made of cementitious grout, tailings and coal wash rejects. Effects of the FRP layers number and water to the cementitious grout (w/g) ratio were evaluated. Test results indicated that lower w/g ratios produced stronger infill columns. With FRP confinement, the standing support demonstrated strain-hardening loading characteristics with a significant improvement in both strength and ductility. The highest strength and strain of the specimens achieved was 58.4 MPa and 11.8% respectively. Compared with the unconfined specimens, the confinement with four FRP layers increased the specimen strength and associated strain up to 3.6 and 27.0 times respectively. A correlation between the compressive strength of the infill material and the ultrasonic pulse velocity was also investigated. Furthermore, a simple design-oriented model was proposed to predict the peak strength and the corresponding strain of the innovative standing support.http://www.sciencedirect.com/science/article/pii/S2095268623000885Standing supportUnderground spacesFRPTailings and coal wash rejectsDesign-oriented model |
| spellingShingle | Zhenjun Shan Ting Ren Jan Nemcik Guanzheng Wu Liang Zhao Uniaxial compressive behaviour of a FRP standing support made of mine wastes International Journal of Mining Science and Technology Standing support Underground spaces FRP Tailings and coal wash rejects Design-oriented model |
| title | Uniaxial compressive behaviour of a FRP standing support made of mine wastes |
| title_full | Uniaxial compressive behaviour of a FRP standing support made of mine wastes |
| title_fullStr | Uniaxial compressive behaviour of a FRP standing support made of mine wastes |
| title_full_unstemmed | Uniaxial compressive behaviour of a FRP standing support made of mine wastes |
| title_short | Uniaxial compressive behaviour of a FRP standing support made of mine wastes |
| title_sort | uniaxial compressive behaviour of a frp standing support made of mine wastes |
| topic | Standing support Underground spaces FRP Tailings and coal wash rejects Design-oriented model |
| url | http://www.sciencedirect.com/science/article/pii/S2095268623000885 |
| work_keys_str_mv | AT zhenjunshan uniaxialcompressivebehaviourofafrpstandingsupportmadeofminewastes AT tingren uniaxialcompressivebehaviourofafrpstandingsupportmadeofminewastes AT jannemcik uniaxialcompressivebehaviourofafrpstandingsupportmadeofminewastes AT guanzhengwu uniaxialcompressivebehaviourofafrpstandingsupportmadeofminewastes AT liangzhao uniaxialcompressivebehaviourofafrpstandingsupportmadeofminewastes |