Study on Modification of Alkali-Free Liquid Accelerator of Mine-Used Wet-Mix Shotcrete
Compound properties of an alkali-free liquid accelerator are the mainstream of accelerator research and development in the present. Combined with the technical characteristics of wet-mix shotcrete in coal mines, organic high-polymer SWF is used to modify the accelerator because of improving the bond...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/3156264 |
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| _version_ | 1850233438915788800 |
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| author | Chen Lianjun Li Pengcheng Pan Gang Bian Wenhui |
| author_facet | Chen Lianjun Li Pengcheng Pan Gang Bian Wenhui |
| author_sort | Chen Lianjun |
| collection | DOAJ |
| description | Compound properties of an alkali-free liquid accelerator are the mainstream of accelerator research and development in the present. Combined with the technical characteristics of wet-mix shotcrete in coal mines, organic high-polymer SWF is used to modify the accelerator because of improving the bond strength of the material and increasing the performance of antisagging. The mechanism of filling and thickening of SWF was analyzed from the aspects of pore characteristics and spatial structure of concrete. Through the determination of setting time, strength, and dispersibility, the optimum dose was determined, and a new style accelerator WIT-1 suitable for wet-mix shotcrete in coal mines was developed and applied on-site. The experimental results show that the addition of SWF increases the dispersibility of the accelerator product and the cohesiveness of concrete under the condition of ensuring strength and setting time, and the effect of modifying the accelerator to reduce the rebound of the wet-mix shotcrete is obvious. |
| format | Article |
| id | doaj-art-0c6d492d705a499da5b5db0bb01d82e9 |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-0c6d492d705a499da5b5db0bb01d82e92025-08-20T02:02:55ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422019-01-01201910.1155/2019/31562643156264Study on Modification of Alkali-Free Liquid Accelerator of Mine-Used Wet-Mix ShotcreteChen Lianjun0Li Pengcheng1Pan Gang2Bian Wenhui3College of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Mining and Safety Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCompound properties of an alkali-free liquid accelerator are the mainstream of accelerator research and development in the present. Combined with the technical characteristics of wet-mix shotcrete in coal mines, organic high-polymer SWF is used to modify the accelerator because of improving the bond strength of the material and increasing the performance of antisagging. The mechanism of filling and thickening of SWF was analyzed from the aspects of pore characteristics and spatial structure of concrete. Through the determination of setting time, strength, and dispersibility, the optimum dose was determined, and a new style accelerator WIT-1 suitable for wet-mix shotcrete in coal mines was developed and applied on-site. The experimental results show that the addition of SWF increases the dispersibility of the accelerator product and the cohesiveness of concrete under the condition of ensuring strength and setting time, and the effect of modifying the accelerator to reduce the rebound of the wet-mix shotcrete is obvious.http://dx.doi.org/10.1155/2019/3156264 |
| spellingShingle | Chen Lianjun Li Pengcheng Pan Gang Bian Wenhui Study on Modification of Alkali-Free Liquid Accelerator of Mine-Used Wet-Mix Shotcrete Advances in Materials Science and Engineering |
| title | Study on Modification of Alkali-Free Liquid Accelerator of Mine-Used Wet-Mix Shotcrete |
| title_full | Study on Modification of Alkali-Free Liquid Accelerator of Mine-Used Wet-Mix Shotcrete |
| title_fullStr | Study on Modification of Alkali-Free Liquid Accelerator of Mine-Used Wet-Mix Shotcrete |
| title_full_unstemmed | Study on Modification of Alkali-Free Liquid Accelerator of Mine-Used Wet-Mix Shotcrete |
| title_short | Study on Modification of Alkali-Free Liquid Accelerator of Mine-Used Wet-Mix Shotcrete |
| title_sort | study on modification of alkali free liquid accelerator of mine used wet mix shotcrete |
| url | http://dx.doi.org/10.1155/2019/3156264 |
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