An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration Grouting
To meet the demand of antiseepage and reinforcement of soil dams, a kind of permeable polyurethane grouting material was developed. A visual steady-pressure grouting test device was designed to study the law of polyurethane diffusion and reinforcement in silt under different pressure, and the intera...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8834331 |
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| _version_ | 1832547699085279232 |
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| author | Chaojie Wang Qi Liu Chengchao Guo Yangyang Xia Yanjie Hao Mingsheng Shi Peng Zhao |
| author_facet | Chaojie Wang Qi Liu Chengchao Guo Yangyang Xia Yanjie Hao Mingsheng Shi Peng Zhao |
| author_sort | Chaojie Wang |
| collection | DOAJ |
| description | To meet the demand of antiseepage and reinforcement of soil dams, a kind of permeable polyurethane grouting material was developed. A visual steady-pressure grouting test device was designed to study the law of polyurethane diffusion and reinforcement in silt under different pressure, and the interaction mechanism of grout and soil body structure was explored microscopically. The results showed that, with the increase in the grouting pressure, the diffusion speed rose, and the diffusion pattern of grout in the soil also changed from permeation diffusion to permeation splitting. Under the effect of grouting pressure, more tiny cracks will occur in the soil structure, leading to the use of more grout, thus increasing the strength of the consolidated soil by more than 10 times. The results of SEM-EDS and mercury intrusion test proved that the polyurethane had a significant filling effect on the soil structure, which could effectively reduce the porosity of the soil and cement the soil particles through wrapping, complexing, and hydrogen bonding, thereby improving the soil properties. Moreover, the results revealed from a microscopic perspective that the grouting altered the pore structure of the soil structure through the seepage-erosion-splitting coupling effect, but when the grouting pressure exceeded 0.4 MPa, the soil particle and grout would be partially remixed and arranged closely, showing a phenomenon of jet grouting. Finally, the material was used in engineering practice, achieving a satisfactory grouting treatment effect. |
| format | Article |
| id | doaj-art-4901f4fba56142f59fdd0ff9fa187537 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-4901f4fba56142f59fdd0ff9fa1875372025-02-03T06:43:36ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88343318834331An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration GroutingChaojie Wang0Qi Liu1Chengchao Guo2Yangyang Xia3Yanjie Hao4Mingsheng Shi5Peng Zhao6School of Water Science and Engineering, Zhengzhou University, Zhengzhou 450000, ChinaSchool of Water Science and Engineering, Zhengzhou University, Zhengzhou 450000, ChinaNational and Local Joint Engineering Laboratory for Major Infrastructure Inspection and Repair Technology (Henan), Zhengzhou, ChinaSchool of Water Science and Engineering, Zhengzhou University, Zhengzhou 450000, ChinaSchool of Water Science and Engineering, Zhengzhou University, Zhengzhou 450000, ChinaSchool of Water Science and Engineering, Zhengzhou University, Zhengzhou 450000, ChinaSchool of Water Science and Engineering, Zhengzhou University, Zhengzhou 450000, ChinaTo meet the demand of antiseepage and reinforcement of soil dams, a kind of permeable polyurethane grouting material was developed. A visual steady-pressure grouting test device was designed to study the law of polyurethane diffusion and reinforcement in silt under different pressure, and the interaction mechanism of grout and soil body structure was explored microscopically. The results showed that, with the increase in the grouting pressure, the diffusion speed rose, and the diffusion pattern of grout in the soil also changed from permeation diffusion to permeation splitting. Under the effect of grouting pressure, more tiny cracks will occur in the soil structure, leading to the use of more grout, thus increasing the strength of the consolidated soil by more than 10 times. The results of SEM-EDS and mercury intrusion test proved that the polyurethane had a significant filling effect on the soil structure, which could effectively reduce the porosity of the soil and cement the soil particles through wrapping, complexing, and hydrogen bonding, thereby improving the soil properties. Moreover, the results revealed from a microscopic perspective that the grouting altered the pore structure of the soil structure through the seepage-erosion-splitting coupling effect, but when the grouting pressure exceeded 0.4 MPa, the soil particle and grout would be partially remixed and arranged closely, showing a phenomenon of jet grouting. Finally, the material was used in engineering practice, achieving a satisfactory grouting treatment effect.http://dx.doi.org/10.1155/2020/8834331 |
| spellingShingle | Chaojie Wang Qi Liu Chengchao Guo Yangyang Xia Yanjie Hao Mingsheng Shi Peng Zhao An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration Grouting Advances in Civil Engineering |
| title | An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration Grouting |
| title_full | An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration Grouting |
| title_fullStr | An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration Grouting |
| title_full_unstemmed | An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration Grouting |
| title_short | An Experimental Study on the Reinforcement of Silt with Permeable Polyurethane by Penetration Grouting |
| title_sort | experimental study on the reinforcement of silt with permeable polyurethane by penetration grouting |
| url | http://dx.doi.org/10.1155/2020/8834331 |
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