Study on Mechanical and Ecological Properties of Fly Ash Substrate for Ecological Slope Protection
In order to realize the resource utilization of fly ash, a kind of ecological slope protection substrate was prepared by mixing fly ash produced by MSW incineration into slope protection soil. Through the direct shear test and a leaching experiment on ion pollutants, the influence that shear strengt...
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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 Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/8095219 |
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| _version_ | 1832555337150889984 |
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| author | Juan Wan Jun Zhu Henglin Xiao Qiang Ma |
| author_facet | Juan Wan Jun Zhu Henglin Xiao Qiang Ma |
| author_sort | Juan Wan |
| collection | DOAJ |
| description | In order to realize the resource utilization of fly ash, a kind of ecological slope protection substrate was prepared by mixing fly ash produced by MSW incineration into slope protection soil. Through the direct shear test and a leaching experiment on ion pollutants, the influence that shear strength of the substrate changed with root content, ash content, and moisture content and the ecological effects of leach liquor were investigated. The results showed the following: (1) When the optimum moisture content is about 24.9%, the shear strength of the substrate is the maximum. (2) Fly ash can improve the shear strength of the soil, which can reach 1.67 times as much as that of plain soil, and the optimum content of fly ash is 5%–6.7%. (3) The root system can increase the cohesion and internal friction angle of the substrate soil but mainly increases the cohesion of the substrate soil. (4) Plants grow taller in ash-mixed soil than in plain soil. (5) When the fly ash content is 20%, the ion concentrations of Cl, Cu, and Zn are the highest: 220.7, 0.153, and 1.526 mg/L, respectively. All of them are lower than the standard limit of class V water and gradually decrease with time. Therefore, the leaching liquid will not cause environmental pollution and meet the ecological requirements. |
| format | Article |
| id | doaj-art-487aa66557b443c087f716894b1cbd6d |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-487aa66557b443c087f716894b1cbd6d2025-02-03T05:48:27ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/80952198095219Study on Mechanical and Ecological Properties of Fly Ash Substrate for Ecological Slope ProtectionJuan Wan0Jun Zhu1Henglin Xiao2Qiang Ma3Hubei University of Technology, Hubei Provincial Ecological Road Engineering Technology Research Center, Wuhan 430068, ChinaHubei University of Technology, Hubei Provincial Ecological Road Engineering Technology Research Center, Wuhan 430068, ChinaHubei University of Technology, Hubei Provincial Ecological Road Engineering Technology Research Center, Wuhan 430068, ChinaHubei University of Technology, Hubei Provincial Ecological Road Engineering Technology Research Center, Wuhan 430068, ChinaIn order to realize the resource utilization of fly ash, a kind of ecological slope protection substrate was prepared by mixing fly ash produced by MSW incineration into slope protection soil. Through the direct shear test and a leaching experiment on ion pollutants, the influence that shear strength of the substrate changed with root content, ash content, and moisture content and the ecological effects of leach liquor were investigated. The results showed the following: (1) When the optimum moisture content is about 24.9%, the shear strength of the substrate is the maximum. (2) Fly ash can improve the shear strength of the soil, which can reach 1.67 times as much as that of plain soil, and the optimum content of fly ash is 5%–6.7%. (3) The root system can increase the cohesion and internal friction angle of the substrate soil but mainly increases the cohesion of the substrate soil. (4) Plants grow taller in ash-mixed soil than in plain soil. (5) When the fly ash content is 20%, the ion concentrations of Cl, Cu, and Zn are the highest: 220.7, 0.153, and 1.526 mg/L, respectively. All of them are lower than the standard limit of class V water and gradually decrease with time. Therefore, the leaching liquid will not cause environmental pollution and meet the ecological requirements.http://dx.doi.org/10.1155/2019/8095219 |
| spellingShingle | Juan Wan Jun Zhu Henglin Xiao Qiang Ma Study on Mechanical and Ecological Properties of Fly Ash Substrate for Ecological Slope Protection Advances in Civil Engineering |
| title | Study on Mechanical and Ecological Properties of Fly Ash Substrate for Ecological Slope Protection |
| title_full | Study on Mechanical and Ecological Properties of Fly Ash Substrate for Ecological Slope Protection |
| title_fullStr | Study on Mechanical and Ecological Properties of Fly Ash Substrate for Ecological Slope Protection |
| title_full_unstemmed | Study on Mechanical and Ecological Properties of Fly Ash Substrate for Ecological Slope Protection |
| title_short | Study on Mechanical and Ecological Properties of Fly Ash Substrate for Ecological Slope Protection |
| title_sort | study on mechanical and ecological properties of fly ash substrate for ecological slope protection |
| url | http://dx.doi.org/10.1155/2019/8095219 |
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