Water Transport in Unsaturated Cracked Concrete under Pressure
In order to analyze the process of hydraulic water infiltrating cracked concrete of underwater tunnels, the equation of water transport in unsaturated cracked concrete under pressure was proposed according to the double-porosity medium model. Penetration tests on prefabricated cracked concrete block...
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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/10.1155/2019/4504892 |
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| _version_ | 1849684443739979776 |
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| author | Yuanzhu Zhang Siming Zhang Gang Wei Xinjiang Wei Liqiao Jin Kuixin Xu |
| author_facet | Yuanzhu Zhang Siming Zhang Gang Wei Xinjiang Wei Liqiao Jin Kuixin Xu |
| author_sort | Yuanzhu Zhang |
| collection | DOAJ |
| description | In order to analyze the process of hydraulic water infiltrating cracked concrete of underwater tunnels, the equation of water transport in unsaturated cracked concrete under pressure was proposed according to the double-porosity medium model. Penetration tests on prefabricated cracked concrete blocks were conducted, and then the influence of hydraulic pressure, initial saturation, and crack width on water transport was studied. The results show that the larger the water pressure, the lower the initial saturation, and the wider the crack width, then the greater the penetration depth, which can be reasonably explained according to water motion theoretical models in this study. Moreover, the TOUGH2 software was used to simulate the change and distribution of saturation, driving potential, and water velocity of unsaturated cracked concrete, which further proved the experimental results and theoretical analysis. It reflects that both pressure potential and matric potential are the driving force of water transport in underwater cracked concrete, and the driving force will be converted with the change of concrete saturation. In addition, crack width is positively correlated with concrete permeability. |
| format | Article |
| id | doaj-art-c1df2022b8ac4fd9a059d728cd1bc5b0 |
| institution | DOAJ |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-c1df2022b8ac4fd9a059d728cd1bc5b02025-08-20T03:23:27ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/45048924504892Water Transport in Unsaturated Cracked Concrete under PressureYuanzhu Zhang0Siming Zhang1Gang Wei2Xinjiang Wei3Liqiao Jin4Kuixin Xu5School of Engineering, Zhejiang University City College, Hangzhou 310015, ChinaSchool of Engineering, Zhejiang University City College, Hangzhou 310015, ChinaSchool of Engineering, Zhejiang University City College, Hangzhou 310015, ChinaSchool of Engineering, Zhejiang University City College, Hangzhou 310015, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaSchool of Civil Engineering and Architecture, AnHui University of Science and Technology, Huainan 232001, ChinaIn order to analyze the process of hydraulic water infiltrating cracked concrete of underwater tunnels, the equation of water transport in unsaturated cracked concrete under pressure was proposed according to the double-porosity medium model. Penetration tests on prefabricated cracked concrete blocks were conducted, and then the influence of hydraulic pressure, initial saturation, and crack width on water transport was studied. The results show that the larger the water pressure, the lower the initial saturation, and the wider the crack width, then the greater the penetration depth, which can be reasonably explained according to water motion theoretical models in this study. Moreover, the TOUGH2 software was used to simulate the change and distribution of saturation, driving potential, and water velocity of unsaturated cracked concrete, which further proved the experimental results and theoretical analysis. It reflects that both pressure potential and matric potential are the driving force of water transport in underwater cracked concrete, and the driving force will be converted with the change of concrete saturation. In addition, crack width is positively correlated with concrete permeability.http://dx.doi.org/10.1155/2019/4504892 |
| spellingShingle | Yuanzhu Zhang Siming Zhang Gang Wei Xinjiang Wei Liqiao Jin Kuixin Xu Water Transport in Unsaturated Cracked Concrete under Pressure Advances in Civil Engineering |
| title | Water Transport in Unsaturated Cracked Concrete under Pressure |
| title_full | Water Transport in Unsaturated Cracked Concrete under Pressure |
| title_fullStr | Water Transport in Unsaturated Cracked Concrete under Pressure |
| title_full_unstemmed | Water Transport in Unsaturated Cracked Concrete under Pressure |
| title_short | Water Transport in Unsaturated Cracked Concrete under Pressure |
| title_sort | water transport in unsaturated cracked concrete under pressure |
| url | http://dx.doi.org/10.1155/2019/4504892 |
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