Analysis of Influence Factors of Pore Water Pressure Change in Frozen Soil
In this article, changes of pore water pressures (PWP) in silty clay subjected to freezing and thawing were measured under an open-system condition. A total of five soil samples were tested, with water contents of 10.70%, 18.28%, 23.98%, 31.00%, and 37.65%, respectively. Each experienced a first-ste...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/3290831 |
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| author | Kun Zhang Lianhai Zhang |
| author_facet | Kun Zhang Lianhai Zhang |
| author_sort | Kun Zhang |
| collection | DOAJ |
| description | In this article, changes of pore water pressures (PWP) in silty clay subjected to freezing and thawing were measured under an open-system condition. A total of five soil samples were tested, with water contents of 10.70%, 18.28%, 23.98%, 31.00%, and 37.65%, respectively. Each experienced a first-step freezing stage, a thawing stage, and a second-step freezing stage. The results showed that changes in PWP depended on the water content, soil type, salinity, ice content, air, pressure, temperature, and others. The PWP minimum with initial water content has a “w-shaped double-valley” characteristic, which described two PWP minima existing in two optimum water contents as initial water content increased. An influence-factor analysis of PWP was proposed and gave a reasonable interpretation on the “w-shaped double-valley” characteristic of PWP. In addition, the tensiometer method to measure PWP in frozen soil was further discussed with regard to its advantages and disadvantages. |
| format | Article |
| id | doaj-art-53631fd88a5d422ba2edfa35642864c4 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-53631fd88a5d422ba2edfa35642864c42025-02-03T01:24:51ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/32908313290831Analysis of Influence Factors of Pore Water Pressure Change in Frozen SoilKun Zhang0Lianhai Zhang1Gansu Transportation Research Institute Group Co.,Ltd., Lanzhou 730000, ChinaState Key Laboratory of Frozen Soil Engineering, Chinese Academy of Sciences, Lanzhou 730000, ChinaIn this article, changes of pore water pressures (PWP) in silty clay subjected to freezing and thawing were measured under an open-system condition. A total of five soil samples were tested, with water contents of 10.70%, 18.28%, 23.98%, 31.00%, and 37.65%, respectively. Each experienced a first-step freezing stage, a thawing stage, and a second-step freezing stage. The results showed that changes in PWP depended on the water content, soil type, salinity, ice content, air, pressure, temperature, and others. The PWP minimum with initial water content has a “w-shaped double-valley” characteristic, which described two PWP minima existing in two optimum water contents as initial water content increased. An influence-factor analysis of PWP was proposed and gave a reasonable interpretation on the “w-shaped double-valley” characteristic of PWP. In addition, the tensiometer method to measure PWP in frozen soil was further discussed with regard to its advantages and disadvantages.http://dx.doi.org/10.1155/2021/3290831 |
| spellingShingle | Kun Zhang Lianhai Zhang Analysis of Influence Factors of Pore Water Pressure Change in Frozen Soil Advances in Materials Science and Engineering |
| title | Analysis of Influence Factors of Pore Water Pressure Change in Frozen Soil |
| title_full | Analysis of Influence Factors of Pore Water Pressure Change in Frozen Soil |
| title_fullStr | Analysis of Influence Factors of Pore Water Pressure Change in Frozen Soil |
| title_full_unstemmed | Analysis of Influence Factors of Pore Water Pressure Change in Frozen Soil |
| title_short | Analysis of Influence Factors of Pore Water Pressure Change in Frozen Soil |
| title_sort | analysis of influence factors of pore water pressure change in frozen soil |
| url | http://dx.doi.org/10.1155/2021/3290831 |
| work_keys_str_mv | AT kunzhang analysisofinfluencefactorsofporewaterpressurechangeinfrozensoil AT lianhaizhang analysisofinfluencefactorsofporewaterpressurechangeinfrozensoil |