Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue Value
This study described a new methylene blue test to measure the methylene blue value (MBV) for 15 cohesive soils and established the relationship between MBV and plasticity index (PI) and between MBV and percent passing No. 200 sieve (P200), respectively. Thereafter, the soil-water characteristic curv...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/9213674 |
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| author | Junhui Zhang Junhui Peng Yejuan Chen Jue Li Feng Li |
| author_facet | Junhui Zhang Junhui Peng Yejuan Chen Jue Li Feng Li |
| author_sort | Junhui Zhang |
| collection | DOAJ |
| description | This study described a new methylene blue test to measure the methylene blue value (MBV) for 15 cohesive soils and established the relationship between MBV and plasticity index (PI) and between MBV and percent passing No. 200 sieve (P200), respectively. Thereafter, the soil-water characteristic curves (SWCCs) for 15 cohesive soils based on Fredlund and Xing’s model were generated by the pressure plate test. Then, regression equations for determining the four fitting parameters in a previously developed SWCC equation by using the measured MBV were utilized to generate the SWCC for the cohesive soils. At the same time, the slope parameter, bf, in the SWCC equations was found to be associated with the moisture susceptibility of cohesive soils. A higher bf value indicates that the material is more moisture susceptible. In addition, a lower MBV/PI/P200 shows a lower suction at the same degree of saturation; on the other hand, a higher MBV/PI/P200 presents a higher suction. Therefore, the moisture-holding capacity of cohesive soils increases with increasing MBV, PI, and P200. Finally, the proposed estimation method was validated by a comparison between the four determined fitting parameters from MBV and the pressure plate test. |
| format | Article |
| id | doaj-art-845f673381ec42df9153a04de2d04762 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-845f673381ec42df9153a04de2d047622025-02-03T05:58:10ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/92136749213674Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue ValueJunhui Zhang0Junhui Peng1Yejuan Chen2Jue Li3Feng Li4National Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha 410114, ChinaNational Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha 410114, ChinaChangsha Commerce and Tourism College, Changsha 410001, ChinaNational Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha 410114, ChinaNational Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science and Technology, Changsha 410114, ChinaThis study described a new methylene blue test to measure the methylene blue value (MBV) for 15 cohesive soils and established the relationship between MBV and plasticity index (PI) and between MBV and percent passing No. 200 sieve (P200), respectively. Thereafter, the soil-water characteristic curves (SWCCs) for 15 cohesive soils based on Fredlund and Xing’s model were generated by the pressure plate test. Then, regression equations for determining the four fitting parameters in a previously developed SWCC equation by using the measured MBV were utilized to generate the SWCC for the cohesive soils. At the same time, the slope parameter, bf, in the SWCC equations was found to be associated with the moisture susceptibility of cohesive soils. A higher bf value indicates that the material is more moisture susceptible. In addition, a lower MBV/PI/P200 shows a lower suction at the same degree of saturation; on the other hand, a higher MBV/PI/P200 presents a higher suction. Therefore, the moisture-holding capacity of cohesive soils increases with increasing MBV, PI, and P200. Finally, the proposed estimation method was validated by a comparison between the four determined fitting parameters from MBV and the pressure plate test.http://dx.doi.org/10.1155/2018/9213674 |
| spellingShingle | Junhui Zhang Junhui Peng Yejuan Chen Jue Li Feng Li Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue Value Advances in Civil Engineering |
| title | Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue Value |
| title_full | Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue Value |
| title_fullStr | Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue Value |
| title_full_unstemmed | Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue Value |
| title_short | Estimation of Soil-Water Characteristic Curve for Cohesive Soils with Methylene Blue Value |
| title_sort | estimation of soil water characteristic curve for cohesive soils with methylene blue value |
| url | http://dx.doi.org/10.1155/2018/9213674 |
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