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Volume 45 Issue 11
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GU Yingdong, CHENG Qing, TANG Chaosheng, SHI Bin. Desiccation cracking behavior of vegetated soil with various dry densities[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(11): 2420-2428. DOI: 10.11779/CJGE20221037
Citation: GU Yingdong, CHENG Qing, TANG Chaosheng, SHI Bin. Desiccation cracking behavior of vegetated soil with various dry densities[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(11): 2420-2428. DOI: 10.11779/CJGE20221037
shu

Desiccation cracking behavior of vegetated soil with various dry densities

  • School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China

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  • Received Date: August 21, 2022
  • Available Online: November 05, 2023
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    • Abstract
  • Desiccation cracking in vegetated slopes is a common phenomenon. In order to investigate the desiccation cracking characteristics of a vegetated soil, a series of desiccation tests are carried out in this study. The vegetated and bare soil groups with four different dry densities (1.3, 1.4, 1.5, 1.6 g/cm3) are selected. The weight of each soil sample is regularly measured, and the development of surface cracks is monitored. A self-developed system CIAS is adopted to quantitatively analyze the surface crack pattern during the drying process. The experimental results show that: (1) The evapotranspiration rate of the vegetation soil decreases with the increase in the dry density. (2) Compared with the bare soil, the vegetated soil sample has a slower water loss rate and a smaller critical water content under a certain dry density. (3) The dry density has a significant influence on the desiccation cracking behavior of vegetated soils. The larger the dry density, the larger the water content corresponding to the formation of the crack network pattern. (4) With a given dry density, the vegetated soil has a smaller surface crack ratio and an average crack width, but a larger crack density compared with the bare soil.
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    • References (23)
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