Dynamic evolution of three-dimensional cracks in expansive soil under wet-dry cycles: insights from resistivity monitoring

Dai, Zhangjun; Guo, Jianhua; Zhong, Kun; Tong, Kaiwen; Li, Shichang; Huang, Kang; Chen, Shanxiong

doi:10.1007/s10064-024-03812-9

Bull Eng Geol Environ

2024

DOI: 10.1007/s10064-024-03812-9

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Dynamic evolution of three-dimensional cracks in expansive soil under wet-dry cycles: insights from resistivity monitoring

Zhangjun Dai,

Jianhua Guo,

Kun Zhong

et al.

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Development Characteristics and Mechanism of Crack in Expansive Soil under Wet–Dry Cycling

Zhao,

Zhang,

Wang

et al. 2024

Applied Sciences

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Investigating crack evolution characteristics in expansive soil under dry–wet cycle conditions is essential for analyzing the shallow instability of embankments and roadbeds filled with this type of soil. Indoor tests on remolded expansive soil specimens were performed under dry–wet cycle conditions, and digital image processing technology (PCAS) was used to quantitatively analyze the process of crack evolution. The study examined how initial moisture content, compaction degree, thickness, and expansibility affect crack development in expansive soil. Additionally, the study discussed the mechanism of crack evolution, considering the characteristics of crack structures in expansive soil. The findings suggest that crack development in expansive soil specimens is influenced by various factors including initial moisture content, compaction degree, thickness, and expansibility. The crack ratio increases with the initial moisture content, thickness, and expansibility, but decreases with the compaction degree. Furthermore, a significant linear relationship exists between the attenuation rate of soil strength and the crack ratio. The development of cracks is governed by the variance in soil shrinkage, which leads to the formation of distinct shrinkage centers at various locations and is markedly influenced by the soil’s thickness. This research explores the laws governing the evolution of cracks in expansive soils, elucidating the mechanisms by which these cracks evolve under the influence of various factors. It addresses a significant gap in the theoretical understanding of crack evolution in expansive soils under conditions of multiple influences, thereby offering crucial insights into the characteristics of soil evolution.

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Development Characteristics and Mechanism of Crack in Expansive Soil under Wet–Dry Cycling

Zhao,

Zhang,

Wang

et al. 2024

Applied Sciences

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Dynamic evolution of three-dimensional cracks in expansive soil under wet-dry cycles: insights from resistivity monitoring

Cited by 1 publication

References 59 publications

Development Characteristics and Mechanism of Crack in Expansive Soil under Wet–Dry Cycling

Development Characteristics and Mechanism of Crack in Expansive Soil under Wet–Dry Cycling

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