Influence of the Montmorillonite Content and Soil State on Shrinkage Characteristics of Expansive Soil

WU Junhua; KUANG Tangliang; YE Yunxue; ZHAO Guitao

doi:10.13204/j.gyjzG22011702

Volume 53 Issue 5

May 2023

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WU Junhua, KUANG Tangliang, YE Yunxue, ZHAO Guitao. Influence of the Montmorillonite Content and Soil State on Shrinkage Characteristics of Expansive Soil[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 144-149. doi: 10.13204/j.gyjzG22011702

Citation:

WU Junhua, KUANG Tangliang, YE Yunxue, ZHAO Guitao. Influence of the Montmorillonite Content and Soil State on Shrinkage Characteristics of Expansive Soil[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 144-149. doi: 10.13204/j.gyjzG22011702

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Influence of the Montmorillonite Content and Soil State on Shrinkage Characteristics of Expansive Soil

doi: 10.13204/j.gyjzG22011702

WU Junhua^1,2,3,
KUANG Tangliang¹,
YE Yunxue^{1,2,3
,
,},
ZHAO Guitao⁴

1. School of Civil Engineering and Architecture, Nanchang Hangkong University, Nanchang 330063, China;
2. Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-Rock Dam, Ministry of Water Resources, Nanjing 210024, China;
3. Jiangxi Smart Building Engineering Research Center, Nanchang 330063, China;
4. School of Civil Engineering, Wuhan University, Wuhan 430072, China

Received Date: 2022-01-17

Abstract

Abstract

To study the influence of the montmorillonite content and soil state on the shrinkage characteristics of expansive soil, shrinkage characteristic tests were conducted on specimens which reflected soil state (in the slurry state, after consolidation, and in compaction state). The test results indicated as the montmorillonite content increased, the shrinkage deformation of the slurry specimens gradually increased, and as the montmorillonite content in pre-consolidated specimens was in a certain range, the differences of shrinkage deformation between specimens were not much, as the montmorillonite content increased to a certain amount, the pre-consolidated specimens would produce obvious shrinkage deformation. For slurry specimens and pre-consolidated specimens, when the montmorillonite content exceeded a specific value, the curvature in the residual shrinkage stage of soil shrinkage characteristic curves (SSCC) would constantly decrease. Comparing with the shrinkage limit obtained from the graphic method, the calculated values was closer to the actual value. When the SSCC was a broken line, the calculated shrinkage limit equaled to the value by the graphic method. The influence of the montmorillonite content on the shrinkage characteristics of expansive soil was greater than that of the soil state.
- expansive soil,
- montmorillonite content,
- soil state,
- shrinkage characteristics,
- shrinkage limit

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References(22)

References

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