Experimental Study on Micro Deformation Characteristics of Remolded Saturated Cohesive Soil at Different Loading Rates

ZHENG Juan; WU Xiao; LAI Xiuying; CHEN Shuo

doi:10.13204/j.gyjzG21021603

Volume 52 Issue 4

Jul. 2022

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ZHENG Juan, WU Xiao, LAI Xiuying, CHEN Shuo. Experimental Study on Micro Deformation Characteristics of Remolded Saturated Cohesive Soil at Different Loading Rates[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(4): 122-125,73. doi: 10.13204/j.gyjzG21021603

Citation:

ZHENG Juan, WU Xiao, LAI Xiuying, CHEN Shuo. Experimental Study on Micro Deformation Characteristics of Remolded Saturated Cohesive Soil at Different Loading Rates[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(4): 122-125,73. doi: 10.13204/j.gyjzG21021603

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Experimental Study on Micro Deformation Characteristics of Remolded Saturated Cohesive Soil at Different Loading Rates

doi: 10.13204/j.gyjzG21021603

1. College of Civil Engineering, Putian University, Putian 351100, China;
2. Taizhou Traffic Survey and Design Institute, Taizhou 318000, China;
3. Kaihui Group (Fujian) Co., Ltd., Putian 351100, China

Received Date: 2021-02-16
Available Online: 2022-07-25

Abstract

Abstract

The remolded saturated cohesive soil with the same initial state was consolidated at different loading rates, and the specimens were measured by nuclear magnetic resonance (NMR) in different loading stages. And then the relation of transverse relaxation time T₂ distribution or T₂ spectrum area change with porosity was qualitatively analyzed to study its microscopic response of deformation.The results showed that the T₂ spectrum of saturated remolded cohesive soil in the initial stage of consolidation was consisted of two peaks. With the development of consolidation, the large pores gradually closed to small pores, and the final T₂ spectrum turned out to be a single peak; for faster loading soil specimens influenced by lagging of drainage at the beginning of loading,the change trend of the T₂ spectrum was not obvious.And after a long time of constant loading, the final shape for the T₂ spectrum of the soil specimens was very similar regardless of the loading rate.It indicated that the loading rate only influenced the intermediate state of the soil specimens, the final state was dominated by the initial state of the specimens.
- loading rate,
- remolded saturated cohesive soil,
- microscopic response,
- nuclear magnetic resonance,
- transverse relaxation time

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References(13)

References

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