Study of the Thixotropy of the Zhanjiang Formation Structural Clay Using Grey Association Analysis
The thixotropy of structural soils is a description of the strength recovery after soil disturbance.To accurately distin-guish the degrees of the strength recovery of soil,a comprehensive thixotropy evaluation method is proposed.In this paper,the thixotropy of a structural clay in Zhanjiang Formation is studied.Considering the factors affecting the thixotropy of the struc-tural clay in Zhanjiang Formation,the unconfined compressive strength test was performed,and the thixotropy evaluation index system of the structural clay in Zhanjiang Formation was established based on the water content,the void ratio and the sensitiv-ity.The grey correlation analysis method was used to analyze the correlation degree between the thixotropy of the structural clay in Zhanjiang Formation and each evaluation index,and to judge the influence of each factor level on the thixotropy.The re-sults show that the high moisture content and the void ratio inhibit the correlation with the thixotropy,while the high sensitivi-ty promotes the correlation with the thixotropy.
Structural Clay of Zhanjiang FormationThixotropyGrey Association AnalysisRelevance
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