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http://dx.doi.org/10.7843/kgs.2009.25.2.67

Evaluation of Cementation Effect of Sand Using CPT and DMT  

Lee, Moon-Joo (Dept. of Civil, Environmental and Architectural Engrg., Korea Univ.)
Choi, Sung-Kun (Dept. of Civil, Environmental and Architectural Engrg., Korea Univ.)
Hong, Sung-Jin (Dept. of Civil, Environmental and Architectural Engrg., Korea Univ.)
Lee, Woo-Jin (Dept. of Civil, Environmental and Architectural Engrg., Korea Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.25, no.2, 2009 , pp. 67-77 More about this Journal
Abstract
In this study, the relations of cone tip resistances (qc) and DMT indices of cemented sand are analyzed from a series of calibration chamber tests. The experimental results show that, with increasing the cementation level, three DMT indices also increase. The CPT and DMT do not appear to properly reflect the cementation effect of sand, since the penetration induces the damage of cementation. Nevertheless, the DMT is more sensitive to deformation characteristics of cemented sand than CPT. It is also observed that the $E_D/q_c$ ratio of cemented sand is larger than that of uncemented sand. However, the $K_D-q_c/{\sigma}_v relation is independant of cementation, unlike the result of previous study. In addition, this study evaluates the constrained modulus and cohesion intercept of cemented sand using the relation between cone resistance and dilatometer constrained modulus ($M_D$).
Keywords
Cementation; Cohesion intercept; Cone tip resistance; Constrained modulus; DMT indices;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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