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http://dx.doi.org/10.7843/kgs.2010.26.4.37

Effects of Capillary Force on Salt Cementation Phenomenon  

Truong, Q. Hung (School of Civil, Environmental and Architectural Engrg., Korea Univ.)
Byun, Yong-Hoon (School of Civil, Environmental and Architectural Engrg., Korea Univ.)
Eom, Yong-Hun (Department of Tunnel Engrg., Dongmyeong Engrg. Consultant & Architecture)
Lee, Jong-Sub (School of Civil, Environmental and Architectural Engrg., Korea Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.26, no.4, 2010 , pp. 37-45 More about this Journal
Abstract
Salt cementation, a typical naturally-cemented phenomenon, may occur due to water evaporation under the change of climate. Capillary force may influence the distribution of cement in granular soils. This study addresses the effect of capillary force on salt cementation using five different techniques: cone penetration test, electrical conductivity measurement, photographic imaging technique, nondestructive imaging technique, and process monitoring by elastic wave. Glass beads modeling a particulate media was mixed with salt water and then dried in an oven to create the cementation condition. Experimental results show that salt cementation highly concentrates at the top of the small particle size specimens and at the middle or the bottom of the large particle specimens. The predicted capillary heights are similar to the locations of high salt concentration in the cemented specimens. Five suggested methods show that the behavior of salt-cemented granular media heavily depends on the capillary force.
Keywords
Capillary; Conductivity; Cone tip resistance; Compressional wave; Salt cementation; Shear wave; Unsaturated soil;
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