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http://dx.doi.org/10.3741/JKWRA.2002.35.5.475

Settling Characteristics of Saemankeum fine-Cohesiv Sediments : Effects of Physico-Chemical Properties  

Hwang, Gyu-Nam (전북대학교 토목환경공학부, 공학연구원 공업기술연구센터)
Jo, Yong-Sik (한양대학교 공과대학 토몽공학과)
Publication Information
Journal of Korea Water Resources Association / v.35, no.5, 2002 , pp. 475-484 More about this Journal
Abstract
A series of settling tests and physico-chemical property tests on Saemankeum fine-cohesive sediments has been conducted in order to investigate the correlation between settling properties and their physico-chemical properties which are represented as grain size distribution, mineralogical composition, and percentage of organic contents. Experimental results of physico-chemical property tests show that Saemankeum sediments are relatively large in average grain size(52${\mu}{\textrm}{m}$), and contain very small organic materials(2%), and are dominantly composed of Quarts in mineralogical aspect which has relatively low cohesion. Thus, Saemankeum sediments might be specified as the sediments whose settling properties are more influenced by the gravity than the cohesion. This characteristics of Saemankeum sediments are found to lead to relatively small settling velocity in flocculated settling region in which increasing cohesion results in increasing settling velocity, while relatively large settling velocity in hindered settling region in which settling velocity decreases with increasing cohesion.
Keywords
fine-cohesive sediment; settling properties; physico-chemical; properties; Saemankeum;
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