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A Study on the Compaction Characteristics of Crushed Rock-soil Mixture for Railway Subgrade  

Kim, Dae-Sang (한국철도기술연구원)
Park, Seong-Yong (연세대학교 토목공학과)
Song, Jong-Woo (서울대학교 에너지자원공학과)
Kim, Soo-Il (연세대학교 토목공학과)
Song, Jae-Joon (서울대학교 에너지자원공학과)
Publication Information
Journal of the Korean Society for Railway / v.12, no.2, 2009 , pp. 183-189 More about this Journal
Abstract
The track structure of Gyungbu High Speed Railway line from Daegu to Busan is concrete track. It has a very strict specification for residual settlement because of its rigid type structural characteristics. The residual settlement of it comes from the residual settlement of the subgrade and the ground. The residual settlement of railway subgrade composed of crushed rock and soil might be major parts of total residual settlement depending on the field compaction qualities. Therefore, it is a key to minimize the residual settlement of the subgrade for a successful concrete track construction. In this paper, total 31 large scale compaction tests were performed to understand the compaction behaviors of the crushed rock-soil mixture. The test specimens were constituted with soil, crushed shale and mudstone taken from two sites under construction. The compaction tests were performed with the variations of rock types, #4 sieve passing contents, maximum particle size, and moisture contents. The influence of those factors on maximum dry unit weights of crushed rock-soil mixture was evaluated.
Keywords
Concrete track; residual settlement; crushed rock-soil mixture; #4 sieve passing content; compaction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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