The Study about Reduction of Frost-heaving in Railway Small Structures

철도 소형구조물에서의 동상저감방안 연구

  • 한창용 (서울과학기술대학교 철도전문대학원 철도건설공학과) ;
  • 이준석 (한국철도기술연구원, 선임연구부) ;
  • 조국환 (서울과학기술대학교 철도전문대학원 철도건설공학과)
  • Published : 2011.10.20

Abstract

Recently, In Korea region becoming subtropical climate, freezing index values have been increasing in winter. The climate condition in Korean became polarized. Since freezing index is increased recently, track heaving from frost is often occurred, which is ignored in past couple of years. Methods to prevent frost-heaving are circumfusion of calcium chloride and replacement of gravel ballast in usual. The effects of those methods are minimal, incontinuous, and not eco-friendly. Therefore, maintenances are performed repeatedly every year. This study discussed utilizing the waste-tire-chips and insulators in the small structures(bridge and box etc) for prevention of frost-heaving. In order to prove effect of waste-tire-chips, laboratory and field tests were conducted with CBR and measurement of frost-heaving amount to prove and verify effect of insulators.

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