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Characteristics of Waste Lime and Soil Mixture for Reusing of Roadbed Embanking Material

도로노반 성토재로의 재활용을 위한 폐석회 혼합토의 특성연구

  • 홍승서 (한국건설기술연구원 지반연구실) ;
  • 김영석 (한국건설기술연구원 지반연구실) ;
  • 이용수 (한국건설기술연구원 지반연구실)
  • Received : 2010.11.16
  • Accepted : 2010.12.17
  • Published : 2010.12.31

Abstract

Currently about 3.2 millon tons of waste lime are accumulated and annually 100,000 tons are producted. This study was carried out to investigate the characteristics of soil mixed with waste lime for reusing of roadbed embanking material. Waste lime used in this study is producted as a by-product in the manufacturing process of making $Na_2CO_3$ from local chemical factory in Incheon. In this study, the feasible reuse of waste lime mixed with granite weathered soil, clay, crushed rock was investigated through laboratory tests including specific gravity test, sieve analysis, hydrometer analysis, atterberg limit test, compaction test, unconfined compressive test, CBR test, permeability test, shear test, and abrasion test. The mixing rate is granite weathered soil, clay, crushed rock 80 % respectively and waste lime 20 % by weight. From the test results, it is shown that the waste lime and soil mixtures satisfy the criteria as road embanking material specification.

Keywords

Waste lime;Soil mixture;Roadbed;Embanking material

Acknowledgement

Supported by : 한국건설기술연구원

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