Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Characteristics of the Visco-elastic Grout Material in Fresh and Sea Water

해수와 담수에서 점탄성을 갖는 그라우트재의 공학적 특성 평가

  • 김욱기 (한국건설기술연구원 Geo인프라연구실) ;
  • 조삼덕 (한국건설기술연구원 Geo인프라연구실) ;
  • 박봉근 ((주)백경지앤씨) ;
  • 송병덕 (국토해양부 생태경관팀) ;
  • 김주형 (한국건설기술연구원 Geo인프라연구실)
  • Published : 2012.06.01
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Abstract

In general, it is critical that grout consistency permit the complete filling of void space without segregation of ingredients. Recently, the antiwashout agent is used on underwater grout materials for preventing the grout from the segregation in water. This study introduces a new type of antiwashout underwater and flowable grout material using viscous modifiers and its characteristics comparing with conventional grout materials in fresh and sea water. It is found that the antiwashout underwater grout both in fresh and sea water has enough strength and good resistance to segregation.

일반적인 그라우팅 재료는 물속에서 재료 분리가 발생하여 수중 그라우팅 작업시 시공 품질 확보가 매우 어렵다. 최근에는 다양한 혼화제를 첨가하여 수중에서 재료분리가 발생하지 않는 수중 불분리성의 그라우팅 재료들이 개발되고 있다. 본 연구에서는 계면활성제계 개질제를 이용하여 수중에서 재료분리가 발생하지 않으면서도 유동성을 충분히 갖는 점탄성 그라우트재를 개발하고 실내시험을 통해 해수 및 담수에 수중 불분리성 그라우팅 재료와 일반 그라우팅 재료를 시공하였을 때의 공학적 특성을 분석하였다. 본 연구에서 개발한 수중 불분리성 그라우팅 재료는 일반 그라우트재와 비교하여 해수와 담수 상태에서 충분한 강도가 발휘되었으며 수중에서 재료 분리가 발생하지 않아 수중에서도 좋은 시공 품질을 확보할 수 있을 것으로 평가되었다.

Keywords

References

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