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2020 Vol.22, Issue 5

Research Paper

Evaluation of field applicability for grouting method using self-healing grout material

자기치유 물질을 이용한 그라우팅공법의 현장적용성 평가

Yong-Sung Choi1
Byoung-Il Kim2
Wan-Kyu Yoo3*
Jae-Dug Lee1
Yong-Ki Choi4
최 용성1
김 병일2
유 완규3*
이 재덕1
최 용기4
1Director, SSC Industry Co., Ltd.
2Professor, Dept. of Civil and Environmental Engineering, Myongji University
3Senior Researcher, Future Infrastructure Research Center, Dept. of Infrastructure Safety Research, KICT
4President, Daewon Soil Co., Ltd.
1비회원, SSC산업(주) 이사
2비회원, 명지대학교 토목환경공학과 교수
3정회원, 한국건설기술연구원 인프라안전연구본부 차세대 인프라연구센터 수석연구원
4정회원, 대원토질 주식회사 대표
* Corresponding Author
September 2020. pp. 485-500
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Abstract

소규모 설비, 시공 용이성 등 다양한 장점으로 인하여 국내의 건설현장에서 광범위하게 사용되고 있는 그라우팅 관련 기술은 과거에 비해서 비약적으로 발전되었지만 품질의 균질성, 장기 내구성 및 환경공해 등의 문제점에 대한 개선 노력은 현재까지도 지속되고 있다. 최근 국내에서는 물유리계 그라우팅 재료가 갖는 낮은 강도와 내구성, 용탈현상 발생 등의 문제점을 개선하기 위하여 자기치유 물질을 이용한 그라우팅공법이 개발되었다. 자기치유 물질을 이용한 그라우팅공법은 주입재가 지반 내 물과 반응하여 생성한 결정 성장형 자기치유 물질에 의해서 주입재와 지반이 일체화되기 때문에 지반의 내구성 및 차수성 향상, 용탈방지 및 친환경성 등을 기대할 수 있는 것으로 알려져 있다. 본 연구에서는 △△터널 및 주변지반을 대상으로 자기치유 물질을 이용한 그라우팅공법의 예비시험 및 현장적용(표준관입시험, 현장투수시험, 공내전단시험, 공내재하시험, 지시약반응시험 등)을 실시하였고 시공 전 ‧ 후에 대한 실규모 시공조건에서의 주입범위, 차수 및 지반개량 효과 등을 비교, 분석하였다. 예비시험 및 현장적용 결과를 바탕으로 자기치유 물질을 이용한 그라우팅공법의 현장적용성 및 개량효과는 양호한 것으로 파악되었다.

키워드
그라우팅
자기치유
예비시험
현장적용성
개량효과

Due to various advantages such as small facilities, ease of construction and so on, the grouting technology which is widely used in construction field has developed remarkably compared with the past. However, the efforts to improve the homogeneity of quality, long-term durability and environmental problems have been continued. In recent years, new grouting method has been developed in order to solve problems such as low strength, durability and leaching phenomenon of liquid glass (sodium silicate) grouting material in Korea. A newly developed method integrates the injection material with the ground by the self-healing material of crystallization growth type. For this reason, it is known that improvement of the durability and water quality of the ground, prevention of leaching, and environment friendliness can be expected. The present study applied a newly developed method to test sites and verified its effect such as injection range, improvement effect, waterproofing performance and so on. Standard penetration test, field permeability test, borehole shear test, pressuremeter test and pH test were conducted, and the results were compared between before and after developed method application. As results of tests, the field applicability and improvement effect of developed method were proved to be excellent.

Keywords
Grouting
Self-healing
Pilot test
Field applicability
Improvement effect
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Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 22
  • No :5
  • Pages :485-500
  • Received Date :2018. 10. 17
  • Revised Date :2020. 09. 02
  • Accepted Date : 2020. 09. 02
  • DOI :https://doi.org/10.9711/KTAJ.2020.22.5.485
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