Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2005.03a
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- Pages.1283-1290
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- 2005
Development and Characteristics of Thixotropic Grout based on Colloidal Silica
실리카 콜로이드를 이용한 가소성 그라우트의 개발 및 공학적 특성
- Ryu, Dong-Sung (Newtech Construction Chemical Co., LTD.) ;
- Jeong, Gyeong-Hwan (Dong-A Geological Engineering Co.,LTD.) ;
- Shin, Min-Sik (Dong-A Geological Eng. Co.,LTD.) ;
- Kim, Dong-Hae (Dong-A Geological Eng. Co.,LTD.) ;
- Lee, Jun-Seok (Newtech Construction Chemical Co., LTD.) ;
- Jung, Du-Hwoe (Dept. of Civil Eng., Pukyong National University)
- 류동성 (뉴텍건설화학(주) 기술연구소) ;
- 정경환 ((주)동아지질) ;
- 신민식 ((주)동아지질 설계부) ;
- 김동해 ((주)동아지질 설계부) ;
- 이준석 (뉴텍건설화학(주) 기술연구소) ;
- 정두회 (부경대학교)
- Published : 2005.03.25
Abstract
A thixotropic grout has been newly developed for the use of back-filling a tail void in the shield tunnel and filling up ground voids. The grout developed in the study is a mixture of colloidal silica, cement and some functional additives. Its engineering characteristics was investigated by measuring a viscosity and unconfined compressive strengths. The optimum mixing proportion for an effective thixotropic grout was proposed through several repeated laboratory tests. The various physical properties such as thixotropy, unconfined compressive strengths, and durability of the thixotropic grout and the gels produced from the grout were compared with those of the well-known waterglass grout such as L.W.. The thixotropic grout developed in the study exhibited an excellent performance for back-filling of tail voids, based on experimental results compared to the existing waterglass grout.
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