Grouting Properties using Thixotropic Material and Vibration Impact Method

Keeseok Kim; Haseog Kim; Bong-hyun Baek; Simhun Yuk

doi:10.7844/kirr.2024.33.1.37

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2024 Vol.33, Issue 1 Preview Page Next Page

Grouting Properties using Thixotropic Material and Vibration Impact Method 가소성 그라우트 재료와 진동 및 충격을 부여하는 공법에 의한 지반개량 특성

28 February 2024. pp. 37-47

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Abstract

In grouting, the LW method is commonly employed to induce the gelation of cementitious material using water glass, thereby restricting the extent of material injection. Nevertheless, challenges manifest when materials are lost before gelation, particularly in regions with high groundwater flow rates or significant subsurface voids. This study developed a thixotropic grout material using LFS and GGBFS to mitigate material loss during injection, with an assessment of its flow characteristics, durability in marine exposure, strength, and injection properties. The outcomes revealed that the thixotropic grout material exhibited flow ranging from 105 to 143 mm and enhanced strength and durability compared to the LW method. Furthermore, field tests substantiated that applying vibration and impact improved impermeability.

Keywords

grout

thixotropic

gel

ladle furnace slag

blast furnace slag

그라우팅 공사에서 재료의 주입범위를 제한하기 위해 사용되는 대표적인 공법은 약액을 사용하여 시멘트계 재료의 겔화를 유도하는 LW법(Labiles waterglass method)으로 이는 다양한 환경에서 사용되고 있으나 지하수의 유속이 빠르거나 지반 내 공극이 큰 경우 겔이 되기 전 재료가 유실되는 문제가 발생한다. 본 연구에서는 주입 시 유실을 최소화 하기 위하여 전기로환원슬래그 및 고로슬래그를 활용하여 가소성 그라우트재료를 제조하였으며 유동성, 강도특성, 해수 침지에 의한 내구성 및 주입성능을 검토하였다. 실험 결과, 가소성 그라우트 재료는 배합에 따라 105~143mm의 유동성을 가지며, LW법 대비 강도 및 내구성이 향상된 결과를 확인하였다. 또한 진동 및 충격을 부여하는 공법을 함께 적용하여 일반공법 대비 차수효과가 개선됨을 확인하였다.

키워드

그라우트

가소성

겔

제강환원슬래그

고로슬래그

References

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 33
No :1
Pages :37-47
Received Date : 2023-12-19
Revised Date : 2024-01-09; 2024-01-22
Accepted Date : 2024-01-22
DOI :https://doi.org/10.7844/kirr.2024.33.1.37

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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