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http://dx.doi.org/10.12814/jkgss.2017.16.2.131

A Study on Expansion and Strength Characteristics of Material for Emergency Restoration in Ground Cavity  

Han, Jin-Gyu (Chemius Korea Co., Ltd.)
Ryu, Yong-Sun (Chemius Korea Co., Ltd.)
Kim, Dongwook (Department of Civil and Environmental Engineering Incheon National University)
Park, Jeong-Jun (Incheon Disaster Prevention Research Center, Incheon Natl. Univ.)
Hong, Gigwon (Institute of Technology Research and Development, Korea Engineering & Construction)
Publication Information
Journal of the Korean Geosynthetics Society / v.16, no.2, 2017 , pp. 131-138 More about this Journal
Abstract
In this study, the expansion and compressive strength tests of emergency restoration material were carried out to restore cavity causing ground subsidence. The expansion and compressive strength characteristics according to component ratio of main material - hardener and mix proportion of blowing agent - accelerator were analyzed based on the test results. As a result of the relationship of curing time - expansion ratio analyses, it confirmed that expansion ratio decreased with reduced curing time regardless of mix proportion of blowing agent - accelerator in main material, if component ratio of hardener increased. This means that component ratio of the main material - hardener had greatly affected the expansion ratio. The compressive strength characteristics of emergency restoration material confirmed that strength was affected by mix proportion of blowing agent - accelerator. Therefore, it is necessary to apply reasonable component ratio and mix proportion to consider the required injection time, expansion ratio and strength of restoration material, when emergency restoration in ground cavity is required.
Keywords
Ground cavity; Emergency restoration; Expansion material; Compressive strength;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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