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http://dx.doi.org/10.7844/kirr.2020.29.1.43

Field Applicability and Manufacturing of Foam Concrete as Filler with the Low-strength and High-flow for Repair System of Ground Subsidence  

Ma, Young (Jaeins Foundation Construction Co., LTD.)
Kim, Beom-Seok (Jaeins Foundation Construction Co., LTD.)
Woo, Yang-Yi (Research Center, AZ Co., Ltd.)
Jung, Kyung-Hun (Jaeins Foundation Construction Co., LTD.)
Song, Hun-Young (Dongbu Engineering)
Publication Information
Resources Recycling / v.29, no.1, 2020 , pp. 43-52 More about this Journal
Abstract
The objectives of this study were to identify the optimal mix of foam concrete with the low-strength and high-flow for the repairing ground subsidence situation emergently by utilizing a large amount of industrial by-products and evaluate the possibility by applying it to the site. The factors of the experiment were the mixing ratio of mixing water and a foaming agent and the mixing ratio of foam over paste volume. The optimal mix identified by the experiment was applied to the field and basic properties were evaluated. The results of the experiment showed that the optimal mixing ratio of mixing water and the foaming agent was 10%. Moreover, when the mixing ratio of pre-foam over paste volume was 170%, it satisfied the target. However, to ensure stable quality when applying to the field, the foam mixing ratio was set 140% for the field application. The field application test of foam concrete with the low-strength and high-flow using an eco-friendly binder satisfied all target performances. Therefore, the possibility of using it as a mixture and construction method for a ground repair system is confirmed. However, there was a quality deviation between the upper part and the lower part due to the separation between foam and paste. Consequently, further studies are needed to improve it.
Keywords
sinkhole; foam concrete; permeability coefficient; CLSM; CFBC ash;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Korea Institute of Geoscience and Mineral Resources, Research Reports, 2014 : Cause Investigation and Policy Suggestion Study by Sinkhole Type.
2 Hyunsu, Cho, 2013 : A development of CLSM with coal ash for conduit backfills, Hanyang university ph. D. thesis
3 Hyejin, Lee, 2012 : Compressive strength characteristics of lightweight foamed controlled low strength material (CLSM) using coal ash, Hanyang Master's thesis
4 Yang-yi, Woo, Keun-bae, Park, 2019 : Study on optimum mixture of industrial by-products for lightweight foamed filler production by mixture experimental design, Journal of the Korean Recycled Construction Resources Institute, 7(1), pp.37-43.   DOI
5 Jongtak, Park, Hongseob, Oh, 2018 : A study on the pozzolan reactivity and mechanical characteristic of blended portland cements using CFBC fly ash, J Rec Const Resources, 6(3), pp.207-213.
6 Jiyong, Jeong, 2011 : Properties of foamed concrete according to using methods and types of foaming agent. Kongju National University PhD thesis.
7 Choel, Kongl, 2010 : Development of autoclaved light-weight foamed concrete using bottom ash and waste concrete powder, Kongju National University PhD thesis.
8 Jinman, Kim, Eungu, Kwak, Sunghyun, Cho, et al., 2009 : Decision of optimized mix design for lightweight foamed concrete using bottom ash by statistical procedure, Journal of the korea concrete institute, 21(1), pp.3-11.   DOI
9 Hayashido, Yasushi, Shinohara, Masaki, Yoshitake, Hideki, 2013 : Development of Filler for Underground Cavities "SMART GROUT" Using Granulated Blast Furnace Slag, JFE Research journal 31, p.58
10 Jeong-Ryol, Shin, Jae-Im, Park, An-Ho, Lee, et al., 2015 : Characteristics of light weight mixed soil using eco-friendly solidification material, Autumn Conference of the Korean society of railway
11 Yong-Sun, Ryu, Jin-Gyu, Han, Woo-Ri, Chae, et al., 2016 : Development of rapid hardening backfill material for reducing ground subsidence, J. Korean Geosynthetics Society, 14(3), pp.13-20.   DOI