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http://dx.doi.org/10.12814/jkgss.2021.20.2.001

Analysis of the Reinforcement Effect of Aging Reservoir Reinforced by Environmental Soil Stabilizer as Chemical Grouting Material  

Kim, Se-Min (Department of Civil Engineering, Jeonbuk National University)
Seo, Se-Gwan (Zian Company Ltd., 8th Woosuk University Headquarters Building)
Cho, Dae-sung (Zian Company Ltd., 8th Woosuk University Headquarters Building)
Publication Information
Journal of the Korean Geosynthetics Society / v.20, no.2, 2021 , pp. 1-11 More about this Journal
Abstract
In this study, a study related to laboratory and pilot test were performed to use an environmental soil stabilizer developed to induce a hardening reaction similar to that of Ordinary Portland Cement (OPC) by using industrial by-products of blast furnace slag and the combustion ash of a circulating fluidized bed boiler as the main material. For this, specimens were prepared using liquid A of sodium silicate and silica sol, and liquid B of an environmental soil stabilizer (or OPC), and laboratory tests were performed to analyze the strength and environmental characteristics. And pilot test was performed on the aging reservoir, field permeability test and electrical resistivity survey were performed in the field to analyze the applicability. As a result of the laboratory test, the homo-gel compressive strength of the chemical injection material using the environmental soil stabilizer as liquid B was about 2.88 to 3.23 times greater than that of OPC. In addition, the elution amount of most heavy metals was lower than that of OPC, and the survival rate in the fish, acute toxicity test was 100%. Therefore, when judged based on the results of the laboratory test, it was analyzed to be superior to OPC in terms of strength and environment. In the results of the pilot test in the aging reservoir, when the environmental soil stabilizer was reinforced with liquid B of the chemical injection material, the coefficient of permeability in the aging reservoir decreased to 1/50 level. In addition, as a result of the electrical resistivity survey, it was analyzed that the electrical resistivity inside the aging reservoir increased as time passed, the saturation zone disappeared, and the overall reinforcement.
Keywords
Aging reservoir; Chemical grouting material; Environmental soil stabilizer; Reinforcement effect analysis;
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