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http://dx.doi.org/10.12814/jkgss.2021.20.4.043

Evaluation of Applicability of CMD-SOIL Recycled Resources as Ground Improvement Material for Deep Mixing Method  

Ham, Tae-Gew (Asahitechno Co. Ltd.)
Seo, Se-Gwan (Zian Company Ltd.)
Cho, Dae-Sung (Zian Company Ltd.)
Publication Information
Journal of the Korean Geosynthetics Society / v.20, no.4, 2021 , pp. 43-52 More about this Journal
Abstract
As port development in soft ground is actively promoted for international logistics and transportation, the Deep Mixing Method (DMM) is continuously applied to form an improved column body directly in the ground by mixing cement with soil to secure the stability of the structure. However, in the case of cement, there is a problem of emitting a lot of greenhouse gases during the production process, so the development and use of new alternative materials are socially required to achieve the national goal of carbon neutrality. Accordingly, in this study, CMD-SOIL, developed to induce a hardening reaction similar to cement by recycling recycled resources, was used as a ground improvement material for the DMM. In addition, it was attempted to determine the possibility of replacing cement by conducting on-site test construction and evaluating applicability. As a result of the study, the compressive strength of CMD-SOIL compared to the design reference strength was 1.46 to 2.64 times higher in the field mixing test and 1.2 to 5.03 times higher than in the confirmed boring. In addition, the ratio (λ) of the compressive strength in the field to the design reference strength was 0.63 to 1.14, which was similar to the previous research results. Therefore, in the case of CMD-SOIL, it is possible to express the compressive strength necessary to secure stability, and there is no difference in applicability compared to existing materials such as ordinary portland cement and blast furnace slag cement, so it was analyzed that it could be used as a ground improvement material for the DMM.
Keywords
Recycling resources; Deep Mixing Method(DMM); Application evaluation; Ground improvement material;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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