Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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A Fundamental Study on the Development of Soil Stabilization Materials for Soil Mixing Method using Vietnam Fly Ash and Blast Furnace Slag

베트남 플라이애시 및 고로슬래그를 활용한 지반혼합공법용 지반안정재 개발을 위한 기초연구

  • Received : 2022.12.12
  • Accepted : 2022.12.23
  • Published : 2022.12.30
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Abstract

It has been reported that current amount of coal ash remains almost 100 million tons and 5.85 million tons of blast furnace slag are generated annually in Vietnam. Vietnam government has encouraged the industries to increase the use of coal ash and blast furnace slag as construction materials as well as in cement production institutionally. However, limited can be applied in the construction field yet. Therefore, in this study, basic performance analysis on five different kinds of fly ash from Vietnam was conducted. In addition, the performances of blast furnace slags generated in Vietnam and Korea were compared and evaluated. Soil stabilizer compressive strength test and solidified soil unconfined compressive strength test were conducted as the basic data for the development of soil stabilizer applied to the soil mixing method using fly ash and blast furnace slag generated in Vietnam. The results showed that the Vietnamese fly ash and blast furnace slag can be used as the raw materials for soil stabilization and improvement.

베트남에서 대량 발생하는 플라이애시는 누적 매립량이 약 1억톤에 이르고, 약 1억톤 정도이며, 고로슬래그 역시 약 585만톤 정도 발생하는 것으로 보고되고 있다. 이에 따라 최근 베트남에서도 플라이애시 및 고로슬래그를 재활용하기 위해 제도적으로 대응하고 있으나 아직 활발히 현장에 적용되지 못하고 있다. 이에 본 연구에서는 베트남 발생 플라이애시 5종에 대하여 기본 성능분석을 실시하였고, 베트남 발생 고로슬래그와 국내 발생 고로슬래그의 성능을 비교 평가하였다. 플라이애시와 고로슬래 그를 활용하여 지반안정재 압축강도시험, 지반혼합 고화토 일축압축강도 시험을 수행한 결과, 베트남 발생 플라이애시 및 고로슬래그를 지반안정재의 원료로 활용이 가능한 것을 확인하였다.

Keywords

Acknowledgement

Research for this paper was carried out under the KICT Research Program (project no. 20220342-001, Development of non-sintered soil stabilization material using CFBC fly ash & soil improvement method in Vietnam) funded by the Ministry of Science and ICT.

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