Journal of the Korean Society for Advanced Composite Structures (복합신소재구조학회 논문집)

Korean Society for Advanced Composite Structures (한국복합신소재구조학회)
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An Experimental Study for Strength Improvement of Soft Ground using Hardening Agent and Silicate Mineral Power

수용성 고화재와 규산염광물 결합재를 활용한 지반개량재의 실험적 연구

  • Kim, Sung-Wook (GI Co. Ltd., Geo-Information Institute) ;
  • Choi, Eun-Kyeong (GI Co. Ltd., Geo-Information Institute) ;
  • Cho, Jinwoo (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Lee, JuHyung (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Lee, Kyu-Hwan (International Civil & Plant Engineering, Konyang University)
  • 김성욱 ((주)지아이) ;
  • 최은경 ((주)지아이 지반정보연구소) ;
  • 조진우 (한국건설기술연구원 지반연구소) ;
  • 이주형 (한국건설기술연구원 지반연구소) ;
  • 이규환 (건양대학교 해외건설플랜트학과)
  • Received : 2015.10.06
  • Accepted : 2015.10.30
  • Published : 2015.12.31
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Abstract

The demand for environmental consideration is on the increase in civil engineering. This study focuses on the development of technology to reduce the use of carbonate cement and improve its performance by using a silicate mineral and hardening agents, and presents the test results for the demonstrative evaluation of the properties of the raw material. Highly active feldspar was used as a binder to augment the bonding of the carbonate cement, and their change in strength was observed after test piece construction with the addition of soluble hardening agent. The uniaxial compression strength of the test piece of the general Portland cement with the addition of 0.5% soluble hardening agent, showed an increase by 33% and that of the test piece of cement with the addition of 70% substituted with feldspar increased by 28%. The strength of viscous soil; classified as soft ground, showed an increase of a maximum of 1.7 times when it was mixed with cement and solidifier depending on the curing period. These tests confirmed that a soluble solidifier is effective for improving the strength of a cement binder and that the highly active feldspar can be used as a binder.

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References

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