Evaluation on the Sulfate Attack Resistance of Shotcrete with Aluminate Accelerator

알루미네이트계 급결제를 사용한 숏크리트의 황산염침식 저항성 평가

  • 김성수 (대진대학교 토목공학과) ;
  • 김홍삼 (한국 도로공사) ;
  • 이규필 (한국건설기술연구원 지반연구부) ;
  • 김동규 (한국건설기술연구원 지반연구부) ;
  • 윤하영 (대진대학교 대학원 토목공학과)
  • Published : 2005.11.01

Abstract

Shotcrete have become a deterioration which is used in the underground such as groundwater and soil in sulfate ion. Sulfate attack on concrete structures in service is not widespread, and the amount of laboratory-based research seems. to be disproportionately large. In this study, immersion test using $Na_2SO_4$ solution($1,2,5\%$) was performed to evalute the resistance of shotcrete. From the results of the immersion test for 112 days of exposure. In order to understand the deterioration mechanism due to seawater attack, test using scanning electron microscopy(SEM) analysis and X-ray diffraction showed that the deterioration mechanism due to sulfate attack in shotcrete.

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