Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)

The Korean Institute of Building Construction (한국건축시공학회)
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Chemical Stability through CO2 Curing of Cement Paste Exposed to High Temperature

고온 환경에 노출된 시멘트 페이스트의 DCG 양생을 통한 화학적 안정화

  • 김민혁 (한국교통대학교 건축공학과) ;
  • 조현서 (한국교통대학교 건축공학과) ;
  • 이건철 (한국교통대학교 건축학부)
  • Published : 2019.11.01
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Abstract

In order to examine the chemical stabilization through DCG curing of cement paste exposed to high temperature environment, we produced a sample of 40% W/C cement paste and heated it for 180 minutes under the heating temperature of $800^{\circ}C$. The DCG curing time was 6, Three time conditions were divided into 12 and 18 hours. As a result of XRD analysis, Calcite ($CaCO_3$) was found in Theta 29.4, 40, and 46.5o. As the curing time increased, the peak of Calcite also increased, which is due to the increased reaction time with DCG. Therefore, Calcite produced through DCG curing seems to have stabilized chemically by filling the pores generated by heating.

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