Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Study on Setting Time Measuring Methods of a Cement Accelerating Admixture

시멘트 급결제의 응결시간 측정방법에 대한 연구

  • 허권 (충청대학 실용소재과) ;
  • 최홍식 (충청대학 건축공학과) ;
  • 이시우 (충청대학 토목공학과) ;
  • 이성태 (충청대학 건축공학과) ;
  • 정이석 ((주)화진정밀화학) ;
  • 곽홍신 (충청대학 국제공인시험연구원)
  • Published : 2004.11.01
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Abstract

The setting time is very important factor affecting the quality of tunnel lining and reinforcement of sloped slope etc. Currently, however, the quality criteria of accelerating admixture to improve it is not established well. In this study, evaluation on setting time measuring methods of a cement accelerating admixture was performed. Six types of measuring methods were checked and a proper measuring method of the admixture were proposed as fellows: (1) the temperature of materials used shall be controlled exactly and (2) to evaluate the properties of it, an admixture usage of $5\%$ (ratio of cement weight) is recommended.

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