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

The Korean Institute of Building Construction (한국건축시공학회)
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A Study on the Estimation of Setting Time for High Strength Concrete Using Durometer

개량형 Durometer를 이용한 고강도 콘크리트의 응결시간 추정 가능성 분석

  • 신세준 (청주대학교 건축공학과) ;
  • 한수환 (청주대학교 건축공학과) ;
  • 현승용 (청주대학교 건축공학과) ;
  • 김종 (청주대학교 건축공학과) ;
  • 한민철 (청주대학교 건축공학과) ;
  • 한천구 (청주대학교 건축공학과)
  • Published : 2020.11.12
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Abstract

The purpose of this study is to explore the possibility of estimating optimum surface finish time of the fresh concrete placed at the job site by applying a surface hardness test meter(Durometer). Tests are carried out by measuring and comparing the Penetration resistance test and hardness test by Durometer. Penetration resistance tester and improved Durometer are similar, but the higher the temperature, the higher the setting time, and the higher the correlation was shown. When the hardness value of the improved Durometer is about 50 HD, it is found that the initial and 80 HD represent the end. It is expected that this will be useful in determining the finish time of the surface at the actual site.

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Acknowledgement

본 연구는 한국연구재단(과제번호 : NRF-2019R1I1A3A01062396)의 일환으로 수행된 연구임을 밝히며 이에 감사를 드립니다.