Study on the Properties of Dam Concrete Using Low Heat Portland Cement

저열 포틀랜드 시멘트를 사용한 댐 콘크리트의 특성에 관한 연구

  • 손영준 (쌍용양회공업(주) 기술연구소 콘크리트연구실) ;
  • 하재담 (쌍용양회공업(주) 기술연구소 콘크리트연구실) ;
  • 엄태선 (쌍용양회공업(주) 기술연구소 콘크리트연구실) ;
  • 이종열 (쌍용양회공업(주) 기술연구소) ;
  • 김태홍 (쌍용양회공업(주) 특수시멘트팀)
  • Published : 2006.05.11

Abstract

In order to control the temperature crack of massive dam concrete, the selection of appropriate materials like binder, aggregates etc., is essential. To select the optimal mix proportion, ordinary portland cement(Type I) plus 25% of fly ash and low heat portland cement(Type IV) are used as binder, and 80mm of coarse aggregates are used to reduce the amount of binder and compare the compressive strength, hydration temperature and crack index. The results of this study are as following. 1. The strength of Type IV cement is advantageous on the long-term age. 2. According to the temperature measured on mock-up$(1.5m{\times}1.5m{\times}1.5m)$, and realized the thermal analysis, the Type IV cement carried out advantageous to control the thermal crack.

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