International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
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Fundamental Properties of Limestone Powder Added Cement Environment-friendly Concrete for Concrete Pavement

석회석미분말을 함유한 친환경 시멘트콘크리트의 도로포장 적용을 위한 기초 연구

  • 최우현 (강원대학교 대학원 토목건설공학과) ;
  • 박철우 (강원대학교 공과대학 토목공학과) ;
  • 정원경 ((주)삼우아이엠씨 기술연구소) ;
  • 김기헌 ((주)삼우아이엠씨)
  • Received : 2012.03.19
  • Accepted : 2012.05.17
  • Published : 2012.08.15
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Abstract

PURPOSES : This study is to investigate the fundamental properties of limestone added cement concrete for application of pavement. METHODS : As the production of Portland cement causes environmental problems, engineers have sought more environment-friendly concrete construction materials. Limestone powder can be used for concrete as a partial replacement of Portland cement. One of the great applications of limestone powder added cement concrete might be a cement concrete pavement since the concrete pavement consumes massive quantity of Portland cement. Experimental variables were different replacement level of limestone powder by 0% to 25% with 5% increment. Before hardening of fresh concrete, setting time and plastic shrinkage characteristics were investigated in addition to other basic properties. Properties of hardened concrete included compressive, tensile and flexural strength as well as drying shrinkage. RESULTS : The addition of limestone powder did not significantly affect the properties of fresh concrete. Strength deceased as the replacement ratio increased and when the replacement ratio was greater than 10% decrease rate increased. CONCLUSIONS : It was found that the partial replacement of the limestone powder to cement in pavement materials can be positively considered as its mechanical properties show comparable performance to those normal concrete.

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References

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