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Physical Characteristics of Concrete Using High-Fineness Cement and Fly Ash

고분말도 시멘트와 플라이애시를 사용한 콘크리트의 물리적 특성

Lee, Young-Do;Ha, Jung-Soo;Kim, Han-Sic
이영도;하정수;김한식

  • Received : 2019.05.27
  • Accepted : 2019.07.15
  • Published : 2019.08.20

Abstract

The cement industry is considered a major industry for reducing greenhouse gases, increasing the amount of binding materials that can replace cement in concrete is known as the most effective method for reducing carbon dioxide. Therefore, research is being carried out to utilize large quantities of by-products that can be used as alternatives to cement. However, there are problems with reduced strength at early age and retarded setting for major reasons that do not increase the amount of mixture of binders used to replace cement. Thus, in this study, normal cement and high-fineness cement were used and physical properties were reviewed by placing differences in fly ash usage depending on the type of cement. As a result, the characteristics of strength were similar, and the hydration temperature was the same level. Also, the durability test showed that the length change, carbonation resistance were better than those of normal cement. Therefore, it is confirmed that the use of high-fineness cement is effective to reduce the amount of cement used and using more by-products.

Keywords

high-fineness cement;fly ash;strength development;durability

Acknowledgement

Supported by : National Research Foundation of Korea(NRF)