Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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Improvement of the Early Age Strength of Low Cement Concrete Using High Volume Mineral Admixture

  • Park, Jong-Ho (Technology Research & Development Institute, Sampyo) ;
  • Kim, Yong-Ro (Technology Research & Development Institute, Daelim Industrial) ;
  • Song, Young-Chan (Technology Research & Development Institute, Daelim Industrial) ;
  • Song, Dong Yub (Korea Infrastructure Safety and Technology Corporation) ;
  • Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam National University)
  • Received : 2012.05.07
  • Accepted : 2012.10.08
  • Published : 2012.12.20
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Abstract

To address the problem of global warming, consumption of cement, the main material of concrete, should be decreased. Unfortunately, when industrial by-products are used in large quantities as admixture, the early age strength of concrete will be decreased, reducing its viability for use in concrete structures. Therefore, in this study, the application of an ionization accelerator and alkaline activator as addition agent of superplasticizer were investigated to secure a similar early age strength to that of normal concrete, thus increasing the viability of low cement concrete. Through the investigation, it was found that specimens that used a combination of Alkaline-activator (Na2Sio3) and ionization accelerator (Amine) had the highest early and long-age compressive strength. From this, we can determine an appropriate range of application of superplasticizer to improve early-age compressive strength of low cement concrete.

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References

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