Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Effect of Mineralogical Sources of Coarse Aggregate on the Engineering Properties of Ultra High Strength Concrete with 80 MPa

굵은 골재 암종 변화가 80 MPa급 초고강도 콘크리트의 공학적 특성에 미치는 영향

  • Received : 2015.03.05
  • Accepted : 2015.07.08
  • Published : 2015.07.30
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Abstract

The objective of this paper was to investigate experimentally the effect of aggregate kinds on the engineering properties of the ultra high strength concrete with 80 MPa. Granite stone(GA), low purity lime stone(RLA) and high siliceous lime stone(HSRLA) and basalt stone(BA) were used to make ultra high strength concrete incorporating silica fume and fly ash, respectively and water to binder ratio(W/B) was ranged from 15% to 30%. Test results showed that RLA, HSRLA and BA had favorable distribution of grain shape, which is higher than 58%. The use of RLA and HSRLA is achieved higher compressive strength than others due to improved elastic properties of RLA and HSRLA. More interestingly, the results of autogenous shrinkage was reduced remarkably when RLA and HSRLA were used compared with the results of GA. This is also due the formation of monocarboaluminate associated with $CaCO_3$ and $C_3A$.

Keywords

Acknowledgement

Supported by : 국토교통과학기술진흥원

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