Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
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The Quality Status of Aggregate for Domestic Ready-mixed Concrete and the Effect of Aggregate Quality in Concrete

  • Kim, Yong-Ro (Technology Research & Development Institute, Daelim Industrial) ;
  • Lee, Jae-Hyun (Technology Research & Development Institute, Daelim Industrial) ;
  • Min, Choong-Siek (Technology Research & Development Institute, Sampyo) ;
  • Park, Jong-Ho (Technology Research & Development Institute, Sampyo)
  • Received : 2013.07.01
  • Accepted : 2013.11.08
  • Published : 2014.02.20
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Abstract

This research examined the effect of the quality of aggregate on concrete workability and compressive strength through an investigation into regional aggregate used in domestic ready mixed concrete plants. Through the research, it was found that aggregate for ready mixed concrete shows poor quality overall. The main factor of deterioration in the quality of the concrete is the particle size of fine aggregate and fine particle content in coarse aggregate. The quality of aggregate significantly influences concrete's workability, which is defined based on 0.08mm passage related with powder and absorption. In addition, poor aggregate quality leads to increased water content in concrete to secure workability, which is related with a decline in the compressive strength and durability of concrete.

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References

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