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

Architectural Institute of Korea (대한건축학회)
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Mechanical and Durability Properties of High Strength Concrete Using Limestone Coarse Aggregate

석회암 굵은골재를 사용한 고강도 콘크리트의 역학 및 내구특성

  • Received : 2015.03.05
  • Accepted : 2015.08.21
  • Published : 2015.08.30
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Abstract

In this research, engineering performance and durability of high strength concrete using limestone coarse aggregate were evaluated to suggest applying the waste limestone aggregate on high strength concrete through the treating processes of crushing and size distribution. As the results of a series of tests, about 5 % of workability was improved with limestone coarse aggregate while there is no significant difference on air content. As a hardened concrete properties, early age compressive strength was increased and elastic modulus was improved about 12 % when limestone coarse aggregate was used in high strength concrete. In autogenous shrinkage, the deformation amount was significantly decreased. For durability of high strength concrete using limestone coarse aggregate, generally favorable results were obtained due to the low water-to-binder ratio in freeze-thawing, carbonation, sulfate attack, and chloride penetration. From the spalling resistivity test simulating fire condition, favorable results were obtained regardless types of aggregate depending on the fiber content. Consequently, it was possible to achieve equivalent or better performance of high strength concrete using the limestone coarse aggregate.

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References

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