• Title/Summary/Keyword: plastic and drying shrinkage

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A Study on the Physical Properties of Recycled Aggregates Using Concrete of Changing Waste Pottery Blain Fineness (폐도자기 분말도 변화에 따른 순환골재 사용 콘크리트의 물리적 특성에 관한 연구)

  • Ryu, Hyun-Gi;Park, Jeong-Min;Joung, Jae-Ho;Kim, Eui-Chang;Yoon, Seung-Joe
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.6 no.2
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    • pp.119-127
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    • 2011
  • Objective of this study is to identify properties on strength increase of hardened concrete and fluidization of non-hardened concrete using waste ceramics generated by construction waste, which is a type of industrial waste, and by ceramics, which is a clay plastic, during its production process, and determine length change ratio caused by drying shrinkage during substitution of recycle aggregate and waste ceramics, and whether they can be used as concrete compounds. Slump of non-hardened concrete exhibited the best fluidization and formability at recycled aggregate's replacement ratio of 60% driven by higher substitution ratio of recycled aggregate and waste ceramics while air content met the KS requirement when substitution ratio of waste ceramics was $4,000cm^2/g$. Compressive strength of hardened concrete exceeded the requirements at early age and standard age and temperature dropped by roughly $6{\sim}10^{\circ}C$ less than the standard at maximum temperature in adiabatic temperature increase, which will hopefully result in stronger durability.

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