Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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An Experimental Study on Thermal Property of Porous Concrete Containing Bottom Ash

바텀애시를 활용하는 다공성 콘크리트의 열전도 특성에 관한 실험 연구

  • Jeong, Seung-Tae (Department of Civil Engineering, Kunsan National University) ;
  • Kim, Bum-Soo (Department of Civil Engineering, Kunsan National University) ;
  • Park, Ji-Hun (Department of Civil Engineering, Kunsan National University) ;
  • Yang, In-Hwan (Department of Civil Engineering, Kunsan National University)
  • Received : 2021.11.16
  • Accepted : 2021.12.01
  • Published : 2021.12.30
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Abstract

In this paper, the applicability of bottom ash to insulation concrete was investigated to increase the utilization of bottom ash. Bottom ash was used as the aggregates in porous concrete and extensive experiments were conducted to investigate the characteristics of porous concrete using two types of bottom ash aggregates. The water-binder ratios of 0.25 and 0.35 were chosen and concrete specimens was produced with the compaction of 0.5, 1.5, and 3.0MPa to analyze the material properties at different compaction conditions. After concrete specimens were cured for 28 days at water tanks, unit weight, total void ratio, and thermal conductivity were measured. Based on the measured experimental results, the relationships between the unit weight, total void ratio, and thermal conductivity of porous concrete containing bottom ash was presented.

본 논문에서는 화력발전소 산업부산물이 바텀애시의 활용성을 증대시키기 위해 다공성 콘크리트를 제작하여 단열 콘크리트로서의 적용 가능성을 연구하였다. 본 연구에서는 두 가지 입도의 골재를 사용하여 골재 특성을 파악한 후, 바텀애시를 다공성 콘크리트 골재로 활용하였다. 물-바인더 비를 0.25와 0.35로 사용하고, 컴펙션에 따른 다공성 콘크리트의 재료 특성을 파악하기 위해 0.5MPa, 1.5MPa, 3.0MPa로 콘크리트 시편을 제작하였다. 이후 28일의 수중양생을 진행한 후, 단위중량, 총 공극률 및 열전도율 실험을 수행하여 결과를 도출하였다. 측정된 실험 결과를 토대로 다공성 및 경량 특성을 갖는 바텀애시를 활용한 다공성 콘크리트의 단위중량, 총 공극률 및 열전도율과의 상관관계를 제시하였다.

Keywords

Acknowledgement

본 연구는 국토교통기술촉진연구사업의 지원을 받아 연구되었습니다(21CTAP-C164197-01).

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