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A Study on the Optimum Amount of Waste Foundry Sand and Flyash in Concrete

폐주물사와 플라이애쉬의 적정 사용량에 관한 연구

  • Published : 2009.02.20

Abstract

The most of waste foundry sands(WFS) have been discarded. It is very urgent for our country to make a study on recycling of WFS. The one of recycling method of WFS is using them as fine aggregate for concrete. This study provided the optimum amount of WFS and flyash when WFS and flyash were used together in concrete. The concrete made with 60% WFS fine aggregate replacement showed higher compressive strength, splitting tensile strength and modulus of elasticity than normal concrete. In the case that the flyash and WFS are replaced together, the compressive strength and splitting tensile strength were improved at flyash replacement ratio $10%{\sim}20%$ and WFS replacement ratio $40%{\sim}60%$. The increase of WFS and flyash replacement led lower air content. While the increase of WFS replacement led lower slump, the increase of flyash replacement led higher slump.

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References

  1. 문한영 외 3인, 폐주물사를 콘크리트용 잔골재로 재활용하기 위한 기초 연구, 한국콘크리트학회 봄학술발표회 논문집, pp.281-286, 2001
  2. 박제선 외 3인, 폐주물사를 혼입한 콘크리트의 적정 배합설계, 한국콘크리트학회 논문집, pp.192-205, 1997
  3. 한국자원 리싸이클링 학회, 리싸이클링 백서, 문지사, pp.157-164, 1999
  4. 최연왕 외 4인, 폐주물사를 사용한 콘크리트의 물성에 관한 연구, 한국콘크리트학회 봄학술발표회 논문집, pp.52-57, 1999
  5. Carino N.J, Maturity Functions for Concrete, RILEM International Conference on Concrete at Early-Ages, pp.123-128, 1982
  6. Naik T. R., Foundry Industry By-Products Utilization, Report No. CBU-1989-01, Center for By-Product Utilization, 1989
  7. Paul T., et. al, Properties of Controlled Low Strength Material Containing Foundry Sand, ACI Materials Journal, pp.698-702, 2000
  8. Tarun R., et. al, Application of Foundry By Product Materials in Manufacture of Concrete and Masonry Products, ACI Materials Journal, pp.41-50, 1996