Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
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Application of Waste Foundry Sand to Concrete-Based Product Having Low Water Cement Ratio

낮은 W／C비를 갖는 콘크리트 제품에 대한 폐주물사의 적용

  • 이대경 (공주대학교 대학원 건축공학과) ;
  • 김동주 (공주대학교 대학원 건축공학과) ;
  • 조홍준 ((주) 천지건업) ;
  • 김진만 (공주대학교 건축공학과)
  • Published : 2001.11.01
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Abstract

Because the WFS(Waste Foundry Sand), by-product of a casting factory, is generally a smaller particle than a fine aggregate, it has a bad influence on quality of concrete. Especially, the grading of aggregate is a very important factor in the case of concrete-based products having low water cement ratio manufactured by vibration and pressing method. Therefore, it is necessary to use WFS with the suitable grading of aggregate that it don't has a bad Influence on the quality of concrete-based products. This study investigated the suitable using proportion of WFS by means of the composition method of aggregate suggested by Driscoll. The results showed that it was desirable to use 10% of WFS since higher strength was developed with that amount.

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