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A Study on the Possibility of Using Concrete Blocks with Ready Mixed Concrete Sludge

레미콘 슬러지를 활용한 콘크리트블록 활용에 대한 기초 연구

Jung, Jae-Ho
정재호

  • Received : 2019.04.08
  • Accepted : 2019.06.20
  • Published : 2019.08.20

Abstract

Sludge generated in the production of ready-mixed concrete is classified as waste and processed at a high cost. In particular, small and medium-sized ready-mix manufacturer are burdened with such costs, and some companies are illegally processing them. Therefore, the purpose of this study is to suggest a method for recycled remicon sludge as a concrete block composition. When the remicon sludge is simply dried, the residual chemical admixture and ettringitee contained in the sludge are present, so that the compressive strength of the concrete block and the compressive strength after freezing and thawing are largely deteriorated to meet the quality standards of the concrete shore and retaining wall block It was not possible to do. As a method for satisfying the physical performance, it was found that the remicon sludge was calcined at a high temperature of about $900^{\circ}C$. to decompose ettringite and residual chemical admixture and then used it.

Keywords

ready mixed concrete;sludge;concrete block;recycling