Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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A Study on the Properties of Cementless Artificial Stone by Recycled Coarse Aggregate and Red Mud According to Replacement Ratio

순환 굵은골재 및 레드머드 치환율에 따른 무시멘트 인조석재의 특성에 관한 연구

  • Park, Ju-Hwa (Department of Architectural Engineering, Hanbat National University) ;
  • Pyeon, Su-Jeong (Department of Architectural Engineering, Chungnam National University) ;
  • Lee, Sang-Soo (Department of Architectural Engineering, Hanbat National University)
  • Received : 2019.01.17
  • Accepted : 2019.03.20
  • Published : 2019.03.30
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Abstract

This study aims to make artificial stone by recycling blast furnace slag powder, red mud and recycled aggregate, which are known as industrial waste. Recycled aggregate is a typical construction waste, and various recycled products such as concrete block are being sold. In this study, we tried to make artificial stone mixed with waste such as recycled aggregate, and experimented with the use of artificial stone and further study. As the red mud replacement ratio increased, the absorption ratio, fluidity and air content of the matrix were measured to be decreased, and the strength and density were found to increase. The fluidity and absorption ratio decreased with increasing the replacement ratio of recycled aggregate, and the air quantity, rate of aggregate on the surface, density and intensity increased to a certain level. Therefore, this study intends to make artificial stone using recycled resources and conducted basic experiments for further study.

본 연구에서는 자원 재활용 가능성을 위해 재활용 제품으로 레드머드와 순환 굵은골재를 사용한 무시멘트 인조석재의 제조와 특성에 대한 분석을 실시하였다. 레드머드의 치환율이 증가함에 따라 무시멘트 경화체의 유동성, 공기량, 흡수율은 감소하는 것으로 나타났으며 밀도와 강도는 증가하는 것으로 보인다. 순환 굵은골재를 사용한 인조석재의 경우, 순환 굵은골재의 치환율이 증가할수록 유동성과 흡수율은 감소하며 공기량과 밀도는 증가하는 것으로 나타났다. 순환 굵은골재의 치환율 60%까지 강도는 증가하지만 이후 치환율이 증가하면서 강도는 저하되는 것으로 보인다. 무시멘트 인조석재의 출석률은 순환 굵은골재 치환율과 비례하여 증가하는 것으로 나타났다.

Keywords

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Fig. 1. Purpose of this study

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Fig. 2. Rate of aggregate on the surface of terrazzo tiles

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Fig. 3. Table flow of paste according to red mud replacement raito

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Fig. 4. Air content of paste according to red mud replacement raito

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Fig. 5. Density and water adsorption of paste according to red mud replacement raito

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Fig. 6. Strength of matrix according to red mud replacement ratio

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Fig. 7. Flow according to RCA replacement ratio

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Fig. 8. Air content according to RCA replacement ratio

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Fig. 9. Density and water adsorption of matrix according to RCA replacement ratio

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Fig. 10. Strength of matrix according to RCA replacement ratio

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Fig. 11. Surface of the matrix with RCA replacement ratio (Rate of aggregate on the surface)

Table 1. Chemical composition of used materials

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Table 2. The quality of Recycled coarse aggregate used in this study

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Table 3. Experimental factor and levels(Series I)

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Table 4. Experimental factor and levels(Series II)

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Table 5. Experimental method

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Table 6. KS F 4035 for terrazzo tiles

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Table 7. Assessment of appropriate standards for artificial stone which replaced RCA ratio

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