Red mud is a waste generated by the aluminium industry, and its disposal is a major problem for this industry. Red mud has a reddish-brown color and superfine particle characteristics. So, it can be a promising pigment admixture for concrete industry. An experimental study was conducted to investigate the potential use of red mud in color concrete. The micro structures of red mud and iron oxide pigment such as porosity, pore size distribution, diameter of particle were analyzed with the aid of SEM, X-ray diffraction(XRD), and the infrared absorbance. Tests on physical properties of color concrete, such as strength, slump, early shrinkage crack patterns, and color characteristics were carried out and the results were reported in this paper.

• 정동영(건동대학교 건설학부) | Dong Young Jeong
• 최경락(건동대학교 건설학부) | Kyoung Rag Choi
• 김문훈(탐라대학교 토목환경공학과) | Moon Hoon Kim
• 홍종현(탐라대학교 토목환경공학과) | Chong Hyun Hong Corresponding Author