Utilization of Electric arc Furnace Oxidizing Slag as Concrete aggregates

• Main Authors: Lee Chen, 陳立
• Other Authors: wei-hsing Huang
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/18879892087165374798

博士 === 國立中央大學 === 土木工程研究所 === 91 === Electrical arc furnace oxidizing slag is the by-product produced by the steelmaking plants from using recycled iron. The growing demand for steel has resulted in significant increase in the production of electrical arc furnace slag. Also, disposal of the slag has become more costly to the steelmaking industry due to stringent environmental regulations. Therefore, interest in this slag as a substitute for conventional construction material has increased considerably in recent years. The utilization of the slag not only solves a waste disposal problem but also provides an economic construction material. This study assesses those properties of electrical arc furnace slag that are likely to affect its use as a replacement for conventional aggregate in making concrete. After crushing and screening processes, electric arc furnace oxidizing slag was evaluated, in the laboratory, for the potential as an alternative of aggregate in making concrete. Tests included complete chemical analysis and physical properties, Mineral composition, expansion test, environmental influence test, Toxicity characteristic leaching procedure, alkali aggregate reaction, concrete mix design and strength development, Microstructure analysis and test pavement build. ………. The economic potential of the utilization of slag as construction materials demand more versatile applications of this by-product. This study demonstrated that the incorporation of slag in concrete is feasible. More areas in construction related applications of electric arc furnace slag are yet to be developed.