Study of the Use of Electric Arc Furnace Slag in Iron and Steel Complex as an Alternative to Aggregates in Cement Concrete (Paving Concrete)

Abstract

The study examined the effect of using electric arc furnace slag in the Iron and Steel Factory in Misurata on the properties of cement concrete (paving concrete), using slag as a complete substitute for the coarse and fine natural aggregates used in concrete. and 100% slag instead of natural aggregate, the main reasons for our study To take advantage of the large quantities of slag produced from the iron and steel industry in the Misurata, at 2.9 million tons, with an increase rate of approximately 2.9 million tons. 100,000 tons per year, we are trying to provide an alternative to natural aggregates that stops the depletion of natural resources (SDGs). As for the research methodology, we first collected slag samples, then carried out crushing and grading with sieves, then carried out mechanical and physical tests, and then prepared cement mixtures of different grades:(C15, C25, C30, C35, C40, C45). In this study, we reached several results, the most important of which are, The slag is highly absorbent and the corrosion resistance of the slag is high. We also observed an increase in pressure resistance compared to the designed grade, especially in the smaller grades. We also noted that the specific weight of slag is greater than the specific weight of natural aggregates, and this may be due to the presence of iron in the slag, which increases its weight. Through these and other results, we recommend the use of slag in solid paving.