Electric Arc Furnace Steel Slag: Base Material for Low-Volume Roads

Abstract

The results of a study of the use of electric furnace slag as pavement aggregates are presented. Slag is generated as waste during steel production in industrial plants that use electric arc furnaces. Tests for the following were carried out to determine the characteristics of the aggregate: grain size distribution, soundness, Los Angeles abrasion, compaction, California bearing ratio, resilient modulus, and expansion. To use the slag as a granular layer, its grain size distribution had to be corrected. This procedure increased the bearing capacity and workability of the material. Evaluation of the expansion potential showed that the slag must be stocked in the open air for at least 4 months before it can be used in pavement construction. After correction of the gradation, the slag presented a resilient modulus that exceeded those of traditional granular materials; its use resulted in thinner and cheaper pavements. The results of the study led to the conclusion that the use of electric arc furnace slag as pavement material is possible and that it provides remarkably good technical quality and economic advantages.

Characterisation and utilisation of steel slag for the construction of roads and highways

“…Satisfactory results of resilient modulus were obtained from EAF steel slag as compared with the natural aggregates. 32 Aiban and Abdul Wahhab 28 incorporated a mixture of marl and sand with 30-85% of steel slag by weight for road base and obtained CBR values of up to 455%, for use as base and sub-base courses. Properties of cement stabilised steel slag have also been studied.…”

“…The results generally showed higher values of maximum dry unit weight compared with natural aggregates. Rohde et al 32 have studied the compaction characteristics of EAF steel slag of different grades by standard proctor compaction test method. The optimum moisture content and maximum dry weight of EAF steel slag were found to be within the range of 3-6% and 23-26 kN m −3 .…”

“…The percentage of silt size particle remains within the range of 10-15%. 21,22,32 Compaction characteristics Limited studies have been carried out on the compaction of steel slag. The results generally showed higher values of maximum dry unit weight compared with natural aggregates.…”

Use of steel waste for the application in urban paving

“…In Brazil, the use of steel slag in paving is not new, there are several experimental road test sections constructed decades ago that show the satisfactory performance of the material in such engineering works. In this context, several researches have demonstrated the technical feasibility of using steel slag waste in layers of pavement structures (Rohde, Núñez & Ceratti, 2003a;2003b;Velten et al, 2006;Huang, Bird, & Heidrich, 2007;Ahmedzade & Sengoz, 2009;Pasetto & Baldo, 2011;Patil, Bachhav, & Kshirsagar, 2016).…”

Utilization of Steel Slag As Road Base And Subbase Material

“…Marn ve kum gibi doğal agregaya değişen oranlarda çelikhane cürufu katılmasıyla oluşan karışımlarında %455'e varan CBR değerleri elde edilmiştir [14] Yapılan çalışmalar elektrik ark fırın (EAF) cürufu esneklik modülünün doğal agregaya göre oldukça yüksek olduğunu göstermiştir. Düşük trafik hacmine sahip yollarda temel malzemesi olarak kullanıldığında yol maliyetini önemli ölçüde azaltmaktadır [15]. Çimento ile aktive edilmiş çelikhane cürufu doğal zemin karışımlarının yol tabanında kullanılması durumunda, temel tabakasının daha ince seçilebilmesine olanak vermesine ve yol yapım maliyetini düşürebileceği görülmüştür [16].…”