Electric arc furnace slag and its use in hydraulic concrete

Arribas, Idoia; Santamarı́a, Anton; Ruiz, Estela; Ortega-López, Vanesa; Manso, Juan Manuel García

doi:10.1016/j.conbuildmat.2015.05.003

Cited by 176 publications

(66 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Recent results published by Arribas et al [15] have obtained a better quality of the matrix-slag aggregate interfacial transition zone (ITZ), which may explain the enhanced mechanical properties of EAF concrete. However, additional research is required to confirm these relevant findings.…”

Section: Introductionmentioning

confidence: 99%

Electric Arc Furnace Slag as Coarse Recycled Aggregate for Concrete Production

Faleschini

Brunelli

Zanini

et al. 2015

J. Sustain. Metall.

View full text Add to dashboard Cite

Electric arc furnace (EAF) slag is a by-product of steel production in electric arc furnaces. Several studies have tried to demonstrate its suitability in civil engineering application, such as in bituminous mixtures and cementbased materials, due to its good physical, chemical and mineralogical properties. Particularly the re-use as coarse aggregate for concrete production has been shown to be a promising valorisation, when physical and chemical stability is guaranteed. Additionally, EAF slag's high mechanical strength makes it suitable for high-performance concrete production. In this work three EAF concretes, with various cement content and also with silica fume addition, were compared with a reference concrete, to identify a convenient mix design to reach a concrete strength class between C50/60 and C60/75. Mechanical strength was evaluated analysing compressive and tensile strength, and elastic modulus. A complementary microstructural analysis was performed after the failure of the specimens, with the aim of analysing the morphology of the interfacial transition zone. Results indicate that the use of EAF slag in concrete allows reaching higher compressive strength than with coarse natural aggregates. EAF slag application in structural concrete promotes also the reduction of cement content in the mix to reach the same strength class.

show abstract

Section: Introductionmentioning

confidence: 99%

Electric Arc Furnace Slag as Coarse Recycled Aggregate for Concrete Production

Faleschini

Brunelli

Zanini

et al. 2015

J. Sustain. Metall.

View full text Add to dashboard Cite

show abstract

“…It has enhanced strength 32% higher than the natural aggregate concrete. As stated in a previous work [16] from this research group, the ITZ between EAF slag aggregates and the cement matrix will often be of better quality than the ITZ of natural aggregates and cement matrix with a consequent increase in its macroscopic compressive strength.…”

Section: Discussionmentioning

confidence: 96%

Performing self-compacting concrete with electric arc-furnace slag as aggregates

et al. 2017

Self Cite

View full text Add to dashboard Cite

Abstract. The electric steelmaking industry is of great importance to the economy of the Basque Country (Spain). In all, 600,000 tons of electric arcfurnace (EAF) slag are produced every year; a by-product that this research group believes can be transformed into a useful resource. One of the uses of this material is as an aggregate in hydraulic mixes. Many studies have demonstrated that hydraulic mixes manufactured with EAF slag have at least the same mechanical behaviour and durability as ordinary concrete. However, their weaknesses are their higher density and poorer workability. In this paper, the aim is to demonstrate that manufacturing slag concrete to an acknowledged standard of workability is possible; so the objective is to manufacture self-compacting concrete using EAF slag in partial substitution of aggregates. Our analysis of the successful manufacture of three different self-compacting mixes, their properties in the fresh state and their mechanical behaviour yielded very encouraging results.

show abstract

“…In the last approximate 30 years, researches have been conducted on steel slag use as aggregates in concrete and its advantageous properties have been reported (Arribas, Santamaria, Ruiz, Ortega-Lopez, and Manso, 2015;Montgomery and Wang, 1992;Papayianni and Anastasiou, 2010;Sinha, 2014;Sumi and Malathy, 2013). The improvement and modification of concrete mainly come from the unique characteristics of steel slag.…”

Section: Introductionmentioning

confidence: 99%

Can Steel Slag Be Used as an Aggregate in Concrete and How? A Technical Approach by and Testing and Theoretical Molding

Wang

2016

Construction Research Congress 2016

View full text Add to dashboard Cite

Steel slag is the molten byproduct from steelmaking operations that is subsequently air-cooled for use. It has been used in cement manufacture and as unbound granular materials in construction. While numerous studies have revealed that concrete containing steel slag aggregate possesses good mechanical properties, and slag, as a byproduct, is cheaper than virgin aggregates, its practical use in portland cement concrete is currently a forbidden area in the construction practices. What is the practicality, where is the crux of converting research results into to real production, and how to build the bridge between the laboratory experiment and the end products? Based on the philosophy of slag utilization, i.e., laboratory testing, field demonstration, and criteria establishment, the questions to be answered includes (i) two distinct laboratory test methods to determine the expansion force generated by slag particles; (ii) conversion of the expansion force of mass slag aggregate to the expansion force of single slag particle; (iii) mechanical disruption model of slag failure; and (iv) usability criteria for the use of steel slag in a rigid or restrained matrices. The paper introduced the answers for the first two questions; and provides the mechanical model and criterion deduction to answer the other two questions that lead to criteria and specification establishment. 2 INTRODUCTIONThe intention to use of steel slag to replace natural aggregate in concrete is initially based on its availability and good characteristics. In addition, sustainable development of construction industry and conservation of natural resources require using recycled and industrial coproducts of all kinds in construction (Brito and Saikia, 2013; USGS, 2010).

show abstract

Electric arc furnace slag and its use in hydraulic concrete

Cited by 176 publications

References 62 publications

Electric Arc Furnace Slag as Coarse Recycled Aggregate for Concrete Production

Electric Arc Furnace Slag as Coarse Recycled Aggregate for Concrete Production

Performing self-compacting concrete with electric arc-furnace slag as aggregates

Can Steel Slag Be Used as an Aggregate in Concrete and How? A Technical Approach by and Testing and Theoretical Molding

Contact Info

Product

Resources

About