Use of Electric Arc Furnace Slag for High Strength Concrete Production

2016 ◽  
Vol 847 ◽  
pp. 537-543
Author(s):  
Flora Faleschini ◽  
Mariano Angelo Zanini ◽  
Katya Brunelli ◽  
Carlo Pellegrino
Keyword(s):  
Microstructural Analysis ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Environmental Benefits ◽  
Recycled Aggregates ◽  
Arc Furnace ◽  
Concrete Production ◽  
Eaf Slag ◽  
Electric Arc Furnace Slag ◽  
Furnace Slag

In this paper the use of Electric Arc Furnace slag (EAF slag) for the production of High-Performances Concrete (HPC) is explored, as a fully replacement of the natural gravel. Several mixtures were produced, varying the water/cement ratio, the cement and the admixture content, with the aim of reaching a strength class between C50/60 and C60/75, and an S4 consistency class, as defined in EN 206-1. Mechanical properties of EAF concretes were compared with reference conglomerates; a complementary microstructural analysis was performed, with SEM observation after concrete specimens' failure. Results indicate that the use of EAF slag in concrete allows reaching higher compressive strength than with coarse natural aggregates. Lastly, the environmental benefits obtained through the use of recycled aggregates are shown, by means of the application of a Life Cycle Assessment (LCA) tool properly developed for this scope.

scholarly journals Innovative Reuse of Electric Arc Furnace Slag as Filler for Different Polymer Matrixes

Minerals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 832
Author(s):  
Anna Gobetti ◽  
Giovanna Cornacchia ◽  
Giorgio Ramorino
Keyword(s):  
Electric Arc Furnace ◽  
Electric Arc ◽  
Environmental Benefits ◽  
Butadiene Rubber ◽  
Arc Furnace ◽  
Sem Images ◽  
Neat Polymer ◽  
Hardness Tests ◽  
Eaf Slag ◽  
Electric Arc Furnace Slag

The European steel industry produces about 70 million tons/year of steel by the electric arc furnace (EAF). The slag consists of about 15% by weight of the produced steel, thus from the perspective of the circular economy, it has a high potential as a co-product. This research aims to assess an innovative reuse of EAF slag as filler in different polymer matrixes: thermoplastic (polypropylene), thermosetting (epoxy resin), elastomeric (nitrile butadiene rubber), and recycled end of life rubber tire. A comparison between neat polymer and polymer filled with a certain amount of EAF slag has been carried out by tensile (or flexural), compression, and hardness tests. Experimental results show that slag as a filler increases the composites’ hardness and elastic modulus at the expense of toughness. For a safe reuse of the slag, the leaching of hazardous elements must comply with current legislation. It was found that, although the used EAF slag releases small amounts of Cr, Mo, and V, incorporating it into a polymer matrix reduces the leaching. The EAF slag particles distribution has been observed by scanning electron microscopy (SEM) images. The obtained results show good technical feasibility of this innovative slag application so that it could pave the way to a new industrial symbiosis between dissimilar sectors, bringing economic and environmental benefits.

The EAF Slag as Construction Material

2007 ◽  
Vol 537-538 ◽  
pp. 671-678
Author(s):  
Róbert Márkus ◽  
Oszkár Grega
Keyword(s):  
Ground Water ◽  
Building Material ◽  
Construction Material ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Metallurgical Slag ◽  
Arc Furnace ◽  
Eaf Slag ◽  
Electric Arc Furnace Slag ◽  
Furnace Slag

The metallurgical slag is a normal building material in Europe but not in Hungary. I prove by my own researches that the electric arc furnace slag isn’t harmful to the nature especially the ground water and their physical aspects are similar to the natural rocks. It means that we can use slag to replace them to save our environment and to clear away the old slag dumps.

scholarly journals Electric Arc Furnace Slag as Coarse Recycled Aggregate for Concrete Production

2015 ◽  
Vol 2 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Flora Faleschini ◽  
Katya Brunelli ◽  
Mariano Angelo Zanini ◽  
Manuele Dabalà ◽  
Carlo Pellegrino
Keyword(s):  
Electric Arc Furnace ◽  
Electric Arc ◽  
Recycled Aggregate ◽  
Arc Furnace ◽  
Concrete Production ◽  
Electric Arc Furnace Slag ◽  
Furnace Slag

scholarly journals Reduction Of Environmental Pressure By Giving Cementing Material Properties To The Ferrous Slags

2017 ◽  
Vol 2 (2) ◽  
pp. 65
Author(s):  
Mikheenkov M. A. ◽  
Sheshukov O. Yu. ◽  
Lobanov D. A.
Keyword(s):  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Crude Steel ◽  
Furnace Process ◽  
Eaf Slag ◽  
Electric Arc Furnace Slag ◽  
Cementing Material ◽  
Metallurgy Process ◽  
Furnace Slag

There are two main kinds of slag in modern steelmaking industry: the electric arc furnace slag (the EAF slag) which is produced in the manufacture of crude steel by the electric arc furnace process and the ladle furnace basic slag (the LF slag) which is produced at the final stages of steelmaking, when the steel is desulfurized in the transport ladle, during what is generally known as the secondary metallurgy process.

Hydrothermal synthesis of mixtures of NaA zeolite and sodalite from Ti-bearing electric arc furnace slag

RSC Advances ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 8358-8366 ◽  
Author(s):  
Yang Li ◽  
Tiehong Peng ◽  
Wenkuan Man ◽  
Liangchen Ju ◽  
Feng Zheng ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Naa Zeolite ◽  
Removal Capacity ◽  
Eaf Slag ◽  
Electric Arc Furnace Slag ◽  
Furnace Slag

NaA and sodalite zeolites were synthesized from Ti-bearing EAF slag and the removal capacity of prepared zeolite for Cu2+ can reach 1.346 mmol g−1 for 180 min.

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