Performance of steel-making slag concrete reinforced with fibers

Ortega-López, Vanesa; Fuente-Alonso, José A.; Skaf, Marta; Santamarı́a, Anton; Aragón, Ángel; Manso, Juan Manuel García

doi:10.1051/matecconf/201712004001

Cited by 5 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to their good physical, chemical and mechanical properties, EAF slag can be compared to the natural aggregate and thus be suitable for various reuses in the construction sector [ 4 , 58 ] among which the most widespread and consolidated are the cement replacement material and the replacement of fine or coarse aggregates in concrete and asphalt production. In addition to their use in the standard concrete application, few studies on the reuse of the EAF slag as a partial substitution of the natural aggregates in special concretes are available in the literature: pervious concrete, high-strength concrete [ 28 ], self-compacting concrete [ 39 ], and fiber reinforced concrete (using both steel and synthetic fibers) [ 40 ]. The recovery of LFS is less widespread, due to its dusty appearance [ 60 , 61 ].…”

Section: Resultsmentioning

confidence: 99%

Exploring the Potential for Steel Slags Valorisation in an Industrial Symbiosis Perspective at Meso-scale Level

Piemonti

Conforti

Cominoli

et al. 2022

Waste Biomass Valor

View full text Add to dashboard Cite

A greater reuse of steel slags would bring considerable benefits both from an environmental and economic point of view. The development of tools and strategies to monitor at different scales resources and waste flows would allow for better resource planning and a more sustainable management on territory. The aim of this study is to investigate and analyse the supply chain that deals with the management of steel slags at meso-level, in order to investigate the state of implementation of industrial symbiosis (IS), its potential and its improvement. A Mass Flow Analysis (MFA) has been implemented, through big data analysis coming from the integration of regional and provincial databases with a careful data processing from questionnaires. This integrated methodology has proved to be a valid tool to monitor the recovery and reuse, the implementation of industrial symbiosis and to plan improvement actions. This paper reports a representation of the current situation regarding the production, recovery and reuse of these materials in production processes for which they are suitable, with a view to their full exploitation, following the principles of circular economy and an analysis of the mutual exchange that occur among steelmaking plants and other business partners in a network of industrial companies. The results showed that most of the steel slags managed at meso-level (Province of Brescia, Italy) is still unfortunately destined for landfill with low percentage of them classified as by-product highlighting as the IS is not adequately applied. Of the slag destined for treatments and recovery processes, almost all of them are Electric Arc Furnace slag, which are mainly reused for hydraulically bound base layers and road sub-bases (about 85% of the total recovered) and as aggregates for the production of cement and bituminous mixes (about 15% of the total recovered). Results shows as further effort should be made in term of policies and strategies to incentivize IS and to increase the recovery. Graphical abstract

show abstract

Section: Resultsmentioning

confidence: 99%

Exploring the Potential for Steel Slags Valorisation in an Industrial Symbiosis Perspective at Meso-scale Level

Piemonti

Conforti

Cominoli

et al. 2022

Waste Biomass Valor

View full text Add to dashboard Cite

show abstract

“…In addition to their use in the standard concrete, few studies on the reuse of the EAF slag as a partial substitution of the natural aggregates in special concretes are available in the literature: pervious concrete [93], high-strength concrete [94], self-compacting concrete [95], and fiber reinforced concrete (using both steel and synthetic fibers) [58].…”

Section: Leaching Behavior Of Eaf Concrete Specimensmentioning

confidence: 99%

“…Figure 6. Chemical composition of the electric arc furnace slag from carbon steel production (EAF-C) from the literature (average, maximum and minimum values, and distribution of the concentration (in % of weight) of each chemical component) [5,9,11,37,39,[43][44][45][46][48][49][50]52,[54][55][56][58][59][60][61][62][63][64]…”

mentioning

confidence: 99%

Use of Iron and Steel Slags in Concrete: State of the Art and Future Perspectives

et al. 2021

View full text Add to dashboard Cite

In the two last decades, world production of pig iron and steel has undergone a significant increase. In 2018, 1252.87 and 1806.46 million tons of pig iron and steel, respectively, were produced as compared to the 575.78 and 809.94 million tons of 2000. Consequently, the amount of the different types of slags deriving from these production processes has also increased considerably. In relation to the principles of sustainability and circular economy, the available literature suggests several possible reuses for these slags (bituminous conglomerates, hydraulic engineering, metallurgy, fertilizers, etc.). This paper aims to provide an overview of the iron and steel slags production and their reuse in concrete (for example as replacement of cement, fine or coarse aggregates). The characteristics of slags are analyzed in terms of chemical, physical, and mechanical properties. Mechanical and durability tests (both from material and structures point of view) carried out in the different studies and research are shown as well. Particular attention was devoted to electric arc furnace slags (EAF) since they are the most produced in Italy. Based on this deep literature review, the gaps that still require further studies have been identified and discussed.

show abstract

“…If this expansion is controlled, it does not imply any inconvenience for its use in construction materials [18][19][20]. There has also been some research that studied the behavior of mortars or concretes in which the aggregate and/or the cement was partially replaced by LFS and that indicate that its application is viable, improving the properties of mortars and sustainability both in traditional concretes and in self-compacting concretes [21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Replacing Aggregates and Cement by LFS on the Corrosion of Steel Reinforcements

et al. 2019

View full text Add to dashboard Cite

The aim of this study is to investigate the corrosion behavior of steel reinforcement embedded in mortar specimens in which both the aggregate and cement are partially replaced by ladle furnace slag (LFS) and different percentages of chloride ions by weight of cement are introduced into the mix at the time of kneading. The corrosion behavior was studied by using electrochemical techniques in order to evaluate the corrosion rate and the symptoms produced in steels of specimens with and without slag LFS. From the analysis of the results, it is concluded that the use of LFS in a partial replacement of aggregate and cement in mortar specimens does not compromise the behavior of the mortar with regard to corrosion of the steel reinforcement; consequently, partial replacement by LFS is fully feasible from this standpoint.

show abstract

Performance of steel-making slag concrete reinforced with fibers

Cited by 5 publications

References 35 publications

Exploring the Potential for Steel Slags Valorisation in an Industrial Symbiosis Perspective at Meso-scale Level

Exploring the Potential for Steel Slags Valorisation in an Industrial Symbiosis Perspective at Meso-scale Level

Use of Iron and Steel Slags in Concrete: State of the Art and Future Perspectives

The Influence of Replacing Aggregates and Cement by LFS on the Corrosion of Steel Reinforcements

Contact Info

Product

Resources

About