scholarly journals Effect of Micro-Silica Addition into Electric Arc Furnace Steel Slag Eco-Efficient Concrete

2021 ◽  
Vol 11 (11) ◽  
pp. 4893
Author(s):  
Ali. Aghajanian ◽  
Carlos. Thomas ◽  
Kiachehr. Behfarnia
Keyword(s):  
Mechanical Properties ◽  
Steel Slag ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Environmental Friendliness ◽  
Fine Grained ◽  
Optimal Mix ◽  
Furnace Steel ◽  
Natural Aggregates

Concrete produced from electric arc furnace steel slag aggregates is one of the items that is highly regarded due to its strength, environmental friendliness and cost-effectiveness. Despite the growing interest in using this type of concrete, there are still doubts about the mix proportions and addition effects of electric arc furnace steel slags. In this paper, the performance of replacing natural aggregates by electric arc furnace steel slags aggregate is comprehensively investigated and its effect on mechanical properties is analysed. The relationship between the percentage of replacement of natural aggregate using electric arc furnace steel slags aggregate in two parts of coarse aggregate and fine-grained aggregate and the effect of each of these parts on mechanical properties in concrete is investigated, which may identify the optimal mix proportions of each aggregate that help to improve the strength of the eco efficient concrete using electric arc furnace steel slags.

Environmental Impacts of Asphalt Mixes with Electric Arc Furnace Steel Slag

2011 ◽  
Vol 40 (4) ◽  
pp. 1153-1161 ◽  
Author(s):  
Radmila Milačič ◽  
Tea Zuliani ◽  
Tina Oblak ◽  
Ana Mladenovič ◽  
Janez Šč ančar
Keyword(s):  
Environmental Impacts ◽  
Steel Slag ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Asphalt Mixes ◽  
Furnace Steel

Effect of basicity on cementitious activity of modified electric arc furnace steel slag

2019 ◽  
Vol 116 (2) ◽  
pp. 217
Author(s):  
Xiang Lu ◽  
Wenbin Dai ◽  
Xiaoming Liu ◽  
Daqiang Cang ◽  
Liang Zhou
Keyword(s):  
Raman Spectra ◽  
Steel Slag ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Nonbridging Oxygen ◽  
Arc Furnace ◽  
Polymerization Degree ◽  
Furnace Steel ◽  
Basicity Index ◽  
Cementitious Activity

Electric arc furnace steel slag was modified by wastes in hot-stage process with the aim to improve the cementitious activity. Effect of basicity on cementitious activity of modified steel slag was investigated in this research. The modified slag was characterized by XRD, DTA and Raman spectra techniques to investigate the correlations between structural features and the cementitious activity. The results showed that modified steel slag with a basicity index of 1.67 possessed the highest activity index, 107%, due to the precipitation of Belite, high content of amorphous phase and low polymerization degree. The polymerization degree of modified slag was demonstrated by nonbridging oxygen per tetrahedrally coordinated cations value which was calculated through curve-fitted Raman spectra. The value of modified slag increased as the basicity promoted from 1.05 to 1.67, indicating a lower degree of polymerization. Modified slag with a basicity index of 1.86 possessed the poor cementitious activity mainly because of the significant decrease of glass phase content.

Valorisation of electric arc furnace steel slag as raw material for low energy belite cements

2011 ◽  
Vol 196 ◽  
pp. 287-294 ◽  
Author(s):  
R.I. Iacobescu ◽  
D. Koumpouri ◽  
Y. Pontikes ◽  
R. Saban ◽  
G.N. Angelopoulos
Keyword(s):  
Steel Slag ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Low Energy ◽  
Raw Material ◽  
Arc Furnace ◽  
Furnace Steel
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