Engineering performance evaluation of mortar with EOS (electric arc furnace oxidizing slag) as fine aggregate
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Electric arc furnace oxidizing slag (EOS), in the fine aggregate form, can effectively be utilized as a construction material. However, its engineering properties vary with the manufacturing processes employed and the producing district, thereby causing observed differences in material performance. In this study, EOS was obtained from steel manufacturing plants in South Korea, and engineering properties of standalone EOS, as well as in combination with cement mortar were separately evaluated. Test results demonstrate that EOS primarily comprises CaO, SiO2, and FeO in combination with 18.2% larnite, which possesses β-C2S crystal structure with a similar cement mineral. The EOS mortar combination demonstrated increasing compressive strength with an increase in EOS content due to the effect of a considerable amount of β-C2S present in EOS. The EOS-based mortar with electric arc furnace reduction slag (ERS) demonstrated unsatisfactory results in accordance with a criterion set for the length rate of change. This implies that more consideration is required toward the use of mixed ERS and EOS in cement mortars due to the swelling effect of ERS on dimensional stability.
KeywordsEOS (electric arc furnace oxidizing slag) β-C2S Cement mortar ERS (electric arc furnace reduction slag) Length rate of change
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (No.2015R1A5A1037548).
- 1.Steel statistical yearbook (2016), World steel associationGoogle Scholar
- 4.Mioc AR, Sofilic T, Mioc B (2009) Application of electric arc furnace slag. Izvorni Znanstveni Rad 2:436–444Google Scholar
- 16.KS F 4571 (2011) Electric arc furnace oxidizing slag aggregate for concrete. Korean Agency for Technology and StanardsGoogle Scholar
- 17.KS F 2502 (2014) Standard test method for sieve analysis of fine and coarse aggregates. Korean Agency for Technology and StandardsGoogle Scholar
- 18.KS F 2504 (2014) Testing method for density and absorption of fine aggregate. Korean Agency for Technology and StandardsGoogle Scholar
- 19.KS L ISO 679 (2016) Methods of testing cements: determination of strength. Korean Agency for Technology and StandardsGoogle Scholar
- 20.KS L 5107 (2016) Testing method for autoclave expansion of Portland cement. Korean Agency for Technology and StandardsGoogle Scholar
- 21.Gebhardt RF (1988) Rapid Methods for Chemical Analysis of Hydraulic Cement, ASTM, Philadelphia. Special Technical Publication 985Google Scholar
- 22.Chalasani D, Cartlendge FK, Eaton HC, Tittlebau ME, Walsh MB (1986) The effects of ethylene glycol on a cement based solidification process. J Hazard Mater 3:167–173Google Scholar
- 24.KS F 2501 (2016) Standard test method for sampling aggregates. Korean Agency for Technology and StandardsGoogle Scholar