Recycling of ladle slag in cement composites : Environmental impacts

Copyright © 2015 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 43(2015) vom: 01. Sept., Seite 376-85
1. Verfasser: Serjun, Vesna Zalar (VerfasserIn)
Weitere Verfasser: Mladenovič, Ana, Mirtič, Breda, Meden, Anton, Ščančar, Janez, Milačič, Radmila
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Cement composites Environmental impacts Hexavalent chromium Ladle slag Physico-mechanical characteristics Waste Products Chromium 0R0008Q3JB mehr... Barium 24GP945V5T Molybdenum 81AH48963U
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520 |a In the present work compact and ground cement composites in which 30% of cement by mass was replaced by ladle slag were investigated for their chemical and physico-mechanical properties. To evaluate long-term environmental impacts, leachability test based on diffusion, which combined both, diffusion and dissolution of contaminants, was performed in water and saline water. Total element concentrations and Cr(VI) were determined in leachates over a time period of 180days. At the end of the experiment, the mineralogical composition and the physico-mechanical stability of cement composites was also assessed. The results revealed that Cr(III) and Cr(VI) were immobilized by the hydration products formed in the cement composites with the addition of ladle slag. Cr(VI) content originating from the cement was also appreciably reduced by Fe(II) from minerals present in the added ladle slag, which thus had significant positive environmental effects. Among metals, only Mo and Ba were leached in elevated concentrations, but solely in ground cement composites with the addition of ladle slag. Lower V concentrations were observed in leachates of ground than compact composite. It was demonstrated that the presence of ladle slag in cement composites can even contribute to improved mortar resistance. The investigated ladle slag can be successfully implemented in cement composites as supplementary cementitious material 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Cement composites 
650 4 |a Environmental impacts 
650 4 |a Hexavalent chromium 
650 4 |a Ladle slag 
650 4 |a Physico-mechanical characteristics 
650 7 |a Waste Products  |2 NLM 
650 7 |a Chromium  |2 NLM 
650 7 |a 0R0008Q3JB  |2 NLM 
650 7 |a Barium  |2 NLM 
650 7 |a 24GP945V5T  |2 NLM 
650 7 |a Molybdenum  |2 NLM 
650 7 |a 81AH48963U  |2 NLM 
700 1 |a Mladenovič, Ana  |e verfasserin  |4 aut 
700 1 |a Mirtič, Breda  |e verfasserin  |4 aut 
700 1 |a Meden, Anton  |e verfasserin  |4 aut 
700 1 |a Ščančar, Janez  |e verfasserin  |4 aut 
700 1 |a Milačič, Radmila  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management (New York, N.Y.)  |d 1999  |g 43(2015) vom: 01. Sept., Seite 376-85  |w (DE-627)NLM098197061  |x 1879-2456  |7 nnns 
773 1 8 |g volume:43  |g year:2015  |g day:01  |g month:09  |g pages:376-85 
856 4 0 |u http://dx.doi.org/10.1016/j.wasman.2015.05.006  |3 Volltext 
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