Stålslagg i asfaltbeläggning: en kunskapsöversikt samt fältförsök i Dalarna
2008 (Swedish)Report (Other academic)
The report includes a literature study concerning steel slag as aggregate for asphalt mixtures. Environmental aspects and relevant test methods for use of steel slag have been highlighted in this work. A study tour has been made to south-west Götaland, Sweden, and to Denmark, where steel slag has been used for bituminous pavements for many years. Furthermore, test sections performed later at Dalarna are presented, too. In connection with steel production slag is produced as a by-product. Steel slag is used in many countries as bound or unbound layers in road construction. This report deals with slag from steel production in Smedjebacken, so called EAF slag (Electric Arc Furnace slag, sometimes called LB slag) used as aggregate in bituminous pavements. There are positive experiences from Halmstad and Laholm where EAF slag has been used as wear course on densely trafficked roads and streets since the beginning of 1990s. In Denmark, EAF slag from, for instance, steel production in Smedjebacken is frequently used in roundabouts and on densely trafficked roads and streets. The slag from Smedjebacken has good mechanical properties. The slag becomes, after crushing in several stages, cubical, but retains at the same time its rough surface by way of porosity. This gives the bituminous pavement very good stability. As the slag contains a suitable amount of unbound lime (<0,5 %) the durability against water is very good. In order to eliminate the risk of swelling, the slag is stored outdoors for about one year.
Place, publisher, year, edition, pages
Linköping: VTI., VTI notat 5-2008 , 2008. , 44 p.
Slag, Steel, Alternative aggregate, Bituminous mixture, Flexible pavement, Test, In situ, Laboratory, Experimental road, State of the art report, Test method, Properties, Resistance, Wear, Surfacing, Durability
Research subject Road: Materials, Road: Aggregate and stone materials; Road: Highway design, Road: Surfacing
IdentifiersURN: urn:nbn:se:vti:diva-1660OAI: oai:DiVA.org:vti-1660DiVA: diva2:670372