Preliminary Investigation into the Utilization of Cupola Slag as Road Construction Material

This paper describes how cupola slag is a foundry waste that collects undesired substances that are separated from metal in furnaces designed for cast iron production. Arising from pig iron, scrap iron, calcareous flux and silica refractory, it is generally composed of four oxides (SiO2, CaO, Al2O3, MgO). From a legal point of view, it can be defined as non-hazardous special industrial waste, which can be used as road construction material in conformity with the laws in force at the European and national level. This study investigates the possibility of using the above described waste as aggregate for construction of embankments, subgrade and subbase layers. Preliminary leaching tests and SEM-EDS analysis were performed, followed by laboratory tests on ground material. Results obtained suggested that the material studied can be utilized without binding additives for road construction. Preliminary tests also suggested that for heavy-duty utilization, performance can be increased by use of cement.

• Corporate Authors:

  Politecnico di Torino

  Turin,   Italy 
• Authors:
  • Lancieri, F
  • Marradi, A
  • Ridondelli, G
• Conference:
  • Sixth International Conference on Maintenance and Rehabilitation of Pavements and Technological Control (MAIREPAV6)
  • Location: Turin , Italy
  • Date: 2009-7-8 to 2009-7-10
• Publication Date: 2009

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; Photos; References; Tables;
• Pagination: 11p
• Monograph Title: International Conference on Maintenance and Rehabilitation of Pavements and Technological Control (MAIREPAV6), Sixth Proceedings

Subject/Index Terms

• TRT Terms: Aggregates; Foundry sand; Laboratory tests; Recycled materials; Road construction; Slag; Subbase (Pavements); Subgrade (Pavements); Wastes
• Subject Areas: Highways; Materials; Pavements; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01139867
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 18 2009 7:07AM