USE OF ENERGY-EFFICIENT SINTERED COAL REFUSE IN LIGHTWEIGHT AGGREGATE

The development and evaluation of a synthetic lightweight aggregate that has particular application to the building and transportation construction industries are described. Bituminous coal refuse, a waste product obtained from five coal-preparaton plants in Kentucky, was successfully sintered on a pilot-sized traveling grate to produce lightweight construction aggregate. An improved sintering-grate process was used. A means is thus provided for using a waste product while gaining an economic advantage during processing from the inherent fuel value of the refuse. A thorough laboratory investigation of the aggregate as a material for use in bituminous concrete mixes and structural lightweight portland cement concrete indicated that a satisfactory aggregate for these construction materials was produced. Using lightweight aggregate from sintered coal-mine refuse in concrete construction offers significant technical and economic incentives from the standpoints of reduced weight and the greatly reduced thermal conductivity of the products formed. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; Maps; Photos; References; Tables;
  • Pagination: pp 7-16
  • Monograph Title: Copper mill tailings, incinerator residue, low-quality aggregate characteristics and energy savings in construction
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00316668
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Oct 27 1980 12:00AM