HOT MIX RECYCLING - DEVELOPMENTS IN THE RSA AND RECOMMENDED APPROACHES AND CONTRACTURAL PROCEDURES --PROCEEDINGS OF THE FOURTH CONFERENCE ON ASPHALT PAVEMENTS FOR SOUTHERN AFRICA, HELD CAPE SUN HOTEL, CAPE TOWN, REPUBLIC OF SOUTH AFRICA, 12-16 MARCH 1984. VOL 1 & VOL 2.

Two factors that appear to be inhibiting a more general acceptance of hot-mix recycling by road authorities are the uncertainty about the quality of the resultant mix and vagueness about the expected savings that might accrue. This paper describes two developments that will assist in clarifying the situation. The first is a mini recycling plant that has been built for the purpose of examining the quality of recycled mixes. A feature of this plant is its ability to control the mixing and heating of the constituent materials for a wide range of recycling ratios. The controls of the plant are now being used in the design of a plant for commercial purposes. The second development is a cost model for estimating the savings that would be obtained from using the recycling option instead of conventional resurfacing. This model will be useful for giving road authorities an idea of the overall economic consequences of encouraging hot mix recycling. In particular the expected savings and doubts about the mix quality can be brought into perspective.(a) for the covering abstract of the conference see IRRD 815702.

• Corporate Authors:

  EXECUTIVE COMMITTEE CAPSA '84

  PO BOX 6946
  Roggegaai,   South Africa 
• Authors:
  • Servas, V P
  • Curtayne, P C
  • Walker, R N
• Publication Date: 1984

Language

• Afrikaans

Media Info

• Pagination: p. 353-63
• Serial:
  • Publication of: EXECUTIVE COMMITTEE CAPSA '84
  • Publisher: EXECUTIVE COMMITTEE CAPSA '84

Subject/Index Terms

• TRT Terms: Benefit cost analysis; Conferences; Hot coated materials; Mathematical models; Mix design; Mixers; Mixing plants; Quality control; Recycling; Surveillance
• Uncontrolled Terms: Quality
• Geographic Terms: South Africa
• Subject Areas: Data and Information Technology; Finance;

Filing Info

• Accession Number: 00483041
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: May 31 1989 12:00AM