THE PERFORMANCE OF ROADS WITH MINE DUMP ROCK LAYERS IN SOUTH AFRICA

In the central Orange Free State, in the Republic of South Africa, sandy-clay materials predominate and road builders continuously face the problem of obtaining suitable materials. This region is important for its gold mining, and one of the predominant features is the massive heaps with waste rock from the mines. The mine dump rock could potentially be used for road building, but its use has been limited because of a lack of design parameters and performance records. The aim of this paper is to present design guidelines for pavements constructed with mine dump rock based on long term pavement performance and accelerated pavement testing. This paper first describes the current practice with the use of mine dump rock such as selection guidelines and construction techniques. Thereafter the performance of mine dump rock pavements, that have been in service for up to 10 years, were evaluated for their riding quality, visual, and structural performance. A control section and two mine dump rock pavements specially constructed were tested with a Heavy Vehicle Simulator.

• Corporate Authors:

  Minnesota Department of Transportation

  395 John Ireland Boulevard
  St Paul, MN  United States  55155
• Authors:
  • Verwey, G
  • Visser, A T
• Conference:
  • 4th International Conference, Bearing Capacity of Roads and Airfields
  • Location: Minneapolis, MN
  • Date: 1994-8-17 to 1994-8-21
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 1309-1329
• Serial:
  • Volume: 2

Subject/Index Terms

• TRT Terms: Design; Driving simulators; Guidelines; Heavy vehicles; Materials; Pavements; Performance; Riding qualities; Roads; Sandy clays; Structures; Time duration
• Uncontrolled Terms: Long term; Parameters; Visual
• Geographic Terms: South Africa
• Old TRIS Terms: Layers; Mine dump rock; Structural; Waste rock
• Subject Areas: Bridges and other structures; Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00730569
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Feb 3 1997 12:00AM