oa Civil Engineering = Siviele Ingenieurswese - Hot in situ recycling of asphalt surfacing

Volume 5, Issue 8
  • ISSN : 1021-2000



Hot in situ recycling of asphalt surfacing highlights the use of alternative and innovative technology for a common engineering problem The process of hot in situ recycling (HIR) of asphalt surfacing provides a cost-effective method of road surface rehabilitation with an exceptional reduction in road user delays - rehabilitation is completed in a single pass and completed sections are opened to traffic within one to two hours. When this technology was used for the first time in Cape Town, the project, which involved the rehabilitation of the existing asphalt surfacing layer on various streets within the municipal area of Cape Town, was completed five weeks ahead of schedule and below budget. A total of approximately 406 000 m2 on different road sections were recycled.

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