Perpetual pavements for Southern Africa

Abstract

This technical paper explores the concept of perpetual pavements and its applicability in Southern Africa. Beginning with a historical overview of the development of perpetual pavements, the paper examines their successful application in America, Europe, and other regions. The focus then shifts to the potential implementation of perpetual pavements in Southern Africa, considering regional factors and proposing typical concept pavements suited to the unique challenges and conditions of the area. Based on the insights gathered, recommendations for the implementation of perpetual pavements in Southern Africa include the use of Enrobé à Module Élevée (EME) asphalt as a base layer with either a granular or cemented subbase supporting layer, optimized to ensure initial pavement failure is located in the surfacing layer. Emerging technologies, such as advanced asphalt mix formulations and nano technology, have the potential to further enhance the performance and sustainability of perpetual pavements.