Towards successful SPP treatment of local materials for road building

Abstract

This report discusses the use of certain proprietary soil stabilisers in low volume roads in South Africa. Although ionic soil stabilisers have been in use for many years, they have not been marketed to their fullest potential and in many cases have not performed up to expectation. Recent work has shown that provided they are used in the right context with suitable natural soils, significant savings can be achieved, particularly in low volume roads. This could be particularly beneficial in view of the increasing need for improvement of the rural road network and of roads associated with the Reconstruction and Development Program (RDP). Recommendations for testing materials for compatibility with SPPs are provided. In addition, a detailed construction procedure and recommendations on quality control, which have been found to improve the success rate of the products significantly, are provided