TRL conducted a research project entitled \"Highway Engineering Materials in Southern Africa\". The project comprised four components:
natural gravels for road construction
chemically stabilised roadbase materials
development of a computerised materials inventory
the environmental impact of borrow-pit extraction
Prior to finalisation of the technical reports for each of the four components, the findings of the project were presented in a series of workshops in the four collaborating countries (Botswana, Malawi, Zambia and Zimbabwe). This report summarises the outcomes of the workshops.
In addition to the four components of the workshop, feedback was also given on the revised calcrete specifications emanating from a previous project to evaluate the performance of test sections in Botswana.