Netterberg, FPaige-Green, Phil2012-02-152012-02-151988-07Netterberg, F and Page Green, P. 1988. Wearing courses for unpaved roads in southern Africa: a review. SAICE and ATC 1988. Developing countries - Civil Engineering and Transportation, Pretoria, vol.2D, no.5http://hdl.handle.net/10204/5569CSIR report RR631. Reprinted from Proceedings of 1988 Annual Transportation Convention S.443, Vol 2D, Paper 2D-5, Pretoria, July 1988, pp 36The requirements of and some specifications for wearing courses for unpaved roads are reviewed. It is concluded that further development of specifications is required, and that there is probably great scope for improvement of our unpaved roads through better materials selection and proper compaction. Whereas it may often be relatively easy to select a satisfactory coarse grained material visually, it appears that there is only a 15:50 chance of satisfactory material being placed on the road when it is fine-grained. In such cases testing must be carried out. More use of the CBR test for materials selection seems to be indicated, as well as simple field and laboratory control tests. For improved materials selection to be successful more attention will probably also have to be paid to improve material location.enUnpaved roadsRoad constructionTransportationWearing courses for unpaved roads in southern Africa: a reviewReportNetterberg, F., & Paige-Green, P. (1988). <i>Wearing courses for unpaved roads in southern Africa: a review</i> Retrieved from http://hdl.handle.net/10204/5569Netterberg, F, and Phil Paige-Green <i>Wearing courses for unpaved roads in southern Africa: a review.</i> 1988. http://hdl.handle.net/10204/5569Netterberg F, Paige-Green P. Wearing courses for unpaved roads in southern Africa: a review. 1988 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/5569TY - Report AU - Netterberg, F AU - Paige-Green, Phil AB - The requirements of and some specifications for wearing courses for unpaved roads are reviewed. It is concluded that further development of specifications is required, and that there is probably great scope for improvement of our unpaved roads through better materials selection and proper compaction. Whereas it may often be relatively easy to select a satisfactory coarse grained material visually, it appears that there is only a 15:50 chance of satisfactory material being placed on the road when it is fine-grained. In such cases testing must be carried out. More use of the CBR test for materials selection seems to be indicated, as well as simple field and laboratory control tests. For improved materials selection to be successful more attention will probably also have to be paid to improve material location. DA - 1988-07 DB - ResearchSpace DP - CSIR KW - Unpaved roads KW - Road construction KW - Transportation LK - https://researchspace.csir.co.za PY - 1988 T1 - Wearing courses for unpaved roads in southern Africa: a review TI - Wearing courses for unpaved roads in southern Africa: a review UR - http://hdl.handle.net/10204/5569 ER -