New surface dressing binders are being developed for surface dressing difficult road sites to provide a high resistance to skidding where vehicles turn or brake. The performance in road experiments of seven binders, containing between 13 and 50 per cent epoxy-resin, has already been reported. This report describes the dynamic viscoelastic properties, and ultimate tensile strength and elongation at break of each binder at temperatures between 0 and 60 degrees c. A reasonable correlation has been found between these properties and the performance of the binders in the road experiments. A laboratory test in which small areas of surface dressing were trafficked by a pneumatic tyre, is also described. A reasonable correlation has also been found between this test and road performance. (Author/publisher)
Samenvatting