Epoxy-Resin/Calcined Bauxite Surface Dressing on A1, Sandy, Bedfordshire: Skid-Resistance Measurements, 1968 to 1977

摘要

A surface dressing consisting of an epoxy-resin-based binder and approximately 2 to 3mm size calcined bauxite chippings, with the proprietary name 'Shellgrip', was laid at the approach to traffic signals on Trunk Road A1 at Sandy, Bedfordshire in 1968. Materials of this type maintain exceptionally good resistance to skidding under intense traffic in urban (low-speed) conditions. The primary objective of this experiment was to determine whether this small size of chipping could give sufficient texture-depth to maintain good resistance to skidding at high speed. The laying operation and early life performance have already been reported. This report gives the results of sideway force coefficient, and braking force coefficient measurements made at regular intervals since 1968. (Copyright (c) Crown Copyright 1978.)