Getting to grips with manhole covers

摘要

GripTop is Saint-Gobain PAM UK's ductile iron access cover range, which has been engineered to bring together the benefits of ductile iron, high performance bonding agents and resins and bauxite aggregate. The result being a durable, high friction, anti -skid surface which as the testing has shown, maintains a high PSRV and ultimately prolonged grip over time. Ductile iron has a proven track record as the material of choice for carriageway access cover applications giving many years of service. In areas of high traffic volume, it is not uncommon for standard access covers of whatever material to become polished over time through the abrasive action of vehicle tyres, potentially resulting in poor skid resistance for road users.