CABLE PROTECTIVE PIPE, CABLE PROTECTIVE PIPE JOINT AND CABLE CONDUIT

摘要

PROBLEM TO BE SOLVED: To minimize the damages of a cable protective pipe and a cable protective pipe joint, even if a fire occurs under a bridge and use them continuously after a fire. SOLUTION: A protective pipe is made of fiber-reinforced synthetic resin, whose impregnating resin is brominated unsaturated polyester resin. Inorganic flame-retardant agent is added to the impregnating resin. A flame-retardant polyester nonwoven fabric is used as the fiber material, of which the surface layer 15 of the protective pipe is made. Or the protective pipe is made of a fiber-reinforced synthetic resin whose impregnating resin contains brominated unsaturated polyester resin as its main component. The protective pipe is used as a cable protective pipe installed along a bridge.