Rehabilitation of Large Diameter Prestressed Cylinder Concrete Pipe (PCCP) with FRP Composites — Experimental Investigation

Abstract

Fiber reinforced polymer (FRP) composites can be effectively used to repair deteriorating prestressed concrete cylinder pipe (PCCP) through application as an internal structural liner. This paper presents results of an extensive test program using pipe sections under internal pressure and external loading and demonstrates the viability of the method. The use of both adhesively bonded prefabricated strips and wet layup of fabric is discussed and results show that the use of an appropriately designed FRP structural liner can completely make up for loss of structural action from the external prestressing. The method is shown to be both structurally efficient and rapid providing a cost-effective alternative to conventional methods of preventive maintenance and repair.