Patent ID: 11940068
Assignee: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B  Y | IPC B  F

Claim 0:
1. A cementitious pipe comprising:
a plurality of reinforced cementitious pipe sections comprising a hardened cementitious matrix and a reinforcement comprising a plurality of polymer fibers randomly dispersed in said hardened cementitious matrix, said reinforced cementitious pipe sections not having integral end connections located at opposite longitudinal ends of the pipe section for connecting one pipe section to another pipe section, said reinforced cementitious pipe sections have a wall thickness from about 2 inches to about 5 inches and a diameter of about 60 inches to about 110 inches, said reinforced cementitious pipe sections positioned in abutting contact in an end-to-end manner along their longitudinal axis to form a joint, said reinforced cementitious pipe sections are joined together in said end-to-end manner with a fiber reinforced polymer composite wrapped around the joint, and a polymer layer applied over the fiber reinforced polymer composite, the fiber reinforced polymer composite having a first width and the polymer layer having a second width wider than the first width; wherein the fiber reinforced polymer composite wrapped around the joint consisting essentially of a layer of polymer resin, a reinforcing fibrous fabric at least partially embedded in the layer of polymer resin, and another layer of polymer resin to cover the fibrous fabric layer.