A composite is a combination of two or more materials, differing in form or composition, which retain their individual identities while acting in concert.
Reinforcing fibers (carbon, glass or synthetic). The high tensile strength of the fiber is used to handle the loads in the hoop, axial, flexural, compression, & shear
Polymeric matrix (epoxy, vinyl ester, urethane). Matrix material binds the fibers into shapes and provides bond strength to substrates for load transfer.
Composites can be designed to share the loads & stresses with the host pipe, tank or concrete structure. Composites can also be designed to neglect the host strength of the host pipe, tank or structure for internal corrosion or erosion reinforcements needs.