Investigation of Interfacial Bonding Properties of Polyurethane Concrete and Cement Concrete/Steel Reinforcement

To solve the problem that repair material of bridge's expansion joint anchorage area is prone to debonding from other bridge components, polyurethane concrete was designed and prepared, bonding performance tested by bond splitting test, direct shear oblique steel reinforcement pull-out test. The results show interfacial strength cement can be improved increasing roughness. increases up 91.4%, 55.2%, 28.9%. between are minimally influenced temperature. An increase in diameter or length bonded ultimate reinforcement. Polyurethane a novel composite with excellent reinforcement, which widely used practical projects, such as repairing areas future.