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论文类型：会议论文

发表时间：2010-01-01

收录刊物：CPCI-S

页面范围：399-402

摘要：Self-Stressing Concrete (SSC) is a new type of high performance cementitious composite with self-expansive performance and high tensile resistance. It can be used as a joint material in continuous bridge because when SSC is restrained by steel bars and other terminal conditions, it can create chemical prestressing force to enhance the cracking moments of the continuous beams. For purpose of utilizing the properties of SSC, experiment studies of 8 simply-supported-to-continuous T-beams with SSC layers are carried out firstly in this paper. Secondly, based on the model experiments, flexural performance of the beams reinforced by SSC layers is investigated. The test results obviously indicate that the composite SSC-RC continuous beams enhance the crack moment by 51.4%similar to 121.0% compared with conventional concrete continuous beams. It is concluded that flexural performance of continuous T-beams strengthened by SSC is more greatly improved than that strengthened by conventional concrete.