缓凝结预应力构件的试验研究

Study of Flexural Behavior of Concrete Beams Using Pre-grouted Prestressing Tendons

以环氧树脂为填充材料的缓凝结预应力体系由于其卓越的耐腐蚀性能和方便的施工工艺而受到广泛关注。对环氧树脂不同硬化阶段、普通钢筋不同配筋率情况下的缓凝结预应力构件进行试验,并与同条件下有粘结预应力构件和无粘结预应力构件的试验结果进行比较,从而为缓凝预应力体系的推广应用提供依据。

Pre-grouted prestressing tendons coated with special epoxy resin are attractived because its greater anti-corrosion property and easily operation.The study on concrete beams using pre-grouted prestressing tendons is made by using models with different epoxy resin hardening process and different ratio of reinforcement.At the same time,the study on unbonded and bonded by cement grouting is made by the same method.The results can be referred when pregrouted prestressing tendon is used.