A Study on Durability Performance of Unbonded Prestressed Concrete Beam 

Shasha DENG 

School of Civil Engineering, Chongqing Jiaotong University, Chongqing, 400074, CHINA 

Abstract: Unbonded prestressed concrete members can not only play the role of prestressed tendons to improve the performance of the concrete structure, but also make the structure design more reasonable and cost saving. However, compared with bonded prestressed concrete structure comparison, unbonded prestressed concrete structure is more prone to corrosion damage caused by structural durability failure to use security structure lay hidden. Therefore, in this paper, the mechanical properties of the non bonded prestressed concrete after corroded are studied, and the mechanical properties of the non bonded prestressed tendons after corroded are studied by the static tensile test. 

Keywords: Vertically irregular frame structure; Durability; Loss of corrosion