An Ezperimental Study on Mechanical Properties of Plastic-pipe Confined Concrete
Plastic-pipe confined concrete (PPC) is a composite system that is obtained by filling concrete into & plastic pipe. PPC aims at piers exposed to the tidal zone or the air-earth zone in marine and saline environments, and protects them from salt damages by isolating them from the aggressive substances and eliminating the zones of the concrete structure. Ultimate strength, stress-strain curve and ductility of PPC and effects of plastic-pipe thickness, the compressive strength of core concrete (fcu) on them were investigated in this paper. Results indicate: (1) The ultimate axial strain of PPC is 1.415～5.540 times higher than the common concrete, meanwhile, the strain energy E of PPC is 14.8～ 38.8 times higher than the common concrete. (2) The pipe thickness and fcu have a significant effect on the onset behavior and post-peak behavior of the stress-strain curves and the ultimate strength of PPC. (3) The ductility ratio of PPC greatly increases with the increase of pipe thickness, and decreases with the increase of fcu.
plastic-pipe confined concrete PVC pipe strength stress-strain curve ductility toughness
Junyan Wang Yang Quanbing
Research Lab of Materials Engineering, Tongji University Shanghai 200092, China Key Laboratory of Advanced Civil Engineering Materials of Education Ministry, Tongji University Shan
国际会议
6th Asian Symposium on Polymers in Concrete(第六届亚洲聚合物混凝土国际会议)
上海
英文
107-117
2009-10-29（万方平台首次上网日期，不代表论文的发表时间）