Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Durability of High Strength Concrete Strengthened with Prestressed CFRP Under Wet-thermal Environments

HONG Lei;MA Teng-long;WANG Su-yan;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology;  
The failure patterns and bearing performances of high strength concrete specimens strengthened with prestressed carbon fiber reinforced polymer(CFRP)were studied by experiments under wet-thermal environment where the humidity was 98% and the temperatures were 20 ℃,40 ℃,60 ℃.The influences of different factors including prestressed degree,temperature and environment action time on durability of strengthened specimens were analyzed.The results show that the cracking loads and ultimate loads of specimens strengthened with prestress being 30% of tensile strength for prestressed CFRP decline in varying degrees after being subjected to wet-thermal environments.With rising of the environment temperature,the failure patterns change from bending shear failure to flexural failure.In addition,the overall adverse effects of wet-thermal environments on specimens strengthened with prestressed CFRP are greater than those on specimens strengthened without prestressed CFRP,and the adverse effect will be aggravated when prestress rises.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved