Durability study on CFRP wrapped concrete beams under aging conditions
by Woraphot Prachasaree, P.V. Vijay, Hota V.S. GangaRao
International Journal of Structural Engineering (IJSTRUCTE), Vol. 2, No. 3, 2011

Abstract: The main purpose of this paper is to study the performance and durability of concrete beams with wrapped carbon fibre reinforced polymer (CFRP) under accelerated and natural aging. Variation in mechanical properties of CFRP wrapped concrete beams due to aging through: 1) water immersion, salt and alkaline solution immersion at elevated temperatures (room, 43°C and 60°C); 2) natural constant 20°C; 3) outside weathering was studied. Different parameters evaluated during beam bending tests are: maximum load (moment), deflections, crack width, and deformability factor. Results of experimental/theoretical load (moment) ratios indicated a trend of reduction in load (moment) capacity with increasing temperatures. The ratios of load at each deflection limit to maximum load of beams aged in water decreased with both temperature and aging duration. In addition, the average deformation factors decreased with increase in temperature and aging duration. Accelerated and natural aging results were compared on the basis of stress-temperature-time superposition principles. Based on the correlation of natural aging to accelerated aging, 12.73% strength reduction in carbon wraps bonded to concrete beams is equivalent to about 77.5 years.

Online publication date: Tue, 30-Sep-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Structural Engineering (IJSTRUCTE):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com