<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Although fiber-reinforced polymers (FRPs) have achieved increasing popularity in strengthening concrete structures and reinforcing new ones, there is to date insufficient knowledge about their long-term behavior. The long-term properties of FRPs specified in design codes lead to the low utilization capacity of these materials and are not supposed to be correct according to the actual behavior of structures reinforced with FRPs after 20 or 30 years of their use. Environmental impact reduction factors limit the mechanical properties of FRP composites in a range from 0.95 for CFRP to 0.5 for GFRP; the creep rupture factor is from 0.9 to 0.2. The paper summarizes previous research and experimental studies on the long-term properties of FRP reinforcements and also their comparison with the actual structures in which this reinforcement has been used; it presents the first part of an experimental investigation with comparative calculations.</p></abstract>

Although fiber-reinforced polymers (FRPs) have achieved increasing popularity in strengthening concrete structures and reinforcing new ones, there is to date insufficient knowledge about their long-term behavior. The long-term properties of FRPs specified in design codes lead to the low utilization capacity of these materials and are not supposed to be correct according to the actual behavior of structures reinforced with FRPs after 20 or 30 years of their use. Environmental impact reduction factors limit the mechanical properties of FRP composites in a range from 0.95 for CFRP to 0.5 for GFRP; the creep rupture factor is from 0.9 to 0.2. The paper summarizes previous research and experimental studies on the long-term properties of FRP reinforcements and also their comparison with the actual structures in which this reinforcement has been used; it presents the first part of an experimental investigation with comparative calculations.

Durability of FRP Reinforcements and Long-Term Properties

Dept. of Concrete Structures and Bridges, Faculty of Civil Engineering

Slovak University of Technology in Bratislava

Slovak Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Durability of FRP Reinforcements and Long-Term Properties"}

Although fiber-reinforced polymers (FRPs) have achieved increasing popularity in strengthening concrete structures and reinforcing new ones, there is to date...

Durability of FRP Reinforcements and Long-Term Properties

Publié en ligne: 06 juil. 2020

Pages: 50 - 55

DOI: https://doi.org/10.2478/sjce-2020-0015

Mots clés
GFRPreinforcement, Long-term properties, Creep-rupture, Long-term reduction factors

© 2020 Katarína Gajdošová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Durability of FRP Reinforcements and Long-Term Properties

Publié en ligne: 06 juil. 2020

Pages: 50 - 55

DOI: https://doi.org/10.2478/sjce-2020-0015

Mots clésGFRPreinforcement, Long-term properties, Creep-rupture, Long-term reduction factors

© 2020 Katarína Gajdošová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
GFRPreinforcement, Long-term properties, Creep-rupture, Long-term reduction factors