Bond-Slip Behavior between Stainless Steel Rebars and Concrete

Materials

卷:13

Margherita Pauletta¹  Gaetano Russo¹  Nicola Rovere¹  Norbert Randl² 

[1] Polytechnic Department of Engineering and Architecture, University of Udine, Via delle Scienze, 206-33100 Udine, Italy;

[2] School of Civil Engineering and Architecture, Carinthia University of Applied Sciences, Villacher Str. 1, 9800 Spittal, Austria;

关键词: stainless steel;    reinforcing bars;    bond behavior;    tensile concrete;    experimental tests;   

DOI  :  10.3390/ma13040979

来源: DOAJ

【 摘 要 】

Maintenance of reinforced concrete structures is a prevailing topic, especially with regard to lifeline structures and bridges, many of which are now designed with a service life beyond 100 years. Reinforcement made of ordinary (carbon) steel may corrode in aggressive environments. Stainless steel, being much more resistant to corrosion, is a valid solution to facilitate the protection of the works, increasing the service life and reducing the need for repair and maintenance. Despite the potential for stainless steel to reduce maintenance costs, studies investigating the influence of stainless steel on the behavior of reinforced concrete structures are limited. This study investigated the bond behavior of stainless steel rebars by means of experimental tests on reinforced concrete specimens with different concrete cover thicknesses, concrete strengths, and bar diameters. In each case, identical specimens with carbon steel reinforcement were tested for comparison. The failure modes of the specimens were examined, and a bond stress−slip relationship for stainless steel bars was established. This research shows that the bond behavior of stainless steel rebars is comparable to that of carbon steel bars.

【 授权许可】

Unknown