LCC-based identification of geographical locations suitable for using stainless steel rebars in reinforced concrete girder bridges

A lot of existing reinforced concrete girder bridges appeared cracks in the service phase. Because of the beam's cracks existing, the sectional bending stiffness of the beam decreased. It would reduce the structure's bearing capacity, so the bridges' structure performance urgently needs to be assessed by effective methods, so as to study further measures. In this paper, based on the indoor model test results of four pieces of model beams, regression analysis of the crack characteristics parameters and test's load-displacement curves has been carried out. The relationship between crack characteristics parameters and girder bridge's bending stiffness has been established. The qualitative assessment of structure crack's appearance inspection is transmitted to quantitative assessment, so it will make the assessment more objective and scientific.

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The estimation of seismic performances of reinforced concrete girder bridges using nonlinear dynamic analysis

Tehnicki vjesnik - Technical Gazette ◽

10.17559/tv-20140909173504 ◽

2017 ◽

Vol 24 (2) ◽

Keyword(s):

Reinforced Concrete ◽

Dynamic Analysis ◽

Nonlinear Dynamic ◽

Nonlinear Dynamic Analysis ◽

Girder Bridges ◽

Concrete Girder

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Flexural behaviour of reinforced concrete beams repaired using a hybrid scheme with stainless steel rebars and CFRP sheets

Construction and Building Materials ◽

10.1016/j.conbuildmat.2020.120296 ◽

2020 ◽

Vol 265 ◽

pp. 120296

Author(s):

Md Abul Hasan ◽

Mitsuyoshi Akiyama ◽

Koya Kashiwagi ◽

Keisuke Kojima ◽

Long Peng

Keyword(s):

Stainless Steel ◽

Reinforced Concrete ◽

Concrete Beams ◽

Reinforced Concrete Beams ◽

Flexural Behaviour ◽

Hybrid Scheme ◽

Cfrp Sheets ◽

Steel Rebars

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Bond-Slip Behavior between Stainless Steel Rebars and Concrete

Materials ◽

10.3390/ma13040979 ◽

2020 ◽

Vol 13 (4) ◽

pp. 979 ◽

Cited By ~ 3

Author(s):

Margherita Pauletta ◽

Nicola Rovere ◽

Norbert Randl ◽

Gaetano Russo

Keyword(s):

Stainless Steel ◽

Reinforced Concrete ◽

Carbon Steel ◽

Service Life ◽

Failure Modes ◽

Concrete Structures ◽

Reinforced Concrete Structures ◽

Bond Behavior ◽

Steel Bars ◽

Steel Rebars

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.

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