Bond Performance of Near-Surface-Mounted FRP Bars

2011 ◽  
Vol 15 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Shehab M. Soliman ◽  
Ehab El-Salakawy ◽  
Brahim Benmokrane
Keyword(s):  
Near Surface ◽  
Bond Performance ◽  
Near Surface Mounted ◽  
Frp Bars

Research on Adhesive Property of Reinforced Concrete Sructure Strengthened with Near-Surface Mounted FRP Bars

2013 ◽  
Vol 351-352 ◽  
pp. 980-985
Author(s):  
Yong Feng Xu ◽  
Wei Tong Guo ◽  
Teng Fei He
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Beams ◽  
Ultimate Bearing Capacity ◽  
Adhesive Property ◽  
Calculation Formula ◽  
Near Surface ◽  
Near Surface Mounted ◽  
Frp Bars ◽  
At Home

Now concrete beams reinforced with near surface mounted FRP bars has been researched at home and abroad. This article research the Bearing capacity of concrete beams reinforced with near surface mounted FRP bars by test, and also, Immunobead binding test, infer the calculation formula of ultimate bearing capacity with near surface mounted some bars base on the the single bar.

Mechanical Behavior for RC Beams Strengthened with Near-Surface-Mounted Bars Considering Effect of Secondary Loading

2014 ◽  
Vol 638-640 ◽  
pp. 1360-1364
Author(s):  
Hai Xia Zhang ◽  
Jia Wei Pei ◽  
Lu Yuan He
Keyword(s):  
Failure Modes ◽  
Concrete Beams ◽  
Load Level ◽  
Rc Beams ◽  
Near Surface ◽  
Initial Load ◽  
Bond Property ◽  
Near Surface Mounted ◽  
Frp Bars ◽  
Strengthening Method

Compared with other strengthening methods, NSM FRP bars strengthening method has obvious advantages in bond property and fire prevention performance. In accordance with current experimental study and the theory of concrete beams strengthened in bending with FRP are introduced, and the effect of FRP bars strengthening quantity on failure modes of reinforcement beams and the initial load level influence on the ultimate bearing capacity are analyzed. It provides a basis for further research and application in China.

scholarly journals EXPERIMENTAL STUDY OF THE INFLUENCE OF ADHESIVE PROPERTIES AND BOND LENGTH ON THE BOND BEHAVIOUR OF NSM FRP BARS IN CONCRETE

2016 ◽  
Vol 22 (6) ◽  
pp. 808-817 ◽  
Author(s):  
Lluís TORRES ◽  
Ibrahim Attia SHARAKY ◽  
Cristina BARRIS ◽  
Marta BAENA
Keyword(s):  
Bond Length ◽  
Load Capacity ◽  
Experimental Studies ◽  
Adhesive Properties ◽  
Bond Behaviour ◽  
Near Surface ◽  
Bond Performance ◽  
Pull Out ◽  
Key Factor ◽  
Frp Bars

The near-surface mounted (NSM) fibre reinforced polymer (FRP) technique is a relatively recent system for strengthening concrete structures. Bond is a key factor in its behaviour, and is affected by many factors whose influence can only be tested through experimental studies. In this study, the modified pull-out test was used to study the effect of epoxy properties and bond length on the behaviour of NSM FRP bars. Three epoxy types, two FRP materials (carbon and glass) and four bond lengths (6db, 12db, 24db and 30db) are used. The load capacity, slips at the loaded end and free end and average bond stress are all analysed. The test results indicate that the role of epoxy properties appear to be a key factor in bond performance in the NSM FRP strengthening technique, and that their effect varies depending on bond length and FRP properties.

Flexural behaviour of concrete beams strengthened with near surface mounted fibre reinforced polymer bars

2010 ◽  
Vol 37 (10) ◽  
pp. 1371-1382 ◽  
Author(s):  
Shehab M. Soliman ◽  
Ehab El-Salakawy ◽  
Brahim Benmokrane
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Near Surface ◽  
Modes Of Failure ◽  
Reinforced Polymer ◽  
External Reinforcement ◽  
Fibre Reinforced Polymer ◽  
Near Surface Mounted ◽  
Frp Bars

Fibre reinforced polymer (FRP) composite materials have been used as internal and external reinforcement for concrete structures. Flexural strengthening of concrete elements using near surface mounted (NSM)–FRP materials are a promising technology. This research is designed to investigate the behaviour of reinforced concrete beams strengthened in flexure with NSM–FRP bars. A total of 20 reinforced concrete beams were tested. Different parameters including internal steel reinforcement ratio, type of NSM–FRP bars, FRP bar diameter, bonded length, and groove size were investigated in this research. Test results showed that the use of NSM–FRP bars is effective in increasing the flexural capacity of concrete beams. In addition, a nonlinear 3D finite element (FE) analysis was used to numerically simulate the behaviour of the test beams. Comparisons between the FE predictions and experimental results showed very good agreement in terms of the load−deflection and load−strain relationships, ultimate capacities, and modes of failure for the tested beams.

Reliability-Based Assessment of Bond Strength Models for Near-Surface Mounted FRP Bars and Strips to Concrete

2021 ◽  
pp. 114132
Author(s):  
Reza Aghamohammadi ◽  
Kourosh Nasrollahzadeh ◽  
Amir Mofidi ◽  
Peter Gosling
Keyword(s):  
Bond Strength ◽  
Near Surface ◽  
Near Surface Mounted ◽  
Strength Models ◽  
Frp Bars
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