Bond strength model for near-surface mounted (NSM) FRP bonded joints: Effect of concrete edge distance

2018 ◽  
Vol 201 ◽  
pp. 664-675 ◽  
Author(s):  
S.S. Zhang
Keyword(s):  
Bond Strength ◽  
Bonded Joints ◽  
Strength Model ◽  
Near Surface ◽  
Edge Distance ◽  
Near Surface Mounted

scholarly journals Effectiveness of Various Techniques Using FRP for the Strengthening of R. C. Beams with Tension Lap Splices

2019 ◽  
pp. 1-18
Author(s):  
Mohamed H. Makhlouf
Keyword(s):  
Bond Strength ◽  
Cross Section ◽  
Epoxy Adhesive ◽  
Experimental Program ◽  
Near Surface ◽  
Lap Splices ◽  
Lap Splice ◽  
Flexural Performance ◽  
Externally Bonded ◽  
Near Surface Mounted

This paper presents an experimental program conducted to investigate the flexural performance of RC beams with tension reinforcement lap splice strengthened using externally bonded FRP different techniques in splice region. The specimens were reinforced on the tension side with four deformed bars spliced at mid span. The tested beams are of 3200 mm total length and 250*120 mm cross section, tested in positive bending. The considered parameters were splice length, type of FRP (glass or carbon), strengthening techniques in splice region (externally confine strips around cross section, Near Surface Mounted technique "NSM" stirrups, externally bonded sheets or bars on the tension face, number of GFRP strips layers (one layer, two layers, and three layers), and shape of NSM stirrups (Box or U shape). No additional anchorage mechanism or bonding methodology was applied for the FRP strips on the concrete except the epoxy adhesive. The effect of these factors on the failure of modes, the ultimate load, the bond strength and that the ductility were investigated. The results indicated that all applied strengthening techniques were efficient in improving the bond strength of the lap splices, the ductility, and the load-deflection behavior of the tested beams, especially when strips were installed over the splice region. This study approved that NSM technique gave more prominent simplicity of employ.

Bond Strength of Near-Surface Mounted FRP Strip-to-Concrete Joints

2007 ◽  
Vol 11 (4) ◽  
pp. 401-409 ◽  
Author(s):  
Rudolf Seracino ◽  
Nicola M. Jones ◽  
M. S. Ali ◽  
Mark W. Page ◽  
Deric J. Oehlers
Keyword(s):  
Bond Strength ◽  
Near Surface ◽  
Near Surface Mounted ◽  
Concrete Joints

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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