A review on the bond behavior of FRP NSM systems in concrete

•A review on the bond behavior of FRP NSM systems in concrete was presented.•A database of pullout tests with FRP NSM systems in concrete was gathered, presented and analyzed.•Database was used to evaluate the accuracy of ACI 4402R-08 and HB 305-2008.•The results showed that both guidelines’ formula...

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Bibliographic Details
Published in:Construction & building materials 2015-09, Vol.93, p.1157-1169
Main Authors: Coelho, Mário R.F., Sena-Cruz, José M., Neves, Luís A.C.
Format: Article
Language:English
Subjects:
Analysis
Bond
Concrete
FRP
Mechanical properties
NSM
Polymers
Review
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Summary:•A review on the bond behavior of FRP NSM systems in concrete was presented.•A database of pullout tests with FRP NSM systems in concrete was gathered, presented and analyzed.•Database was used to evaluate the accuracy of ACI 4402R-08 and HB 305-2008.•The results showed that both guidelines’ formulations need to be upgraded. This paper presents a review of current knowledge on the bond behavior of fiber reinforced polymer (FRP) systems inserted in the cover of concrete elements, commonly known as the near-surface mounted technique (NSM). In the first part, by studying the physics of the phenomenon, the typical failure modes, the most common bond tests and two of the most important design guidelines for FRP NSM systems are introduced. In the second part, a database of bond tests composed by 431 records is presented and the accuracy of existing design guidelines is assessed with this data. Lastly, the formulations proposed by these design guidelines are recalibrated based on the experimental results in the database.
ISSN:0950-0618
DOI:10.1016/j.conbuildmat.2015.05.010