Material Characterization of FRP Pre-Cured Laminates Used in the Mechanically Fastened FRP Strengthening of RC Structures


The Mechanically Fastened-FRP (MF-FRP) strengthening system consists of pre-cured FRP laminates having high longitudinal bearing strength attached to the concrete surface using closely spaced steel fasteners in the form of nails or concrete wedge anchors. the connection depends on several parameters such as, the intrinsic laminates properties (tensile and bearing strength), diameter and effective embedment length of the fasteners, clamping force, presence and type of washer, presence and type of filler in the gaps between the FRP material, the fastener and accessories, and the concrete. This paper focuses on the material characterization of pultruded pre-cured laminate which was used as MF-FRP strengthening to retrofit and rehabilitate off-system bridges in Missouri, USA. Tensile tests, in the longitudinal and transverse direction of the laminate, were performed on full section and open hole coupons in order to characterize the material. Bearing tests, in the longitudinal and transverse direction of the laminate, were performed to determine the capacity of the unrestrained fastener-FRP-concrete connection.


Civil, Architectural and Environmental Engineering

Second Department

Mechanical and Aerospace Engineering


Arizona Cotton Research and Protection Council, Grant None

Keywords and Phrases

Flexural strengthening; Material characterization; Mechanically fastened FRP pre-cured laminates

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

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Publication Date

01 Oct 2005

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