A new composite for external reinforcement: Steel cord reinforced polymer

SRG/SRP–concrete bond–slip laws for externally strengthened RC beams

“…In fact, for the FRP systems the damage usually involved the concrete substrate, whereas for the SRG and SRP systems two different failure mechanisms were observed during the tests: shearing within the concrete occurred with SRP reinforcement, whereas SRG reinforcement failed by debonding in the layer grout. Furthermore, the SRP system behaved stronger and stiffer than FRP systems, with a short inelastic branch in the stress-strain relationship [14,15].…”

“…Scientific works on SRG and SRP systems showed the potentialities of these innovative composite materials in improving structural performance of concrete elements, and at the same time, their difference with respect to FRP, particularly in terms of bond behavior [14,15]. In fact, for the FRP systems the damage usually involved the concrete substrate, whereas for the SRG and SRP systems two different failure mechanisms were observed during the tests: shearing within the concrete occurred with SRP reinforcement, whereas SRG reinforcement failed by debonding in the layer grout.…”

“…To this end, some shear tests and numerical analyses were carried out on cement based strengthening systems [13,14,26,27]. In particular, the bond performance of SRG and SRP systems was investigated by Matana et al [13] and Figeys et al [14] through the characterization of constituent materials and direct shear tests. However, up to day, any full bond-slip relationship was proposed and standardized.…”

3D FE Analysis of RC Beams Externally Strengthened with SRG/SRP Systems

“…This new composite material consists of an unidirectional Ultra High Tensile Steel Strength (UHTSS) fabric/strip which can be embedded in an inorganic matrix (SRG: Steel Reinforced Grout) or in an organic matrix (SRP: Steel Reinforced Polymer). These systems are capable of ensuring the same advantages of FRP strengthening systems, in terms of easiness of application, low invasiveness, and reduced intervention time, but with a lower cost, better fire resistance, and a higher compatibility with existing structures, compared to FRP materials [9,10]. The properties and potential applications of these new materials have been analyzed in some experimental investigations [11][12][13][14][15][16][17][18][19][20][21][22], but few of the studies are concerning the numerical modeling of structural elements strengthened with them [23].…”

Ultra-high frequency induction welded process of reinforcement steel

“…Figeys et al [2] reported that steel cord reinforced polymer (SCRP) can be used as external reinforcement. It consists of thin high-strength steel fibers embedded in a polymer matrix.…”