PSI - Issue 44

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000–000

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ScienceDirect

Procedia Structural Integrity 44 (2023) 942–949

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. Abstract Fiber-reinforced polymer composites, due to their exceptional lightweight and strength characteristics, are now widely used to strengthen reinforced concrete or masonry structures. Among many applications, they are used as anchorage systems using preformed pultruded bars or high-strength fiber ropes to be impregnated in situ. In both cases, the anchoring part is a bar-type dowel component inserted into holes filled with a binder or adhesive material. One of the lesser-studied issues of their use is the pull-out strength of the anchorage system. It depends on several factors, such as the type of substrate, the anchorage bar diameter, the bonding agent, the anchorage length, etc. This paper summarizes the anchorage mechanism of GFRP bars through the analysis of several experimental data. The shortcomings of the current state of knowledge and some useful recommendations for further studies are presented. Thus, the paper is aimed at contributing to a better evaluation of the effectiveness of anchorages in FRP strengthening systems, and in particular of the GFRP bars used for anchoring fiber meshes and fabrics to prevent the overturning of infill walls in reinforced concrete buildings or walls in masonry buildings. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy Keywords: GFRP bars, anchorage systems, pull-out tests, concrete structures, FRP strengthening systems 1. Introduction Reinforced concrete is threatened by the deterioration of its components over time, resulting in a reduction in its load-bearing capacity. One of the traditional solutions to strengthen concrete structures is the use of steel bars post installed in holes with mortar filling. A more recent solution is the use of FRP bars. XIX ANIDIS Conference, Seismic Engineering in Italy The capacity of GFRP anchors in concrete and masonry structures Guadagnuolo M. a , Faella G. a *, Frunzio G. a , Massaro L. a , Brigante D. b a Department of Architecture and Industrial Design, University of Campania Luigi Vanvitelli, Via San Lorenzo, Aversa 81031, Italy b Olympus srl, Via Riviera di Chiaia, 118, Napoli, NA, 80122, Italy Abstract Fiber-reinforced polymer composites, due to their exceptional lightweight and strength characteristics, are now widely used to strengthe reinforced con rete r masonry s ructures. Among many applications, they are us d as anchorage systems using p form d pultruded bars o high-strength fiber rop to be impreg ated in si u. In both cases, the anchoring part i a bar-type dowel com onent inserted into holes filled with a binder or adhesive material. One of the le ser-studied issues of their use is th pull-out strength of th anchorage system. It depends on several factors, such as th type of substrate, the anchorage ba diame er, the bonding agent, the anchorage length, etc. Thi pap r summarizes the nc orag mechanism of GFRP bars through he analysis of several exp rimental data. The shortcomings of the current tate of knowledge and some useful recommendations for further tudi s a e pres nted. Thus, the paper is ai ed at contrib ting to better eva uation of the ffectiven ss of anchorages in FRP strengthening sy tems, and in particular of the GFRP bars used for anchoring fiber mesh s and fabrics to prevent the overturni of infill walls in reinforced concrete buildings or wall in mas nry build s. © 2022 The Authors. Publ sh d by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review u der re ponsibility of scientific committee of the XIX ANIDIS C nference, Seismic Engineering in Italy K ywords: GFRP bars, anchorage s stems, pull-out tests, concrete structures, FRP strengtheni g systems 1. Introduction Reinforced concrete is threatened by the deterioration of its components over time, resulting in a reduction in its load-bearing capa ity. One of the traditional solutions to strengthen concrete structures i the use of steel bars pos - install d i holes w h mortar filling. A more recent solution is the use of FRP bars. XIX ANIDIS Conference, Seismic Engineering in Italy The capacity of GFRP anchors in concrete and masonry structures Guadagnuolo M. a , Faella G. a *, Frunzio G. a , Massaro L. a , Brigante D. b a Department of Architecture and Industrial Design, University of Campania Luigi Vanvitelli, Via San Lorenzo, Aversa 81031, Italy b Olympus srl, Via Riviera di Chiaia, 118, Napoli, NA, 80122, Italy

* Corresponding author. Tel.: +39-081-5010822; fax: +39-081-5010823. E-mail address: giuseppe.faella@unicampania.it * Corresponding author. Tel.: +39-081-5010822; fax: +39-081-5010823. E-mail address: giusepp .faella@unicampania.it

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the XIX ANIDIS Conference, Seismic Engineering in Italy. 10.1016/j.prostr.2023.01.122