Characterization and Design of Multilayer PBO FRCM Composite Reinforcements for Concrete Structures
Publication: Journal of Composites for Construction
Volume 25, Issue 6
Abstract
Fiber-reinforced cementitious matrix (FRCM) composites can be preferred to other techniques to strengthen reinforced concrete (RC) members. Due to the limited cross-sectional area of textiles in FRCM, multilayer composites are often needed to provide adequate strength increase. Although multilayer FRCM composites have been already employed, quite limited research is available regarding the bond behavior of multilayer FRCM–concrete joints. Direct shear tests of FRCM–concrete joints and bending tests of FRCM-strengthened RC beams showed that when one or two textile layers are employed, debonding at the matrix–fiber interface generally occurs. When more than two layers are employed, detachment of the FRCM strip was observed in FRCM-strengthened RC beams, while limited studies of corresponding FRCM bond behavior were performed. The bond behavior of a multilayer bidirectional polyparaphenylene benzobisoxazole (PBO) FRCM composite applied onto a concrete substrate is investigated in this paper. Single-lap direct shear tests of PBO FRCM–concrete joints comprising two or four textile layers are performed, along with tensile tests of bare textile strips and single-layer FRCM coupons. Tests were conducted in both textile directions. The results obtained provide fundamental information on the effect of the textile direction and number of layers to be considered when designing the reinforcing system.
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Acknowledgments
The experimental tests presented in this paper were conducted in the Laboratorio Prove Materiali of the Politecnico di Milano, Italy. The financial support of A2A Spa is gratefully acknowledged. Ruregold Srl is gratefully acknowledged for providing the composite material.
References
ACI (American Concrete Institute). 2020. Guide to design and construction of externally bonded fabric-reinforced cementitious matrix and steel-reinforced grout systems for repair and strengthening of concrete structures. ACI 549.4R-20. ACI Committee 549. Farmington Hills, MI: ACI.
Aljazaeri, Z. R., and J. J. Myers. 2018. “Flexure performance of RC one-way slabs strengthened with composite materials.” J. Mater. Civ. Eng. 30 (7): 04018120. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002299.
Arboleda, D. 2014. “Fabric reinforced cementitious matrix (FRCM) composites for infrastructure strengthening and rehabilitation: Characterization methods.” Ph.D. thesis, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Miami.
Askouni, P. D., and C. G. Papanicolaou. 2017. “Experimental investigation of bond between glass textile reinforced mortar overlays and masonry: The effect of bond length.” Mater. Struct. 50 (2): 1–15. https://doi.org/10.1617/s11527-017-1033-7.
Babaeidarabad, S., G. Loreto, and A. Nanni. 2014. “Flexural strengthening of RC beams with an externally bonded fabric-reinforced cementitious matrix.” J. Compos. Constr. 18 (5): 04014009. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000473.
Bakis, C. E., L. C. Bank, V. L. Brown, E. Cosenza, J. F. Davalos, J. J. Lesko, A. Machida, S. H. Rizkalla, and T. C. Triantafillou. 2002. “Fiber-reinforced polymer composites for construction—State-of-the-art review.” J. Compos. Constr. 6 (2): 73–87. https://doi.org/10.1061/(ASCE)1090-0268(2002)6:2(73).
Banholzer, B. 2004. “Bond behaviour of a multi-filament yarn embedded in a cementitious matrix.” Ph.D. thesis, Faculty of Civil Engineering, RWTH Aachen Univ.
Bellini, A., M. Bovo, and C. Mazzotti. 2019. “Experimental and numerical evaluation of fiber-matrix interface behaviour of different FRCM systems.” Composites, Part B 161: 411–426. https://doi.org/10.1016/j.compositesb.2018.12.115.
Caggegi, C., F. G. Carozzi, S. De Santis, F. Fabbrocino, F. Focacci, Ł Hojdys, E. Lanoye, and L. Zuccarino. 2017. “Experimental analysis on tensile and bond properties of PBO and aramid fabric reinforced cementitious matrix for strengthening masonry structures.” Composites, Part B 127: 175–195. https://doi.org/10.1016/j.compositesb.2017.05.048.
Calabrese, A. S., P. Colombi, and T. D’Antino. 2019. “Analytical solution of the bond behavior of FRCM composites using a rigid-softening cohesive material law.” Composites, Part B 174: 107051. https://doi.org/10.1016/j.compositesb.2019.107051.
Calabrese, A. S., T. D’Antino, and P. Colombi. 2021. “Experimental and analytical investigation of PBO FRCM-concrete bond behavior using direct and indirect shear test set-ups.” Compos. Struct. 267: 113672. https://doi.org/10.1016/j.compstruct.2021.113672.
Campanini, D., H. A. Hadad, C. Carloni, C. Mazzotti, and A. Nanni. 2019. “Mechanical characterization of SRG composites according to AC434.” Key Eng. Mater. 817: 458–465.
Carloni, C. 2014. “Analyzing bond characteristics between composites and quasi-brittle substrates in the repair of bridges and other concrete structures.” In Chap. 3 in Advanced composites in bridge construction and repair, edited by Y. J. Kim, 61–93. Sawston: Woodhead Publishing.
Carozzi, F. G., and C. Poggi. 2015. “Mechanical properties and debonding strength of fabric reinforced cementitious matrix (FRCM) systems for masonry strengthening.” Composites, Part B 70: 215–230. https://doi.org/10.1016/j.compositesb.2014.10.056.
Carrara, P., D. Ferretti, and F. Freddi. 2013. “Debonding behavior of ancient masonry elements strengthened with CFRP sheets.” Composites, Part B 45 (1): 800–810. https://doi.org/10.1016/j.compositesb.2012.04.029.
CEN (European Committee for Standardization). 1999. Methods of test for mortar for masonry. Determination of flexural and compressive strength of hardened mortar. EN 1015-11:1999. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2004. Eurocode 2: Design of concrete structures—Part 1-1: General rules and rules for buildings. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2009a. Plastics—Determination of tensile properties. Part 5: Test conditions for unidirectional fibre-reinforced plastic composites. EN ISO 527-5:2009. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2009b. Testing hardened concrete—Part 6: Tensile splitting strength of test specimens. EN 12390-6:2009. Brussels, Belgium: CEN.
CEN (European Committee for Standardization). 2019. Testing hardened concrete—Part 3: Compressive strength of test specimens. EN 12390-3:2019. Brussels, Belgium: CEN.
CNR (National Research Council). 2018. Guide for the design and construction of externally bonded fibre reinforced inorganic matrix systems for strengthening existing structures. CNR-DT 215/2018. Rome: CNR.
CSLLPP-Servizio Tecnico Centrale. 2019. Linee guida per la identificazione, la qualificazione ed il controllo di accettazione di compositi fibrorinforzati a matrice inorganica (FRCM) da utilizzarsi per il consolidamento strutturale di costruzioni esistenti. Rome: CSLLPP-Servizio Tecnico Centrale.
D’Ambrisi, A., L. Feo, and F. Focacci. 2013. “Experimental analysis on bond between PBO-FRCM strengthening materials and concrete.” Composites, Part B 44 (1): 524–532. https://doi.org/10.1016/j.compositesb.2012.03.011.
D’Ambrisi, A., and F. Focacci. 2011. “Flexural strengthening of RC beams with cement-based composites.” J. Compos. Constr. 15 (5): 707–720. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000218.
D’Antino, T., G. Carozzi, P. Colombi, and C. Poggi. 2017. “A new pull-out test to study the bond behavior of fiber reinforced cementitious composites.” Key Eng. Mater. 747: 258–265. https://doi.org/10.4028/www.scientific.net/KEM.747.258.
D’Antino, T., F. G. Carozzi, P. Colombi, and C. Poggi. 2018. “Out-of-plane maximum resisting bending moment of masonry walls strengthened with FRCM composites.” Compos. Struct. 202: 881–896.
D’Antino, T., F. Focacci, C. Carloni, and L. H. Sneed. 2020. “Relationship between the effective strain of FRCM-strengthened RC beams and the debonding strain of direct shear tests.” Eng. Struct. 216: 1–16.
D’Antino, T., and C. Papanicolaou. 2017. “Mechanical characterization of textile reinforced inorganic-matrix composites.” Composites, Part B 127: 78–91. https://doi.org/10.1016/j.compositesb.2017.02.034.
D’Antino, T., and C. Papanicolaou. 2018. “Comparison between different tensile test set-ups for the mechanical characterization of inorganic-matrix composites.” Constr. Build. Mater. 171: 140–151. https://doi.org/10.1016/j.conbuildmat.2018.03.041.
D’Antino, T., and M. A. Pisani. 2017. “Evaluation of the effectiveness of current guidelines in determining the strength of RC beams retrofitted by means of NSM reinforcement.” Compos. Struct. 167: 166–177. https://doi.org/10.1016/j.compstruct.2017.01.070.
D’Antino, T., and C. Poggi. 2019. “Stress redistribution in glass fibers of G-FRCM composites.” Key Eng. Mater. 817: 520–527. https://doi.org/10.4028/www.scientific.net/KEM.817.520.
D’Antino, T., L. H. Sneed, C. Carloni, and C. Pellegrino. 2015. “Influence of the substrate characteristics on the bond behavior of PBO FRCM-concrete joints.” Constr. Build. Mater. 101: 838–850. https://doi.org/10.1016/j.conbuildmat.2015.10.045.
De Lorenzis, L., and A. Nanni. 2001. “Shear strengthening of reinforced concrete beams with near-surface mounted fiber-reinforced polymer rods.” Struct. J. 98 (1): 60–68.
De Santis, S., and G. de Felice. 2015. “Tensile behaviour of mortar-based composites for externally bonded reinforcement systems.” Composites, Part B 68: 401–413. https://doi.org/10.1016/j.compositesb.2014.09.011.
Donnini, J., and V. Corinaldesi. 2017. “Mechanical characterization of different FRCM systems for structural reinforcement.” Constr. Build. Mater. 145: 565–575. https://doi.org/10.1016/j.conbuildmat.2017.04.051.
Donnini, J., S. Spagnuolo, and V. Corinaldesi. 2019. “A comparison between the use of FRP, FRCM and HPM for concrete confinement.” Composites, Part B 160: 586–594. https://doi.org/10.1016/j.compositesb.2018.12.111.
Elghazy, M., A. El Refai, U. Ebead, and A. Nanni. 2018. “Corrosion-damaged RC beams repaired with fabric-reinforced cementitious matrix.” J. Compos. Constr. 22 (5): 1–13.
fib (Federation Internationale du Beton). 2013. fib model code for concrete structures 2010. Lausanne, Switzerland: Ernst & Sohn.
fib (Federation Internationale du Beton). 2019. Externally applied FRP reinforcement for concrete structures. fib Bulletin 90, edited by S. Matthys and T. Triantafillou. Lausanne, Switzerland: fib.
Focacci, F., T. D’Antino, and C. Carloni. 2020. “The role of the fiber–matrix interfacial properties on the tensile behavior of FRCM coupons.” Constr. Build. Mater. 265: 120263. https://doi.org/10.1016/j.conbuildmat.2020.120263.
Foraboschi, P. 2016. “Effectiveness of novel methods to increase the FRP-masonry bond capacity.” Composites, Part B 107: 214–232. https://doi.org/10.1016/j.compositesb.2016.09.060.
Gonzalez-Libreros, J. H., L. H. Sneed, T. D’Antino, and C. Pellegrino. 2017. “Behavior of RC beams strengthened in shear with FRP and FRCM composites.” Eng. Struct. 150: 830–842. https://doi.org/10.1016/j.engstruct.2017.07.084.
Hegger, J., M. Schneider, and C. Kulas. 2010. “Dimensioning of TRC with application to ventilated façade systems.” In Vol. 11 of Proc., Int. RILEM Conf. Material Science, edited by W. Brameshuber.
Hegger, J., N. Will, O. Bruckermann, and S. Voss. 2006. “Load–bearing behaviour and simulation of textile reinforced concrete.” Mater. Struct. 39 (8): 765–776. https://doi.org/10.1617/s11527-005-9039-y.
ICC-ES (International Code Council Evaluation Service). 2018. Acceptance criteria for masonry and concrete strengthening using fabric-reinforced cementitious matrix (FRCM) and steel reinforced grout (SRG) composite systems. AC434. Whittier, CA: ICC-ES.
Jabr, A., A. El-Ragaby, and F. Ghrib. 2017. “Effect of the fiber type and axial stiffness of FRCM on the flexural strengthening of RC beams.” Fibers 5 (2): 1–22.
Jung, K., K. Hong, S. Han, P. Jaekyu, and K. Jaehyun. 2015. “Prediction of flexural capacity of RC beams strengthened in flexure with FRP fabric and cementitious matrix.” Civ. Eng. Appl. Polym. Compos. 2015: 1–11.
Koutas, L. N., Z. Tetta, D. A. Bournas, and T. C. Triantafillou. 2019. “Strengthening of concrete structures with textile reinforced mortars: State-of-the-art review.” J. Compos. Constr. 23 (1): 1–20.
Lam, L., and J. G. Teng. 2003. “Design-oriented stress–strain model for FRP-confined concrete.” Constr. Build. Mater. 17 (6): 471–489. https://doi.org/10.1016/S0950-0618(03)00045-X.
Lignola, G. P., A. Prota, and G. Manfredi. 2012. “Numerical investigation on the influence of FRP retrofit layout and geometry on the in-plane behavior of masonry walls.” J. Compos. Constr. 16 (6): 712–723. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000297.
Loreto, G., L. Leardini, D. Arboleda, and A. Nanni. 2014. “Performance of RC slab-type elements strengthened with fabric-reinforced cementitious-matrix composites.” J. Compos. Constr. 18 (3): A4013003. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000415.
Mäder, E., S. Melcher, J. W. Liu, S. L. Gao, A. D. Bianchi, S. Zherlitsyn, and J. Wosnitza. 2007. “Adhesion of PBO fiber in epoxy composites.” J. Mater. Sci. 42 (19): 8047–8052. https://doi.org/10.1007/s10853-006-1311-1.
Nobili, A., and C. Signorini. 2017. “On the effect of curing time and environmental exposure on impregnated carbon fabric reinforced cementitious matrix (CFRCM) composite with design considerations.” Composites, Part B 112: 300–313. https://doi.org/10.1016/j.compositesb.2016.12.022.
Ombres, L. 2011. “Flexural analysis of reinforced concrete beams strengthened with a cement based high strength composite material.” Compos. Struct. 94 (1): 143–155. https://doi.org/10.1016/j.compstruct.2011.07.008.
Papanicolaou, C. G. 2016. “Applications of textile-reinforced concrete in the precast industry.” In Textile fibre composites in civil engineering, civil and structural engineering, edited by T. Triantafillou, 227–244. Sawston: Woodhead Publishing.
Papanicolaou, C. G., T. C. Triantafillou, M. Papathanasiou, and K. Karlos. 2008. “Textile reinforced mortar (TRM) versus FRP as strengthening material of URM walls: Out-of-plane cyclic loading.” Mater. Struct. 41 (1): 143–157. https://doi.org/10.1617/s11527-007-9226-0.
Peled, A., B. Mobasher, and A. Bentur. 2017. “Mechanical performance under static conditions.” In Textile reinforced concrete, 166–261. London: CRC Press.
Pellegrino, C., and C. Modena. 2002. “Fiber reinforced polymer shear strengthening of reinforced concrete beams with transverse steel reinforcement.” J. Compos. Constr. 6 (2): 104–111. https://doi.org/10.1061/(ASCE)1090-0268(2002)6:2(104).
Raoof, S. M., L. N. Koutas, and D. A. Bournas. 2016. “Bond between textile-reinforced mortar (TRM) and concrete substrates: Experimental investigation.” Composites, Part B 98: 350–361. https://doi.org/10.1016/j.compositesb.2016.05.041.
Raoof, S. M., L. N. Koutas, and D. A. Bournas. 2017. “Textile-reinforced mortar (TRM) versus fibre-reinforced polymers (FRP) in flexural strengthening of RC beams.” Constr. Build. Mater. 151: 279–291. https://doi.org/10.1016/j.conbuildmat.2017.05.023.
Rovero, L., S. Galassi, and G. Misseri. 2020. “Experimental and analytical investigation of bond behavior in glass fiber-reinforced composites based on gypsum and cement matrices.” Composites, Part B 194: 108051. https://doi.org/10.1016/j.compositesb.2020.108051.
Ruregold srl. 2019. “Technical datasheet of PBO-Mesh Gold 70/18.” Accessed December 20, 2020. https://www.ruregold.com/it/download/pbo-mesh-70-18-scheda-tecnica/.
Ruregold srl. 2020. “Technical datasheet of MX-PBO calcestruzzo.” Accessed December 20, 2020. https://www.ruregold.com/it/download/mx-pbo-calcestruzzo-scheda-tecnica/.
Signorini, C., A. Nobili, A. Sola, and M. Messori. 2020. “Designing epoxy viscosity for optimal mechanical performance of coated glass textile reinforced mortar (GTRM) composites.” Constr. Build. Mater. 233: 117325. https://doi.org/10.1016/j.conbuildmat.2019.117325.
Sneed, L. H., T. D’Antino, C. Carloni, and C. Pellegrino. 2015. “A comparison of the bond behavior of PBO-FRCM composites determined by double-lap and single-lap shear tests.” Cem. Concr. Compos. 64: 37–48.
Tetta, Z. C., L. N. Koutas, and D. A. Bournas. 2015. “Textile-reinforced mortar (TRM) versus fiber-reinforced polymers (FRP) in shear strengthening of concrete beams.” Composites, Part B 77: 338–348. https://doi.org/10.1016/j.compositesb.2015.03.055.
Triantafillou, T. 1998. “Strengthening of masonry structures using epoxy-bonded FRP laminates.” J. Compos. Constr. 2 (2): 96–104. https://doi.org/10.1061/(ASCE)1090-0268(1998)2:2(96).
Valluzzi, M. R. 2016. “Challenges and perspectives for the protection of masonry structures in historic centers: The role of innovative materials and techniques.” RILEM Tech. Lett. 1: 45–49. https://doi.org/10.21809/rilemtechlett.2016.10.
Verre, S. 2017. “Structural behaviour of reinforced concrete members strengthened with FRCM composites.” Ph.D. thesis, Dept. of Civil Engineering, Univ. of Calabria.
Younis, A., U. Ebead, and K. Shrestha. 2020. “Tensile characterization of multi-ply fabric-reinforced cementitious matrix strengthening systems.” Struct. Concr. 21: 713–723. https://doi.org/10.1002/suco.201900076.
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Received: Jan 25, 2021
Accepted: Jun 28, 2021
Published online: Aug 27, 2021
Published in print: Dec 1, 2021
Discussion open until: Jan 27, 2022
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