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Journal of Polymer & Composites Original Research Special issue

Mechanical Performance and Material Properties of Nsm CFRP Polymer System

  1. G. Santhosh Kannan Department of Civil Engineering, Bharath Institute of Higher Education and Research
  2. M. HemaPriya Department of Civil Engineering, Bharath Institute of Higher Education and Research
  3. B. Vijaya Department of Civil Engineering, Dr. MGR Educational and Research Institute Maduravoyal
  4. J. Faney Department of Civil Engineering, Bharath Institute of Higher Education and Research

Abstract

Near-surface mounting systems are an advanced embedded technique application of CFRP composites in which the efficiency of the structure is mostly dominated by polymer matrix properties and interface stress transfer mechanisms. This review presents a holistic materials-based perspective on the experiment, analytical, and numerical studies conducted on the NSM-CFRP composite system, specifically on the behavior of the epoxy adhesive, interfacial behavior of composite–substrate system, and related structure–property relationships. The literature suggested that even strain distribution and load capacity can be increased with embedded CFRP reinforcement due to the better confinement and the reduction in debonding of concrete cover and reinforcement as compared to externally bonded systems. From the literature the most influential parameters towards the modeling of the interface are groove geometry, adhesive stiffness and thickness, CFRP surface morphology, anchorage detailing, and polymer time dependent phenomena of creep, shrinkage, environmental degradation. Furthermore, contemporary interface modeling methods based on cohesive zone theories as well as novel data-driven methods, are evaluated in terms of their capabilities to simulate the evolution of interfacial damage and composite response [1]. To summarize, this review demonstrates that NSM-CFRP systems can be considered as embedded polymer composites with high performance, and thus with profound implications for polymer science, composite engineering and sustainable infrastructure restoration.

Keywords

References (18)

  1. Tworzewski P, Bacharz K. Flexural Strengthening of Reinforced Concrete Beams Using Near-Surface Mounted (NSM) Carbon Fiber-Reinforced Polymer (CFRP) Strips with Additional Anchorage. Materials. 2025;18(11):2579. doi:10.3390/ma18112579
  2. Khol S, Seo SY, Van Tran H, Hanif MU. Shear Strengthening of RC Beams Using Partial-Length Near-Surface Mounted (PLNSM) CFRP Strips. International Journal of Concrete Structures and Materials. 2024;18(1). doi:10.1186/s40069-024-00727-3
  3. Faculty of Engineering, Department of Civil Engineering, The University of Jordan, Amman 11942, Jordan, Issa S, Ashteyat A, Department of Civil Engineering, College of Engineering in Al-Kharj, Prince Sattam Bin Abdulaziz University, 11942, Alkharj, Saudi Arabia, Faculty of Engineering, Department of Civil Engineering, The University of Jordan, Amman 11942, Jordan, Abdel-Jaber MT, et al. Shear Strengthening and Repairing of Reinforced Concrete T-Beam Exposed to high Temperature Using Near Surface Mounted Carbon Fiber (NSM–CFRP) Ropes. Engineered Science. 2024. doi:10.30919/es8d872
  4. Hemapriya M, et al. Experimental investigation on reinforced concrete beams retrofitted with synthetic wraps. In: Proceedings of the International Conference on Thermal Analysis and Energy Systems. 2022. Available from: elsevier.com/locate/matpr
  5. Fayed S, et al. Composite performance evaluation of NSM-CFRP composite systems using prestressed near-surface mounted CFRP rods. Materials. 2024;17(23). doi:10.3390/ma17235701.
  6. Al-zu’bi H, Abdel-Jaber MT, Katkhuda H. Flexural Strengthening of Reinforced Concrete Beams with Variable Compressive Strength Using Near-Surface Mounted Carbon-Fiber-Reinforced Polymer Strips [NSM-CFRP]. Fibers. 2022;10(10):86. doi:10.3390/fib10100086
  7. Hemapriya M, et al. Investigation on NSM-CFRP composite systems embedded with hybrid fiber-reinforced polymer laminates at the flexural zone. Mater Today Proc. 2021. Available from: elsevier.com/locate/matpr
  8. AL-Ameedee HS, Al-Khafaji HM. Improving the flexural behavior of RC beams strengthening by near-surface mounting. Journal of the Mechanical Behavior of Materials. 2022;31(1):701-709. doi:10.1515/jmbm-2022-0070
  9. El-Hacha R, Gaafar M. Composite performance evaluation of reinforced concrete beams using prestressed near-surface mounted CFRP bars. Compos Struct. 2017;163. doi:10.1016/j.compstruct.2016.12.044.
  10. Michałowska-Maziejuk D, Goszczyńska B. Effectiveness of NSM-CFRP composite systems using composite materials—an accelerated evaluation method. Materials. 2023;16(13):4847. doi:10.3390/ma16134847.
  11. Abadel A. Shear strengthening of deficient RC deep beams using NSM FRP system: Experimental and numerical investigation. Materials Science-Poland. 2024;42(1):140-157. doi:10.2478/msp-2024-0012
  12. Hemapriya M, et al. Experimental study on failure modes of NSM-CFRP externally embedded composite systems with multiple layers of FRP sheets. IOP Conf Ser Mater Sci Eng. 2021;2272:012022.
  13. Aruchamy K, Karuppusamy M, Krishnakumar S, Palanisamy S, Jayamani M, Sureshkumar K, et al. Enhancement of mechanical properties of hybrid polymer composites using palmyra palm and coconut sheath fibers: The role of tamarind shell powder. BioResources. 2024;20(1):698-724. doi:10.15376/biores.20.1.698-724
  14. Karuppiah G, Kuttalam KC, Palaniappan M, Santulli C, Palanisamy S. Multiobjective Optimization of Fabrication Parameters of Jute Fiber/Polyester Composites with Egg Shell Powder and Nanoclay Filler. Molecules. 2020;25(23):5579. doi:10.3390/molecules25235579
  15. Karthik, A, et, Mechanical and drilling parameters of natural-fiber-based composites (Journal of Composites Science, 2025) – includes doi:10.3390/jcs7040136. Journal of Composites Science 2025, 7(4), article 136, doi:10.3390/jcs7040136.
  16. Malik et, al. Drilling Performance of Natural Fiber Reinforced Polymer Composites: A Review. Journal of Natural Fibers 2021, 19(12), 4761–4779, doi:10.1080/15440478.2021.2022562.
  17. Zapris A, Kytinou V, Xynopoulos I, Gribniak V, Chalioris C. INNOVATIVE TORSIONAL STRENGTHENING OF RC T-BEAMS USING NSM FRP ROPES. Proceedings of International Structural Engineering and Construction. 2024;11(2). doi:10.14455/isec.2024.11(2).str-30
  18. Palanisamy S, Mayandi K, Dharmalingam S, Rajini N, Santulli C, Mohammad F, et al. Tensile Properties and Fracture Morphology of Acacia Caesia Bark Fibers Treated with Different Alkali Concentrations. Journal of Natural Fibers. 2022;19(15):11258-11269. doi:10.1080/15440478.2021.2022562
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