Natural fibres and biopolymers in FRP composites for strengthening concrete structures: A mixed review

Nwankwo, Chinyere O.; Mahachi, Jeffrey; Olukanni, David O.; Musonda, Innocent

doi:10.1016/j.conbuildmat.2022.129661

Cited by 31 publications

(10 citation statements)

References 115 publications

(144 reference statements)

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“…In that regard, natural fibers can display some advantages over glass fibers as they may present a lower weight along with providing an appreciable increment in the mechanical properties of a matrix. 96,97 In addition to that, the inherent low density of some of these biodegradable polymers also influences processability in the sense that it can reduce the energy input during processing. Based on that, Aliotta et al 98 studied the properties of PLA blended with short flax fibers.…”

Section: Properties and Applications Of Biodegradable Polymeric Compo...mentioning

confidence: 99%

“…That can be achieved by introducing bio‐based fillers which can also potentially make the manufacturing cheaper and eco‐friendlier. In that regard, natural fibers can display some advantages over glass fibers as they may present a lower weight along with providing an appreciable increment in the mechanical properties of a matrix 96,97 . In addition to that, the inherent low density of some of these biodegradable polymers also influences processability in the sense that it can reduce the energy input during processing.…”

Section: Properties and Applications Of Biodegradable Polymeric Compo...mentioning

confidence: 99%

See 1 more Smart Citation

Biodegradable polymers and composites: Recent development and challenges

Maurya,

de Souza,

Dawsey

et al. 2023

Polymer Composites

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Biodegradable polymers are highly sought after as they have the potential to reduce the issue of plastic waste and eventually lead to a circular economy. Yet, conciliating eco‐friendliness with competitive properties is often challenging. Polymerization and processing techniques have been developed and optimized to improve such factors. Some of the common polymerization methods to obtain such materials are condensation, ring‐opening, addition, and biocatalytic‐assisted polymerization. Alongside that, processing techniques such as melt mixing/extrusion, solution castings, compression, and injection molding have also been employed for the manufacture of biodegradable polymers. While these traditional techniques are viable routes to market, there is still the need to further improve their properties to make them comparable to their petrochemical‐based counterparts. To assist with that, the production of composites and blending techniques are facile approaches that demonstrated promising improvements in their properties. Based on these aspects, this review is aimed at discussing the main types of biodegradable polymers, followed by the compositing approaches reported in the recent literature, their structure–property relationships, and biodegradability mechanisms. The first section provides an introductory overview of biodegradable polymers and their composites. The second section focuses on the most prominent polymers used in the industry. Furthermore, the fabrication techniques, along with their property and application relationships are provided with an emphasis on mechanical reinforcements and the biomedical field. Finally, some future perspectives are given to clarify some of the known challenges and, possibly, provide some insights for the reader to develop novel ideas.

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Section: Properties and Applications Of Biodegradable Polymeric Compo...mentioning

confidence: 99%

Section: Properties and Applications Of Biodegradable Polymeric Compo...mentioning

confidence: 99%

Biodegradable polymers and composites: Recent development and challenges

Maurya,

de Souza,

Dawsey

et al. 2023

Polymer Composites

View full text Add to dashboard Cite

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“…As widely accepted, cement-based material is brittle with low ductility and energy-absorbing ability (Li et al, 2023; Mousavi et al, 2019; Wang et al, 2023). Considering of such feature, fiber is often used synchronically to enhance the cracking-resistance/ductility of cementitious materials and improve the load-carrying capacity after crack initiation, which is known as fiber reinforced polymer (FRP) (Nwankwo et al, 2023; Zhou et al, 2023). The merit of FRP is the good resistance against corrosion, which can be functionally used with the marine concrete that usually faces to large amount of chloride ion (Less et al, 2023; Zhu et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Dynamic tensile behavior of fiber reinforced materials based on fiber layering modeling

Gong,

Peng,

Wang

et al. 2023

Advances in Structural Engineering

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Among the failure forms of fiber reinforced materials, interface failure caused by fiber debonding is the most common but complex failure mode. This research proposed a fiber layering modeling method based on the different mechanical properties of the outer and inner parts of fiber yarn, then investigated the mechanical behavior of fiber reinforced materials under dynamic loads with different loading speeds. Two pullout models were established, considering the layering feature of fiber caused by the matrix penetration. The simulated results were compared with the existing experimental data to determine reliable parameters values of the fiber-matrix interface. Based on the values, another pullout model and tensile model were built. Distribution and development of stress in the loading process were discussed. Results show that fiber modeling with inner and outer parts, as well as the cohesive property with reliable parameters, could effectively represent the interface characteristics of fiber reinforced materials under dynamic load.

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“…The findings demonstrate that the FRP system positively influences both the static and dynamic behavior of the structures, enhancing their load-carrying capacity and mitigating natural frequency degradation. A comprehensive literature review on the utilization of natural fibers and biopolymers in FRP composites for concrete members was presented by Nwankwo et al [5]. The study examines various FRP configurations and strengthening techniques, placing emphasis on the effectiveness of bio-based FRPs in enhancing the strength of concrete beams and columns.…”

Section: Introductionmentioning

confidence: 99%

Advancing Shear Capacity Estimation in Rectangular RC Beams: A Cutting-Edge Artificial Intelligence Approach for Assessing the Contribution of FRP

Ezami,

Özyüksel Çiftçioğlu,

Mirrashid

et al. 2023

Sustainability

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Shear strength prediction in FRP-bonded reinforced concrete beams is crucial for ensuring structural integrity and safety. In this extensive investigation, advanced machine learning algorithms are harnessed to achieve precise shear strength predictions for rectangular RC beams reinforced with FRP sheets. The aim of this research is to enhance the accuracy and reliability of shear strength estimation, providing valuable insights for the design and assessment of FRP-strengthened structures. The primary contributions of this study lie in the meticulous comparison of various machine learning algorithms, including Xgboost, Gradient Boosting, Random Forest, AdaBoost, K-nearest neighbors, and ElasticNet. Through comprehensive evaluation based on predictive performance, the most suitable model for accurately estimating the shear strength of FRP-reinforced rectangular RC beams is identified. Notably, Xgboost emerges as the superior performer, boasting an impressive R2 value of 0.901. It outperforms other algorithms and demonstrates the lowest RMSE, MAE, and MAPE values, establishing itself as the most accurate and reliable predictor. Furthermore, a sensitivity analysis is conducted using artificial neural networks to assess the influence of input variables. This additional research facet sheds light on the critical factors shaping shear strength outcomes. The study, as a whole, represents a substantial contribution to advancing the development of accurate and dependable prediction models. The practical implications of this work are far-reaching, particularly for engineering applications in the realm of structures reinforced with FRP. The findings have the potential to transform the approach to the design and assessment of such structures, elevating safety, efficiency, and performance to new heights.

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Natural fibres and biopolymers in FRP composites for strengthening concrete structures: A mixed review

Cited by 31 publications

References 115 publications

Biodegradable polymers and composites: Recent development and challenges

Biodegradable polymers and composites: Recent development and challenges

Dynamic tensile behavior of fiber reinforced materials based on fiber layering modeling

Advancing Shear Capacity Estimation in Rectangular RC Beams: A Cutting-Edge Artificial Intelligence Approach for Assessing the Contribution of FRP

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