Composites Part C Open Access最新文献

Effect of natural fibers-epoxy composite as thermal insulation coating on galvalume roof

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100543

Redi Bintarto, Anindito Purnowidodo, Djarot B. Darmadi, Teguh Dwi Widodo

{"title":"Effect of natural fibers-epoxy composite as thermal insulation coating on galvalume roof","authors":"Redi Bintarto, Anindito Purnowidodo, Djarot B. Darmadi, Teguh Dwi Widodo","doi":"10.1016/j.jcomc.2024.100543","DOIUrl":"10.1016/j.jcomc.2024.100543","url":null,"abstract":"<div><div>Natural fibre composite coatings are an excellent choice for developing and improving the properties of galvalume roofs. This study examines the impact of natural fibre coatings combined with epoxy on galvalume roofs in reducing the thermal conductivity of the roofing material, which in turn will decrease room temperature. Data were collected by applying a mixture of natural fibres and epoxy on top of galvalume roofs, then measuring the temperature around and inside a small room with dimensions of 50 cm x 50 cm. The roof type was varied using natural fibres, including Pandanus tectorius, Fimbristylis globulosa, pineapple leaf (Ananas comosus), and banana fronds (Musa paradisiaca). In addition to thermal conductivity testing, temperature measurements inside and around the room were conducted, along with temperature tests using a thermal imaging camera. The study shows that adding natural fibre mixed with banana fronds on galvalume roofs can reduce the highest thermal conductivity value by 8.88 W/m °C. Banana fronds also demonstrated the highest capability to lower room temperature by 3.2 °C. The study concludes that natural fibres can reduce thermal conductivity in roofs and lower room temperatures.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100543"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation and modelling of the nonlinear creep behaviour of additive-manufactured carbon fibre-reinforced polyethylene terephthalate (CF-PET). 对添加剂制造的碳纤维增强聚对苯二甲酸乙二酯（CF-PET）的非线性蠕变行为进行实验研究和建模。

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100530

Silas Z. Gebrehiwot , Leonardo Espinosa-Leal , Paula Linderbäck , Heikki Remes

{"title":"Experimental investigation and modelling of the nonlinear creep behaviour of additive-manufactured carbon fibre-reinforced polyethylene terephthalate (CF-PET).","authors":"Silas Z. Gebrehiwot , Leonardo Espinosa-Leal , Paula Linderbäck , Heikki Remes","doi":"10.1016/j.jcomc.2024.100530","DOIUrl":"10.1016/j.jcomc.2024.100530","url":null,"abstract":"<div><div>In this paper, the nonlinear creep behaviour of additive-manufactured carbon fibre-reinforced polyethylene terephthalate (CF-PET) is characterised using experimental, theoretical and computational methods. The experimental approach investigates the influence of infill orientations on the creep deformation of the material. For the study, samples at 0°, 45<sup>○</sup>, and 90° infill orientations are produced with 90% infill density using fused filament fabrication (FFF). The infill orientation parameter highly influences the creep behaviour. Increasing the infill orientation from 0° to 90° monotonically improves the creep resistance of the material, which can be explained by orientation of the fibre-matrix reinforcement towards the uniaxial stresses. Surface examinations of creep-ruptured samples via scanning electron microscopy (SEM) reveal that a combination of matrix failure, fibre pull-out, fibre-matrix debonding, inter-layer debonding, and the presence of voids cause the fractures. Based on the experimental data, the primary and secondary creep responses are modelled theoretically and computationally. The theoretical model is based on the dependence of the material's creep on stress and time parameters at the transient and steady state stages. Combined stress and time functions are used to model the creep of the material. Parallelly, two-dimensional (2D) finite element (FE) analyses are made on COMSOL Multiphysics to model the creep computationally. The approach is based on the superposition of Norton's and Garofalo's creep models with predefined time hardening property. The results of the modelling are in good agreement with the experimental findings, showing a maximum of 1.04 % for the theoretical, and 2.9 % for the computational approaches.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100530"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lightweight 3D-printed heaters: design and applicative versatility 轻质 3D 打印加热器：设计和应用多样性

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100527

Francesca Aliberti , Andrea Sorrentino , Barbara Palmieri , Luigi Vertuccio , Giuseppe De Tommaso , Roberto Pantani , Liberata Guadagno , Alfonso Martone

{"title":"Lightweight 3D-printed heaters: design and applicative versatility","authors":"Francesca Aliberti , Andrea Sorrentino , Barbara Palmieri , Luigi Vertuccio , Giuseppe De Tommaso , Roberto Pantani , Liberata Guadagno , Alfonso Martone","doi":"10.1016/j.jcomc.2024.100527","DOIUrl":"10.1016/j.jcomc.2024.100527","url":null,"abstract":"<div><div>This paper proposes a new strategy for designing a 3D-printed heater that can overcome some criticalities of current commercial heater devices for application in the transport and energy sectors. A semiconductive nanocomposite material, acrylonitrile-butadiene-styrene filled with carbon nanotubes (ABS-CNT), was processed via Fused Filaments Fabrication (FFF). The printing was set to favor the current flow along the printing direction, consequently increasing the material's electrical conductivity. 3D-printed heater geometry, equivalent to several electrical resistances (resistive branches) connected in parallel, was optimized by varying the width, thickness, lengths, and number of branches. The adopted approach resulted in a flexible and scalable low-equivalent resistance value heater. Moreover, the optimized heater's flexibility allows it to be integrated into a curved fiberglass composite. Joule heating tests were experimentally performed and theoretically simulated by a multi-physics model. The numerical prediction resulted in good agreement with the experimental data. The results encourage the application of 3D-printed heaters as functional patches for the thermal management of different devices/components, including complex-shape composite structures.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100527"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparative analysis of delamination resistance in CFRP laminates interleaved by thermoplastic nanoparticle: Evaluating toughening mechanisms in modes I and II 热塑性纳米粒子交错复合材料层压板抗分层能力的比较分析：评估模式 I 和模式 II 的增韧机制

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100518

Reza Mohammadi , R Akrami , Maher Assaad , Ahmed Imran , Mohammad Fotouhi

{"title":"Comparative analysis of delamination resistance in CFRP laminates interleaved by thermoplastic nanoparticle: Evaluating toughening mechanisms in modes I and II","authors":"Reza Mohammadi , R Akrami , Maher Assaad , Ahmed Imran , Mohammad Fotouhi","doi":"10.1016/j.jcomc.2024.100518","DOIUrl":"10.1016/j.jcomc.2024.100518","url":null,"abstract":"<div><div>The study considers the delamination resistance of carbon/epoxy laminates modified with Thermoplastic Nanoparticles of Polysulfone (TNPs). A new electrospinning nanofiber technique was utilized to convert polysulfone polymer into nanoparticles and uniformly disperse them within the resin. Fracture toughness was evaluated under loading modes I and II. In mode I, the toughness (<em>G<sub>IC</sub></em>) increased significantly from 170 to 328 J/m² with TNPs incorporation. However, mode II showed minimal change, with <em>G<sub>IIC</sub></em> values of 955 J/m² for virgin and 950 J/m² for TNPs-modified specimens. Scanning Electron Microscopy (SEM) was employed to depict the influence of TNPs on damage characteristics and crack propagation patterns. In mode I, crack deviation enhanced toughness as TNPs bypassed the PSU, while in mode II, cracks propagated through TNPs, resulting in particle smearing on the epoxy surface. This highlights TNPs' potential to modify the fracture toughness in mode I loading, but their effect is constrained in mode II loading scenarios.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100518"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An integrated approach for prognosis of Remaining Useful Life for composite structures under in-plane compressive fatigue loading 平面压缩疲劳载荷下复合材料结构剩余使用寿命预测的综合方法

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100531

Ferda C. Gül, Morteza Moradi, Dimitrios Zarouchas

{"title":"An integrated approach for prognosis of Remaining Useful Life for composite structures under in-plane compressive fatigue loading","authors":"Ferda C. Gül, Morteza Moradi, Dimitrios Zarouchas","doi":"10.1016/j.jcomc.2024.100531","DOIUrl":"10.1016/j.jcomc.2024.100531","url":null,"abstract":"<div><div>The prognostic of the Remaining Useful Life (RUL) of composite structures remains a critical challenge as it involves understanding complex degradation behaviors while it is emerging for maintaining the safety and reliability of aerospace structures. As damage accumulation is the primary degradation indicator from the structural integrity point of view, a methodology that enables monitoring the damage mechanisms contributing to the structure's failure may facilitate a reliable and effective RUL prognosis. Therefore, in this study, an integrated methodology has been introduced by targeting the RUL and progressive delamination state via Deep Neural Network (DNN) trained with Guided wave-based damage indicators (GW-DIs). These GW-DIs are obtained via signal processing, Hilbert transform, and Continuous Wavelet Transform. This work uses GW-DIs to train and test the proposed model within two frameworks: one focusing on individual sample analysis to explore path dependency in RUL and delamination prognosis and another on an ensembled dataset to propose a generic model across varying stress scenarios. Results from the study indicate that proposed DNN frameworks are capable of encapsulating fast and slow degradation scenarios to evaluate the RUL prediction with associated delamination progress, which could contribute to ensuring the integrity and longevity of critical life-safe structures.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100531"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142707078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multiscale finite element procedure to predict the effective elastic properties of woven composites 预测编织复合材料有效弹性特性的多尺度有限元程序

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100539

Lyazid Bouhala, Samet Ozyigit, Abdelghani Laachachi, Ahmed Makradi

{"title":"Multiscale finite element procedure to predict the effective elastic properties of woven composites","authors":"Lyazid Bouhala, Samet Ozyigit, Abdelghani Laachachi, Ahmed Makradi","doi":"10.1016/j.jcomc.2024.100539","DOIUrl":"10.1016/j.jcomc.2024.100539","url":null,"abstract":"<div><div>This paper integrates numerical and experimental approaches to predict the mechanical properties of a woven composite with carbon fiber-based fabrics. Initially, a multiscale modeling approach based on the finite element method ascertained the micro-scale properties of the composite tows, taking into account the effect of voids present in the epoxy resin. Subsequently, a meso-scale model was built and employed to predict the mechanical properties of the composite at this scale. The representative volume elementary (RVE) was generated using TexGen software, and was then imported and used by Abaqus software to compute the effective mechanical properties. Lastly, a macro-scale model of a composite beam was created, simulating a three-point bending test using the effective mechanical properties obtained previously. Concurrently, a physical counterpart of the composite beam was manufactured and subjected to a laboratory three-point bending test, measuring the flexural modulus and many other parameters. A comparison of the two sets of results revealed a high degree of consistency.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100539"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics and evaluation of recycled waste PVCs as a filler in composite structures: Validation through simulation and experimental methods 作为复合材料结构填充物的回收废聚氯乙烯的特性和评估：通过模拟和实验方法进行验证

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100525

Eko Supriyanto , Nugroho Karya Yudha , Alvin Dio Nugroho , Muhammad Akhsin Muflikhun

{"title":"Characteristics and evaluation of recycled waste PVCs as a filler in composite structures: Validation through simulation and experimental methods","authors":"Eko Supriyanto , Nugroho Karya Yudha , Alvin Dio Nugroho , Muhammad Akhsin Muflikhun","doi":"10.1016/j.jcomc.2024.100525","DOIUrl":"10.1016/j.jcomc.2024.100525","url":null,"abstract":"<div><div>Solar Cell as a renewable energy utilization in today's era is considered a suitable choice due to encompass sustainability, environmental preservation, and energy processing efficiency. Solar cells have a finite lifespan that need replacement to maintain energy absorption efficiency. Unfortunately, discarded materials are often underutilized or improperly disposed of. In this study, used photovoltaic solar cell materials are explored as reinforcements in composites. The results showed that 4 % cell filler specimen exhibited highest ultimate tensile strength (UTS) with 51.43 MPa. Followed by Compression strength with 35.38 MPa and flexural strength with 45.54 MPa. SEM/EDS analysis of PV filler specimens revealed the dominance of Carbon (C) and Silica (Si) materials, comprising over 60 %. FT-IR analysis indicated varying compound bond intensities affecting polymerization and material strength under applied forces. Simulation results showed a difference of <2 % when compared to experimental testing outcomes. The current study benefited in environmental conservation efforts through waste reduction and the reuse of recycled materials and are listed in several applications such as in wind turbine, structures, lightweight laminates, automotive structures, and sport equipment.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100525"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142437707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and numerical investigation of energy absorption in honeycomb structures based on lozenge grid unit cells under various loading angles

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100546

Hussain Gharehbaghi , Maryam Jamshidi , Abdulla Almomani

{"title":"Experimental and numerical investigation of energy absorption in honeycomb structures based on lozenge grid unit cells under various loading angles","authors":"Hussain Gharehbaghi , Maryam Jamshidi , Abdulla Almomani","doi":"10.1016/j.jcomc.2024.100546","DOIUrl":"10.1016/j.jcomc.2024.100546","url":null,"abstract":"<div><div>The present study aims to numerically and experimentally analyze the energy absorption characteristics of honeycomb structures using Lozenge grid unit cells made from continuous glass fibers reinforced polylactic acid (PLA). The design and load-bearing capability of the Lozenge grid was also examined under different orientations angles. The composite grids were also subjected to heat treatment after the tests, at 70 °C, in order to measure its effect on the energy absorption capacity. The Lozenge grid specimens were additively manufactured using fused filament fabrication. The mechanical properties and failure models were described using the VUSDFLD subroutine in order to simulate the Lozenge structure under quasi-static compressive load. The results revealed a good correlation between the numerical and the experimental values. Moreover, Lozenge grid unit cells based structures at 0 or 90° was found with the highest energy absorption capacity. Meanwhile, the least energy absorption was seen at 45°. Overall, the structures had much higher energy absorption capacity at angles closer to 0 and 90°. Outcomes from this work is aimed toward understanding the damage tolerance of Lozenge lattices, and hence the reliability of such new emerging lightweight structures.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100546"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The acoustic properties of FDM printed wood/PLA-based composites FDM 印刷木材/聚乳酸基复合材料的声学特性

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100532

K. Vigneshwaran , N. Venkateshwaran , R. Shanthi , Gokul Kannan , B.Rajesh Kumar , Vigneshwaran Shanmugam , Oisik Das

{"title":"The acoustic properties of FDM printed wood/PLA-based composites","authors":"K. Vigneshwaran , N. Venkateshwaran , R. Shanthi , Gokul Kannan , B.Rajesh Kumar , Vigneshwaran Shanmugam , Oisik Das","doi":"10.1016/j.jcomc.2024.100532","DOIUrl":"10.1016/j.jcomc.2024.100532","url":null,"abstract":"<div><div>The acoustic properties of the Fused Deposition Modelling (FDM) printed PLA wood composite was investigated. Initially tensile and flexural of wood PLA composite was studied with respect to varying layer thickness (0.15 mm, 0.20 mm, and 0.30 mm), infill density (30 %, 60 %, and 90 %), and pattern (Layer, Triangle, and Hexagon). The outcomes demonstrated that the specimen produced with a hexagonal pattern, 90% infill density, and 0.2 mm layer thickness had the highest tensile (16 MPa) and flexural strength (16 MPa). Utilizing this optimized parameter, micro-perforated panels were printed and acoustic properties were studied. Five specimens with a 3 mm thickness, various perforation diameters (5 mm, 4 mm, and 3 mm), and architecturally tapered perforations were fabricated. Using the impedance tube approach, the sound transmission loss and sound absorption coefficients were measured. The findings indicate that, in comparison to all the printed specimens, tapered type perforation with an exterior diameter of 5 mm and an internal diameter of 4.7 mm showed highest sound absorption coefficient of 0.60 Hz. A viscous loss is obtained by its convergent hole diameter reduction, which results in sound attenuations and is easily absorbed in the micro-perforated panel. Similar to this, the specimen printed with smaller perforation diameters (3 mm) had a high sound transmission loss of 79 dB. The small diameter of the perforations prevented the passage of sound waves. The current study is anticipated to lay the groundwork for extensive future research on these classes of materials, potentially serving as a catalyst for advancements in FDM based polymeric materials research and development.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100532"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Durability and compressive strength of composite polyolefin fiber-reinforced recycled aggregate concrete: An experimental study 复合聚烯烃纤维增强再生骨料混凝土的耐久性和抗压强度：实验研究

IF 5.3

Composites Part C Open Access Pub Date : 2024-10-01 DOI: 10.1016/j.jcomc.2024.100533

Mojtaba Gorji Azandariani , Mehdi Vajdian , Mehrdad Javadi , Ali Parvari

{"title":"Durability and compressive strength of composite polyolefin fiber-reinforced recycled aggregate concrete: An experimental study","authors":"Mojtaba Gorji Azandariani , Mehdi Vajdian , Mehrdad Javadi , Ali Parvari","doi":"10.1016/j.jcomc.2024.100533","DOIUrl":"10.1016/j.jcomc.2024.100533","url":null,"abstract":"<div><div>This study investigates of using recycled concrete aggregates along with the reinforcement of polyolefin fibers to augment both the compressive strength and durability of concrete, in alignment with the principles of sustainable development. This study experimentally investigated the compressive strengths and durability of composite polyolefin fiber-reinforced recycled aggregate concrete (PFRRAC) exposed to chloride and acidic environments. For this purpose, 150 cubic concrete samples of 100 × 100 × 100 mm with various combinations of recycled aggregates and polyolefin fibers were made and subjected to axial compressive loading. The results show that the addition of fibers significantly enhances the compressive strength of concrete, with an increase of up to 34.36 % at 5 % fiber content. However, increasing the proportion of recycled aggregates reduces the compressive strength, with reductions ranging from 21.12 % to 43.85 % as the recycled aggregate content rises to 70 %. Moreover, the combination of fibers and recycled aggregates demonstrates potential for improving the sustainability and durability of concrete under challenging environmental conditions, particularly in chloride and acidic environments. In acidic environments, the inclusion of fibers significantly enhances the resistance to strength reduction. Furthermore, the study uncovers that a higher concentration of recycled aggregates exacerbates the reduction in strength in chloride-rich settings, emphasizing the imperative nature of meticulous mix design and material selection. The findings for the integration of even minor quantities of polyolefin fibers to amplify the performance and sustainability of concrete mixtures, especially when utilizing recycled aggregates, thus promoting eco-friendly construction practices.</div></div>","PeriodicalId":34525,"journal":{"name":"Composites Part C Open Access","volume":"15 ","pages":"Article 100533"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142662421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0