Results 71 to 80 of about 758,737 (210)

Flexural strengthening of RC beams using GFRP grid bonded with sprayed polyurea

, 2023
•Satisfactory bonding existed between polyurea system and concrete beams.•Rupture strain and strength of fabric increased after impregnated with epoxy resin.•Flexural strengthening of concrete beams with polyurea system is effective.
Nanni, Antonio, Piyong Yu, Yu, Piyong, Silva, Pedro, Pedro Silva, Antonio Nanni   +5 more
core   +1 more source

Nanocellulose Hybrid Reinforcement in Surface‐Modified Pistachio Shell/Epoxy Composites: A Multiscale Interface Engineering Strategy for Lignocellulosic Biomass‐Based Materials

Polymer Composites, EarlyView.
Sustainable high‐performance epoxy composites reinforced with functionalized pistachio shell waste and nanocellulose. ABSTRACT In this study, pistachio shell waste (PShW) was used as a lignocellulosic reinforcing phase in an epoxy matrix to develop sustainable composite materials, and its surface properties were tailored using various chemical ...
Mahide Yağmur Kara, Suheyla Kocaman
wiley   +1 more source

Mechanical Performance Retention of CNT‐Modified Sisal Biocomposites Under Hygrothermal‐Saline Aging

Polymer Composites, EarlyView.
Mechanical Performance Retention of CNT‐Modified Sisal Biocomposites Under Hygrothermal‐Saline Aging. ABSTRACT This study investigates the influence of carbon nanotubes (CNTs) on the moisture absorption kinetics and mechanical degradation of discontinuous random fiber (DRF) biocomposites under accelerated hygrothermal–saline (HTS) aging.
Guglielmo Marchesa, Nicola Montinaro, Giuseppe Napoli, Antonio Pantano   +3 more
wiley   +1 more source

A strengthening system: international patent for innovative structural strengthening using externally prestressed fibre wraps

, 2007
This invention relates to a strengthening system for a concrete beam and a method of strengthening a concrete beam. In particular, the invention relates to repairing concrete beams having flexural or shear cracks and therefore will be described in this ...
Aravinthan, Thiru, Heldt, Tim, Van Erp, Gerard   +2 more
core  

Sustainable Overprinting of Recycled Carbon Fiber Reinforced Thermoplastic Composites With a Stabilized Surface Treatment Through In Situ Bonding

Polymer Composites, EarlyView.
Overprinting filament from recycled composites with surface treatment for flat substrate and curved substrate. ABSTRACT This study presents a sustainable 3D overprinting approach for recycling of discontinuous carbon fibers from both thermoset and thermoplastic composites, incorporating a stable fiber surface treatment with polydopamine/silica ...
Yahui Lyu, Jiang Wu, Aonan Li, Haoqi Zhang, Dongmin Yang   +4 more
wiley   +1 more source

Finite element analysis of flexural behavior of UHPC-strengthened RC beams based on experimental calibration

Scientific Reports
To enhance the strengthening effectiveness of existing reinforced concrete (RC) beams and fully utilize the material properties of ultra-high performance concrete (UHPC), this study systematically investigates the flexural strengthening mechanism of UHPC
Jiawei Wang, Zhongbin Li
doaj   +1 more source

Flexural strengthening of Reinforced Concrete (RC) Beams Retrofitted with Corrugated Glass Fiber Reinforced Polymer (GFRP) Laminates

Curved and Layered Structures, 2015
Strengthening the structural members of old buildings using advanced materials is a contemporary research in the field of repairs and rehabilitation. Many researchers used plain Glass Fiber Reinforced Polymer (GFRP) sheets for strengthening Reinforced ...
Aravind N., Samanta Amiya K., Roy Dilip Kr. Singha, Thanikal Joseph V.   +3 more
doaj   +1 more source

Fiber‐Reinforced Bio‐Epoxy Composites: Degradation Mechanisms in Saline Environment

Polymer Composites, EarlyView.
Constituent level degradation of bio‐epoxy composites after saline aging. ABSTRACT This study examines the degradation behavior of bio‐epoxy composites reinforced with glass, basalt, carbon, and flax fiber yarns in a simulated saline environment. Fiber yarns and composite samples were exposed to 3.5% NaCl solution at 60°C for up to 3000 h.
Abdullah Iftikhar, Allan Manalo, Wahid Ferdous, Mazhar Peerzada, Hannah Seligmann, Kate Nguyen, Brahim Benmokrane   +6 more
wiley   +1 more source

Reinforcement of Polyvinyl Chloride Using Plasma‐Activated Aramid Fibers and Surface‐Bonded Compatibilizer

Polymer Composites, EarlyView.
Two‐step compatibiization of aramid fibers with PVC via Plasma Activation and surface reaction. ABSTRACT This study investigated the application of a two‐step compatibilization procedure to aramid fiber–polyvinyl chloride (PVC) composites. Aramid fibers were subjected to high radio frequency power air plasma treatment and incorporated into the PVC ...
Adekunle Lawrence Omoniyi, Kushal Panchal, Roozbeh Mafi, Li Xi   +3 more
wiley   +1 more source

Mechanical and Impact Response of Adhesively Bonded ASA/PA12 Sandwich Structures Produced by Fused Filament Fabrication

Polymer Engineering &Science, EarlyView.
Adhesively bonded ASA/PA12 FFF sandwich structures reveal that interfacial compliance governs mechanical performance. Cyanoacrylate enhances strength but induces brittle failure, while polyurethane improves ductility and impact resistance, demonstrating that adhesive properties and stacking sequence are critical design parameters for optimizing multi ...
Berkay Ergene, Bayram Yildiz, Tolgahan Ermergen, Çağın Bolat   +3 more
wiley   +1 more source