Fiber-reinforced polymers (FRPs) are being increasingly used to replace rebars as reinforcements for concrete. In this study, the flexural behavior of one-way concrete slabs reinforced with a grid-type carbon FRP (CFRP) (carbon grid), in the form of strands with embossed surfaces, was experimentally investigated. The experimental variables included the effective depth, number of carbon grid layers, and concrete compressive strength. The results exhibit that the surface embossing of the CFRP strands effectively improves their bonding with concrete based on the crack formation pattern. Concrete specimens reinforced with carbon grids exhibited an increased maximum load and stiffness as the effective depth, number of carbon grid layers, and concrete compressive strength increased. Among the experimental variables, the effective depth exhibited the greatest influence on the flexural behavior of the carbon-grid-reinforced concrete specimen. Furthermore, the ratios of the experimental to calculated flexural strength values for all carbon-grid-reinforced concrete specimens ranged from 0.74 to 1.22. Based on the results, a trilinear load-deflection curve was proposed to simulate the flexural behavior of carbon-grid-reinforced concrete members, considering the bond property between the concrete and the carbon grid. The proposed trilinear load-deflection curve reasonably simulated the flexural behavior of the specimens reinforced with carbon grids.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11820042 | PMC |
| http://dx.doi.org/10.3390/polym17030411 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Multiscale Mechanical Characterization of Mineral-Reinforced Wood Cell Walls.
ACS Appl Mater Interfaces
March 2025
Department of Chemistry and Biochemistry, Department of Ocean and Mechanical Engineering, Florida Atlantic University, 777 Glades Rd, Boca Raton, Florida 33431, United States.
Studying the multiscale mechanics of bio-based composites offers unique perspectives on underlying structure-property relations. Cellular materials, such as wood, are highly organized, hierarchical assemblies of load-bearing structural elements that respond to mechanical stimuli at the microscopic, mesoscopic and macroscopic scale. In this study, we modified oak wood with nanocrystalline ferrihydrite, a widespread ferric oxyhydroxide mineral, and characterized the resulting mechanical properties of the composite at various levels of organization.
View Article and Find Full Text PDFMarine dredged sediment based cementitious matrix: thermal treatment, physical properties and prediction using response surface methodology.
Environ Sci Pollut Res Int
March 2025
Department of Chemical, Environmental, and Materials Engineering, Higher Polytechnic School of Jaén, University of Jaen, Campus Las Lagunillas S/N, 23071, Jaén, Spain.
Dredging is a necessary activity to control the natural accumulation of sediments at the bottom of the harbor. The management of dredged sediments is a complex issue; the main answer to the question of the fate of polluted sediments dredged was to release them at sea. However, mentalities have changed and respect for the environment is becoming more and more important in the decision-making process.
View Article and Find Full Text PDFElectro-mechanical behaviour of mortars reinforced with alternative electrically conductive inclusions.
Mater Struct
February 2025
Department of Civil and Structural Engineering, The University of Sheffield, Sheffield, UK.
The incorporation of electrically conductive inclusions in structural materials can impart self-sensing functionalities, making them ideal for structural health monitoring applications. However, the use of more sustainable alternatives and their effect on key engineering properties remain largely unexplored, while the adoption of different testing protocols for the characterisation of electrical/self-sensing properties can lead to different results, thus questioning their reliability, even for existing smart composites. This paper investigates systematically the effect of recycled carbon fibres and graphite powder on the mechanical, electrical, transport properties and piezoresistive performance of cementitious mortars.
View Article and Find Full Text PDFEnhanced Performance of Novel Amorphous Silicon Carbide Microelectrode Arrays in Rat Motor Cortex.
Micromachines (Basel)
January 2025
Department of Bioengineering, The University of Texas at Dallas, Richardson, TX 75080, USA.
Implantable microelectrode arrays (MEAs) enable the recording of electrical activity from cortical neurons for applications that include brain-machine interfaces. However, MEAs show reduced recording capabilities under chronic implantation conditions. This has largely been attributed to the brain's foreign body response, which is marked by neuroinflammation and gliosis in the immediate vicinity of the MEA implantation site.
View Article and Find Full Text PDFA methodology for evaluating the fracture width of a notched RC multiple-layer flat slab under cyclic loading.
MethodsX
June 2025
Civil Engineering Department, Gedung Teknik Sipil, State Polytechnic of Malang, Jl. Soekarno Hatta no 9, Kec. Lowokwaru, Malang 65141 Indonesia.
This paper introduces an innovative method for assessing crack width in notched reinforced concrete (RC) slabs under cyclic loads, considering both precast and in-situ layers in composite slab configurations. The study addresses gaps in current research on crack behaviour under fatigue, providing a method that evaluates stress distribution and crack spacing around flexural notches. By employing empirical curvature values and comparing predicted crack widths with experimental data and fracture mechanics standards, this approach accounts effectively for tension stiffening effects.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!