Topic
Flexural strength
About: Flexural strength is a research topic. Over the lifetime, 52123 publications have been published within this topic receiving 846504 citations. The topic is also known as: bending strength & modulus of rupture.
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TL;DR: In this paper, the performance of concrete columns conbined with carbon and glass FRP composite tubes was evaluated under uniaxial compressive load and showed that external confinement of concrete by FRP tubes can significantly enhance the strength, ductility, and energy absorption capacity of concrete.
Abstract: New types of structural columns are being developed for new construction. They are made of concrete-encased fiber reinforced polymer (FRP) tubes. The concrete-filled FRP tubes are cast in place. The tube acts as formwork, protective jacket, confinement, and shear and flexural reinforcement. It can also be used to complement or replace conventional steel reinforcement of the column. This paper presents the results of experimental and analytical studies of the performance of concrete columns conbined with carbon and glass FRP composite tubes. Concrete-filled FRP tubes are instrumented and tested under uniaxial compressive load. Test variables include type of fiber, thickness of tube, and concrete compressive strength. Results show that external confinement of concrete by FRP tubes can significantly enhance the strength, ductility, and energy absorption capacity of concrete. Equations to predict the compressive strength and failure strain, as well as the entire stress-strain curve of concrete-filled FRP tubes were developed. A comparison between the experimental results and those of analytical results indicate that the proposed model provides satisfactory predictions of ultimate compressive strength, failure strain, and stress-strain response. The study shows that the available models generally overestimate the strength of concrete confined by FRP tubes, resulting in unsafe design.
403 citations
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TL;DR: In this paper, surface modifications of two varieties of jute fabrics, i.e. hessian cloth (HC) and carpet backing cloth (CBC), involving dewaxing, alkali treatment, cyanoethylation and grafting, have been made with a view to their use as reinforcing agents in composites based on a biodegradable polymeric matrix, Biopol.
402 citations
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01 Mar 1994
402 citations
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TL;DR: The aim of this study was to investigate the flexural properties of different types of FRC posts and compare those values with a novel FRC material for dental applications, and found commercial prefabricated FRC Posts showed lower Flexural properties than an individually polymerised FRCMaterial.
400 citations
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TL;DR: SEM observations of the indentation induced cracks indicate that the polymer network causes greater crack deflection than the dense ceramic material, pointing out the correlation between ceramic network density, elastic modulus and hardness of PICNs.
400 citations