Agglomeration effects on the buckling behaviour of embedded concrete columns reinforced with SiO<sub>2</sub> nano-particles

Zamanian, M; Kolahchi, Reza; Bidgoli, Mahmood Rabani

doi:10.12989/was.2017.24.1.043

Cited by 19 publications

(8 citation statements)

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“…Besides, there was a decrease in the results of KFRE-25 samples compared to KFRE-15 due to the agglomeration effects leading to lower stiffness in sample. [59] It was clearly seen that stability loss in KFRE-25 samples was early happened when compared to other NS filled ones in response curves. This reduction can be also explained by exfoliation degree phenomenon which leads to premature failures caused by agglomeration formation after a certain level of nano particle incorporation.…”

Section: Axial Buckling Testsmentioning

confidence: 91%

Axial and lateral buckling analysis of kevlar/epoxy fiber‐reinforced composite laminates incorporating silica nanoparticles

Özbek

2020

Polymer Composites

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The aim of this study was to experimentally determine the effect of silica nanoparticles (NS) on the buckling characteristics of Kevlar/epoxy fiber reinforced composite laminates. The composite samples with different weight fractions of NS particles, namely 0.0, 0.5, 1.0, 1.5 and 2.5 wt%, were prepared by vacuum assisted resin transfer molding (VARTM) and subjected to axial and lateral buckling tests. Additionally, the buckling tests were performed on the samples with different lengths (125, 150, 175, 200 and 225 mm) to analyze in more detail the influence of NS fractions on axial and lateral buckling performances. Morphology and failure mechanisms of the samples were analyzed using scanning electron microscopy images of critical regions of each sample. The results showed that the incorporation of NS particles led to higher critical buckling load values for both axial and lateral buckling. The highest critical buckling load values for both axial and lateral buckling events were observed for 1.5 wt% NS particle content in Kevlar/epoxy composite laminates. Further

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Section: Axial Buckling Testsmentioning

confidence: 91%

Axial and lateral buckling analysis of kevlar/epoxy fiber‐reinforced composite laminates incorporating silica nanoparticles

Özbek

2020

Polymer Composites

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“…Nano-particles can promote interfacial interactions [157] and increase bubble stability [158]. Besides, the use of nano-particles could accelerate cement hydration, improve the mechanical properties of concrete [81], as well as enhance the resistance to water penetration [159].…”

Section: Measures To Improve the Stability Of Air Bubbles In Fresh Comentioning

confidence: 99%

A Review on Bubble Stability in Fresh Concrete: Mechanisms and Main Factors

et al. 2020

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In order to improve the stability of air bubbles in fresh concrete, it is of great significance to have a better understanding of the mechanisms and main influencing factors of bubble stability. In the present review, the formation and collapse process of air bubbles in fresh concrete are essentially detailed; and the advances of major influencing factors of bubble stability are summarized. The results show that the surface tension of air–liquid interface exerts a huge impact on bubble stability by reducing surface free energy and Plateau drainage, as well as increasing the Gibbs surface elasticity. However, surface tension may not be the only determinant of bubble stability. Both the strength of bubble film and the diffusion rate of air through the membrane may also dominate bubble stability. The application of nano-silica is a current trend and plays a key role in ameliorating bubble stability. The foam stability could be increased by 6 times when the mass fraction of nano-particle reached 1.5%.

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“…For instance, Shokravi [ 14 ] delved into the vibration analysis of silica nanoparticle-reinforced concrete beams, taking into account the intriguing effects of agglomeration. Zamanian Mohammad and Bidgoli [ 15 ] explored the impact of agglomeration on the buckling behavior of embedded concrete columns reinforced with SiO 2 nanoparticles. Heidari and Tavakoli [ 16 ] carried out a numerical study, examining the vibration response of concrete beams reinforced with SiO 2 nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Nano-Clay Platelet Integration for Enhanced Bending Performance of Concrete Beams Resting on Elastic Foundation: An Analytical Investigation

et al. 2023

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Acknowledging the growing impact of nanotechnologies across various fields, this engaging research paper focuses on harnessing the potential of nano-sized materials as enhancers for concretes. The paper emphasizes the strategic integration of these entities to comprehensively improve the strength and performance of concrete matrixes. To achieve this, an analytical study is conducted to investigate the static behavior of concrete beams infused with different types of clay nano-platelets (NC’s), employing quasi-3D beam theory. The study leverages the effective Eshelby’s homogenization model to determine the equivalent elastic characteristics of the nanocomposite. The intricate interactions of the soil medium are captured through the use of a Winkler–Pasternak elastic foundation. By employing virtual work principles, the study derives equations of motion and proposes analytical solutions based on Navier’s theory to unravel the equilibrium equations of simply supported concrete beams. The results shed light on influential factors, such as the clay nano-platelet type, volume percentage, geometric parameters, and soil medium, providing insights into the static behavior of the beams. Moreover, this research presents previously unreported referential results, highlighting the potential of clay nano-platelets as reinforcements for enhancing structural mechanical resistance.

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Agglomeration effects on the buckling behaviour of embedded concrete columns reinforced with SiO₂ nano-particles

Cited by 19 publications

References 0 publications

Axial and lateral buckling analysis of kevlar/epoxy fiber‐reinforced composite laminates incorporating silica nanoparticles

Axial and lateral buckling analysis of kevlar/epoxy fiber‐reinforced composite laminates incorporating silica nanoparticles

A Review on Bubble Stability in Fresh Concrete: Mechanisms and Main Factors

Nano-Clay Platelet Integration for Enhanced Bending Performance of Concrete Beams Resting on Elastic Foundation: An Analytical Investigation

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Agglomeration effects on the buckling behaviour of embedded concrete columns reinforced with SiO2 nano-particles

Cited by 19 publications

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Axial and lateral buckling analysis of kevlar/epoxy fiber‐reinforced composite laminates incorporating silica nanoparticles

Axial and lateral buckling analysis of kevlar/epoxy fiber‐reinforced composite laminates incorporating silica nanoparticles

A Review on Bubble Stability in Fresh Concrete: Mechanisms and Main Factors

Nano-Clay Platelet Integration for Enhanced Bending Performance of Concrete Beams Resting on Elastic Foundation: An Analytical Investigation

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Agglomeration effects on the buckling behaviour of embedded concrete columns reinforced with SiO₂ nano-particles