Behaviour of Nano Silica in Tension Zone of High Performance Concrete Beams

Jaishankar, P.; Vivek, D.

doi:10.1088/1755-1315/80/1/012028

Cited by 7 publications

(6 citation statements)

References 1 publication

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“…Many features of concrete like flow ability, mechanical properties, and durability can be enhanced by incorporating nanoparticles due to their excellent properties. Several researchers have undertaken various studies based on adding low-dose nanomaterials to replace the binder in concrete mixes in order to improve the characteristics of concrete, with successful outcomes [3][4][5][6]. The inclusion of nano-silica (NS), nano CaCO 3 , or nano TiO 2 particles demonstrated a great increase in the physical characteristics and durability of concrete due to its nucleation and micro-aggregate filling effects.…”

Section: Introductionmentioning

confidence: 99%

Influence of nano silica on impact resistance and durability of fly ash concrete in structural buildings

Ramasamy,

Deivasigamani,

Soundararajan

et al. 2024

Matéria (Rio J.)

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The impact of integrating Nano Silica (NS) on mechanical characteristics, resistance towards impact, and chloride penetration on concrete having Fly Ash (FA) are investigated in this research. The NS particles are subsequently mixed into concrete at one, two, three, four, and five percent of the binder's mass, respectively. The performance of the specimens under an impact load is assessed by utilizing the drop weight impact technique, frequency on strikes, and impact force variation has been used to evaluate the specimen's impact resistance. The concrete's ability to withstand damage from chloride penetration was evaluated by determining the chloride diffusion coefficient of the samples. The test findings demonstrated that adding NS to concrete may significantly increase its mechanical characteristics as well as chloride penetration resistance. The optimum amount of NS substitution in concrete is two to three percent and it is discovered that if the proportion of NS is too large, the benefits of incorporating NS into the characteristics of the concrete are diminished, and might even have a detrimental effect on the resistance towards impact and durability of the concrete. Moreover, the experimental compressive strength and split tensile is compared with existing gene expression programming model.

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Section: Introductionmentioning

confidence: 99%

Influence of nano silica on impact resistance and durability of fly ash concrete in structural buildings

Ramasamy,

Deivasigamani,

Soundararajan

et al. 2024

Matéria (Rio J.)

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“…When compared with the reference beam, RC beams with an NS of 3% experienced a 19% increase in ultimate load and a 23% decrease in ultimate deflection. In a similar experimental study, the flexural behavior of RC beams manufactured with different percentages of NS was investigated [ 10 ]. Once more, it was demonstrated that NS concrete beams showed high flexural performance, higher failure load capacity, and enhanced ductility when compared with control beams without NS.…”

Section: Introductionmentioning

confidence: 99%

Shear Strength of Nano Silica High-Strength Reinforced Concrete Beams

El-Mandouh

Kaloop

et al. 2022

Materials

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In this study, the shear strength of sixteen full-scale over-reinforced concrete beams with and without nano silica (NS), constructed from high-strength concrete (HSC), was investigated both experimentally and analytically. Nano silica was used as a partial replacement for Portland cement. According to the NS ratio, the tested beams were divided into four groups: 0%, 1%, 2%, and 3%. Shear span to effective depth (a/d) ratios of 1.5 and 2.5 were used in each group, and two different stirrups ratios (ρv) were employed as 0% and 0.38%. The shear strength provisions used by some international codes, such as the American Concrete Institute (ACI-2019), the Eurocode 2 (EC-2), and the Egyptian Code (ECP 207), were examined when applied to HSC beams with and without NS. The most important factors to consider were the effect of using NS on the shear span to effective depth (a/d) ratio and the shear strength of the beams with and without stirrups. The experimental results were validated using a nonlinear finite element analysis using the computer program ABAQUS. The experimental results showed that increasing the NS ratio reduced the number of cracks, and increased the cracks spacing, as well as reducing crack width. In specimens without stirrups, these effects were more obvious. A rise in the (a/d) ratio increased the number of cracks along the beam length, notably in the mid-span region. For specimens without stirrups and with an (a/d) of 1.5, raising NS from 0% to 1%, 2%, and 3% increased the ultimate load by 13%, 30%, and 39%, respectively, whereas for specimens with an (a/d) of 2.5, the ultimate load increased with approximately the same increase as that in beams with an (a/d) of 1.5 due to using NS. Additionally, the addition of NS to concrete boosted the contribution of the concrete to the shear strength, as shown by the results of beams without stirrups. For specimens with stirrups and an (a/d) of 1.5, raising NS from 0% to 1%, 2%, and 3% increased the ultimate load by 8%, 21%, and 30%, respectively. Additionally, for specimens with stirrups and an (a/d) of 2.5, the ultimate load increased with approximately the same increase as that in beams with stirrups and an (a/d) of 1.5 due to using NS. The test findings indicate that the shear strength calculated using the equations of the ACI 318-19 is more conservative than EC-2 and ECP 207 for NS concrete beams. The finite element program ABAQUS may be successfully used to predict the shear strength of NS concrete beams.

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“…The utilization of Fayalite slag in concrete clinker formation and the impacts of copper slag on the properties of concrete have been examined by numerous analysts [22][23][24]. A few works detailed the mechanical properties of concrete prepared using fayalite slags substitution for sand, and crushed stones show more development than ordinary cement [25][26][27]. For each huge load of copper delivered, roughly 2.2 to 3 tons of slags were created according to a logical estimate.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, it creates an interest in concrete innovation and is relied upon to work on the mechanical properties. The impact of copper slag as a partial substitution for sand on high-performance concrete was examined by different researchers [25][26][27]. As a primer work, an ideal amount of copper slag to be utilized in the research was examined and found as forty percentage substitutions is the perfect material for fine aggregate substitution.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Mechanical Durability Properties of High‐Performance Concrete with Nanosilica and Copper Slag

Kumar

Natarajan

Singh³

et al. 2022

Journal of Nanomaterials

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Mineral admixtures are frequently utilized as cement substitution materials in high-performance concrete (HPC), and so many studies have explored the influence of mineral admixtures on the rheological behavior of HPC. Investigations were done to examine the impact of nanosilica less than 100 nm on HPC by substituting copper slag at a fixed substitution of forty percent for fine aggregate. Concrete samples were cast by substituting cement with nanosilica at (0.5, 1, 1.5, 2, 2.5, and 3) percentages. Examinations on mechanical properties and durability were done on specimens. The above tests demonstrated an increase in water demand because of the increase in the nanosilica substitution percentage. Mechanical and durability properties were improved at a larger rate with the incorporation of nanosilica. The outcomes indicated that colloidal nanosilica is an effective material that enhances the microstructure and acts as a catalyst for pozzolanic activity. The incorporation of nanosilica improves the strength up to two percentage substitution level.

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Behaviour of Nano Silica in Tension Zone of High Performance Concrete Beams

Cited by 7 publications

References 1 publication

Influence of nano silica on impact resistance and durability of fly ash concrete in structural buildings

Influence of nano silica on impact resistance and durability of fly ash concrete in structural buildings

Shear Strength of Nano Silica High-Strength Reinforced Concrete Beams

Investigation on Mechanical Durability Properties of High‐Performance Concrete with Nanosilica and Copper Slag

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