Combined Effect of Nanosilica and Multi-walled Carbon Nanotubes on Properties of Concrete

Sumathi, A.; Thatti, Sumanth Kumar Yadav; Bokkasam, Venkata Revanth; Chevooru, Sakshitha; Shobana, P.

doi:10.1007/978-981-33-4590-4_50

Cited by 2 publications

(2 citation statements)

References 13 publications

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“…In general, steel fbres are recognized for their good bridging efect, better tensile properties, proven impact resistance, and arresting of crack propagation characteristics [38][39][40], and so they can be utilized to enhance the durability characteristics as they help in reducing propagation of cracks. Te diverse mechanical properties of concrete prepared with NS individually and combined with NS and MWCNTs, for various amounts of nanomaterials, diferent curing periods, and incorporation of steel fbres, were discussed by Sumathi et al in their study [41][42][43], and the authors in their research using steel fbres indicated that incorporation of 1% improved the mechanical and structural properties of high-strength concrete. Murali et al [44,45] have tested the impact strength of concrete specimens made with MWCNY and diferent fbres such as short steel fbre, long steel fbre, and polypropylene fbres and have reported that addition of fbres substantially increased the fracture resistance of the specimens.…”

Section: Use Of Steel Fibres Along With Mwcntmentioning

confidence: 99%

Mechanical, Durability, and Microstructure Investigations on High-Strength Concrete Incorporating Nanosilica, Multi-Walled Carbon Nanotubes, and Steel Fibres

Sumathi

Elavarasi

Karthikeyan

et al. 2023

Advances in Materials Science and Engineering

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In present research, the strength properties, impact resistance, and durability characteristics of high-strength concrete blended with nanosilica (NS) and reinforced with multi-walled carbon nanotubes (MWCNTs) are discussed. The proportion consists of nanosilica added in a constant addition of 1% and MWCNT added in a varied dosage of 0.025%, 0.05%, 0.1%, 0.15%, and 0.2% by weight of the cement. A total of 11 mixes were made including the control mix having no MWCNT. The other 10 mixes were categorized into two classes with one class having steel fibres incorporated as 1% of the total volume of the concrete along with the other ingredients such as 1% NS and different proportions of MWCNT. The other class was made without steel fibres retaining only the NS and different MWCNT proportions. Besides the standard compression and tension tests, to determine the energy absorbing capacity of the mix specimens, impact test was also performed. The strength tests were carried out for 3, 7, and 28-day curing. Also, durability tests were carried out with sorptivity, porosity, and mass loss of the specimens when exposed to aggressive HCL and H2SO4 acid. To validate the experiment results, microstructure studies such as scanning electron microscopy (SEM) were also conducted on the samples. Among all mixes, 28-day compressive strength (CS) of 0.2% MWCNT with 1% NS and 1% steel fibre mix was found to increase by 22% compared to control concrete.

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Section: Use Of Steel Fibres Along With Mwcntmentioning

confidence: 99%

Mechanical, Durability, and Microstructure Investigations on High-Strength Concrete Incorporating Nanosilica, Multi-Walled Carbon Nanotubes, and Steel Fibres

Sumathi

Elavarasi

Karthikeyan

et al. 2023

Advances in Materials Science and Engineering

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“…Hence, Epoxy polymers found be various application in manufacturing construction materials to improve their mechanical properties [14][15]. Epoxy has a wide deformation range, great chemical resistance, wear resistance, electrical insulation, and waterproofing capabilities [16][17][18]. The Epoxy used conductive particles in cement matrix to minor the compressive strain in concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Piezo-resistive Properties of Polymer based cement nano composites

AK,

Hunashyal,

Gudagi

et al. 2023

E3S Web Conf.

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The nano technology has potential applications in development self-sensing smart materials. These nano materials is used in cement matrix or polymer base to improve the mechanical and piezo electrical properties of composites. In the present study, the graphene and carbon nano tube are added in matric, which acts as the conductive fibre into polymer cement composites. Cement based polymer composites are prepared by adding carbon fibre, epoxy resin, carbon nano tube and graphene as conductive filler in matrix to prepare the distinctive specimens for experimental investigations. The electro mechanical test are carried out to assess the piezo electrical properties of these composites subjected gradual increase of mechanical loading such as flexural and compression. The present study describes the self-sensing piezo-resistive capability of composite to monitor the strain in structures. The experimental test elucidates the addition of epoxy in cement matrix enhance the mechanical properties while carbon nano tube and graphene proves to be promising smart self-sensing materials in composites by measuring the variation in stress at critical regions. The SEM with EDX analysis shows that epoxy resin act as binding agent which hinder the cracks propagations and improves the mechanical properties of composites.

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Combined Effect of Nanosilica and Multi-walled Carbon Nanotubes on Properties of Concrete

Cited by 2 publications

References 13 publications

Mechanical, Durability, and Microstructure Investigations on High-Strength Concrete Incorporating Nanosilica, Multi-Walled Carbon Nanotubes, and Steel Fibres

Mechanical, Durability, and Microstructure Investigations on High-Strength Concrete Incorporating Nanosilica, Multi-Walled Carbon Nanotubes, and Steel Fibres

Piezo-resistive Properties of Polymer based cement nano composites

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