Effect of carbon nanotubes on properties of cement mortars

Siddique, Rafat; Mehta, Ankur

doi:10.1016/j.conbuildmat.2013.09.019

Cited by 241 publications

(106 citation statements)

References 25 publications

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“…The carbon atoms in CNTs are arranged in a periodic hexagonal manner with a cylindrical shell shape and are classified as single-walled nanotubes (SWNTs) or multi-walled nanotubes (MWNTs) [11]. Recently, Mehta's group published a review on the consequences of CNTs on the properties of cement mortars, which evidently shows that numerous attempts have been made by various authors towards enhancing the compressive strength, flexural strength, microstructure, Young's modulus, and porosity of cement-CNT composites [12]. The effect of the addition of CNTs to cement-based materials was also investigated to effectively change their brittleness and developmaterialswith superlative mechanical properties [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Hydration Phenomena of Functionalized Carbon Nanotubes (CNT)/Cement Composites

Balasubramaniam

Mondal

Ramasamy

et al. 2017

Fibers

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Abstract:The exciting features of carbon nanotubes (CNTs), such as high elastic modulus, high thermal and electrical conductivities, robustness, and nanoscopic surface properties make them attractive candidates for the cement industry. They have the potential to significantly enhanceengineering properties. CNTs play an important and critical role as nano-anchors in concrete, which enhance the strength by bridging pores in the composite matrix, thereby ensuring robust mechanical strength. The diameter, dispersion, aspect ratio, and interfacial surface interaction of CNTs affect the physical and mechanical properties of concrete, if due care is not taken. In this paper, the usable amount of CNT is scaled down considerably from 0.5% to 0.025% by weight of the cement and the fluctuation caused by these phenomena is assessed. It is observed that the properties and exact quantities of incorporated CNTs influence the hydration and consistency of the composites. In order to address these issues, the surface functionalization of CNTs and rheological studies of the composites are performed. The hydration products and functional groups are carefully optimized and characterized by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and a Zeta potential analyzer. For Mixes 6 and 7, the compressive and tensile strength of CNTs incorporated in mortar specimens caused 77% and 48% increases in split tensile strength, respectively, and 17% and 35% increases in compressive strength, respectively, after 28 days of curing and compared withthe control Mix.

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Section: Introductionmentioning

confidence: 99%

Hydration Phenomena of Functionalized Carbon Nanotubes (CNT)/Cement Composites

Balasubramaniam

Mondal

Ramasamy

et al. 2017

Fibers

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“…by Raki et al, 2010;Sanchez and Sobolev, 2010;Siddique and Mehta, 2014). CNTs can be added to concrete, but their commercial application is less advanced than might first appear from the literature (Table 4).…”

Section: Concretementioning

confidence: 99%

Nanomaterials in construction – what is being used, and where?

Jones

Gibb

Goodier

et al. 2019

Proceedings of the Institution of Civil Engineers - Constructio

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Identifying where nanomaterials are present in construction materials is challenging. Academic literature reports what nanotechnology can offer construction, but this can differ from the reality of what is currently in use.Furthermore, it is difficult to source accurate information regarding nano-enabled products on the market; under current legislation, the declaration of nano content is voluntary and there is no requirement to provide details within safety data sheets. Although publically available information remains opaque and incomplete, several studies and reports have attempted to clarify this situation. This research builds on this information, presenting an overview of the nano-enabled products currently available for use in construction. This is based on the literature, manufacturers' published information and on discussions with suppliers and end users. Concrete, glass and coatings are the most widely available nano-enabled products, together with insulation and special steels. The precise nanomaterial used in each case however, and the form and quantity involved can be difficult to identify. This makes assessing the risks difficult, which is problematic, as some nanomaterials are considered to be hazardous. More detailed information regarding commercially available products will be important if risks are to be managed, enabling the industry to take full advantage of the benefits of nanotechnology.

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“…This change of affirmation is basically proportionate to the development of locale thickness and thusly mass, and can offer no weight advantage. In this way, in protected vehicle diagram the two other rule effects of inclining have been the manner of thinking to apply slanted support [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…In any case, these effects are immovably dependent on the correct defensive layer materials used and the qualities of the shot hitting it: inclining may even incite an unrivalled passageway. Formed charge warheads may disregard to invade and even detonate when striking defensive layer at a sideways edge [9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Research Paper in Literature of Increasing Thickness by Inclined Target

Randjbaran¹,

Zahari²,

Majid³

et al. 2019

Int. J. Eng. Sci. Tech

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This paper displays the discoveries of the scientists about the impacts of slanted protection in ballistic effect resistance. The rule favoured stance to ascertaining the cautious layer of a composite plate is that it assembles the Line-of-Sight (LOS) thickness of the plate. Another favoured viewpoint of having slanted fortification is that it has a much higher plausibility of diverting shots than a vertical plate of tantamount thickness.

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Effect of carbon nanotubes on properties of cement mortars

Cited by 241 publications

References 25 publications

Hydration Phenomena of Functionalized Carbon Nanotubes (CNT)/Cement Composites

Hydration Phenomena of Functionalized Carbon Nanotubes (CNT)/Cement Composites

Nanomaterials in construction – what is being used, and where?

Research Paper in Literature of Increasing Thickness by Inclined Target

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