Carbon Nanotube Effect on the Ductility, Flexural Strength, and Permeability of Concrete

Mohsen, Mohamed O.; Ansari, Mohamed S. Al; Taha, Ramzi; Al‐Nuaimi, Nasser; Taqa, Ala Abu

doi:10.1155/2019/6490984

Cited by 50 publications

(21 citation statements)

References 31 publications

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“…Presently, carbon nanotubes are also added to concrete as a nanofiller because they possess a higher surface area and unusual mechanical characteristics. Mohsen et al [94] examined the influence of carbon nanotube utilization on the microstructure, permeability, strain capacity, and flexural strength of concrete. The test results confirmed this nanomaterial increased the concrete beam ductility by approximately 150%.…”

Section: Carbon Nanotubes (Cnts)mentioning

confidence: 99%

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

2021

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At present, nanotechnology is a significant research area in different countries, owing to its immense ability along with its economic impact. Nanotechnology is the scientific study, development, manufacturing, and processing of structures and materials on a nanoscale level. It has tremendous application in different industries such as construction. This study discusses the various progressive uses of nanomaterials in concrete, as well as their related health risks and environmental impacts. Nanomaterials such as nanosilica, nano-TiO2, carbon nanotubes (CNTs), ferric oxides, polycarboxylates, and nanocellulose have the capability to increase the durability of buildings by improving their mechanical and thermal properties. This could cause an indirect reduction in energy usage and total expenses in the concrete industry. However, due to the uncertainties and irregularities in size, shape, and chemical compositions, some nanosized materials might have harmful effects on the environment and human health. Acknowledgement of the possible beneficial impacts and inadvertent dangers of these nanosized materials to the environment will be extremely important when pursuing progress in the upcoming years. This research paper is expected to bring proper attention to the probable effects of construction waste, together with the importance of proper regulations, on the final disposal of the construction waste.

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Section: Carbon Nanotubes (Cnts)mentioning

confidence: 99%

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

2021

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“…The agglomeration of long and large diameter CNTs might adversely affect the compressive strength. [6], [9], [12], [8], [13] Previous literatures have suggested that flexure strengths of 0.03 and 0.08 wt% batches increased by anywhere between 30-40 % with low standard deviations. However, for batches of 0.15% and 2.5% the change was above 100% with high standard deviations.…”

Section: Flexural and Compressive Strengthmentioning

confidence: 99%

A Study on the Impact of Carbon Nanotubes on the Properties of Concrete

Srivastava¹,

Chandra²,

Awasthi³

et al. 2021

International Journal of Civil Engineering and Technology (Ijciet)

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Ordinary concrete is widely used in construction engineering due to its high compressive strength, low cost and abundance in raw material. However, the main problem of plain concrete is weak in resistance to tensile loads; constituting a major restriction to its usage. Carbon Nanotubes (CNTs) tend to be most aspirational Nano material having favorable mechanical properties and developed aspect ratio, for reinforcing cementitious elements which are weak in tension. Nevertheless, CNTs may agglomerate within the cement matrix due to high Van der waals forces, resulting in low enhancement or even deterioration of concrete. Therefore, the objective of this literature survey is to summarize the past experimental data on the properties of concrete with carbon nanotubes. The prime objective is to identify the optimum content of CNT in concrete for improving the Compressive and Flexural strength of concrete. The Optimum Content of CNT in the concrete is the most important parameter that highly influences its mechanical properties, workability, durability and various other properties.

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“…Este comportamiento, según lo indicado por la Ref. [42] está relacionado con la mejora de las propiedades mecánicas del concreto por la adición del NTC, produciendo un compuesto más denso con mayor resistencia y capacidad de deformación.…”

Section: Resistencia a La Tracciónunclassified

Concreto de baja permeabilidad para pilotes prefabricados de muelles construidos en zonas de salpicaduras y mareas utilizando nanotubos de carbono de pared múltiple

Hinostroza¹,

Nieto²,

Rodríguez³

et al. 2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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Due to the importance of the maritime structures, it is required that the concrete with which they are manufactured guarantees their impermeability against the waters of the sea, being the piles of the docks those that suffer different anomalies when being in direct contact with the sulfates and chlorides, that progressively degrade it mainly causing its cracking. Carbon Nanotubes (NTC) have a large specific surface that affects the cement matrix by modifying hydrated calcium silicates, producing greater cohesion and consequently increasing the compactness of concrete. The present work seeks to reduce the permeability of the concrete of the prefabricated piles of the springs located in areas of splashes and tides, studying for it different physical and mechanical properties and economic viability of concrete with NTC; The results indicate that settlement decreases, the compressive, tensile and flexural strengths increase, the water penetration depth decreases and the cost per m 3 is higher. Keywords-Carbon nanotubes, breakwater piers, marine environment, prefabricated piles, concrete fissures.

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Carbon Nanotube Effect on the Ductility, Flexural Strength, and Permeability of Concrete

Cited by 50 publications

References 31 publications

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

A Study on the Impact of Carbon Nanotubes on the Properties of Concrete

Concreto de baja permeabilidad para pilotes prefabricados de muelles construidos en zonas de salpicaduras y mareas utilizando nanotubos de carbono de pared múltiple

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