Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete

Abstract This study is aimed to investigate the effect of carbon nanotubes on the properties of lightweight aggregate concrete containing expanded glass and silica aerogel. Combinations of expanded glass (55%) and hydrophobic silica aerogel particles (45%) were used as lightweight aggregates. Carbon...

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Autores principales:	Suman Kumar Adhikary, Žymantas Rudžionis, Simona Tučkutė, Deepankar Kumar Ashish
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c445f53bb7284638bd9d8733c417c01a
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spelling	oai:doaj.org-article:c445f53bb7284638bd9d8733c417c01a2021-12-02T13:50:49ZEffects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete10.1038/s41598-021-81665-y2045-2322https://doaj.org/article/c445f53bb7284638bd9d8733c417c01a2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-81665-yhttps://doaj.org/toc/2045-2322Abstract This study is aimed to investigate the effect of carbon nanotubes on the properties of lightweight aggregate concrete containing expanded glass and silica aerogel. Combinations of expanded glass (55%) and hydrophobic silica aerogel particles (45%) were used as lightweight aggregates. Carbon nanotubes were sonicated in the water with polycarboxylate superplasticizer by ultrasonication energy for 3 min. Study results show that incorporating multi-wall carbon nanotubes significantly influences the compressive strength and microstructural performance of aerogel based lightweight concrete. The addition of carbon nanotubes gained almost 41% improvement in compressive strength. SEM image of lightweight concrete shows a homogeneous dispersal of carbon nanotubes within the concrete structure. SEM image of the composite shows presence of C–S–H gel surrounding the carbon nanotubes, which confirms the cites of nanotubes for the higher growth of C–S–H gel. Besides, agglomeration of carbon nanotubes and the presence of ettringites was observed in the transition zone between the silica aerogel and cementitious materials. Additionally, flowability, water absorption, microscopy, X-ray powder diffraction, and semi-adiabatic calorimetry results were analyzed in this study.Suman Kumar AdhikaryŽymantas RudžionisSimona TučkutėDeepankar Kumar AshishNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Suman Kumar Adhikary Žymantas Rudžionis Simona Tučkutė Deepankar Kumar Ashish Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete
description	Abstract This study is aimed to investigate the effect of carbon nanotubes on the properties of lightweight aggregate concrete containing expanded glass and silica aerogel. Combinations of expanded glass (55%) and hydrophobic silica aerogel particles (45%) were used as lightweight aggregates. Carbon nanotubes were sonicated in the water with polycarboxylate superplasticizer by ultrasonication energy for 3 min. Study results show that incorporating multi-wall carbon nanotubes significantly influences the compressive strength and microstructural performance of aerogel based lightweight concrete. The addition of carbon nanotubes gained almost 41% improvement in compressive strength. SEM image of lightweight concrete shows a homogeneous dispersal of carbon nanotubes within the concrete structure. SEM image of the composite shows presence of C–S–H gel surrounding the carbon nanotubes, which confirms the cites of nanotubes for the higher growth of C–S–H gel. Besides, agglomeration of carbon nanotubes and the presence of ettringites was observed in the transition zone between the silica aerogel and cementitious materials. Additionally, flowability, water absorption, microscopy, X-ray powder diffraction, and semi-adiabatic calorimetry results were analyzed in this study.
format	article
author	Suman Kumar Adhikary Žymantas Rudžionis Simona Tučkutė Deepankar Kumar Ashish
author_facet	Suman Kumar Adhikary Žymantas Rudžionis Simona Tučkutė Deepankar Kumar Ashish
author_sort	Suman Kumar Adhikary
title	Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete
title_short	Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete
title_full	Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete
title_fullStr	Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete
title_full_unstemmed	Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete
title_sort	effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c445f53bb7284638bd9d8733c417c01a
work_keys_str_mv	AT sumankumaradhikary effectsofcarbonnanotubesonexpandedglassandsilicaaerogelbasedlightweightconcrete AT zymantasrudzionis effectsofcarbonnanotubesonexpandedglassandsilicaaerogelbasedlightweightconcrete AT simonatuckute effectsofcarbonnanotubesonexpandedglassandsilicaaerogelbasedlightweightconcrete AT deepankarkumarashish effectsofcarbonnanotubesonexpandedglassandsilicaaerogelbasedlightweightconcrete
_version_	1718392463263006720

Effects of carbon nanotubes on expanded glass and silica aerogel based lightweight concrete

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