An experimental study on mechanical and thermal properties of structural lightweight concrete using carbon nanotubes (CNTs) and LECA aggregates after exposure to elevated temperature.
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| Title: | An experimental study on mechanical and thermal properties of structural lightweight concrete using carbon nanotubes (CNTs) and LECA aggregates after exposure to elevated temperature. |
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| Authors: | Shahpari, Mehran1 (AUTHOR), Bamonte, Patrick1,2 (AUTHOR) patrick.bamonte@polimi.it, Jalali Mosallam, Shahram3 (AUTHOR) |
| Source: | Construction & Building Materials. Sep2022, Vol. 346, pN.PAG-N.PAG. 1p. |
| Subjects: | Lightweight concrete, Thermal properties, Reinforced concrete, Carbon nanotubes, High temperatures, Thermal conductivity |
| Abstract: | • The effects of high temperature on LWC with carbon nanotubes (CNTs) and structural LECA as coarse aggregates are investigated • The addition of CNTs to LWC brings in an improvement of the tensile properties at high temperature • LWC containing CNTs exhibits a lower thermal conductivity, to the advantage of the insulating power of concrete in fire The effects of elevated temperature on lightweight structural concrete (LWC) containing Carbon Nanotubes (CNTs) and structural Lightweight Expanded Clay Aggregates (LECA) as a substitute for coarse aggregates are investigated. Mechanical properties such as compressive, indirect tensile strength (in splitting and bending) of a 7-day and 28-day structural LWC (with and without CNTs) have been evaluated under different temperature ranges from ambient temperature up to 800 °C. Moreover, in order to capture all aspects, along with characterizing the mechanical response of the concrete, thermal conductivity has also been measured to understand the thermal behavior of structural lightweight concrete. Hereafter, to bring together different results so that the similarities and differences can be seen, each achieved result from present research has been compared to that of literature. Results indicate that all mechanical properties of the structural LWC containing CNTs were improved at different temperatures compared to those without CNTs. The reasons for the improvement were interpreted by Scanning Electron Microscope (SEM). Moreover, thermal test results demonstrate a decrease in thermal conductivity to the advantage of possible high-temperature applications. [ABSTRACT FROM AUTHOR] |
| Copyright of Construction & Building Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 158389524 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: An experimental study on mechanical and thermal properties of structural lightweight concrete using carbon nanotubes (CNTs) and LECA aggregates after exposure to elevated temperature. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Shahpari%2C+Mehran%22">Shahpari, Mehran</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bamonte%2C+Patrick%22">Bamonte, Patrick</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> patrick.bamonte@polimi.it</i><br /><searchLink fieldCode="AR" term="%22Jalali+Mosallam%2C+Shahram%22">Jalali Mosallam, Shahram</searchLink><relatesTo>3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Construction+%26+Building+Materials%22">Construction & Building Materials</searchLink>. Sep2022, Vol. 346, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Lightweight+concrete%22">Lightweight concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+properties%22">Thermal properties</searchLink><br /><searchLink fieldCode="DE" term="%22Reinforced+concrete%22">Reinforced concrete</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+nanotubes%22">Carbon nanotubes</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: • The effects of high temperature on LWC with carbon nanotubes (CNTs) and structural LECA as coarse aggregates are investigated • The addition of CNTs to LWC brings in an improvement of the tensile properties at high temperature • LWC containing CNTs exhibits a lower thermal conductivity, to the advantage of the insulating power of concrete in fire The effects of elevated temperature on lightweight structural concrete (LWC) containing Carbon Nanotubes (CNTs) and structural Lightweight Expanded Clay Aggregates (LECA) as a substitute for coarse aggregates are investigated. Mechanical properties such as compressive, indirect tensile strength (in splitting and bending) of a 7-day and 28-day structural LWC (with and without CNTs) have been evaluated under different temperature ranges from ambient temperature up to 800 °C. Moreover, in order to capture all aspects, along with characterizing the mechanical response of the concrete, thermal conductivity has also been measured to understand the thermal behavior of structural lightweight concrete. Hereafter, to bring together different results so that the similarities and differences can be seen, each achieved result from present research has been compared to that of literature. Results indicate that all mechanical properties of the structural LWC containing CNTs were improved at different temperatures compared to those without CNTs. The reasons for the improvement were interpreted by Scanning Electron Microscope (SEM). Moreover, thermal test results demonstrate a decrease in thermal conductivity to the advantage of possible high-temperature applications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Construction & Building Materials is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.conbuildmat.2022.128376 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Lightweight concrete Type: general – SubjectFull: Thermal properties Type: general – SubjectFull: Reinforced concrete Type: general – SubjectFull: Carbon nanotubes Type: general – SubjectFull: High temperatures Type: general – SubjectFull: Thermal conductivity Type: general Titles: – TitleFull: An experimental study on mechanical and thermal properties of structural lightweight concrete using carbon nanotubes (CNTs) and LECA aggregates after exposure to elevated temperature. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Shahpari, Mehran – PersonEntity: Name: NameFull: Bamonte, Patrick – PersonEntity: Name: NameFull: Jalali Mosallam, Shahram IsPartOfRelationships: – BibEntity: Dates: – D: 05 M: 09 Text: Sep2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 09500618 Numbering: – Type: volume Value: 346 Titles: – TitleFull: Construction & Building Materials Type: main |
| ResultId | 1 |
