High-resolution high-speed nanoindentation mapping of cement pastes: Unravelling the effect of microstructure on the mechanical properties of hydrated phases.
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| Title: | High-resolution high-speed nanoindentation mapping of cement pastes: Unravelling the effect of microstructure on the mechanical properties of hydrated phases. |
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| Authors: | Sebastiani, M.1 marco.sebastiani@uniroma3.it, Moscatelli, R.1, Ridi, F.2, Baglioni, P.2, Carassiti, F.1 |
| Source: | Materials & Design. May2016, Vol. 97, p372-380. 9p. |
| Subjects: | Nanoindentation, Microstructure, Hydration, Magnetic properties of metals, Scanning electron microscopy |
| Abstract: | Cementitious materials represent the most used materials in the construction industry. Their strong heterogeneity and multiscale microstructure make the study of the mechanical properties and the in-service behaviour very challenging: new techniques are required by industrial research to better investigate these aspects. In this work a novel technique based on statistical nanoindentation is exploited to obtain results about the microstructure build-up and the mechanical properties. An innovative high-speed nanoindentation method is here combined and compared with a standard nanoindentation procedure in order to get highly consistent statistical results. Combining the high-speed nanoindentation, the statistical deconvolution and SEM/EDS investigations, the main phases present in the tested hydrated cement paste have been characterized. High-resolution maps of the mechanical properties are in good agreement with SEM-EDS results. The evolution of the mechanical properties has been tested over the time and in particular after 1, 3, 5, 7, 14 and 28 days of hydration. It was found that the nano-mechanical properties were almost constant during the hydration time and the evolution of the bulk mechanical resistance properties of the cement paste is found to be due to a variation of the volume proportions between the three principal phases (low-density, high-density and ultra-high-density C–S–H). [ABSTRACT FROM AUTHOR] |
| Copyright of Materials & Design 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: 115069890 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: High-resolution high-speed nanoindentation mapping of cement pastes: Unravelling the effect of microstructure on the mechanical properties of hydrated phases. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Sebastiani%2C+M%2E%22">Sebastiani, M.</searchLink><relatesTo>1</relatesTo><i> marco.sebastiani@uniroma3.it</i><br /><searchLink fieldCode="AR" term="%22Moscatelli%2C+R%2E%22">Moscatelli, R.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ridi%2C+F%2E%22">Ridi, F.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Baglioni%2C+P%2E%22">Baglioni, P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Carassiti%2C+F%2E%22">Carassiti, F.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%26+Design%22">Materials & Design</searchLink>. May2016, Vol. 97, p372-380. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Nanoindentation%22">Nanoindentation</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Hydration%22">Hydration</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+properties+of+metals%22">Magnetic properties of metals</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+electron+microscopy%22">Scanning electron microscopy</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Cementitious materials represent the most used materials in the construction industry. Their strong heterogeneity and multiscale microstructure make the study of the mechanical properties and the in-service behaviour very challenging: new techniques are required by industrial research to better investigate these aspects. In this work a novel technique based on statistical nanoindentation is exploited to obtain results about the microstructure build-up and the mechanical properties. An innovative high-speed nanoindentation method is here combined and compared with a standard nanoindentation procedure in order to get highly consistent statistical results. Combining the high-speed nanoindentation, the statistical deconvolution and SEM/EDS investigations, the main phases present in the tested hydrated cement paste have been characterized. High-resolution maps of the mechanical properties are in good agreement with SEM-EDS results. The evolution of the mechanical properties has been tested over the time and in particular after 1, 3, 5, 7, 14 and 28 days of hydration. It was found that the nano-mechanical properties were almost constant during the hydration time and the evolution of the bulk mechanical resistance properties of the cement paste is found to be due to a variation of the volume proportions between the three principal phases (low-density, high-density and ultra-high-density C–S–H). [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials & Design 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.matdes.2016.02.087 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 372 Subjects: – SubjectFull: Nanoindentation Type: general – SubjectFull: Microstructure Type: general – SubjectFull: Hydration Type: general – SubjectFull: Magnetic properties of metals Type: general – SubjectFull: Scanning electron microscopy Type: general Titles: – TitleFull: High-resolution high-speed nanoindentation mapping of cement pastes: Unravelling the effect of microstructure on the mechanical properties of hydrated phases. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Sebastiani, M. – PersonEntity: Name: NameFull: Moscatelli, R. – PersonEntity: Name: NameFull: Ridi, F. – PersonEntity: Name: NameFull: Baglioni, P. – PersonEntity: Name: NameFull: Carassiti, F. IsPartOfRelationships: – BibEntity: Dates: – D: 05 M: 05 Text: May2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 02641275 Numbering: – Type: volume Value: 97 Titles: – TitleFull: Materials & Design Type: main |
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