Comparative investigation on nanomechanical properties of hardened cement paste

Li, W; Kawashima, S; Xiao, J; Corr, DJ; Shi, C; Shah, SP

Comparative investigation on nanomechanical properties of hardened cement paste

Li, W

Kawashima, S Xiao, J Corr, DJ Shi, C Shah, SP

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Publication Type:: Journal Article
Citation:: Materials and Structures/Materiaux et Constructions, 2016, 49 (5), pp. 1591 - 1604
Issue Date:: 2016-05-01

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Field	Value	Language
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215	en_US
dc.contributor.author	Kawashima, S	en_US
dc.contributor.author	Xiao, J	en_US
dc.contributor.author	Corr, DJ	en_US
dc.contributor.author	Shi, C	en_US
dc.contributor.author	Shah, SP	en_US
dc.date.issued	2016-05-01	en_US
dc.identifier.citation	Materials and Structures/Materiaux et Constructions, 2016, 49 (5), pp. 1591 - 1604	en_US
dc.identifier.issn	1359-5997	en_US
dc.identifier.uri	http://hdl.handle.net/10453/105274
dc.description.abstract	© 2015, RILEM. Three types of nanomechanical methods including static nanoindentation, modulus mapping and peak-force quantitative nanomechanical mapping (QNM) were applied to investigate the quantitative nanomechanical properties of the same indent location in hardened cement paste. Compared to the nanoindentation, modulus mapping and peak-force QNM allow for evaluating local mechanical properties of a smaller area with higher resolution. Beside, the ranges of elastic modulus distribution measured by modulus mapping and peak-force QNM are relatively greater than that obtained from nanoindentation, which may be due to a result of the shaper probe and local confinement effect between multiple phases. Moreover, the average value of elastic modulus obtained using peak-force QNM were consistent with those obtained by modulus mapping, while the different in modulus probability distribution could be related to the different nanomechancial theories and contact forces. The probability distributions of elastic modulus measured using nanomechanical methods to provide a basis for the different types of phases existing in cement paste. Based on the observation with high spatial resolution, cement paste can be likely found as nanocalse granular material, in which different submicron scale or basic nanoscale grain units pack together. It indicates that the peak-force QNM can effectively provide an effective insight into the nanostructure characteristic and corresponding nanomechanical properties of cement paste.	en_US
dc.relation	http://purl.org/au-research/grants/arc/DE150101751
dc.relation.ispartof	Materials and Structures/Materiaux et Constructions	en_US
dc.relation.isbasedon	10.1617/s11527-015-0597-3	en_US
dc.subject.classification	Building & Construction	en_US
dc.title	Comparative investigation on nanomechanical properties of hardened cement paste	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	49	en_US
utslib.for	0905 Civil Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CBI - Centre for Built Infrastructure
utslib.copyright.status	closed_access
pubs.issue	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	49	en_US

Abstract:

© 2015, RILEM. Three types of nanomechanical methods including static nanoindentation, modulus mapping and peak-force quantitative nanomechanical mapping (QNM) were applied to investigate the quantitative nanomechanical properties of the same indent location in hardened cement paste. Compared to the nanoindentation, modulus mapping and peak-force QNM allow for evaluating local mechanical properties of a smaller area with higher resolution. Beside, the ranges of elastic modulus distribution measured by modulus mapping and peak-force QNM are relatively greater than that obtained from nanoindentation, which may be due to a result of the shaper probe and local confinement effect between multiple phases. Moreover, the average value of elastic modulus obtained using peak-force QNM were consistent with those obtained by modulus mapping, while the different in modulus probability distribution could be related to the different nanomechancial theories and contact forces. The probability distributions of elastic modulus measured using nanomechanical methods to provide a basis for the different types of phases existing in cement paste. Based on the observation with high spatial resolution, cement paste can be likely found as nanocalse granular material, in which different submicron scale or basic nanoscale grain units pack together. It indicates that the peak-force QNM can effectively provide an effective insight into the nanostructure characteristic and corresponding nanomechanical properties of cement paste.

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http://hdl.handle.net/10453/105274