Properties of interfacial transition zones in recycled aggregate concrete tested by nanoindentation

Xiao, J; Li, W; Sun, Z; Lange, DA; Shah, SP

Properties of interfacial transition zones in recycled aggregate concrete tested by nanoindentation

Xiao, J Li, W

Sun, Z Lange, DA Shah, SP

Permalink

Publication Type:: Journal Article
Citation:: Cement and Concrete Composites, 2013, 37 (1), pp. 276 - 292
Issue Date:: 2013-03-01

Closed Access

	Filename	Description	Size
	1-s2.0-S0958946513000085-main.pdf	Published Version	5.46 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Xiao, J	en_US
dc.contributor.author	Li, W https://orcid.org/0000-0002-4651-1215	en_US
dc.contributor.author	Sun, Z	en_US
dc.contributor.author	Lange, DA	en_US
dc.contributor.author	Shah, SP	en_US
dc.date.issued	2013-03-01	en_US
dc.identifier.citation	Cement and Concrete Composites, 2013, 37 (1), pp. 276 - 292	en_US
dc.identifier.issn	0958-9465	en_US
dc.identifier.uri	http://hdl.handle.net/10453/116988
dc.description.abstract	The properties of new Interfacial Transition Zone (ITZ) and old ITZ in Recycled Aggregate Concrete (RAC) were investigated by Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and nanoindentation. From the SEM images, obvious voids and high concentration of calcium hydroxide can be found in both old ITZ and new ITZ in RAC. Based on the nanoindentation study, it is indicated that the thicknesses of old and new ITZs are in the range 40-50 μm and in the range 55-65 μm, respectively. It is also found that the average indentation modulus of old ITZ is 70-80% of that of old paste matrix, while the average indentation modulus of new ITZ is 80-90% of that of new paste matrix. Additionally, the influences of mix proportion, aggregate types and hydration age on the properties of ITZs in RAC are discussed in this study.© 2012 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Cement and Concrete Composites	en_US
dc.relation.isbasedon	10.1016/j.cemconcomp.2013.01.006	en_US
dc.subject.classification	Building & Construction	en_US
dc.title	Properties of interfacial transition zones in recycled aggregate concrete tested by nanoindentation	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	37	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	1202 Building	en_US
utslib.for	0904 Chemical 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	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	37	en_US

Abstract:

The properties of new Interfacial Transition Zone (ITZ) and old ITZ in Recycled Aggregate Concrete (RAC) were investigated by Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and nanoindentation. From the SEM images, obvious voids and high concentration of calcium hydroxide can be found in both old ITZ and new ITZ in RAC. Based on the nanoindentation study, it is indicated that the thicknesses of old and new ITZs are in the range 40-50 μm and in the range 55-65 μm, respectively. It is also found that the average indentation modulus of old ITZ is 70-80% of that of old paste matrix, while the average indentation modulus of new ITZ is 80-90% of that of new paste matrix. Additionally, the influences of mix proportion, aggregate types and hydration age on the properties of ITZs in RAC are discussed in this study.© 2012 Elsevier Ltd. All rights reserved.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/116988