Autogenous Shrinkage of Concrete at Early Ages

Gowripalan, N

Autogenous Shrinkage of Concrete at Early Ages

Gowripalan, N

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Publication Type:: Conference Proceeding
Citation:: 2020, 37 pp. 269 - 276
Issue Date:: 2020-01-01

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Field	Value	Language
dc.contributor.author	Gowripalan, N https://orcid.org/0000-0001-6930-2056	en_US
dc.date.issued	2020-01-01	en_US
dc.identifier.citation	2020, 37 pp. 269 - 276	en_US
dc.identifier.issn	2366-2557	en_US
dc.identifier.uri	http://hdl.handle.net/10453/138493
dc.description.abstract	© 2020, Springer Nature Singapore Pte Ltd. High Performance Concrete (HPC), particularly high strength concrete mixes (60–100 MPa) containing high cementitious content and low w/b ratios (0.40–0.25) is used for some precast elements. Ultra High Performance Concrete (UHPC) up to 200 MPa containing very high cementitious content and very low w/b ratios (0.25–0.17) is also used for precast and prestressed elements in buildings and bridges. Shrinkage characteristics of HPC and UHPC differ considerably from those of conventional concrete. Due to their high cementitious content and low w/b ratios, the drying shrinkage component is significantly smaller when compared with the autogenous shrinkage component. HPC and UHPC elements, when steam-cured, undergo majority of their shrinkage within a few days of casting. In this paper, mechanisms of autogenous shrinkage of HPC and UHPC at early ages are compared under different curing conditions. Contribution of autogenous shrinkage and drying shrinkage components on the total shrinkage is discussed. At very early ages, plastic shrinkage and plastic settlement cracking and factors affecting them for HPC and UHPC are also outlined.	en_US
dc.relation.isbasedon	10.1007/978-981-13-7603-0_27	en_US
dc.title	Autogenous Shrinkage of Concrete at Early Ages	en_US
dc.type	Conference Proceeding
utslib.citation.volume	37	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
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	37	en_US

Abstract:

© 2020, Springer Nature Singapore Pte Ltd. High Performance Concrete (HPC), particularly high strength concrete mixes (60–100 MPa) containing high cementitious content and low w/b ratios (0.40–0.25) is used for some precast elements. Ultra High Performance Concrete (UHPC) up to 200 MPa containing very high cementitious content and very low w/b ratios (0.25–0.17) is also used for precast and prestressed elements in buildings and bridges. Shrinkage characteristics of HPC and UHPC differ considerably from those of conventional concrete. Due to their high cementitious content and low w/b ratios, the drying shrinkage component is significantly smaller when compared with the autogenous shrinkage component. HPC and UHPC elements, when steam-cured, undergo majority of their shrinkage within a few days of casting. In this paper, mechanisms of autogenous shrinkage of HPC and UHPC at early ages are compared under different curing conditions. Contribution of autogenous shrinkage and drying shrinkage components on the total shrinkage is discussed. At very early ages, plastic shrinkage and plastic settlement cracking and factors affecting them for HPC and UHPC are also outlined.

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http://hdl.handle.net/10453/138493