Validation of international concrete creep prediction models by application to South African concretes

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dc.contributor.author Fanourakis, G. C.
dc.date.accessioned 2012-09-13T08:23:45Z
dc.date.available 2012-09-13T08:23:45Z
dc.date.issued 2011-10
dc.identifier.citation Fanourakis, G C. 2011. Validation of international concrete creep prediction models by application to South African concretes. Journal of the South African Institution of Civil Engineering, 53(2): 23-30. en_US
dc.identifier.issn 1021-2019
dc.identifier.uri http://hdl.handle.net/10210/7734
dc.description.abstract Creep deformation of concrete is often responsible for excessive deflections at service loads which can compromise the performance of a structure. National design codes therefore provide prediction models for the estimation of creep deformation. These models are empirical-based. This paper assesses the accuracy of six international code type models, when compared with the actual strains measured on a range of South African concretes under laboratory control conditions. The models considered are those contained in AS 3600 (2001), AS 3600 (2009), Eurocode EC 2 (2004), GL (2000), GL (2004) and GZ (1993). The results indicate that for the range of concretes tested, the GL (2000) model yielded the most accurate predictions, giving the lowest overall coefficient of variation (ωall) of 31,9%. The least accurate method was the AS 3600 (2009) which yielded an overall coefficient of variation (ωall) of 74,7%. This paper also recommends a new approach to assessing the accuracy of creep models. en_US
dc.language.iso en en_US
dc.publisher South African Institution of Civil Engineering en_US
dc.rights Scielo South Africa. This article is available online: http://www.scielo.org.za/ en_US
dc.subject Concrete deformation en_US
dc.subject Creep deformation en_US
dc.subject Concrete standards en_US
dc.title Validation of international concrete creep prediction models by application to South African concretes en_US
dc.type Article en_US

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