Micromechanical model of concrete creep

Lev Khazanovich, Kairat Tuleubekov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This paper presents a three-dimensional micromechanical model for concrete creep at early age. In this mode, concrete is treated as a two-phase composite material with an aging matrix (cement paste) and inclusions (aggregates). The uniaxial creep behavior of the aging matrix is described by Bazant's solidification theory, which models aging by volume growth of non-aging viscoelastic products of cement hydration. However, the bulk modulus of the matrix is assumed to be time-independent and the inclusion behavior is assumed to be elastic. The Mori-Tanaka scheme is adapted for determining the effective shear and bulk creep operators of the composite material. To enable numerical determination of concrete creep compliance and relaxation functions, continuous integral operators are approximated by matrix operators acting in finite-dimensional spaces. Effective creep operators (which represent overall properties of the composite) are evaluated as rational functions with matrix arguments.

Original languageEnglish (US)
Title of host publicationMechanics and Physics of Creep, Shrinkage, and Durability of Conrete
Subtitle of host publicationA Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013
PublisherAmerican Society of Civil Engineers (ASCE)
Pages227-234
Number of pages8
ISBN (Print)9780784413111
DOIs
StatePublished - 2013
Event9th International Conference on Creep, Shrinkage, and Durability Mechanics: A Tribute to Zdenek P. Bazant, CONCREEP 2013 - Cambridge, MA, United States
Duration: Sep 22 2013Sep 25 2013

Publication series

NameMechanics and Physics of Creep, Shrinkage, and Durability of Conrete: A Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013

Other

Other9th International Conference on Creep, Shrinkage, and Durability Mechanics: A Tribute to Zdenek P. Bazant, CONCREEP 2013
CountryUnited States
CityCambridge, MA
Period9/22/139/25/13

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