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Early-age experimental characterization and semi-analytical modeling of elasticity and creep of polymer-modified cement pastes

Author(s): Luise Göbel, Bernhard Pichler, Andrea Osburg
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 1
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 355-360
Total Pages: 6
Language : English

Abstract: Polymer-modified concretes (PCC) exhibit a larger ductility, improved adhesion to substrates, and higher impermeability than conventional cementitious materials. Still, these favorable properties go hand in hand with both a smaller elastic stiffness and a more pronounced creep activity. The reliable prediction of the elastic and creep behavior of PCC is fundamental for a more general description of the influence of polymers in cement-based materials. The present contribution is devoted to a comprehensive experimental analysis of elasticity and creep of polymer-modified cement pastes at early ages. In order to quantify the development of elastic and creep properties quasi-continuously from the first day after production up to material ages of eight days, polymer-modified cement pastes were subjected to hourly-repeated three-minutes-long creep tests, following the test protocol of [Irfan-ul-Hassan et al., CemConRes, 2016]. The elaborated experimental database motivates its exploitation in form of multiscale modeling based on continuum micromechanics. This requires the extension of existing multiscale methods for the homogenization of elastic stiffness and creep, whereby elasticity is the first main focus.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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