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Bio-Chemomechanics at Finer Scales - A Review

type de publication      communication internationale avec actes publiés
date de publication 2003
auteur(s) Ulm Franz Josef; Constantinides Georgios; Heukamp Franz H.; Silva Emilio C.; Germaine Jack T.; Lemarchand Eric; Hellmich Christian; Bernard Olivier
conférence Euro-C Computational Modelling of Concrete Structures
     dates de 17-03-2003 à 20-03-2003
     lieu Saint Johann im Pongau, Austria
     nom des actes Proceedings of Euro-C 2003
pages 347 – 360
ISBN / ISSN 90-5809-536-3
résumé Concrete, like many other materials (whether man-made, geological or biological), is a highly heterogeneous material with heterogeneities that manifest themselves at multiple scales. As new experimental techniques such as nanoindentation have provided unprecedented access to micro-mechanical properties of materials, it becomes possible to identify the mechanical effects of chemical reactions at the micro-scale, where the reactions occur, and trace these micro-chemo-mechanical effects through upscaling techniques to the macroscale. The focus of this paper is to review recent developments of a micro-mechanics theory which ultimately shall make it possible to capture chemomechanical deterioration processes at the scale where physical chemistry meets mechanics. This is illustrated through application of the theory to early-age concrete, calcium leaching, and finally to biologically mediated deterioration processes in solid materials.
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