Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Chemo-mechanical analysis of concrete cracking and degradation due to external sulfate attack: A meso-scale model
Abstract In this paper we focus on the external sulfate attack on concrete specimens at the meso-level. There is nowadays a renewed interest in rationally describing the mechanisms behind expansive processes leading to cracking and spalling of concrete exposed to sulfate solutions. A model is presented for degradation of concrete exposed to external sulfate attack at the meso-level, i.e. representing explicitly in the simulations the main heterogeneities of the material. A previously developed mesomechanical approach has been coupled with a diffusion–reaction analysis at the same scale. It is based on the systematic use of zero-thickness interface elements equipped with fracture-based constitutive laws, and the effect of discrete cracks on the transport of ions is explicitly accounted for. The main results obtained agree qualitatively and quantitatively well with experimental observations in terms of ettringite penetration depth, expansions, crack patterns and spalling effects.
Chemo-mechanical analysis of concrete cracking and degradation due to external sulfate attack: A meso-scale model
Abstract In this paper we focus on the external sulfate attack on concrete specimens at the meso-level. There is nowadays a renewed interest in rationally describing the mechanisms behind expansive processes leading to cracking and spalling of concrete exposed to sulfate solutions. A model is presented for degradation of concrete exposed to external sulfate attack at the meso-level, i.e. representing explicitly in the simulations the main heterogeneities of the material. A previously developed mesomechanical approach has been coupled with a diffusion–reaction analysis at the same scale. It is based on the systematic use of zero-thickness interface elements equipped with fracture-based constitutive laws, and the effect of discrete cracks on the transport of ions is explicitly accounted for. The main results obtained agree qualitatively and quantitatively well with experimental observations in terms of ettringite penetration depth, expansions, crack patterns and spalling effects.
Chemo-mechanical analysis of concrete cracking and degradation due to external sulfate attack: A meso-scale model
Idiart, Andrés E. (Autor:in) / López, Carlos M. (Autor:in) / Carol, Ignacio (Autor:in)
Cement and Concrete Composites ; 33 ; 411-423
04.12.2010
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Chemo-mechanical modelling of the external sulfate attack in concrete
| British Library Online Contents | 2017
Chemo-mechanical modelling of the external sulfate attack in concrete
| Online Contents | 2017
Chemo-mechanical modelling of the external sulfate attack in concrete
| Elsevier | 2016