Modeling of drying shrinkage of concrete specimens at the meso-level
In this paper, an existing mesomechanical model for cementitious materials is extended to the domain of diffusion-driven phenomena. The model is based on the Finite Element Method, and uses zero-thickness interface elements equipped with a fracture-based constitutive formulation to represent cracks....
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| Veröffentlicht in: | Materials and structures 2011-03, Vol.44 (2), p.415-435 |
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| creator | Idiart, Andrés E. López, Carlos M. Carol, Ignacio |
| description | In this paper, an existing mesomechanical model for cementitious materials is extended to the domain of diffusion-driven phenomena. The model is based on the Finite Element Method, and uses zero-thickness interface elements equipped with a fracture-based constitutive formulation to represent cracks. The new developments presented in this paper consist of the application of the model to the hygro-mechanical coupled analysis of drying shrinkage in concrete specimens, explicitly taking into account the influence of (micro) cracks on the diffusion of moisture. In a first part of the paper, the model is presented in some detail, especially the new aspects regarding moisture diffusion including effects of cracks, and H-M coupling. The model predictions are then quantitatively compared with classical drying shrinkage experiments on concrete specimens. The consideration of different assumptions for the relation linking shrinkage strains and weight losses is discussed in some detail. Finally, the effect of size and volume fraction of the main heterogeneities of concrete on the drying process and drying-induced microcracking is also addressed. |
| doi_str_mv | 10.1617/s11527-010-9636-2 |
| format | Article |
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The model is based on the Finite Element Method, and uses zero-thickness interface elements equipped with a fracture-based constitutive formulation to represent cracks. The new developments presented in this paper consist of the application of the model to the hygro-mechanical coupled analysis of drying shrinkage in concrete specimens, explicitly taking into account the influence of (micro) cracks on the diffusion of moisture. In a first part of the paper, the model is presented in some detail, especially the new aspects regarding moisture diffusion including effects of cracks, and H-M coupling. The model predictions are then quantitatively compared with classical drying shrinkage experiments on concrete specimens. The consideration of different assumptions for the relation linking shrinkage strains and weight losses is discussed in some detail. Finally, the effect of size and volume fraction of the main heterogeneities of concrete on the drying process and drying-induced microcracking is also addressed.</description><identifier>ISSN: 1359-5997</identifier><identifier>ISSN: 0025-5432</identifier><identifier>EISSN: 1871-6873</identifier><identifier>DOI: 10.1617/s11527-010-9636-2</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Applied sciences ; Assaig de materials ; Assaigs de materials ; Building construction ; Building Materials ; Buildings. Public works ; Ciment ; Civil Engineering ; Concrete ; Concretes ; Concretes. Mortars. Grouts ; Diffusion ; Drying ; Engineering ; Enginyeria dels materials ; Exact sciences and technology ; Expansion and contraction ; Fracture mechanics ; General (composition, classification, performance, standards, patents, etc.) ; Joining ; Machines ; Manufacturing ; Materials ; Materials Science ; Mathematical models ; Moisture ; Original Article ; Processes ; Shrinkage ; Solid Mechanics ; Strength of materials (elasticity, plasticity, buckling, etc.) ; Structural analysis. 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The model is based on the Finite Element Method, and uses zero-thickness interface elements equipped with a fracture-based constitutive formulation to represent cracks. The new developments presented in this paper consist of the application of the model to the hygro-mechanical coupled analysis of drying shrinkage in concrete specimens, explicitly taking into account the influence of (micro) cracks on the diffusion of moisture. In a first part of the paper, the model is presented in some detail, especially the new aspects regarding moisture diffusion including effects of cracks, and H-M coupling. The model predictions are then quantitatively compared with classical drying shrinkage experiments on concrete specimens. The consideration of different assumptions for the relation linking shrinkage strains and weight losses is discussed in some detail. Finally, the effect of size and volume fraction of the main heterogeneities of concrete on the drying process and drying-induced microcracking is also addressed.</description><subject>Applied sciences</subject><subject>Assaig de materials</subject><subject>Assaigs de materials</subject><subject>Building construction</subject><subject>Building Materials</subject><subject>Buildings. Public works</subject><subject>Ciment</subject><subject>Civil Engineering</subject><subject>Concrete</subject><subject>Concretes</subject><subject>Concretes. Mortars. Grouts</subject><subject>Diffusion</subject><subject>Drying</subject><subject>Engineering</subject><subject>Enginyeria dels materials</subject><subject>Exact sciences and technology</subject><subject>Expansion and contraction</subject><subject>Fracture mechanics</subject><subject>General (composition, classification, performance, standards, patents, etc.)</subject><subject>Joining</subject><subject>Machines</subject><subject>Manufacturing</subject><subject>Materials</subject><subject>Materials Science</subject><subject>Mathematical models</subject><subject>Moisture</subject><subject>Original Article</subject><subject>Processes</subject><subject>Shrinkage</subject><subject>Solid Mechanics</subject><subject>Strength of materials (elasticity, plasticity, buckling, etc.)</subject><subject>Structural analysis. 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Public works</topic><topic>Ciment</topic><topic>Civil Engineering</topic><topic>Concrete</topic><topic>Concretes</topic><topic>Concretes. Mortars. Grouts</topic><topic>Diffusion</topic><topic>Drying</topic><topic>Engineering</topic><topic>Enginyeria dels materials</topic><topic>Exact sciences and technology</topic><topic>Expansion and contraction</topic><topic>Fracture mechanics</topic><topic>General (composition, classification, performance, standards, patents, etc.)</topic><topic>Joining</topic><topic>Machines</topic><topic>Manufacturing</topic><topic>Materials</topic><topic>Materials Science</topic><topic>Mathematical models</topic><topic>Moisture</topic><topic>Original Article</topic><topic>Processes</topic><topic>Shrinkage</topic><topic>Solid Mechanics</topic><topic>Strength of materials (elasticity, plasticity, buckling, etc.)</topic><topic>Structural analysis. 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| subjects | Applied sciences Assaig de materials Assaigs de materials Building construction Building Materials Buildings. Public works Ciment Civil Engineering Concrete Concretes Concretes. Mortars. Grouts Diffusion Drying Engineering Enginyeria dels materials Exact sciences and technology Expansion and contraction Fracture mechanics General (composition, classification, performance, standards, patents, etc.) Joining Machines Manufacturing Materials Materials Science Mathematical models Moisture Original Article Processes Shrinkage Solid Mechanics Strength of materials (elasticity, plasticity, buckling, etc.) Structural analysis. Stresses Theoretical and Applied Mechanics Àrees temàtiques de la UPC |
| title | Modeling of drying shrinkage of concrete specimens at the meso-level |
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