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A platform for research: civil engineering, architecture and urbanism
Coupled Effects of Creep and Alkali-Silica Reaction in Concrete at the Meso-Scale
Concrete degradation is analyzed due to alkali silica reaction (ASR) in combination with creep and shrinkage. Environmental factors such as temperature and relative humidity are included in this study since they accelerate hydration and aging of cement-based materials due to the underlying transport of multiple chemical reaction processes. This study examines the performance of concrete at the meso-scale level of observation where aggregate particles and the embedding hydrated cement paste form interacting continua. Macro-scale numerical analyses are compared with corresponding meso-scale ones, in order to capture the chemo-physical damage and understand the role of the different concrete constituents. For this purpose a 3D fully coupled thermo-hygro-mechanical finite element code developed at Padua University, which treats concrete as a multi-phase material, has been adopted and updated to take into account the effects of ASR expansion in the interface transition zone, the aggregate particles and the hydrated cement based mortar.
Coupled Effects of Creep and Alkali-Silica Reaction in Concrete at the Meso-Scale
Concrete degradation is analyzed due to alkali silica reaction (ASR) in combination with creep and shrinkage. Environmental factors such as temperature and relative humidity are included in this study since they accelerate hydration and aging of cement-based materials due to the underlying transport of multiple chemical reaction processes. This study examines the performance of concrete at the meso-scale level of observation where aggregate particles and the embedding hydrated cement paste form interacting continua. Macro-scale numerical analyses are compared with corresponding meso-scale ones, in order to capture the chemo-physical damage and understand the role of the different concrete constituents. For this purpose a 3D fully coupled thermo-hygro-mechanical finite element code developed at Padua University, which treats concrete as a multi-phase material, has been adopted and updated to take into account the effects of ASR expansion in the interface transition zone, the aggregate particles and the hydrated cement based mortar.
Coupled Effects of Creep and Alkali-Silica Reaction in Concrete at the Meso-Scale
Xotta, G. (author) / Willam, K. J. (author) / Bombasaro, E. (author) / Salomoni, V. A. (author) / Majorana, C. E. (author)
10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures ; 2015 ; Vienna, Austria
CONCREEP 10 ; 466-476
2015-09-18
Conference paper
Electronic Resource
English
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