Abstract: Concrete structures always suffer multi-durability impacts which can significantly reduce their service lives, such as fatigue loads, corrosion, alkali silica reaction (ASR), freeze-thaw cycles (FTC), condensed water and so on. In addition, those deteriorations are usually coupled simultaneously or sequentially in terms of physical, chemical and mechanical process, which cannot be predicted simply by the design formula. To capture those interactive effects, multi-scale modeling can be beneficial because the chemo-physical mechanisms can be modeled properly at the material level while the nonlinear mechanical performance can be simulated at structural level. This talk introduces such a numerical platform for the abovementioned deteriorations in consideration of the mutually interacting processes. The proposed model attempts to cover the most essential aspects, from thermo-chemo coupling at micro-scale to the poro-mechanical coupling at meso-scale, and finally leads to the coupled fracture of structural concrete at macro-scale. This multi-physical and multi-scale coupling model can provide a platform, on which the coupled complex damages to structural concrete are consistently dealt with for damage assessment of structural concrete.
Keywords: alkali-silica reaction; corrosion; frost damage; poro-mechanical coupling; reinforced concrete

Biography: Dr. Fuyuan Gong graduated from Tsinghua University (China) for his bachelor’s degree, and then got the master’s and Doctor's Degree from Hokkaido University (Japan). After that, Dr. Gong worked as a post-doctor researcher in The University of Tokyo and then moved to Yokohama National University as the Assistant Professor. Currently Dr. Gong is
working as the "ZJU 100 Talents" Professor in College of Civil Engineering and Architecture, Zhejiang University. His research interests includes concrete durability; thermodynamics, poromechanics and micromechanics for porous material; computational modeling; lifetime assessment, etc. In the last 5 years, Dr. Gong has published 26 journal papers which are indexed by SCI and has been selected as the JSPS (Japan Society for the Promotion of Science) Research Fellow (2014 - 2016), and visiting scholar in Princeton University (2012). He has also been awarded the Japan Concrete Institute (JCI) Award in 2014, and “Achievement Award for Young Engineers” by fib (The International Federation for Structural Concrete) in 2017. Currently, Dr. Gong serves as the Associate Editor of Journal of Advanced Concrete Technology (SCI) and International Journal of Structural Engineering (Scopus).