Finite element simulation of thermal cracking in massive hardening concrete elements using degree of hydration based material laws |
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| Affiliation: | 1. College of Civil Engineering and Architecture, Zhejiang University of Technology, No.18 Chaowang Rd., Hangzhou, 310014, PR China;2. Civil, Construction, and Environmental Engineering, Iowa State University of Science and Technology, Ames, 50011, IW, United States;3. Department of Civil and Environmental Engineering, University of Illinosis at Urbana-Champaign, Urbana, IL, United States;4. China Energy Engineering Group Co.Ltd, Beijing, 100022, PR China;5. Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Nanhai Ave.3688, Shenzhen, 518060, PR China;1. Department of Environmental Engineering and Architecture, Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan;2. Department of Architecture, Graduate School of Engineering, The University of Tokyo, Japan |
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| Abstract: | In massive hardening concrete elements, early age thermal cracking due to the heat of hydration might occur. At Ghent University, a simulation procedure is developed, based on the degree of hydration as a fundamental parameter. This parameter is related with the microstructural development during cement hydration. Accurate finite element simulations are obtained for the problem of early age thermal cracking, applying a staggered analysis. The time dependent material behaviour is implemented by means of a Kelvin chain. The cracking behaviour is implemented using a smeared cracking approach with non-linear softening behaviour. The results of the model are verified experimentally. |
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