| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| The Hydration Model of Ultra-high Performance Cementitious Materials Based on the Shrinking-core Model |
| CHEN Qing1, WANG Hui1, JIANG Zhengwu1, ZHU Hehua2, MA Rui1
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1 Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, Tongji University, Shanghai 201804
2 State Key Laboratory of Disaster Reduction in Civil Engineering, College of Civil Engineering, Tongji University, Shanghai 200092 |
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Abstract The hydration process of cementitious materials play an important role in determining the material’s microstructure formation and properties. Compared to the normal concrete, the hydration process of ultra-high performance cementitious materials is different due to the special components and production process. Taking superplasticizers, water to binder ratios, silica fume and temperatures into consideration, the compensation factors were proposed and an improved kinetics hydration model was established based on the shrinking-core model. The modified and unmodified model was employed to study differences of the hydration process. The model predicting results were compared with the experimental results. Results show that the proposed model is capable of simulating the hydration process of ultra-high performance cementitious materials well.
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Published: 28 April 2019
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51508404, 51478348, 51278360, 51308407, U1534207) |
| About author:: Qing Chen, received his Ph.D. degree in June 2014 from Tongji University in tunnel and underground construction engineering. He is currently an associate professor of Tongji University, focusing on the research of intelligent and high performance concrete and its multi-scale analysis.; Zhengwu Jiang, received his Ph.D. degree in mate-rials from Tongji University in June 2002. He is a professor in Tongji University and mainly engaged in sustainable cement-based materials, high-performance concrete and special concrete, self-repairing materials and methods, concrete design theory and technology under extreme conditions. |
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2019, Vol. 33 
