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Abstract
As an evolving component of concrete, cement paste plays an important role in the mechanical properties of concrete. Cement paste has a random, complex and multi-scale composite structure and has mechanical characteristics that undergo rapid changes at early ages. This paper focuses on the evolution of the elasticity (e.g. Young’s modulus and Poisson’s ratio) of cement paste during hydration. The cement hydration model CEMHYD3D was used to capture an accurate cement paste microstructure. This paper proposed a homogenisation method that combined the percolation algorithm with the intrinsic elastic properties of the individual phases of the cement paste. Model results are accordance with experimental data and other numerical results in the literature.
Acknowledgements
The authors gratefully acknowledge the National Natural Science Foundation of China (Grant No. 51309090), the financial support of the Opening Foundation of China Institute of Water Resources and Hydropower Research (Grant No. IWHRKF2010014), the Fundamental Research Funds for Central Universities (Grant No. 2010B04314) and China Postdoctoral Science Foundation (Grant No. 2013M531268). Dr D.P. Bentz and Dr E.J. Garboczi are acknowledged for their CEMHYD3D hydration model.
