A multi-scale percolation-based approach for the prediction of elasticity of early-age cement paste

被引:6
作者
Zhao, Haitao [1 ]
Wu, Shengxing [1 ]
Huang, Donghui [2 ]
Chen, Xudong [1 ]
Zhao, Lanhao [3 ]
机构
[1] Hohai Univ, Coll Civil & Transporting Engn, Nanjing, Jiangsu, Peoples R China
[2] China Three Gorges Corp, Beijing, Peoples R China
[3] Hohai Univ, Coll Water Conservancy & Hydropower, Nanjing, Jiangsu, Peoples R China
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
multi-scale; percolation; microstructure; elasticity; early age; cement paste; CALCIUM SILICATE HYDRATE; MECHANICAL-PROPERTIES; COMPOSITE-MATERIALS; MICROSTRUCTURE; MODEL; CONCRETE; NANOINDENTATION; STRENGTH;
D O I
10.1080/19648189.2013.834602
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
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.
引用
收藏
页码:S304 / S320
页数:17
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