A mesoscale model based on Monte-Carlo method for concrete fracture behavior study

An aggregate generation and packing algorithm based on Monte-Carlo method is developed to express the aggregate random distribution in cement concrete. A mesoscale model is proposed on the basis of the algorithm. In this model, the concrete con- sists of three parts, namely coarse aggregate, cement...

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Bibliographic Details
Published in:Science China. Technological sciences 2012-12, Vol.55 (12), p.3278-3284
Main Authors: Zhang, NaiLong, Guo, XiaoMing, Zhu, BiBo, Guo, Li
Format: Article
Language:English
Subjects:
Aggregates
Algorithms
Cements
Computer simulation
Concretes
Engineering
Fracture mechanics
Mathematical models
Monte Carlo methods
Monte-Carlo方法
中尺度数值模式
数值模型
断裂
水泥基体
混凝土骨料
蒙特卡罗方法
行为研究
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Summary:An aggregate generation and packing algorithm based on Monte-Carlo method is developed to express the aggregate random distribution in cement concrete. A mesoscale model is proposed on the basis of the algorithm. In this model, the concrete con- sists of three parts, namely coarse aggregate, cement matrix and the interracial transition zone （ITZ） between them. To verify the proposed model, a three-point bending beam test was performed and a series of two-dimensional mesoscale concrete mod- els were generated for crack behavior investigation. The results indicate that the numerical model proposed in this study is helpful in modeling crack behavior of concrete, and that treating concrete as heterogeneous material is very important in frac- ture modeling.
ISSN:1674-7321
1869-1900
DOI:10.1007/s11431-012-5035-y