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Numerical modeling of compression behavior of foam concrete using representative volume element

机译：代表性体积元素泡沫混凝土压缩行为的数值模拟

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Foam concrete is an economical structural material in cast-in place and precast construction techniques. The microstructural of foam concrete is very complex due to random distribution of air voids. Previous experiments have shown significant effect of air void content and distribution on the compression behavior of foam concrete. While sufficient experimental characterization have conducted on foam concrete, limited theoretical investigations have been carried out to model the complex microstructure of foam concrete. In this paper, numerical modeling approach is proposed to simulate the behavior of foam concrete using Representative Volume Element (RVE) technique. A Finite element (FE) model was first developed and validated using available data in literature. The FE model was then extended to study the effect of several parameters on the behavior of foam concrete. Simulations results show significant effect of air void distribution and compressive strength of mortar on the compression behavior of foam concrete. In general, the simulations show that RVE technique can be used as a powerful tool for modeling the compression behavior of foam concrete.
机译：泡沫混凝土是一种经济的结构材料和预制施工技术。由于空隙的随机分布，泡沫混凝土的微观结构非常复杂。以前的实验表明空隙含量和分布对泡沫混凝土压缩行为的显着影响。虽然在泡沫混凝土上进行了足够的实验表征，但已经进行了有限的理论研究以模拟泡沫混凝土的复杂微观结构。本文采用了数值建模方法来模拟泡沫混凝土的特性（RVE）技术的行为。首先使用文献中的可用数据开发和验证有限元（FE）模型。然后扩展了FE模型以研究几个参数对泡沫混凝土行为的影响。仿真结果表明，砂浆空隙分布和抗压强度对泡沫混凝土压缩行为的显着影响。通常，仿真表明，RVE技术可用作建模泡沫混凝土压缩行为的强大工具。

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