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首页> 外文期刊>Magazine of Concrete Research >Influence of particle packing on elastic properties of concrete
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Influence of particle packing on elastic properties of concrete

机译：颗粒堆积对混凝土弹性性能的影响

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摘要

Concrete is a complex composite material, and thus its main components on a meso-scale should be considered when studying its global elastic properties. As a main ingredient of concrete, aggregate will have an influence on the elastic properties of concrete. The present study considers particle shape and particle packing. The densely packed structure of arbitrary-shaped aggregate is simulated by a concurrent algorithm-based discrete element modelling system. A comparison is made of the data produced by numerical models, either based on arbitrary angularly shaped or spherical particles. This is by means of the finite-element method. The results can be used to evaluate the adequacy of conventional numerical or analytical models based on spherical aggregates. The influences exerted on the elastic properties of concrete by other factors, such as the mechanical and physical properties of the aggregate, the interfacial transition zone (ITZ) and the matrix are also addressed.
机译：混凝土是一种复杂的复合材料，因此在研究其整体弹性时应考虑其细观尺度的主要成分。骨料作为混凝土的主要成分，会对混凝土的弹性产生影响。本研究考虑颗粒形状和颗粒堆积。通过基于并发算法的离散元素建模系统对任意形状的聚集体的密集结构进行了仿真。根据数值模型产生的数据进行比较，这些数据基于任意角度的形状或球形的粒子。这是通过有限元方法进行的。结果可用于评估基于球形聚集体的常规数值或分析模型的适当性。还解决了其他因素对混凝土弹性性能的影响，例如集料的机械和物理性能，界面过渡区（ITZ）和基体。

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  • 来源
    《Magazine of Concrete Research》 |2012年第2期|p.163-175|共13页
  • 作者

    Huan He; Piet Stroeven; Martijn Stroeven; Lambertus Johannes Sluys;

  • 作者单位

    Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands and Post-doctoral Fellow, GeMMe, Minerals Engineenng-Materials-Environment, University of Liege, Liege, Belgium;

    Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands;

    Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands;

    Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, the Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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