• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Magazine of Concrete Research >Simulation of air-void system in hardened concrete using a geometrical model
【24h】

Simulation of air-void system in hardened concrete using a geometrical model

机译：用几何模型模拟硬化混凝土中的气隙系统

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this paper, a two-dimensional geometric model is developed to characterise the air-void system in hardened cement paste. This model consists of non-overlapping circular voids of different size classes randomly placed in the cementitious matrix of a specific size. The major output of this model is the distance of a specific void from its nearest neighbour (void-void spacing). The cumulative distribution function of the nearest void-void spacing fits well the Rosin-Rammler model, from which the probability distribution function is derived. The number and distribution of the voids is obtained from the chord length measurement based on the linear-traverse method. The effect of paste content and air-void saturation on the void spacing is investigated to illustrate gradual increase in void spacing with a higher paste content or the partial filling of air voids. This model is validated by the good correlation between the calculated spacing factor and the tensile strain capacity of concrete from length-change measurement.
机译：本文建立了二维几何模型来表征硬化水泥浆中的气孔系统。该模型由随机放置在特定尺寸的水泥基体中的不同尺寸类别的非重叠圆形空隙组成。该模型的主要输出是特定空隙与其最近邻居的距离（空隙间距）。最接近的空隙间距的累积分布函数很好地拟合了Rosin-Rammler模型，由此得出了概率分布函数。空隙的数量和分布是根据基于线性遍历方法的弦长测量获得的。研究了糊剂含量和空隙饱和度对空隙间距的影响，以说明随着较高的糊剂含量或部分填充空隙而空隙间距逐渐增加。通过计算间距因子与长度变化测量得出的混凝土的拉伸应变能力之间的良好相关性，验证了该模型的有效性。

著录项

  • 来源
    《Magazine of Concrete Research》 |2019年第14期|680-689|共10页
  • 作者

    Liu Zhichao; Hansen Will; Wang Fazhou; Zhang Wenqin;

  • 作者单位

    Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Silicate Mat Architectures, Wuhan, Hubei, Peoples R China;

    Univ Michigan, Dept Civil & Environm Engn, Ann Arbor, MI 48109 USA;

    Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Silicate Mat Architectures, Wuhan, Hubei, Peoples R China;

    Wuhan Univ Technol, Sch Mat Sci & Engn, State Key Lab Silicate Mat Architectures, Wuhan, Hubei, Peoples R China;

  • 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
  • 中图分类
  • 关键词

    durability-related properties; modelling; permeability pore-related properties;

    机译：耐久性相关特性;建模;渗透率和孔隙相关特性;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号