首页> 外文期刊>Magazine of Concrete Research >Analytic modelling and experimental study of the porosity and permeability of a porous medium-application to cement mortars and granitic rock
【24h】

Analytic modelling and experimental study of the porosity and permeability of a porous medium-application to cement mortars and granitic rock

机译:多孔介质孔隙率和渗透率的解析模型与实验研究-在水泥砂浆和花岗岩中的应用

获取原文
获取原文并翻译 | 示例
       

摘要

In this work, an analytic relationship between the permeability and porosity of a porous material is developed. This modelling is based on the use of a statistical pore size distribution, which is first used to establish an analytic expression for the porosity in relation to an average pore radius and a location parameter. Two types of measure- ment were performed on three cement mortars and a granitic rock: mercury intrusion porosimetry measurements so as to adjust parameters of the distribution law and deduce the 'theoretical' permeability from the model, and direct water permeability measurements by the application of the Darcy law so as to validate the analytic model. Globally, the 'experimental' permeabilities obtained were inferior to those calculated. The main explanation for these differences may be in the fact that in the calculation of the permeability, all types of pores are taken into account, and not only 'pores which are the only ones responsible for the flow in porous materials.
机译:在这项工作中,开发了多孔材料的渗透率和孔隙率之间的解析关系。该建模基于统计孔径分布的使用,该统计孔径分布首先用于建立与平均孔径和位置参数有关的孔隙度的解析表达式。在三个水泥砂浆和一个花岗岩上进行了两种类型的测量:压汞法测量孔隙度,以调整分布规律的参数并从模型中推导“理论”渗透率,并通过使用达西定律,以验证分析模型。在全球范围内,获得的“实验”渗透率不如计算得出的渗透率。这些差异的主要解释可能是因为在计算渗透率时,要考虑所有类型的孔,而不仅仅是“孔”是造成多孔材料流动的唯一原因。

著录项

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