Characterization of Pore Structure for Permeability Prediction of Cement Based Materials under Frost Attack - the Fractal Approach

被引：7

作者：

Bednarska, Dalia ^{[1
]}

Wieczorek, Alicja ^{[1
]}

Koniorczyk, Marcin ^{[1
]}

机构：

[1] Lodz Univ Technol, Dept Bldg Phys & Bldg Mat, Al Politechn 6, PL-90924 Lodz, Poland

来源：

THERMOPHYSICS 2018 | 2018年 / 1988卷

关键词：

MODEL; DIMENSIONS; POROSITY;

D O I：

10.1063/1.5047599

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The main aim of the paper is to investigate the influence of cyclical temperature changes on the microstructure, mechanical and transport properties of cement-based materials prepared without air-entraining admixtures. The experimental study is performed on cement mortar samples, which are exposed to the freeze-thaw cycles. In order to assess how the frost damage affects the material properties, the gas permeability and mercury intrusion porosimetry tests are performed. Moreover the fractal analysis is conducted for cement mortar microstructure. The fractal dimension values are estimated according to the box counting method. Additionally, the relation between fractal dimension and number of freeze-thaw cycles is proposed. Finally, the values of gas permeability coefficient for particular samples are predicted on the basis of fractal dimension.

引用

页数：8

共 19 条

[1]

[Anonymous], 1988, PNB06250

[2] A geometrical fractal model for the porosity and permeability of hydraulic cement pastes [J].