Modeling of Ionic Diffusivity for Cement Paste with Solid Mass Fractal Model and Lattice Boltzmann Method

2017 ◽  
Vol 29 (5) ◽  
pp. 04016287
Author(s):  
Yun Gao ◽  
Jinyang Jiang ◽  
Kai Wu
Keyword(s):  
Lattice Boltzmann Method ◽  
Cement Paste ◽  
Lattice Boltzmann ◽  
Fractal Model ◽  
Solid Mass ◽  
Mass Fractal ◽  
Boltzmann Method ◽  
Ionic Diffusivity

scholarly journals Fractal Modeling of Pore Structure and Ionic Diffusivity for Cement Paste

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Yun Gao ◽  
Jin-yang Jiang ◽  
Kai Wu
Keyword(s):  
Pore Structure ◽  
Cement Paste ◽  
Mercury Intrusion Porosimetry ◽  
Fractal Model ◽  
Homogenization Method ◽  
Solid Mass ◽  
Fractal Modeling ◽  
Mass Fractal ◽  
Chloride Migration ◽  
Ionic Diffusivity

Pore structure in cement based composites is of paramount importance to ionic diffusivity. In this paper, pore structure in cement paste is modeled by means of the recently proposed solid mass fractal model. Moreover, an enhanced Maxwell homogenization method that incorporates the solid mass fractal model is proposed to determine the associated ionic diffusivity. Experiments are performed to validate the modeling, that is, mercury intrusion porosimetry and rapid chloride migration. Results indicate that modeling agrees well with those obtained from experiments.

Solid Mass Fractal Model for Pore Structure in Cement Paste

2016 ◽  
Vol 711 ◽  
pp. 1084-1089 ◽  
Author(s):  
Yun Gao ◽  
Song Mu ◽  
Jin Yang Jiang
Keyword(s):  
Pore Structure ◽  
Cement Paste ◽  
Parametric Analysis ◽  
Fractal Model ◽  
Wide Scope ◽  
Solid Mass ◽  
Fractal Approach ◽  
Mass Fractal ◽  
Practical Challenge ◽  
Self Similar

Though discussed a lot, it remains a practical challenge to modeling pore structure in cement paste. The fractal approach shows a great advantage since it allows to generate complex pore structure via simple geometric iterations and to incorporate the wide scope of pores in a self-similar manner. In this paper, the solid mass fractal model is proposed for pore structure in cement paste. The parametric analysis is performed in conjunction with the porosimetric test. It is shown that the proposed solid mass fractal well describes pore structure in cement paste.

scholarly journals Fractal model and Lattice Boltzmann Method for Characterization of Non-Darcy Flow in Rough Fractures

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Yang Ju ◽  
Qingang Zhang ◽  
Jiangtao Zheng ◽  
Chun Chang ◽  
Heping Xie
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Fractal Model ◽  
Darcy Flow ◽  
Boltzmann Method
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