A Computer Simulation-Based Method for the Volume Fraction of Capillary Pores
In view of the importance of capillary pores to the physiomechanical properties of cement-based materials, it is essential to determine the volume fraction of capillary pores. The intention of this paper is to present a computer simulation-based method for predicting the volume fraction of capillary pores. By applying the periodic boundary conditions and introducing three physical parameters to quantify the mutual interference between neighboring cement particles, a computer simulation technique for the distribution and hydration of cement particles is described. Based on the simulated microstructure of cement paste, a numerical method is developed for the volume fraction of capillary pores. After verifying the numerical method with the experimental results obtained from the research literature, the effect of the water/cement ratio and the maximum cement diameter on the volume fraction of capillary pores is evaluated in a quantitative manner. It is found that, at a given hydration time, the volume fraction of capillary pores increases with the increase of the water/cement ratio and/or the maximum cement diameter. This paper concluded that the developed numerical method can predict the volume fraction of capillary pores with reasonable accuracy.
Jingsi Huo, Yan Xiao, Zongjin Li and Shuaib Ahmad
J. J. Zheng et al., "A Computer Simulation-Based Method for the Volume Fraction of Capillary Pores", Key Engineering Materials, Vols. 400-402, pp. 957-962, 2009