@inproceedings{74470b7d8bec419dbe40bc4b881f6d0f,
title = "2D CFD-DEM simulations for injection of cement-based grout - The effect of particle adsorption",
abstract = "Grouting is a widely used method to seal and/or reduce permeability of fractured rock masses around underground structures. However, the filtration and penetration mechanism of cement-based grout have not been clarified sufficiently yet due to complicated physical and chemical processes of grouting. Therefore, the grout material and injection parameters such as injection pressure and water/cement ratio (W/C) are usually determined empirically by technical experts at the injection site. In this paper, for better understanding of the penetration and filtration mechanism of cement-based grout through rock fractures, the two-dimensional numerical model of coupled Computational Fluid Dynamics and the Distinct Element Method (CFD-DEM) was developed and the effect of particle adsorption on the filtration and penetration mechanism was numerically investigated. The simulation results clearly show that the effect of particle adsorption on the movement of cement particles and the amount of injected cement particles is significant.",
keywords = "CFD-DEM, Cement-based grout, Grouting, Particle adsorption",
author = "S. Sakakibara and T. Koyama and H. Shimizu",
year = "2014",
month = jan,
day = "1",
language = "English",
series = "ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014",
publisher = "International Society for Rock Mechanics",
pages = "1959--1966",
editor = "Kaneko and Kodama and Shimizu",
booktitle = "ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014",
note = "8th Asian Rock Mechanics Symposium, ARMS 2014 ; Conference date: 14-10-2014 Through 16-10-2014",
}