Numerical modeling of cement grout injection in saturated porous media

A theoretical model for numerical simulation of cement grout injection in saturated porous media is proposed. Grout mix and saturating water are assumed to be miscible such that a single fluid phase needs to be considered. The model is composed of two mass balance equations. The first one reflects the total mass transport of the fluid in the porous medium. T he other one represents the grout transport by advection, diffusion and dispersion within the fluid phase. The final formulation of the problem yield s to a non linear coupled system of equations because of t he dependency of fluid properties with grout concentration. The above time dependant problem is discretized in time and space by finite differences using an implicit backward Euler scheme. Finally numerical results are compared with experimental injection tests performed under uniaxial conditions . See journal paper [hal-01007066]