A model for in situ grouting with account for particle filtration

Multi-scale modelling of the permeability evolution of fine sands during cement suspension grouting with filtration

“…According to Maghous et al [21] and Saada et al [26], experimental results prove that very low variations of porosity may induce high permeability variations, as the hydraulic access to a pore can be prevented by cement particles filtration without significant porosity reduction. They conclude that it is necessary to look for a phenomenological law, such as the one employed in [25,26], while simple correlations such as Kozeny-Carman relation [23] are considered as inappropriate.…”

Modelling of Permeation Grouting considering Grout Self-Gravity Effect: Theoretical and Experimental Study

“…When grout is injected into the soil, part of cement particles is blocked by skeleton of soil particles, resulting in stagnation and filtration of these cement particles as well as decrease of grout concentration and blockage of the soil pores. e grouting effect is significantly influenced by limited diffusion channels of the grout [28,[45][46][47]. Advances in Materials Science and Engineering 13…”

“…Yoon and El Mohtar [27] proposed a filtration model used to estimate maximum permeation distance in bentonite grouting, and the equation based on yield stress can effectively obtain the maximum distance at a high yield stress. Maghous et al [28] established a macroscopic model where cement grout flows in the porous medium. e model is presented on the basis of the mass balance equations and filtration law, which can be utilized to investigate the behaviors of the radial flow filtration.…”

A filtration model for evaluating maximum penetration distance of bentonite grout through granular soils

“…Particularly, filtration can be the more dominant stoppage mechanism for high-concentration grouts with low yield stresses such as the SPP modified bentonite grouts. Previous studies proposed various macroscopic flow models to simulate the filtration through soils [9,13,29,30]. In these flow models, the pore space of the matrix is represented as a network of cylindrical canals with random sizes.…”