Hydro-Mechanical Coupling of Cement-Based Slurry Grouting in Saturated Geomaterials

Haitao Wang, Lei Kou () and Hongkang Zhu
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Haitao Wang: School of Water Conservancy and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
Lei Kou: School of Water Conservancy and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China
Hongkang Zhu: School of Water Conservancy and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China

Mathematics, 2023, vol. 11, issue 13, 1-14

Abstract: A mathematical model is proposed to simulate the fully hydro-mechanical coupling of two-phase cement-based slurry migration in saturated deformable geomaterials from microscopic to macroscopic scale. The mass conservation equations and the momentum balance equations for cement-based slurry and geomaterials are derived based on the thermodynamically constrained averaging theory (TCAT). The Galerkin discretization of the governing equations of hydro-mechanical coupling are developed by the isogeometric analysis (IGA) integrated with the Bézier extraction operator, and the numerical calculation is implemented with the generalized backward Euler method. The presented modeling is verified by comparison of the numerical calculation with the experimental tests, and the pore fluid pressure of the stratum and the slurry concentration of cement-based slurry migration in saturated deformable geomaterials are discussed. The modeling presented provides an effective alternative method to simulate cement-based slurry migration and explore isothermal multiphase coupled problems.

Keywords: cement-based slurry; geomaterials; TCAT; isogeometric analysis; Bézier extraction operator (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2023
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