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Grout mixer for ground engineering application

A grout mixer for ground engineering applications is a critical piece of equipment used to prepare high-quality, homogeneous grouts for soil and rock stabilization, foundation support, water control, and deep excavation projects. These mixers are engineered to handle a wide range of materials—including cement, bentonite, microfine cements, fly ash, polymers, and chemical grouts—with precision and consistency.

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  Content   2025-09-11

Grout mixer for ground engineering working principle:
High-Speed ​​Shear Mixing
A high-shear zone is formed between the rotor and stator. The speed differential (typically 1450 to 12,000 rpm) generates intense shear forces, pulverizing solid particles such as bentonite and cement and evenly dispersing them in the water.
The vortex circulation design ensures a continuous flow of the slurry within the mixing tank, eliminating dead zones and achieving uniform mixing.
Multi-Stage Shear and Particle Size Control
High-end equipment utilizes a multi-stage rotor-stator structure. The slurry passes through multiple shear zones, gradually refining the particle size, ultimately forming a stable slurry with an extremely narrow particle size distribution.
For example, ultra-high-speed shear technology can achieve uniform dispersion of submicron particles (<1μm), significantly improving slurry stability.

bentonite grout mixer for piling works
bentonite grout mixer for piling works

Common grout mixer for ground engineering applications:

Application Purpose Grout Type Used
Soil Nailing & Anchoring Reinforce slopes and retaining walls Cementitious grout (typically 0.5:1 to 0.6:1 w/c ratio)
Jet Grouting (CGI, FGI) Create soil-cement columns for ground improvement High-strength cement slurry, often with bentonite additive
Compensation Grouting Prevent settlement during tunneling Low-shrink, controlled low-strength material (CLSM) or cement-bentonite
Permeation & Fracture Grouting Strengthen weak soils or seal water paths Cement, microfine cement, or chemical (silicate/resin) grouts
Diaphragm / Slurry Walls Trench support during excavation Bentonite or cement-bentonite slurry
Tunneling (TBM & NATM) Face stabilization, backfill grouting Cement, two-component chemical grouts
Ground Freezing Support Seal annular spaces Fast-setting cement or chemical grouts
bentonite slurry mixer
bentonite slurry mixer
small colloidal grout mixer with agitator
small colloidal grout mixer with agitator
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