Bentonite Grouting System for Foundation Work
Specific applications of the Bentonite Grouting System for foundation work:
Sealing leaks in existing concrete and masonry foundations
Anti-seepage reinforcement for foundations of tunnels, sheet pile joints, and underground utility galleries
Underwater grouting for soft foundations of immersed tube tunnels to minimize post-construction differential settlement
Stabilizing loose soil layers and enhancing the overall structural strength of the foundation
Bentonite Grouting System for Foundation Work
The Bentonite Grouting System for Foundation Work is a complete grout preparation and injection solution designed for foundation reinforcement, soil stabilization, borehole grouting and underground construction. The system integrates grout mixing, slurry agitation and continuous pumping into one compact unit, helping contractors prepare stable bentonite or cement-based grout directly at the construction site.
Complete Mixing and Grouting Solution
The bentonite grouting system combines three important working processes:
- High-speed grout preparation
- Continuous slurry agitation
- Controlled grout pumping and injection
The high-shear mixer quickly disperses bentonite powder, cement and other fine materials into water. Its intensive mixing action helps reduce lumps and produces a more homogeneous grout mixture.
After preparation, the finished grout is discharged into the 500L agitator tank. Continuous agitation prevents sedimentation and maintains a stable grout consistency before pumping. The grout pump then transfers the prepared material through the injection pipeline into foundation boreholes, soil layers, rock fissures or underground voids.
Designed for Foundation Reinforcement
Foundation grouting is commonly used to strengthen weak soil, fill underground cavities, reduce water permeability and improve the bearing capacity of the ground. A reliable grout mixing and pumping system is essential for maintaining consistent grout quality throughout the injection process.
This foundation grouting equipment can be used for:
- Building foundation reinforcement
- Micropile installation
- Ground consolidation
- Soil stabilization
- Foundation underpinning
- Anchor and soil-nail grouting
- Borehole injection
- Rock fissure filling
- Underground void filling
- Water-sealing applications
The integrated system supports continuous operation. While grout from the agitator is being pumped into the foundation, another batch can be prepared in the mixer. This working cycle reduces downtime and improves on-site grouting efficiency.
Stable Bentonite and Cement Grout Preparation
Bentonite slurry requires sufficient mixing energy to achieve proper hydration and suspension. Conventional low-speed mixers may leave unmixed powder or produce an unstable slurry that settles quickly.
The high-shear mixing process creates strong turbulence and circulation inside the mixing chamber. This helps disperse bentonite particles more evenly and produces a smooth, pumpable grout suitable for injection work.
The grouting system can process several types of materials, including:
- Bentonite slurry
- Cement grout
- Cement-bentonite grout
- Water-cement slurry
- Fine cement grout
- Clay-based grout
- Selected fluid grouting compounds
The actual pumping output may vary depending on grout viscosity, material formulation, pipeline length, injection depth and borehole conditions.
Foundation Borehole Grouting
In foundation engineering, grout is often injected into drilled boreholes to improve surrounding soil or rock conditions. The grout fills pores, fissures and underground gaps, forming a more stable foundation structure after curing.
The bentonite grout plant for borehole injection provides controlled mixing and continuous material delivery. It is suitable for both temporary sealing slurry and permanent cement-based grouting operations.
Typical borehole applications include:
- Micropile borehole grouting
- Anchor hole filling
- Foundation reinforcement holes
- Geological drilling boreholes
- Dam and embankment injection holes
- Tunnel foundation treatment
- Mining ground stabilization
- Deep foundation construction
Main Technical Configuration
- Mixer capacity: 300 L
- Agitator capacity: 500 L
- Pump output: approximately 100 L/min
- Working pressure: approximately 25–28 bar
- Mixing method: high-shear or colloidal mixing
- System function: mixing, agitating and grout pumping
- Suitable materials: bentonite slurry, cement grout and cement-bentonite grout
- Main application: foundation reinforcement and borehole injection
Advantages of the Bentonite Grouting System
Homogeneous Grout Quality
High-shear mixing helps produce a consistent slurry with fewer lumps and unmixed particles.
Continuous Grouting Operation
The separate mixer and agitator enable grout preparation and pumping to take place at the same time.
Reduced Material Settlement
Continuous agitation keeps bentonite and cement particles suspended before injection.
Compact Integrated Structure
The mixer, agitator and pump are installed together, reducing on-site installation work and pipeline connections.
Reliable Flow and Pressure
The system provides the flow and injection pressure required for many foundation, micropile and borehole grouting projects.
Flexible Material Compatibility
It can handle bentonite slurry, cement grout and mixed cement-bentonite formulations according to project requirements.
Micropile Foundation Applications
Micropiles are frequently used to reinforce existing foundations or construct foundations in restricted areas. During micropile installation, grout must be injected into the drilled hole around the reinforcement bar or steel casing.
This complete grouting station for micropile projects prepares and pumps uniform grout continuously. Stable grout quality helps improve the bond between the micropile and the surrounding ground.
The system is suitable for:
- New micropile foundations
- Existing building underpinning
- Bridge foundation strengthening
- Industrial foundation repair
- Restricted-access foundation construction
- Slope and retaining-wall stabilization
Ground Improvement and Soil Stabilization
The bentonite grouting system can also be used for ground improvement projects. Grout is injected into weak or loose soil to fill pores, reduce permeability or improve ground stability.
Depending on the grout formulation and injection method, the system may support:
- Permeation grouting
- Compaction grouting
- Contact grouting
- Consolidation grouting
- Curtain grouting
- Void-filling grouting
Project engineers should select the appropriate grout formula, injection pressure and flow rate according to soil conditions and engineering requirements.
Why Use a Complete Grouting System?
Using independent mixers, storage tanks and pumps may require more working space, additional pipelines and multiple operators. A complete grout mixer agitator pump unit integrates the main grouting processes into one coordinated system.
This arrangement simplifies equipment installation, reduces material transfer and improves control over grout quality. It is especially useful for foundation contractors, micropile specialists, drilling companies and geotechnical engineering teams.
