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Injection pump and mixer

An injection pump and mixer system is a critical setup used in various engineering applications such as tunneling, mining, construction, geotechnical works, and oil & gas operations. It is designed to mix grout or chemical solutions and then pump them under pressure into soil, rock formations, concrete structures, or behind tunnel linings for purposes like:
Soil stabilization, Crack sealing, Water cutoff, Void filling, Reinforcement of foundations.

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  Content   2025-05-30

A grout injection pump and mixer system delivers precise, high-pressure placement of grouts for soil stabilization, structural repair, tunneling, and foundation work.

Grout plant for tunnel project
Grout plant for tunnel project

Benefits of Using an Injection Pump and Mixer System:
Precise Injection: Controlled pressure and volume ensure accurate placement
Improved Safety: Stabilizes ground and structures
Cost Efficiency: Prevents expensive repairs and delays
Versatility: Works with various grouts: cement, resin, chemical
High Durability: Long-lasting structural reinforcement
Automation Ready: Integrates with monitoring and TBM systems

colloidal mixer agitator with pump
colloidal mixer agitator with pump

Working principle of injection pump and mixer:

  1. Material Preparation: Dry materials (cement, bentonite, etc.) and liquids (water, additives) are loaded.
  2. Mixing: The mixer blends ingredients into a homogenous slurry or paste.
  3. Transfer: Mixed grout is transferred to a holding tank or directly to the pump.
  4. Pressurization: The injection pump pressurizes the grout.
  5. Injection: Grout is injected through drilled holes or ports into the ground/structure.
  6. Flushing: After use, the system is flushed to avoid clogging.
injection unit for cementitious grout
injection unit for cementitious grout

 

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