Electric grouting plant for dam cement grouting issues
Designed to meet the stringent requirements of dam foundation grouting, this electric grouting plant integrates high-speed slurry preparation, low-speed mixing and high-pressure pumping into a single system, specifically engineered for continuous curtain grouting and consolidation grouting operations.
Designed to meet the stringent requirements of dam foundation grouting, this electric grouting plant integrates high-speed slurry preparation, low-speed mixing and high-pressure pumping into a single system, specifically engineered for continuous curtain grouting and consolidation grouting operations.

Below is a detailed technical analysis and an overview of the advantages of selecting this model:
The effectiveness of grouting depends on the slurry’s ability to effectively fill cracks of varying widths. Our electric grouting plant is equipped with an 11 kW vertical piston pump, featuring stepless adjustment, offers two practical operating modes, enabling a single machine to cover the entire process:

Low-pressure, high-flow mode (50 bar / 75 L/min): Used for rapidly filling wide-opening fissures, caverns or voids in rock masses or rockfill embankments. The high flow rate carries the grout to great depths, rapidly establishing an initial sealing barrier and significantly improving construction efficiency.
High-pressure, low-flow mode (100 bar / 38 L/min): Used for splitting and filling closed, micro-cracks. Under high pressure, the grout seeps into microscopic fissures in the rock at a slow and steady rate, ensuring the integrity of the rock mass and an extremely low permeability (Lugeon value) after grouting—a critical factor in the success of dam seepage control.
Interruptions are the greatest concern during grouting—once the pump stops, slurry sedimentation can easily lead to a sudden rise in pressure or blockages in the piping. We electric grouting plant utilise a separate 300-litre slurry preparation tank and a 300-litre storage and mixing tank to achieve a dynamic balance between preparation and pumping:

High-speed grout mixing tank (7.5 kW / 1,450 rpm): High rotational speed generates powerful vortices, ensuring that cement particles are thoroughly sheared and dispersed. For grout with a water-to-cement ratio ranging from 0.5 to 1.0, this achieves an ideal state of uniformity without ‘clumping’ or lumps, guaranteeing grout quality at source.
Low-speed storage and mixing tank (1.5 kW / 36 rpm): Gentle agitation effectively prevents cement particles from settling whilst avoiding the incorporation of excessive air, which could cause fluctuations in slurry density. Acting as a ‘buffer tank’, it constantly supplies the piston pump with an adequate volume of homogeneous slurry, allowing the operator to continue pumping without interruption whilst adding material to the mixing tank, thereby enabling truly continuous 24-hour grouting operations.
Choosing our electric grouting plant means equipping your dam foundation waterproofing project with a reliable, efficient and easy-to-maintain core set of slurry preparation and grouting equipment. Should you require further technical specifications or advice on selecting the appropriate model for your specific operating conditions, please do not hesitate to contact us.