Compact grout injection plant for sale
2026-09-28 20:22:50
Recently, an Argentine client inquired about a compact grout injection plant, planning an initial purchase of one unit for grouting beneath concrete pavement slabs. The client placed particular emphasis on production capacity and asked if a wheeled configuration could be provided to facilitate relocation between different work sites.
As discussions progressed, the client specified the grout material, pressure, flow rate, and on-site power supply conditions. Based on these requirements, we recommended a compact grout injection plant equipped with a grout mixer, while also matching the pumping system with a mobile chassis configuration.
Equipment Requirements for Sub-Slab Grouting
The client specified a delivery flow rate of 2.5 m³/h and a grouting pressure range of 75–200 psi (approximately 5.2–13.8 bar). Since the equipment is intended for injecting grout beneath concrete pavement slabs, the selection focused on grout supply capacity within the required pressure range and the equipment's mobility during linear construction operations.
For sub-slab grouting, the grout must enter the target space via injection holes and piping. The equipment configuration must align with the on-site grouting process, ensuring delivery requirements are met while allowing for adjustments during injection. Filling voids beneath slabs and lifting pavement are distinct construction objectives; while the client has specified sub-slab grouting as the primary use, the specific control method will be determined based on the project plan.
Compatibility with Cement and Fly Ash Grout Mixes
The client plans to use a grout mixture of Portland cement and fly ash—without sand—at a water-to-cement ratio of approximately 0.35. This mix design information is crucial for selecting the appropriate mixing method and grouting pump.
Given the inclusion of fly ash, further clarification is needed regarding whether the 0.35 ratio refers to water-to-cement or water-to-total-cementitious-materials, as well as the fly ash dosage and the use of any admixtures. These factors influence grout fluidity, dispersion, and pumping resistance. For this type of grout, the mixing system must ensure the powder is fully wetted and uniformly dispersed to minimize clumping; meanwhile, the storage and agitation tank keeps the grout in motion during the injection phase to reduce sedimentation and ensure consistent grout properties for subsequent pumping.
Matching mixing efficiency with the 2.5 m³/h pumping requirement
The client's requirement of 2.5 m³/h equates to approximately 42 L/min. When selecting a grout mixing and injection plant, we consider factors such as batch capacity, feeding and mixing times, effective storage volume, and the injection pump's actual flow rate at the target pressure.
Integrating the mixer, storage/agitation tank, and injection pump allows the preparation of the next batch to overlap with the pumping of the current batch, thereby minimizing downtime. This seamless workflow enhances on-site grout supply efficiency, particularly when performing sequential injections at multiple points beneath road slabs.
Wheeled design for easy relocation across the work area
The client specifically requested a wheeled unit, along with a 380V three-phase power supply and a 10-meter delivery hose. A compact, wheeled grouting station consolidates key equipment, allowing for easy repositioning based on injection point locations and reducing the labor involved in repeatedly moving and reconnecting scattered equipment.
During the final configuration stage, we verify details such as power frequency, hose inner diameter, injection connections, and site ground conditions to ensure the power system, piping, and mobility features align perfectly with project requirements.
As a professional supplier of grouting equipment, we offer selection and customization services for compact grout injection plants tailored to specific grout formulas, flow rates, pressures, and mobility needs—ideal for applications such as concrete pavement grouting, void filling, and foundation treatment.
If you are looking for compact grout injection plant for concrete pavement slab injection, void filling, or foundation treatment, please send your project requirements to info@gaodetec.com to receive equipment configuration recommendations and a quotation.
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