Filling voids and loosened zones
Select injection points for the assessed spaces. Expansion and confinement of foam growth must be assessed under the conditions of the task.
SOIL AND FOUNDATIONS
GeoPolymer.55
Two-component PU foam for soil stabilisation, void filling and controlled levelling and lifting of structures.
| Product / pump | PU foam A + B; delivery through a 2K pump |
|---|---|
| A : B ratio | 100 : 100 by volume; 100 : 116 by weight |
| Free-rise foam density | 55 kg/m³ — laboratory value |
| Compression at 10% deformation | 260 kPa according to the TDS; foam specimen parameter |
| Start / gelation at 20°C | 9 s / 55 s |
Technical data
Read values together with the temperature, material state and test conditions.
| Viscosity of A / B at 23°C | 300 ± 50 / 200 ± 50 mPa·s |
|---|---|
| Density of liquid A / B at 23°C | 1.06 ± 0.05 / 1.23 ± 0.05 g/cm³ |
| Core / free-rise foam density | 45 / 55 kg/m³ |
| Compression at 10% deformation | 260 kPa; laboratory conditions |
| Times at 20°C | Start 9 s; gelation 55 s; tack-free 60 s |
| Preparing component temperatures | Both components +10 to +30°C before delivery |
Liquid component density and foam density refer to different material states. Confinement of expansion, temperature and ground conditions change the result. Do not calculate the required resin quantity from free-rise foam density alone.
- Storage and shelf life
- +10 to +25°C; 6 months in tightly sealed, original containers, protected from moisture and sunlight.
Applications and selection criteria
First establish the repair objective, substrate condition, presence of water and joint movement.
Ground stabilisation
Verify that distribution covers the required soil zone. A material result does not automatically confirm ground parameters.
Levelling and lifting structures
The application described in the TDS requires planned stages, displacement monitoring and stop criteria. Do not derive the lifting increment from the declared expansion.
Sewer connections
The TDS provides for sewer joint sealing. Assess leakage, surrounding voids and water inflow; select the delivery location and expansion confinement. Check the foam's effect on the pipe in a trial, monitoring movement and joint watertightness.
Water barrier in soil — conditional selection
GeoPolymer.55 may be considered for a water barrier after individual selection for the soil and void zone. A trial must confirm filling continuity and watertightness. Control expansion, material migration and effects on the structure; assess water flow and the ability to retain material in the zone. The foam's own water resistance does not confirm barrier watertightness.
Application conditions and limitations
Selection requires assessment of soil, water, voids and loads. Resin specimen parameters are not the capacity of the strengthened soil. Confirm injection extent, quantity and effect through a trial and the adopted monitoring programme; a pressure increase alone does not confirm completion.
How the material behaves
A + B reaction; verify water effects and actual foam structure in a trial. Lifting only with movement monitoring; not a flexible expansion joint filling.
1. 2K delivery
Separate components A and B
2. Reaction
Foaming after combining
3. In the soil
Expansion confined by the surrounding structure
Preparation and application
Work sequence after assessing the structure and selecting the method. Full requirements are given in the product instructions.
Assess the zone and plan monitoring
Establish soil layers, voids, water and adjacent elements. Plan injection points, sequence and stop criteria. Monitor structural displacement during lifting.
Prepare the components and system
Before application, bring both components to +10 to +30°C. Connect separate circuits to the 2K pump, check the 1:1 volume ratio and operation of the mixing head.
Perform a trial and inject in stages
Start with a trial section. Record quantity, pressure, flow and the response of the structure. Select settings for the soil and objective; do not derive pressure from material strength.
Check the result and clean the equipment
Compare the result with the task criteria. Flush and maintain the system according to the product and equipment instructions; the A + B reaction starts when they are combined.
Clean the 2K resin system with PI-CLEANER before the material sets, then maintain with PI-SAVER according to the product instructions.
From selection to application
Choose the instructions for your task and calculate material quantities using clearly defined assumptions.
Product documentation
Data, application instructions and safety documents for the supplied material.
Preparing for safe work
Before use, read the current documentation for all supplied components. Select protective equipment, ventilation and cleaning methods appropriate to the material and equipment.
Discuss your project conditions
Prepare a description of the substrate, water, geometry and expected result. Let us select the material and delivery method.