Industrial concrete slabs operating under constant traffic from heavy-duty vehicles experience sustained mechanical stress that gradually compromises the condition of the supporting ground. This wear, often triggered by repetitive dynamic loads and exacerbated by thermal variations and water infiltration through joints and cracks, can lead to progressive subsidence, void formation, and uneven settlement. The consequences are visible in the form of cracked surfaces, misaligned joints, and slab displacements, which pose operational inefficiencies and increase safety risks. Addressing these issues requires a solution that is precise, rapid, and non-disruptive.
The SOIL STABILIZATION method developed by GEOSEC responds to this challenge through a non-invasive ground improvement process based on expansive polyurethane resin injection. The procedure begins with a thorough diagnostic phase, typically including dynamic penetrometric tests and geophysical imaging such as Electrical Resistivity Tomography (ERT), to assess the extent and depth of degradation. Based on the findings, a targeted intervention strategy is devised.
The solution is implemented by drilling a grid of fine boreholes, generally 12 mm in diameter, directly through the slab into the weakened subsoil. A specially formulated synthetic resin, MAXIMA®, is injected under low pressure via steel lances. As the resin enters the ground, it reacts by expanding volumetrically, filling cavities, expelling moisture, compacting the surrounding soil, and binding loose materials. This chemical and mechanical action increases the density and cohesion of the affected ground, reinstating its load-bearing capacity and improving overall ground stability.
Execution is carefully monitored using precision laser-level systems, which allow engineers to control the process in real time. Any slight elevation of the slab can be detected instantly, providing feedback to adjust injection volumes and confirm ground consolidation. Depending on site size and extent of damage, the intervention can be completed within a few days. Throughout, the site remains operational, as the process generates no spoil, vibration, or noise, and requires no excavation or large machinery.
Upon completion, post-treatment testing—such as DPM 30 dynamic probing—is used to verify the improvement in mechanical performance. These tests frequently demonstrate an increase in bearing capacity of over 100%, confirming the structural effectiveness of the intervention. The improved subsoil ensures stable support for the slab, minimises future maintenance needs, and significantly extends the pavement’s service life.
In environments where operational downtime is not an option, this method proves especially valuable. Its combination of precision, speed, and cleanliness provides a compelling alternative to traditional remedial works. Whether in logistics, warehousing, manufacturing, or other high-load industrial settings, GEOSEC®’s expanding resin injection system delivers robust, lasting solutions for slab settlement and subgrade deterioration, safeguarding both infrastructure and operations.
