Soil Stabilization

Soil Consolidation, Subsoil Stabilization, Soil Injection: methods of foundation soil stabilization and solidification

Extreme weather conditions – great wetness/floods and long dry periods – disturb the natural equilibrium moisture and the structure of many water-permeable soils. This leads to undermining, cavities/voids, gaping cracks, crevices and settlements. Foundation soil, slopes and earth walls lose their stability, buildings sag and crack.

Depending on the type of damage, the stability and load-bearing capacity of the substrate must be restored.
This includes:

• Filling/stabilizing cavities/voids/voids
• Increasing soil cohesion
• Dam and slope stabilization
• Displacement and sealing against in-situ water (under pressure/in flow)
• Post-construction foundation laying
• Lining/injection of fl oor slabs

In practice, soil injections are used, often in conjunction with injected ram injection lances and soil nailing. Our injection systems with a wide range of material properties allow a partial elastic deformability of the injected substrate as well as the rebuilding of a solid, stable base.

Solutions
• Reactive resins if rapid stabilization is required
• Silicate resins of different viscosity and strength 
– adapted to the grading curve of the soil; cavities/voids
• PU resins with different foaming behavior – adapted to the „hydrodynamic conditions“
• Acrylate gels and silicate systems for penetration stabilization
• Hybrid systems for backfilling and stabilizing cavities/voids and for pile installation
• Gluing/bonding of mechanical safety systems (piles, anchorages, pegs)

Our products for soil solidification

Soil solidification, ground stabilization or soil injection is a method used for improving the stability of soil. For this purpose, special binders are injected into the substrate. These special binders make the foundation soil permanently resistant to mechanical stress. Another objective of soil solidification is to make the soil as resistant to water and frost as possible. 

Soil stabilisation measures prevent the occurrence of subsidence and resulting deformations in building structures. Barely susceptible vibrations are frequently the cause of subsidence. However, subsidence is also caused by water withdrawal and related soil erosion. This can cause the formation of voids or sinkholes in soft soil layers. In this case soil stabilization and ground solidification measures are mandatory. Unconsolidated soil can be stabilized and solidified by means of foundation soil injection. The special products used for foundation soil injection measures are based on silicate and polyurethane resin and are characterized by their high strength and fast curing process.

Silicate Injection Solutions
Low viscosity silicate injection solutions from WEBAC are especially designed for solidifying and stabilising soil. They are not only suitable for ground stabilization and soil injection but also for the stabilization of masonry. 

Consolidation Line
Consolidation Line products from WEBAC are special, fast reacting injection resin systems. They are suitable for sealing and solidifying soil formations and, for example, used for the solidification of unconsolidated soil. 
 

Technology for soil solidification 

Injection Pumps and Accessories
WEBAC 1C and 2C injection pumps come with different delivery rates so that the ideal injection technology is available for each application.

Injection Packers
Injection packers are filler necks which provide for the connection between structural elements and injection devices during the injection process. One distinguishes between surface packers and drill-hole packers.