Physical properties of URETEK relative to increased density
Within certain limits the URETEK polymer demonstrates elastic characteristics. Hooke’s Law indicates that compression is proportional to the applied forces and will not exceed more than 10% in deviation.
Only when force exceeds the elastic limit is the internal cellular structure permanently modified and will not recover its initial form. The elastic limit depends on the density of the material.
The two diagrams at the right indicate the effect of density on its resistance to forces of compression and flexing.
Compressive Strength
The URETEK polymer is primarily used to consolidate ground and to re-level settled structures. It is clear that, from a practical point of view, the most important property is compressive strength. The Compressive Strength diagram at the right relates the density of the material to its compressive strength. The usual surface density of the URETEK material, which is about 70kg/m3 when injected beneath flooring, can reach 300 kg/m3 in deep injection levels.
