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EXPLANATION OF The URETEK Method

The URETEK Method is used to stabilise, raise and relevel, moving and sunken concrete resting on the ground. Applications include floors, buildings and roads, in residential, commercial, industrial and civil environments.

Stabilising and lifting does not take place by hydraulic pressure.

Typically, URETEK's highly trained technicians inject plural component resins through small diameter holes, pattern drilled through a concrete slab. As the components mix together, they react and the material immediately expands. After filling any voids encountered, a controlled mould pressure is exerted onto the underside of the slab and into the ground, thereby re-establishing structural support and encapsulating or compacting loose subbase material. (This is an essential first step in repair and reinstatement.)

By choosing to continue the injection process, and with any void filling and compaction already achieved, the almost irresistible upward pressure of the expanding resins begins to gently lift the slab. Lifting allows the expanding resins to also spread laterally and further expand, thereby establishing uniform support over a defined area.

The ground will only accept such material as is able to expand to fill any voids and compact inadequate strata, before lifting occurs - insuring minimal material usage.

The rate and extent of lift is a controlled and precise operation. Movement is carefully monitored by laser or computer level. It is possible to either lift the slab or to restrict the operation to resupport and consolidation of the subbase only.

With a lifting pressure of up to 400 kPa (40 tons per square metre), it is possible to lift floors with shelving or heavy machinery in place - or even entire buildings.

The lower the density of the cured resin, the less the amount of material required and so the lower the cost of the works. A practical and economic benefit, therefore, is the ability for the URETEK material to spontaneously adjust its strength by increasing its density - but only as the weight of the structure adds resistance and requires a greater load carrying capacity.

Due to the wide spacing and minimal diameter of injection holes, The URETEK Method causes minimal, if any, damage to floor finishes, whilst a good concrete slab, of adequate thickness, can be lifted without cracking.

Different URETEK resins are available for different situations.

Problem floors corrected by The URETEK Method have improved load bearing capacity, long term stability, plus better thermal insulation and impermeability.

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