PURINSEAL - Polyurethane Injection Systems

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Water flows into the building through cracks that occur during or after construction. The water ingress can be prevented by applying negative side injection at points where positive waterproofing is not possible. Leaking concrete structures can be permanently repaired by crack injection techniques using polyurethane resin. Polyurethane resin reacts with water to form a watertight foam. Polyurethane resins vary in rigid and semi-rigid, flexible and semi-flexible foam forms. Chemical expansion of the foam is very effective in filling cracks in concrete as the resin reacts with water.

Polyurethane (PU) Injection is a special technique used to stop water seepage from cracks, filling cracks in walls, concrete joints and floors caused by water damage. PU injections are divided into two as one-component and two-component products;

To use one-component products, water must be present in the application area. One-component products have different foam structures; flexible and semi-flexible, rigid and semi-rigid. One-component products are used to immediately stop the water flow. Two-component non-foaming products are then used for permanent sealing. The reason for using two-component products is to provide a permanent sealing by acting as a stopper on the cracks.

Preferring foaming products in high volume of voids or cavities with or without water provides cost advantage. By extending the pot life, two-component products can also be applied with one-component injection machines. In addition, polyurethane resins are injected into loose or less dense soils, cavities, cavities and cracks to strengthen the soil substrate and provide waterproofing. PURIN polyurethane injection resin systems are designed to consolidate and stabilize a structure or soil.

Crack Injection

Crack Injection

Polyurethane injection resin systems cut the water flowing through the cracks and provide permanent sealing.

 

Soil Stabilization

Soil Stabilization

PURINSEAL soil stabilization series are used in the applications of strengthening, stabilizing the soil and ground, filling the gaps as a solution to the geological problems caused by groundwater or soil movements.

Mining and Tunneling

Mining and Tunneling

PU Injection is used to cut and seal uncontrolled water leaking from cracks in tunneling and mining operations. It is also used for ground stabilization and filling large voids.

Ground Stabilization

Ground Stabilization

PU systems are used in applications such as filling the voids under the concrete, stabilizing the concrete, lifting concrete slabs.

 

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Ayşenur DEDE

 adede@purin.com.tr

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Aslı GÜRDAL

 agurdal@purin.com.tr