AREXAL® - Puridal

PURIDAL is a low-viscosity liquid based on soluble alkali silicate compounds with very good capillary penetration ability.

Effects and strength increases by treatment with PURIDAL Testing Institute for Building Materials Dr. Günther Böttcher 1225 A 1225 B

PURIDAL is used for solidifying and stabilizing mineral building materials and mortars such as concrete, masonry bricks, plaster, and natural stone. It encapsulates and passivates building-damaging salts, e.g., sulfates, nitrates, chlorides, etc.

The applied PURIDAL converts the free lime in the building material into calcium silicate, thereby increasing the strength of the building material.
It prevents the transport of building-damaging salts to the surface of the building material, by encapsulating and passivating the salts. PURIDAL inhibits excessive water absorption capacity in plaster substrates and does not affect the water vapor diffusion capability of the building material.

AREXAL-PURIDAL:

• does not attack structural steel
• is non-flammable
• does not decompose
• increases fire and heat resistance
• acts to strengthen wood and repel termites
• impregnated surfaces are lead-free

For solidifying surfaces and encapsulating building-damaging salts, PURIDAL is applied to dry, or possibly slightly moist, building materials using spraying or flooding methods. Depending on the required penetration depth, multiple applications may be necessary, working wet in wet. For solidifying foundations, masonry, concrete, etc., PURIDAL is introduced via drill holes using soaking or injection methods. (see the Injection information sheet)
Please note:
For subsequent systems (e.g., bonding bridge, adhesive slurry) to adhere properly on surfaces treated with PURIDAL, they must be applied wet in wet without waiting. Excess PURIDAL can form a white haze on the surface. Protect glass and anodized parts. Clean tools and injection machines with water.

Due to its alkalinity, PURIDAL is corrosive. The protective measures ordered by the chemical professional association must be strictly followed. Work with gloves and safety glasses. Avoid skin contact with the product. To better protect the hands, apply a protective skin cream. Immediately rinse material splashes on the skin or in the eye with plenty of water and then seek medical attention immediately.

For further questions, feel free to call us!