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Permanent Waterproofing for Concrete Tanks & Reservoirs

Arab Construction World – January/ February, 2004

Concrete water works infrastructure such as water & wastewater treatment plants, potable water reservoirs and precast sewage and septic tanks are vulnerable to water damage as a result of high hydrostatic pressure, cracking and structural defects. If these challenges are not overcome, the structure will eventually deteriorate due to corrosion of reinforcing steel, leaching and freeze-thaw cycles.

A typical protective coating used in concrete tanks and structures is Coal Tar Epoxy. However, many are recognizing the limitations of such methods and the finite protection that they offer.

More and more industry professionals are turning to Integral Crystalline Waterproofing to permanently repair and/or prevent water damage to the water supply system.

Integral Crystalline Waterproofing becomes a part of the concrete matrix when surface applied to existing structures or added to the mix at the time of batching. When combined with water, the chemical compound reacts with the un-hydrated cement particles to form millions of needle-like crystals. These crystals fill the naturally occurring pores and microscopic voids of the concrete. Paths for harmful moisture and aggressive chemicals are blocked permanently.

Integral Crystalline Waterproofing has a number of advantages over coal tar epoxy and other conventional concrete waterproofing systems.

Ease of Application
Integral Crystalline Waterproofing can be surface applied as a slurry coating to repair and protect existing structures. Such an application is simple, effective and permanent. In addition, Integral Crystalline Waterproofing requires moisture during application so there is no delay associated with wet surfaces.

Permanent – Lasts for Life 
Conventional membrane systems eventually deteriorate or become damaged and need costly repairs or replacement. Integral Crystalline Waterproofing becomes a part of the concrete and lasts for the life of the structure. It will reactivate to seal hairline cracks and it is unaffected by surface wear and abrasion.