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A 3,250 square meter (35,000 square foot) parking deck raft slab required waterproofing and corrosion resistance. The raft slab was on grade but the property is situated below sea level. Engineers were concerned about wicking water and subsequent corrosion of reinforcing steel. As well there were virtually no joints or construction breaks to alleviate stress and cracking.
The slab was poured on December 30, 1997, in cold winter conditions. Drying shrinkage cracking was substantially reduced and to date Krystol Internal Membrane (KIM) provides the waterproofing and corrosion control that is required for long-term durability.
Krystol Internal Membrane (KIM) is a hydrophilic crystalline admixture used to create permanently waterproof concrete.
