The largest volumes of concrete in a typical project usually are either below or at ground level and therefore can be placed by methods different from those employed on the superstructure. Concrete work below ground can vary enormously – from filling large diameter bored piles or massive mat foundations to the intricate work involved in basement and sub-basement walls.

Concrete must be moved from the mixer to the point of placement as rapidly as possible without segmentation or loss of ingredients. The transporting and handling equipment must have the capacity to move sufficient  concrete so that cold joints are eliminated .

However, it is important to waterproof the foundation to protect the reinforcements and concrete against attack by sulphates such as calcium sulphate, sodium sulphate and magnesium sulphate. Calcium hydroxide and chloride ion can also attack the concrete and reinforcements.

Krystol Internal Membrane (KIM) permanent waterproofing admixture is suitable for this type of project. Once KIM is used, damp proofing of the foundation is no longer required.

If the structure is already in place, you can protect it by waterproofing it with Radcon Formula # 7 or Krystol T1/T2 Systems. Should there be any joints occuring, the Krystol Joint System would do the trick.