INSULATING CONCRETE Russian patent published in 2006 - IPC C04B38/10 

FIELD: manufacture of building materials for civilian and industrial construction engineering.

SUBSTANCE: proposed concrete includes cement, lime, filler-sand, water, complex foaming additive containing the following components, mass-%: sodium abietate, 30.34-33.67; potassium alkaline, 6.88-7.64; hide adhesive, 10.67-11.83; water, 34.11-37.86 and fatty acid salts, 9.0-18.0; it additionally contains filler-ash after burning sewage water sediment at the following ratio of components, mass-%: cement, 28.7-33.5; lime, 4.6-7.6; sand 8.8-9.1; ash,26.5-27.1; additive, 0.32-0.33; the remainder being water. Concrete possesses ability of absorbing ions of heavy metals.

EFFECT: improved protective properties of concrete; enhanced ecological safety.

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