METHOD TO CONCRETE STRUCTURES USING NON-DETACHABLE REINFORCED CONCRETE AND (OR) REINFORCED CEMENT FORMWORK Russian patent published in 2012 - IPC E04B2/84 

FIELD: construction.

SUBSTANCE: in the method for concreting structures with application of a non-detachable reinforced concrete and (or) reinforced cement formwork, including treatment of the active surface of the formwork with application of vertical chases and laying with vibration of a concrete mix into the formwork, prior to laying of the concrete mix into a non-detachable reinforced concrete and (or) reinforced cement formwork, the concrete mix is exposed to preliminary electric heating with alternating current to temperatures exceeding by 25-45° the formwork active surface temperature, besides, treatment of the formwork active surface is carried out with a water jet of high pressure 8-16 atm. in 4-8 hours after formwork moulding, at the same time application of additional inclined chases onto the active surface of the formwork is carried out at the angle of 45±15° relative to vertical chases, and vertical and inclined chases are applied by means of mechanical cutting.

EFFECT: higher strength characteristics of a joint between old and new concretes, increased durability of a structure and intensification of concrete works.

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