METHOD TO ERECT STACK Russian patent published in 2015 - IPC E04H12/28 

FIELD: construction.

SUBSTANCE: in this method to erect a stack, including installation of a reinforcement frame, assembly of external and internal form panels of a bearing reinforced concrete shaft, placement of a separating element from water-permeable material in the gap between external and internal form panels and concreting of the shaft by laying heavy concrete into the space between the external form panels of the pipe shaft and the separating element, and in the space between the separating element and the internal form panels - heat insulating concrete, in accordance with the invention during concreting of the shaft heavy concrete is laid into the space between external form panels of the pipe shaft and the separating element, and in the space between the separating element and internal form panels the heat insulating concrete is laid simultaneously, at the same time heavy and heat insulating concrete before laying is heated. Heat insulating concrete is fed for laying at temperature that is by 10-20°C higher than heavy concrete heated up to 45-55°C. In the best versions of implementation of the proposed method the separating element is a metal mesh, the size of cells of which gradually reduces in vertical direction from the base of the pipe; heavy and heat insulating concrete is fed for laying in steps along the height of the pipe with a pitch of 280-320 mm per hour and delay of at least one hour between steps.

EFFECT: simplification of the process of laying concrete into a gap between lining and a bearing shaft of a stack, reduction of its labour intensiveness and as a result higher efficiency of the process of stack erection; stabilisation of concrete strength in pipe shaft volume, as a result of which quality of solidification and strength as a whole in the produced structure of the pipe increases.

3 cl, 2 dwg