PRECAST-CAST-IN-PLACE PRESTRESSED FLOOR AND METHOD FOR ITS CONSTRUCTION Russian patent published in 1994 - IPC

FIELD: construction. SUBSTANCE: floor has prefabricated members which serve as stationary forms and monolithic part of prestressed concrete made on prefabricated members. Surface of prefabricated members contacting monolithic part is rough with projections and depressions sizing 0.5-2.5 cm and height of monolithic part is determined by relation given in invention description. During manufacture, made on prefabricated members are projections and depressions sizing 0.5-2.5 cm. After mounting of prefabricated members, arranged on formed flooring is monolithic part of prestressed concrete with monolithic layer height h_m from the above given expression. During period of attaining initial compression strength of 1. 5-7.5 MPa, prestressed concrete of monolithic part is kept moistened, e. g. , with aid of moisture-retaining mats. EFFECT: reduced specific consumption of materials and improved performance of floor. 2 cl, 4 dwg