METHOD AND DEVICE FOR SHRINKING DEFORMATION PREVENTION IN CAST-IN-PLACE FLOOR STRUCTURES Russian patent published in 2004 - IPC

FIELD: building industry, particularly construction of buildings with cast-in-place floor structures and coverings. SUBSTANCE: method of shrinking deformation prevention involves reverse bending floor structure by frame creation in the form of sealed mobile chamber with rigid base; filling chamber with liquid which provides shell-like working surface having calculated rise; curing working surface at constant pressure until concrete hardening; reducing shell-like working surface rise by step-by-step water removing for shrinking deformation reduction and contraction cracks closing along with water removing steps carried out as more than 25% of concrete hardens, then as more than 40% of concrete hardens and then as more than 60% of concrete hardens; taking down form as 80% of concrete hardens. EFFECT: elimination of tension stresses appeared in concrete as a result of shrinking deformation. 4 cl, 3 dwg