PERMANENT STEEL FIBER REINFORCED CONCRETE FORMWORK Russian patent published in 2018 - IPC E04B2/86 E04G11/00 

FIELD: construction.

SUBSTANCE: invention relates to construction, in particular to permanent formwork, and can be used as a structural element for the main parts of buildings and structures, such as walls, columns, floors, roofs, foundations, etc. In this case, the invention can be used for the erection of cast concrete and reinforced concrete structures in industrial, civil, power engineering and other industries. Fixed steel fiber reinforced concrete formwork contains flat sheets, connected together by fastening elements, while flat sheets are made of a self-sealing steel fiber reinforced concrete mixture of high-strength cements of not less than 500 grade, highly disperse active mineral additive, hyperplasticizer and fibers of steel fiber. Height of laying of a self-sealing concrete mix in the formwork is up to 4,000 mm, the thickness of sheets of permanent formwork is min 10 mm, and fasteners are installed with pitch of up to 1,500 mm.

EFFECT: invention makes it possible to increase the strength, stiffness, reliability, durability of the permanent formwork, improve its adhesion to concrete, simplify the formwork structure, reduce its material-consumption, increase the adaptability of construction and installation works, and shorten construction time.

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