USE OF CALCIUM SULPHATE-CONTAINING TWO-COMPONENT MORTAR SYSTEM BASED ON ALUMINA CEMENT WHEN USING ANCHOR FASTENING TO INCREASE LOAD AND REDUCE SHRINKAGE Russian patent published in 2020 - IPC C04B40/06 C04B28/06 

FIELD: construction.

SUBSTANCE: group of inventions relates to use of a two-component mortar system containing calcium sulphate, for chemical fastening of fasteners in mineral surfaces to increase load values and/or to reduce shrinkage. In addition to calcium sulphate, this system of mortar contains curable component A of alumina cement and component of initiator B to initiate curing process. Component A further contains at least one blocking agent selected from a group consisting of phosphoric acid, metaphosphoric acid, phosphorous acid and phosphonic acids, at least one plasticiser, water and calcium sulphate. Component B comprises an initiator, at least one setting retarder, at least one mineral filler and water. This mortar system is used for chemical fastening of fasteners, preferably, metal elements, in mineral surfaces, such as structures made of brickwork, concrete, permeable concrete or natural stone.

EFFECT: technical result is increased load values and reduced shrinkage of mortar system.

14 cl, 5 tbl