USE OF FINE CALCIUM CARBONATE IN AN INORGANIC MORTAR SYSTEM BASED ON ALUMINOUS CEMENT TO INCREASE LOAD VALUES

摘要

Calcium carbonate which has an average particle size in the range of from 0.5 to 3 μm is used in an inorganic mortar system for a chemical fastening of anchors and post-installed reinforcing bars in mineral substrates. The system includes a curable aluminous cement component A and an initiator component B for initiating the curing process. The component A includes at least one blocking agent selected from phosphoric acid, metaphosphoric acid, phosphorous acid and phosphonic acids, at least one plasticizer, and water. The component B includes an initiator, at least one retarder, at least one mineral filler, and water. Moreover, the calcium carbonate increases load values. Further, a method is used for a chemical fastening of anchors and post-installed reinforcing bars in mineral substrates, such as structures made of brickwork, concrete, pervious concrete or natural stone.