Method and device for testing the tensile strength in pulling elements of a pulling element line

摘要

The invention relates to dispersingly acting compositions as flow agents in the form of flowing screeds and putties for building material mixtures containing calcium sulfates, wherein said compositions comprise a copolymer in the form of a polycarboxylate ether and wherein the copolymer is free of dicarbolic acids as comonomer components. Dispersing agents can be used in an amount ranging from 0.002 to 1.0% by weight and thus provide the end products with a significantly improved early strength, wherein layer thicknesses of up to 10 cm can be achieved in the flooring area.