Fiber-Containing Pasty Construction Materials

A fiber-containing paste-like building composition containing a) one or more fillers, b) optionally further additives, characterized in that c) fibers, d) one or more polymers based on one or more ethylenically unsaturated monomers and having a glass transition temperature Tg of ≧−15° C., e) ≦5% by weight of hydraulically setting binders and water are present, where the % by weight is based on the dry weight of the fiber-containing paste-like building composition, and

• the polymers d) are selected from the group consisting of copolymers of one or more vinyl esters with from 1 to 50% by weight of ethylene;
• copolymers of vinyl acetate with from 1 to 50% by weight of ethylene and from 1 to 50% by weight of one or more further comonomers selected from the group consisting of vinyl esters having from 1 to 12 carbon atoms in the carboxylic acid radical;
• copolymers comprising from 30 to 75% by weight of vinyl acetate, from 1 to 30% by weight of vinyl laurate or vinyl esters of an α-branched carboxylic acid having from 9 to 11 carbon atoms and also from 1 to 30% by weight of (meth)acrylic esters of unbranched or branched alcohols having from 1 to 15 carbon atoms, which additionally contain from 1 to 40% by weight of ethylene;
• and copolymers comprising one or more vinyl esters, from 1 to 50% by weight of ethylene and from 1 to 60% by weight of vinyl chloride;
• wherein the figures in % by weight for the respective copolymer add up to 100% by weight.