additives for special gypsum and mu00f6rtelsorten, compositions containing same and use it in special gypsum and mu00f6rtelsorten

摘要

A water retaining additive for conglomerate building materials, free of cellulose-like derivatives, that comprises at least a rheological grade clay, preferably sepiolite, and a modified natural gum such as guar gum, as well as conglomerate compositions that contain the additive, as well as the use of the additive for different constructions materials comprised of gypsum and special mortars are described.