DRY MIXTURES

[:ru]Д-р Роберт Бауманн[:en]Dr. Robert Baumann[:] [:ru]Dow Construction Chemicals, Бомлитц, Германия[:en]Dow Construction Chemicals, Bomlitz, Germany[:]

[:ru]Соня Шарлеманн[:en]Sonja Scharlemann[:] [:ru]Dow Construction Chemicals, Бомлитц, Германия[:en]Dow Construction Chemicals, Bomlitz, Germany[:]

[:ru]д-р Йорг Ноебауер[:en]Dr. Jörg Neubauer[:] [:ru]Dow Construction Chemicals, Бомлитц, Германия[:en]Dow Construction Chemicals, Bomlitz, Germany[:]

Alitinform №4-5 (16) 2010 г. 80-88 p.

Abstract

Cellulose ethers are an indispensible component of a cement render formulation. This highly functional additive helps to adjust the performance profile of the render at various levels. The main role of the cellulose ether is to provide sufficient water retention to the render so that the cement can set and develop strength before it dries out. The dissolved cellulose ether in the mortar matrix determines to a large extend its rheological properties and subsequently the workability of the render. Depending on the substitution level cellulose ethers have a delaying impact on the cement setting rate. This article discusses the effect of the structural parameters of the cellulose ether on all performance aspects of cement renders.

Key words:

Cellulose ethers, cement render, water retention