DRY MIXTURES

UDK 666.9.017

[:ru]Лекомт Ж.-П.[:en]Lecomte, J.-P.[:] [:ru]Dow Corning, Бельгия[:en]Dow Corning, Belgium[:]

[:ru]Салвати С.[:en]Salvati, S.[:] [:ru]Dow Silicones Belgium, Сенеф, Бельгия[:en]Dow Silicones Belgium, Seneffe, Belgium[:]

[:ru]Вандервельд С.[:en]Vandervelde, S.[:] [:ru]Dow Silicones Belgium, Сенеф, Бельгия[:en]Dow Silicones Belgium, Seneffe, Belgium[:]

[:ru]Брекволдт Дж.[:en]Breckwoldt, J.[:] [:ru]Dow Prod. u.Vertriebs GmbH&OHG, Бомлиц, Германия[:en]Dow Prod. u.Vertriebs GmbH&OHG, Bomlitz, Germany[:]

[:ru]Мюллер A.[:en]Mueller, A.[:] [:ru]Dow Prod. u.Vertriebs GmbH&OHG, Бомлиц, Германия[:en]Dow Prod. u.Vertriebs GmbH&OHG, Bomlitz, Germany[:]

Alitinform №3 (56) 2019 г. 50-65 p.

Abstract

This study focusses on the combined utilization of cellulose ethers with silicone hydrophobic powders used as integral water repellent, in cement-based mortars. It is observed that this combined use leads to some decrease of the hydrophobic surface properties of modified mortars. Migration of silane/silicone resin from the bulk of the mortar to the surface is suggested to be a key step to enable surface hydrophobic properties. Role of the different migration mechanisms of silane/silicone resin is discussed. A model trying to explain the hydrophobic performance of the bulk and the top surface of modified mortars is proposed.