Influence of Efflorescence in Masonry on The Destruction of the Polymer Coating
This article discusses the causes of salt appearance on the brick building facades and their influence the destruction of the ceramic bricks polymer coating in the operation of buildings.One of the reasons for the formation of efflorescence is brick’s humidity that occurs when unobstructed exposure of atmospheric moisture on masonry because of violations of constructiontechnology of curtain walls. The absence of air gaps in the masonry, between brickwork and insulation, leads to additional moistening of walls at their operation. Discoveredthat mechanism of efflorescence is initiated by the mortar components. Infrared spectral analysis showed that the reason of efflorescence is sodium sulfate and calcium carbonate,which is formed from sodium oxide and calcium hydroxide. Thus, in accordance with the technical specifications for mortars sodium oxide content, for example, is limited to 0.6%.