Saltpetering and whitening resistant outer wall decorating mortar

Abstract

The invention discloses saltpetering and whitening resistant outer wall decorating mortar. The saltpetering and whitening resistant outer wall decorating mortar comprises the following components in parts by weight: 100 parts of Portland cement, 300-370 parts of sand, 4-10 parts of silica fume and 15-30 parts of acrylic emulsion. When the saltpetering and whitening resistant outer wall decorating mortar is used, the Portland cement, the sand and the silica fume are uniformly premixed in proportions to form dry mortar powder, 70-100 parts of mixing water is uniformly mixed with an acrylic emulsion to form a diluted emulsion, the dry mortar powder is added to the diluted emulsion, and the mixture is uniformly stirred to form the saltpetering and whitening resistant outer wall decorating mortar for application. The saltpetering and whitening resistant outer wall decorating mortar has the advantages that the saltpetering and the whitening can be inhibited at high efficiency, the effect of inhibiting the saltpetering and the whitening is prominent in humid and low-temperature environments, and the sensitivity of the construction quality of the building decorating mortar to the temperature and the humidity is greatly reduced.

Description

technical field [0001] The invention relates to a kind of mortar, in particular to a kind of mortar for exterior wall decoration without efflorescence phenomenon during use. Background technique [0002] Inorganic decorative mortar is a new type of environmentally friendly decorative material, which is composed of inorganic cementitious materials (cement), inorganic fillers, sand and additives. However, the traditional cement-based decorative mortar has strict requirements on the construction environment, because in high humidity environment (rain and fog weather RH>80%) and low temperature weather (temperature below 15 o C), the surface of the mortar is very prone to efflorescence and whitening, which affects the appearance and decorative effect of the mortar surface. In order to prevent the whitening of efflorescence, the construction of exterior wall mortar finishes must be carried out under continuous dry weather conditions. The construction season and climatic cond...

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Problems solved by technology

[0004] There are many researches on the problem of efflorescence and whitening on the surface of inorganic decorative mortar, but there are still the following problems: it is very sensitive to the temperature and humidity of the construction environment, and there will still be efflorescence and whitening in low temperature or humid environments. It is difficult to ensure the construction quality and decorative effect of the mortar; the operation time is short or unstable, and the construction is inconvenient

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