Efflorescence
What is Efflorescence?
In chemistry, efflorescence is the loss of water of crystallization from a hydrated or solvated salt to the atmosphere on exposure to air. Efflorescence occurs with all concrete and is the most frequent problem that concrete contractors face with colored concrete. Efflorescence is caused when soluble salts and other water dispersible materials come to the surface of concrete and mortars. Efflorescence is a white crystalline or powdery, often fluffy/fuzzy deposit on the surface of masonry materials like concrete, brick, clay tile, etc.
Efflorescence is a common problem in cover and masonry block bases. The white fuzzy stuff you see along the inside and outside of your basement wall is efflorescence. Efflorescence is the remainder that is left behind after water is removed. The remainder is mostly salt-based and harmless. Different types occur in the construction industry, including concrete, brick, and masonry. This is accomplished when the silicon reacts with the lime in the mix which results in calcium silicate.
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