Another defect arising during curing and fermentation is the efflorescence of salts on the surface, a phenomenon known as saltpetre ; light brushing and spraying with a weak solution of acetic acid are effective remedies.
The efflorescence of aboriginal pottery is to be found in the Pueblo region of south-westernUnited States, in Mexico, Central America,Caribbean Islands, Colombia, Ecuador, Peru and restricted areas of eastern Brazil.
Calcium nitrate, Ca(N0,)2.4H20, is a highly deliquescent salt, crystallizing in monoclinic prisms, and occurring in various natural waters, as an efflorescence in limestone caverns, and in the neighbourhood of decaying nitrogenous organic matter.
In the USA, Joane Nagel (1995) has pointed to similar trends amongst Native Americans, referring to an... Why has Indigenous efflorescence occurred more-or-less simultaneously, in parallel,..查看文章
A soft all-the-way win in weaker grade might have seen expensive colt Efflorescence turn the corner in his development ahead of his metropolitan debut at Caulfield on Saturday. The I Am Invi..查看文章
The water eventually evaporates as it dries and leaves a white powdery substance called efflorescence. Efflorescence can cause your brick to look dull, but you can prevent its formation by ...查看文章
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