efflorescence


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efflorescence:

see hydratehydrate
, chemical compound that contains water. A common hydrate is the familiar blue vitriol, a crystalline form of cupric sulfate. Chemically, it is cupric sulfate pentahydrate, CuSO4·5H2O.
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Efflorescence

A deposit, usually white, formed on the surface of a brick, block, or concrete wall; it consists of salts leached from the surface of the wall.

efflorescence

[‚ef·lə′res·əns]
(botany)
The period or process of flowering.
(chemistry)
The property of hydrated crystals to lose water of hydration and crumble when exposed to air.
(materials)
A crust of salts, usually white, that forms on the surface of stone, brick, plaster, or mortar because of leaching of free alkalies from adjacent concrete or mortar.
(mineralogy)
A whitish powder, consisting of one or several minerals produced as an encrustation on the surface of a rock in an arid region. Also known as bloom.

efflorescence

An encrustation of soluble salts, commonly white, deposited on the surface of stone, brick, plaster, or mortar; usually caused by free alkalies leached from mortar or adjacent concrete as moisture moves through it.

efflorescence

1. Chem Geology
a. the process of efflorescing
b. the powdery substance formed as a result of this process, esp on the surface of rocks
2. any skin rash or eruption
References in periodicals archive ?
In addition to these properties, a unique need for masonry coatings not shared by wood substrates is efflorescence resistance.
of Milan) sample the ample contemporary accounts of the court at Baghdad during al-Mutadir's long reign, and try to account for the conflicting discourses of political decline and cultural efflorescence.
A The white substance is efflorescence -- salts left on the surface after water, which dissolved them from the masonry, has evaporated.
IN THE 1910S AND '20S, Georgia was a nexus of cultural exchange, where diverse strains of modernism intermingled and produced singular forms--an efflorescence checked by the enforced hegemony of socialist realism.
Lin said that TGI's low-Fe patterned solar glass can be used to cover solar module with low iron, high transmittance, consistent gauge, easy tempering, low self-cracking, efflorescence resistance, impact resistance.
Topics include an evaluation of efflorescence test methods for brick, stucco as a barrier to water penetration during hurricanes, the flexural tensile strength of clay masonry, a comparison of freeze and thaw test procedures on molded brick, and the thermal resistance of brick masonry systems.
It is alkali resistant, provides anti carbonation, retains colour for a much longer time then normal coating, has anti-moisture properties, and resistant to UV radiation and the effects of efflorescence.
Then it goes through a period of artistic efflorescence.
The brick is checked for white patches after the second evaporation to determine the efflorescence.
After a brief introduction, the first chapter is dedicated to the investigation of the patristic antecedents of the misogynistic attitude responsible for the efflorescence of the poetic cliche of female unattractiveness in the so-called comic-realistic poetry of Rustico Filippi and Guido Guinizzelli in the thirteenth century.
It is efflorescence free which eliminates the problem of discolouration.