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Primary efflorescence is named such, as it typically occurs during the initial cure of a cementitious product. It often occurs on masonry construction, particularly brick, as well as some firestop mortars, when water moving through a wall or other structure, or water being driven out as a result of the heat of hydration as cement stone is being formed, brings salts to the surface that are not ...
Epsomite forms as encrustations or efflorescences on limestone cavern walls and mine timbers and walls, rarely as volcanic fumarole deposits, and as rare beds in evaporite layers such as those found in certain bodies of salt water. [5] [7] It occurs in association with melanterite, gypsum, halotrichite, pickeringite, alunogen, rozenite, and ...
Efflorescence is usually the result of mineral solutions in the capillary channels being drawn to the surface. If the water evaporates, the minerals remain as the so-called efflorescence. It also can be the result of chemical reaction; if badly prepared cement-based mortar is applied to maintain the stone in position, free calcium hydroxide may ...
Thénardite is an anhydrous sodium sulfate mineral, Na 2 SO 4 which occurs in arid evaporite environments, specifically lakes and playas.It also occurs in dry caves and old mine workings as an efflorescence and as a crusty sublimate deposit around fumaroles.
PGA of America votes to give U.S. captain, players $200,000 stipend, increase charitable donation, even though "no players asked to be compensated."
Aaron Rodgers and the New York Jets are officially out of the playoff hunt. The Jets were eliminated from postseason contention on Sunday afternoon after their 32-26 overtime loss to the Miami ...
An affected gastropod shell (a juvenile Agathistoma) from a museum collection. Byne's disease, more accurately known as Bynesian decay, is a peculiar and permanently damaging condition resulting from an ongoing chemical reaction which often attacks mollusk shells and other calcareous specimens that are in storage or on display for long periods of time.
Nicole Eggert made a surprising revelation about her days starring in the iconic TV series "Baywatch.". For over a decade, fans around the world tuned in to watch the show's team of red swimsuit ...