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Secondary efflorescence on the dam of the Robert Moses Niagara Power Plant. In chemistry, efflorescence (which roughly means "the flowering" in French) is the migration of a salt to the surface of a porous material, where it forms a coating. The essential process involves the dissolving of an internally held salt in water or occasionally, in ...
Interstitial condensation is a type of condensation that may occur within an enclosed wall, roof or floor cavity structure, which can create dampening. When moisture-laden air at dew point temperature penetrates inside a cavity of the structure, it condenses into liquid water on that surface. The moisture laden air can penetrate into hidden ...
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.
Example of secondary efflorescence in parking garage exposed to diluted road salt from vehicles entering the garage during winter. When water flows through cracks present in concrete, water may dissolve various minerals present in the hardened cement paste or in the aggregates , if the solution is unsaturated with respect to them.
According to Planet Minecraft statistics, Greenfield is the third-most downloaded Minecraft map of all time. [ 6 ] Greenfield is designed to resemble the West Coast of the United States, heavily inspired by Los Angeles , [ 2 ] and is built to a one-to-one scale, with each block's size being one cubic meter. [ 7 ]
An example of a readable book [b]. Each of the nine countries covered by the library, as well as Reporters without Borders, has an individual wing, containing a number of articles, [1] available in English and the original language the article was written in. [2] The texts within the library are contained in in-game book items, which can be opened and placed on stands to be read by multiple ...
Stonemasonry is the craft of shaping and arranging stones, often together with mortar and even the ancient lime mortar, to wall or cover formed structures. The basic tools, methods and skills of the banker mason have existed as a trade for thousands of years.
Degrading concrete has been the focus of many studies and the most obvious sign is calcium-rich leachate seeping from a concrete structure. [5] [6] [7]Calthemite stalactites can form on concrete structures and "artificial caves" lined with concrete (e.g. mines and tunnels) significantly faster than those in limestone, marble or dolomite caves.