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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 ...
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 ...
Efflorescence: White, powdery residue found on basement walls near the floor. Mold : Fungi that usually grow in damp, dark areas and can cause respiratory problems after prolonged exposure. Foundation crack injections
Sulfate attack typically happens to ground floor slabs in contact with soils containing a source of sulfates. [2] Sulfates dissolved by ground moisture migrate into the concrete of the slab where they react with different mineral phases of the hardened cement paste. The attack arises from soils containing SO 2−
The White House said Friday it approved another $4.28 billion in student debt cancellation for 54,900 additional public service workers in what could be one of the Biden Administration's final act ...
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.
Digital banking opens up more competitive rates and fewer fees than your neighborhood brick-and-mortar bank, and robust apps make it easy to keep an eye on your balance, manage money among ...
This Thanksgiving is expected to be the busiest ever for air travel, with a record-setting 18 million Americans expected to jet off for their holiday celebrations in the coming days.
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