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It is also possible to protect porous building materials such as brick, tiles, and concrete against efflorescence by treating the material with an impregnating, hydro-phobic sealer. This is a sealer that repels water and will penetrate deeply enough into the material to keep water and dissolved salts well away from the surface.
Whitewash is sometimes coloured with earths to achieve colours spanning the range of broken white, cream, yellow and a range of browns. The blue laundry dye (such as Reckitt's "Dolly Blue" in the UK, Ireland and Australia, Loulaki in Greece, or Mrs. Stewart's Bluing in North America), formerly widely used to give a bright tinge to boiled white ...
Wood ash from a campfire. Wood ash is the powdery residue remaining after the combustion of wood, such as burning wood in a fireplace, bonfire, or an industrial power plant.It is largely composed of calcium compounds, along with other non-combustible trace elements present in the wood, and has been used for many purposes throughout history.
Three people were briefly hospitalized after a "white powdery substance" exploded in a Colorado home on Tuesday. Arapahoe County deputies say a family found a small container on the front porch of ...
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WASHINGTON — A formal lab test of the white substance found at the White House on Sunday has come back positive for cocaine, according to an official with knowledge of the investigation.. The ...
Wet storage stain is a white, crumbly, and porous substance that is a mixture of three chemical compounds: 2ZnCO 3 ·3Zn(OH) 2, ZnO, and β-Zn(OH) 2. Underneath the white coating is usually a dark gray surface. The corrosion product is very voluminous; it is approximately 100 times greater in volume than the zinc consumed.
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