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Stamped concrete in various patterns, highlighted with acid stain. Decorative concrete is the use of concrete as not simply a utilitarian medium for construction but as an aesthetic enhancement to a structure, while still serving its function as an integral part of the building itself such as floors, walls, driveways, and patios.
Ferrous sulfate can be used to stain concrete and some limestones and sandstones a yellowish rust color. [28] Woodworkers use ferrous sulfate solutions to color maple wood a silvery hue. Green vitriol is also a useful reagent in the identification of mushrooms. [29]
Concrete is the most widely used material in existence and is behind only water as the planet's most-consumed resource. [ 2 ] Cements used in construction are usually inorganic , often lime - or calcium silicate -based, and are either hydraulic or less commonly non-hydraulic , depending on the ability of the cement to set in the presence of ...
Phenolphthalein's pH sensitivity is exploited in other applications: concrete has naturally high pH due to the calcium hydroxide formed when Portland cement reacts with water. As the concrete reacts with carbon dioxide in the atmosphere, pH decreases to 8.5–9. When a 1% phenolphthalein solution is applied to normal concrete, it turns bright pink.
The Kremlin said on Monday that it had so far had no contact with Donald Trump or his team after the U.S. president-elect called for an immediate ceasefire and negotiations between Ukraine and ...
Let it snow in North and East US. Through Saturday evening, snowfall of 2 to 5 inches is expected to fall across northeast New Jersey, New York City, the Lower Hudson Valley, and parts of western ...
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