Limestone is formed in and culled from warm, calm marine waters.
Limestone is a versatile rock with a wide range of uses. Culled from calm, warm marine waters, limestone is formed when animals that form calcium carbonate die and their shell remains accumulate as sediment, which becomes limestone. It is most often used in some form of construction. It may be cut, crushed or ground, depending on the intended use. Does this Spark an idea?
Cut limestone
In architecture, the limestone is cut into slabs or blocks to be used as stair treads, window sills, floor tiles or facing stone. It enjoyed great popularity as a building material in the late 19th to early 20th century. It is both heavy and expensive.
Crushed limestone
When heated and crushed in a metal refining process, the limestone attaches to impurities and is then removed as slag. Crushed limestone may also be used as a top coat on roofs or a weather resistant coating for asphalt shingles. It is also used on farms to treat acidic soil. Crushed limestone may be fed to chickens, which use the calcium carbonate found within to make strong egg shells.
Ground limestone
Limestone powder is sometimes sprayed onto coal surfaces in underground mines to reduce coal dust and cleanse the air. Ground limestone is sometimes a component in cement.
Tags: Crushed limestone, also used, calcium carbonate, Ground limestone, marine waters
