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Limestone and building materials:
Limestone is a compound of Calcium Carbonate CaCO3
Calcium Carbonate can be Thermally Decomposed
in a lime kiln.
Word EQn : Calcium Carbonate Calcium Oxide + Carbon Dioxide
Symbol EQn : CaCO3 CaO + CO2
Quicklime (Calcium Oxide) can be used to make cement or "cure" soil acidity.
When water is added to quicklime it produces Slaked Lime (Calcium Hydroxide)
CaO + H2O Ca(OH)2
Building materials from Limestone:
Cement = powdered limestone heated with powdered clay it sets when mixed with
water and hardens quickly.
Concrete = cement + water + sand + crushed rock can be reinforced with steel
rods and is good at resisting which squeeze or crush it.
Glass = powdered limestone heated with sand and sodium carbonate.
Mortar = slaked lime + water + sand used to hold buildings together. reacts with the
CO2 in the air to produce calcium carbonate.
Need of building materials
More money for the local economy
Destroy natural habitats
Pollution due to sand + dust