C1.2 - Rocks and Building Materials

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  • C1. 2 - Rocks and Building Materials
    • 2.1
      • Limestone is made mainly of calcium carbonate.
      • Limestone is used as a building material and to make calcium oxide and cement.
      • Cement mixed with sand, aggregate and water makes concrete.
      • Calcium carbonate decomposes when heated to make calcium oxide and carbon dioxide.
        • CaCO3 = CaO + CO2
    • 2.2
      • Metal carbonates decompose when heated to produce the metal oxide and carbon dioxide.
      • Carbonates react with acids to produce a salt, water and carbon dioxide.
      • Carbon dioxide turns lime water cloudy.
    • 2.3
      • Calcium hydroxide is an alkali that can be used to neutralise acids.
      • Thermal decompositi-on of calcium carbonate produces calcium oxide and carbon dioxide.
      • Calcium oxide reacts with water to produce calcium hydroxide.
      • Calcium hydroxide reacts with carbon dioxide to produce calcium carbonate.
    • 2.5
      • Limestone can have negative impacts on the environment and people living near the quarries.
      • Limestone, cement and concrete are needed as building materials.
      • Large plots of land and lots of energy is needed.
      • Dust and noise pollution.
    • 2.4
      • Cement is made by heating limestone with clay in a kiln.
      • Mortar is made by mixing cement and sand with water.
      • Concrete is made by mixing aggregate with cement, sand and water.

Comments

Rernana

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Looks like a great explanation of what different building materials are for and what qualities distinguish them. For novice builders, I recommend sticking to building bricks. They have been a staple for ages due to their longevity and cheap price. Take a look at https://www.mgnbm.co.uk/building-products/bricks-blocks/ in case you're searching for a reliable bricks supplier. You'll find a big assortment of different sized and colored bricks there with great technical characteristics. Pricing will impress you, as this company is known for their loyal pricing strategy that attracts customers.
kelvin124

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From foundations and driveways to patios and sidewalks, concrete contractors are crucial in residential construction, providing durable and aesthetically appealing elements. For more information see it here.

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