Limestone & Building Materials C1.2 Limestone & Building Materials 2.0 / 5 based on 1 rating ? ChemistryThe limestone cycleGCSE Created by: James HansfordCreated on: 12-12-11 17:18 Limestone CaCo3 Limestone is a sedimentary rock consisting mainly of calcium carbonate. It is Cheap. It is Easy to obtain It has many uses. 1 of 4 Limestone as a Building Material Limestone can be quarried Limestone can be cut into blocks Limestone can be used to build houses. It can be eroded by acid rain however this is a very slow process. 2 of 4 Heating Limestone Calcium Carbonate (Caco3) is heated in a kiln. When Calcium Carbonate is heated in a kiln it Decomposes (Thermal Decomposition) Thermal Decomposition causes Calcium Carbonate to Break Down into Calcium Oxide and Carbon Dioxide. Magnesium, Copper, Zinc, Calcium and Sodium carbonates all decompose in a simlar way. Some Carbonates may not decompose at the temperature of a Bunsen Burner (E.g Group 1) Calcium Oxide can be reacted with water to produce calcium hydroxide. Calcium Hydroxide can be used to neutralise soils and lakes, preventing crop failure. 3 of 4 Making Cement, Mortar and Concrete Powdered Limestone is roasted in a rotary kilm with powdered clay to produce dry cement. When sand and water are mixed in, mortar is produced. Mortar can be used to hold bricks and stones together. When aggregate, sand and water are mixed in, concrete is then produced 4 of 4
Advantages and Disadvantages of using limestone & building materials made from limstone 4.5 / 5 based on 2 ratings
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