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Question:

What is the difference between lime and cement? What are the main ingredients? What is the use?

What is the difference between lime and cement? What are the main ingredients? What is the use?

Answer:

Quicklime is obtained by calcination of limestone. The main component of limestone is calcium carbonate. When calcium carbonate is heated to 1100 degrees Celsius, calcium carbonate is broken down into calcium oxide and carbon dioxide. When carbon dioxide is discharged, it can be made into quicklime. The equation for this chemical reaction is as follows:CaCO3 + CaO + CO2Preparation method of lime, human history early in the era before already know. This can be found by archaeologists at the ruins of the ancestors of the sea.purposeIn addition, due to the fact that the raw material of lime is very common and the production cost is low, the lime powder is often used in the drying agent, and is placed in the packaging of food (mainly snacks).
Cement, red mud, commonly known as concrete cement, for general civil engineering materials cement on the cement, in accordance with the different nature can be divided into water cement and water cement, was born in 1824, is one of the most important building materials in the world.There are many kinds of cement, according to the mineral composition is divided into Portland cement (also known as Portland cement, Portland Cement), aluminate cement, sulphoaluminate cement, cement, fluoroaluminates aluminoferrite cement and low clinker or non clinker cement etc.. And according to its use and performance is divided into general cement, special cement and special cement three categories.In each kind of cement, and according to the strength of the cement, and divided into several strength grade. The performance of different cement varieties and strength grades are also different.Lime is commonly known as quicklime, the main component is calcium oxide (CaO). A mixture of quicklime and water to produce a chemical reaction, it will produce a mature lime, scientific name is calcium hydroxide (Ca (OH) 2). Hydrated lime reacts with carbon dioxide to produce calcium carbonate (CaCO3).
The main component of Portland cement, quicklime is the main component of calcium hydroxide, lime is the main component of calcium carbonate

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