What is Cement ? Difference b/w Cement & Lime

In this post I am going to explain to you, What is Cement? Difference b/w Cement & Lime

What is Cement? Difference b/w Cement & Lime

Cement is an extremely line material having adhesive and cohesive properties which provide a binding medium for the discrete ingredients.

The cement is a product obtained by pulverizing (to make into a powder form) clinker formed by calcinating the raw material preliminary consisting of lime (CaO), Silicate (SiO₂), Alumina (Al₂O₃) and Iron oxide (Fe₂O₃).

When cement is mixed with water it forms a paste that binds aggregates (fine and coarse) together to form a hard durable mass called concrete.

The cement which is fine in nature is assumed to have good setting property, finer the grains of the cement more is the strength of cement.

The cement is having good heat of hydration due to which it sets early as compared to other binding materials like lime.

The cement experiences the exothermic chemical reaction when comes in contact with water.

The cement is assumed to have a specific gravity of 3.15

Joseph Asp din manufactured cement and called it Portland cement because when it hardened, it produced a material resembling stone from the quarries Portland in England.

During grinding of clinker, “Gypsum of Plaster of Paris” is added to prevent the flash setting of the cement. The amount of gypsum is about 3 to 5 percent by weight of clinker. It also improves the soundness of cement.

The common calcareous materials are limestone, chalk, marine shell and marl.

The argillaceous materials are the clay, shale, slate, and selected blast furnace slag.

The processes used for the manufacture of cement can be classified as dry and wet.

The ideal net weight of the cement bag is 50 kg and a volume of 0.035 m³.

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Difference Between Cement and Lime

Following points of differences may be noted between ordinary cement and lime :

1. The cement is used for the gain of early strength whereas lime gains the strength slowly.
2. The cement and lime colour is different.
3. The cement and lime both is binding material having good ultimate strength but lime experiences less early strength as compared to cement.

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