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Lime and cement are two commonly used materials in construction, but they have different properties and applications. It is important to know the difference between them to ensure that you use the right material for your project. In this article, we will discuss the characteristics of lime and cement, and how to distinguish between them.

Section 1: What is Lime?
Lime is a white, powdery substance that is made from limestone. It is a natural material that has been used in construction for thousands of years. Lime has a high level of plasticity, which means that it can be molded into different shapes. It is also highly permeable, which allows it to absorb moisture and release it slowly over time. Lime is commonly used in mortar, plaster, and stucco.

Section 2: What is Cement?
Cement is a gray, powdery substance that is made from a mixture of limestone, clay, and other materials. It is a synthetic material that was invented in the 19th century. Cement is known for its strength and durability, which makes it ideal for use in concrete, masonry, and other structural applications.

Section 3: How to Distinguish Between Lime and Cement
There are several ways to distinguish between lime and cement:

1. Appearance: Lime is white, while cement is gray.

2. Texture: Lime has a fine, powdery texture, while cement has a coarser texture.

3. Hardness: Lime is relatively soft and can be scratched with a fingernail, while cement is much harder.

4. Reaction to Water: Lime reacts with water to produce a chemical reaction that causes it to harden. Cement, on the other hand, sets and hardens through a process called hydration.

5. Application: Lime is commonly used in mortar, plaster, and stucco, while cement is used in concrete, masonry, and other structural applications.

Conclusion:
In conclusion, knowing the difference between lime and cement is essential for anyone involved in construction. By understanding their properties and applications, you can choose the right material for your project and ensure its success. Remember to consider factors such as appearance, texture, hardness, reaction to water, and application when distinguishing between lime and cement.

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