What is concrete? Properties and Uses

What is Concrete?

Concrete is the mixture of cement, sand, aggregates and water. Cement concrete is the major building material in the construction industry. It can be easily moulded into durable structural members.
                                                                                        In concrete sand is used as fine aggregates, gravels and crushed stones are used as coarse aggregates. The cement acts as a binding material which forms a paste with water and on hardening, this cement paste holds coarse and fine aggregates together to form a solid mass.


Properties of Concrete

The cement concrete possesses the following properties:

1. The thermal expansion of concrete is approximately 0.4 mm per meter.

2. Concrete shrinks as it dries and expands again on wetting and extent of movement depends upon the modulus of elasticity of the cement.

3. It binds rapidly with steel and as it is weak in tension, the steel reinforcement is placed in concrete at suitable places.

4. It has a tendency to be porous.

5. It has a high degree of abrasion resistance.

6. It has a high degree of electrical resistance.

7. It is more economical than steel.

8. It has high compressive strength.

9. It is free from corrosion so as it has no effects of atmospheric agents on it.

10. It hardens with time and process of hardening is continue to a long time and after a long time, it attains the sufficient strength.

11. It should be remembered that apart from other materials, the concrete comes to the site in the forms of raw materials only. Its final strength and quality depend entirely on local conditions and the person handling it. However, the materials of which concrete is composed may be subjected to rigid specifications.

Uses of Concrete 

1. Concrete is extensively used in the construction of various structures such as building, bridges, dams, and all Civil Engineering structure.
2. Concrete is used for the construction of various architectural compositions such as vaults, dams, shells, bridges etc.
3. Concrete is also used in prestressed construction.

Also, Read

1. What Is Workability of Concrete
2. Compressive Strength of Cement Concrete
3.Concrete Mix Ratio For Various Grade Of Concrete - Concrete 
Mix Design

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