What is concrete?
In its simplest form,concrete is a composite material, which is made from a mixture of cement, aggregate (sand or gravel), water and sometimes admixtures in required proportions. It is one of the most important and useful materials for construction work, its tensile strength is very small as compared with its compressive strength. This disadvantage can be offset by reinforcing or pre-stressing concrete with steel reinforcement. Reinforced concrete (RC) possesses many of the best properties and is used in variety of construction including building frames, floors, slabs, walls; bridges; pavements; piles; dams; water retaining structures etc
ADVANTAGES OF CONCRETE:
1. Concrete is economical than other building materials.
2. The compressive strength of concrete is very high.
3. Concrete is very strong in compression.
4. Concrete can be cast easily into any desired shape.
5. It possesses a minimum corrosive and weathering effects.
6. Concrete made with steel reinforcement provides equal coefficients of thermal expansion.
7. Concrete can be pumped and sprayed in difficult positions.
8. It is fire resistant.
9. Concrete is durable, and have a little maintenance cost which can be ignored.
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Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including works like roads, bridges, canals, dams, and buildings..........