Advantages of Concrete
The following are the advantages of concrete
- Concrete ingredients are easily available.
- Concrete can be easily handles and moulded to any desired shape.
- Concrete can be easily transported from the place of mixing to place of casting before initial set takes place.
- Concrete can be pumped or sprayed to fill into cracks and lining of tunnels.
- Using steel as reinforcement it is possible to build any structure; be it lintel or a massive fly-over.
- The monolithic character of concrete gives it better appearance and much rigidity to the structure.
- The property of concrete to possess high compressive strength makes a concrete structure more economical than steel structure.
Disadvantages of Concrete
The following are the disadvantages of concrete.
- Concrete possess low tensile strength. Therefore concrete is required to be reinforced to avoid cracks.
- In long structures, expansion joints are required to be provided if there is large temperature variance in the area.
- Due to drying shrinkage and moisture expansion concrete may crack. Therefore construction joints are provided to avoid these types of cracks.
- If soluble salt is present in concrete then it may lead to efflorescence when comes in contact with moisture.
- Concrete made with ordinary Portland cement, gets integrated in the presence of alkalies, sulphates etc.
- Sustained loads develop creep in structures.