benefits of concrete
Concrete has the following advantages:
- Concrete material is readily available.
- Concrete can be easily handled and molded into any desired shape.
- Concrete can be easily transported from the mixing site to the casting site before the initial set.
- Concrete can be pumped or sprayed to fill the cracks and lining of tunnels.
- It is possible to build any structure using steel as reinforcement; Be it lintels or huge fly-overs.
- The monolithic character of concrete gives it a better appearance and gives great rigidity to the structure.
- The property of having high compressive strength of concrete makes concrete structure more economical than steel structure.
disadvantages of concrete
Following are the disadvantages of concrete.
- Concrete has low tensile strength. Hence concrete needs to be strengthened to avoid cracks.
- In tall structures, expansion joints need to be provided if there is a large temperature difference in the area.
- Concrete can crack due to shrinkage, drying and expansion of moisture. Hence construction joints are provided to avoid such type of cracks.
- If a soluble salt is present in the concrete, it may swell when exposed to moisture.
- Concrete made of ordinary Portland cement tends to unify in the presence of alkali, sulphate, etc.
- Continuous loads develop creep in structures.