Hardy Slab
Hardy slab is a type of concrete slab constructed by hardy bricks.Hardy bricks are hollow bricks and it is made up of concrete hollow blocks.These blocks are used to fill portions of the slab.Hardy slabs reduce the amount of concrete in the slab and also its own weight of the slab is also reduced.This types of slab has a more thickness 2.27 m when compared with conventional one.The method of installing hardy slab is different from normal slab.The application of hardy slab are generally seen in Dubai and China.
Types Of Hardy Slab
- One-way Hardy Slab
- Two-way Hardy Slab
The Process Of Hardy Blocks Execution is as follows:
1. Formwork is arranged and then shutters are fixed on the formwork.
2. Hardy blocks are placed on the shutter with one brick gap on the entire shutter.
3. The gaps between the bricks are a rib. Reinforcement is provided in a form of the beam within the gap.
4. After placing the rib, the plain steel mesh is placed on the entire slab area resting on ribs.
5. Now pouring of concrete is done on a slab.
Advantages Of Hardy Slab
- Economical for span of length upto 5 m.
- Reduced the quantity of concrete below neutral axis.
- Reduced the weight of the slab compared to conventional slab.
- Hardy slab construction is good where temperature is very high.
Disadvantages Of Hardy Slab
- Costly
- Difficult to repair.
- Difficult to strengthen.
- Required proper handling during transportation, otherwise it get damaged.
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