WHAT IS HARDY SLAB | TYPES | APPLICATION | ADVANTAGES | DISADVANTAGES -lceted LCETED INSTITUTE FOR CIVIL ENGINEERS

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Feb 27, 2021

WHAT IS HARDY SLAB | TYPES | APPLICATION | ADVANTAGES | DISADVANTAGES

 WHAT IS HARDY SLAB?

This type of slab is built with hardy bricks which is made of hollow bricks and concrete. These bricks are used to fill thick slab areas, which saves the amount of concrete, thus reducing the slab's weight. These types of the slab are commonly found in Dubai and China. This slab is used in areas where the temperature is very high. The thickness of the slab is increased to withstand the temperature from above the slab. The heat coming from the walls is counteracted by using special bricks that contain thermocol.

Dimensions of Hardy brick is 400mm x 200mm x 200mm


HARDY SLAB



TYPES OF HARD SLAB

One way - Hardy Slab

Two way - Hardy slab

 

APPLICATION OF HARDY SLAB

We can use this type of slab where the temperature is very high. its thickness is increased to resist temperature. The heat coming from the walls is counteracted by the use of special bricks with thermacol.

ADVANTAGES OF HARDY SLAB

·       Improved insulation for sound and heat.

·   The amount of concrete reduced below the neutral axis to reduce the slab weight

·    Simplicity of construction, especially when all beams are concealed beams.

·       Advanced insulation for heat and sound.

 

DISADVANTAGES OF HARDY SLAB

1. If not handled properly, brick units can be damaged during transport.

2. It's not suitable for small spans.

3. Repair and strengthen is difficult


The installation method for Hardy Slab is different from normal, and is clearly explained below:

THE EXECUTION PROCESS FOR

HARDY BLOCKS IS AS FOLLOWS

Step 1: The formwork is fixed first and then the shutters are fixed on it

Step 2: Hardy blocks are placed on the shutter with a brick gap across the entire shutter.

Step 3: Gaps in between the bricks is known as ribs. In that gap reinforcement is provided in the form of a beam

Step 4: After placing the ribs, a hollow steel mesh is placed over the entire area of slab resting on the ribs after placing rib

Step 5: At last slab is prepared for pouring concrete.

 

 

 

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