Friday, 9 March 2018

Light Weight Concrete And Their Advantages and Uses

Light Weight Concrete

                                     The conventional concrete is a heavy material having density about 2400 kg/ m3
and high thermal conductivity . Thus the dead weight of the structure made with ordinary concrete becomes large which ultimately makes the structure uneconomical. The concrete whose density varies from 300 to 1800 kg / m3 is known as light weight concrete .The light weight concrete is prepared by adopting any or more of the following measures:
1)By cellular construction .
2) By entraining large quantities of air 
3)By using no fines concrete 
4)By using light weight aggregates such as expanded clay, shale and slate , fly ash, blast furnace slag etc.

Advantages of Light Weight Concrete

                     The light weight concrete has the following advantages
a)Due to its low density , it helps in reduction of dead load, increases the progress of building and lowers the handling cost.

b)The light weight concrete has low thermal conductivity . So in extreme climatic condition , the use of this concrete is advantageous.

c)The adoption of light weight concrete gives an outlet for industrial wastes such as fly ash , slag etc, which otherwise create problem for disposal.

d)It has more resistance to fire.

e)Light weight product can be easily sawn , cut, drilled or nailed. This makes construction and repair work easier.

Uses of Light Weight Concrete

           Different uses of light weight concrete are as follows
a)It is highly used as insulator to exterior walls of all types of buildings.

b)It is used for construction of load bearing walls, filler wall and partition wall.

c)It is used for making pre-cast floor and roof panels and composite walls.

d)It is also used for construction of in situ composite roof and floor slabs.