Bricks from Red Soils

Product/Process

Process for making quality bricks from red soils.

Application/Use

Building bricks from kaolinitic red soils of Karnataka and other peninsular region wherein large tracts of iron rich red clay deposits exist.

Salient Features of Process/Technology

The traditional clamp burning method yields pourous bricks with poor strength of 25-35 kg/cm2. Incorporation of 10-15% well graded, processed carbonaceous material and firing at temp. 900-100oC enables manufacture of bricks with a compressive strength: 70-110 kg/cm2, water absorption: 14-22% and bulk density: 1.67-1.86 g/cc.

Status of Commercialisation

Ready for commercialisation.

Minimum Economic Unit Size

30,000 bricks/day.

Indicative investment

Rs. 35 lakh

Equipment and Machinery

Double shaft mixer.

 

Raw materials

Moderately plastic graded red clay, potable water, fine graded carbonaceous materials (flyash, screened cinder, pulverised rice husk/rice husk ash) in optimum quantities, coal as fuel.

 

For further information please contact

The Director.
Central Building Research Institute, New Delhi