EXPERIMENTAL STUDY ON RED MUD BASED GEOPOLYMER BRICKS
Keywords:
Geopolymerization, Compressive Strength, Red Mud, PrecuringAbstract
The metallurgical processing of Bauxite results in production of very large quantity of red mud. Studies were
carried out on 230*100*70 mm size geopolymer bricks .Red mud, fly ash and micro silica are used as binder
material .Alkaline solution of sodium hydroxide and sodium silicate were used in the geopolymerization
process. Red Mud was used upto 50 % as replacement for clay. Micro Silica was used for strength enhancement
.The bricks had a compressive strength of 9.456 MPa for 50% use of red mud. Water absorption was about
2.5% and showed very good resistance against sulphate environment. The advantages are: good compressive
strength, elimination of curing, 100% replacement of clay by fly ash and red mud.


