Partial Replacement of Cement using Red Mud in SCC

Abstract

Partial Replacement of Cement using Red Mud in SCC Red mud derived from alumina refineries through the Bayer process is a waste material with a density of 2187 kg/m3 . The particle size distribution of the red mud is similar to cement. The potential use of the red mud to replace cement in self-compacting concrete (SCC) is assessed by conducting a range of fresh and hardened properties tests .

Development of self-compacting concrete (SCC) is a desirable achievement in the construction industry in order to overcome problems associated with cast-in-place concrete. various investigations have been carried out and SCC has been used in practical structures , mainly by large construction companies.

Conclusion

From this experimental study following points can be drawn: After testing of 5 blended cement samples (5% to 25 % replacement of Cement by NRM) with an increment of 5 %, it can be said that the optimum use of NRM is 15% as a partial replacement of cement by NRM. The cost of M 30 grade NRM Concrete (i.e. 15 % Replacement) is around 7.48 % less than the Conventional Concrete, with an increase upto 21.712 % in the 28 days Compressive strength. The percentage economy is increased with the increase in the grade of concrete but at the same time there is a reduction in the percentage increase in the Compressive Strength Considering all the above point it is interesting to say that the optimum utilization of Neutralized Red Mud in concrete is 15 % as a partial replacement of cement by NRM.