• Lasyamayee Garanayak

The excess demand for cement in construction era is relevant compatible to maxima utilization of industrial solid waste as an alternation of binding material. Since disposal of red mud turns to major environmental issue for its alkalinity nature, so this research was to evaluate the viability of red mud as a cementitious material. This type of material was developed by addition of granulated slag and red mud with three different proportion i.e. 30/70, 50/50, and 70/30. Those solid compositions were activated with the low concentration of alkali solution prepared by sodium hydroxide pellet and sodium silicate powder varying as mole proportion of SiO2-Na2O from 0 to 1.5 mole. Best compressive strength values were obtained by ARSC50 containing 50% slag and 50% red mud but activated by SN1.5 with the value 90.1MPa after 60 days of curing age in ambient condition. Hydration characteristics of ARSC50 were observed by XRD, SEM. Ettringite and amorphous C-S-H gel are the prime factors of strength development of ARSC. This paper provides a major solution of utilization of red mud and preservation of energy and natural sources.

Red mud, sodium hydroxide, sodium silicate powder.

"The behaviour of SiO2 content in strength development of alkali- activated red mud slag paste under ambient condition", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.154-169, June 2019, Available :http://www.jetir.org/papers/JETIR1907B85.pdf

"The behaviour of SiO2 content in strength development of alkali- activated red mud slag paste under ambient condition", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp154-169, June 2019, Available at : http://www.jetir.org/papers/JETIR1907B85.pdf