Rice Husk Ash as Supplementary Cementitious Material in Rigid Pavement - An attempt to Reduce Carbon Footprint

Owing to growing road network needed for increasing developmental activities massive burden is being posed to the environment in terms of direct products and by products. Cement is prime construction material for rigid pavement and its huge production to meet out the demand is of great concern for environmentalists. During the production of cement various harmful gases are emitted out of which CO2 is of prime concern. Several materials viz. fly ash, rice husk ash, GGBS, silica fume, metakaolin etc. can be used as partial replacement of cement in construction. The use of Supplementary cementitious materials in construction not only improves the mechanical property of cement matrix but also reduce the burden from environment. In this paper an attempt is made to explore the possibility of use of rice husk ash as partial replacement of cement in rigid pavement to lower down the carbon footprint.