A pioneering geopolymer road in Bihar was recently inaugurated by NTPC Kahalgaon. The first of its kind in the state constructed entirely without cement, the 2.9-km road marks a milestone for the company. It utilised 2,000 metric tonne (mt) of fly ash, a byproduct of power plants, and ground granulated blast furnace slag (GGBS) from steel plants, combined with chemicals such as sodium hydroxide and sodium silicate. This eco-friendly approach not only reduces greenhouse gas emissions but also promotes the effective utilisation of industrial waste and sustainable practices. More durable than conventional concrete roads, the road is expected to set a new standard for future infrastructure projects in the region. Geopolymer concrete can also be used for railway sleepers, electric power poles, cement mortar, marine structures and waste containments.
