Bihar’s First Geopolymer Road

23 Oct 2024 CW Team

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.

Technology at work

“The R&D wing of NTPC has developed prototype technology for geopolymer concrete roads, which utilise fly ash, GGBS, caustic soda, sodium silicate and other admixtures and are 100 per cent cement-free,” says Rajiv Satyakam, GM (Ash Tech and NI), NTPC Sipat. “The road has two layers of geopolymer concrete lean concrete (LC) of M10 strength and pavement quality concrete (PQC) of M40 strength. Around 1,100 mt of fly ash is used per km of road built for a width of 8.5 m...

To read the full story Click Here

Infrastructure Transport

07 Apr 2026

Tunnelling Begins for Thane, Borivali twin tunnel project

Tunnelling work has commenced for the 11.84-km Thane–Borivali Twin Tunnel, set to be India’s longest urban road tunnel, marking a key milestone in Mumbai’s infrastructure development.As per a post shared by Mumbai Metropolitan Region Development Authority on social media platform X, the tunnel boring machine (TBM) ‘Nayak’—the country’s largest single-shield hard rock TBM for an urban tunnel—was launched by Devendra Fadnavis on Tuesday. The event was attended by Eknath Shinde and Sunetra Pawar, among other dignitaries. A second TBM, ‘Arjuna’, is expected to be launched so..

Large Format Store Planned At M G Road Metro Station

M G Road station in Bengaluru is set to host the city’s first large-format commercial and experience space, with planning led by Bangalore Metro Rail Corporation Limited. BMRCL has invited proposals to develop and operate a central business district destination at the Purple?Pink Line interchange. The plan positions the station as a commercial hub designed to serve a broad commuter base across the city. The proposal is part of a broader effort to activate transit nodes commercially. Tender documents set a minimum monthly rental of Rs 0.944 million (mn), inclusive of GST, for the large-format..

Government Cancels Auction Of Eleven Critical Mineral Blocks

The government has cancelled the auction of 11 critical and strategic mineral blocks after receiving a poor investor response and failing to attract a sufficient number of qualified bidders. The decision represents a setback to plans to ramp up domestic exploration and production of critical minerals amid global supply chain disruptions and rising demand for materials used in clean energy and advanced technologies. The mines ministry issued an annulment notice setting out the reasons for the cancellations. The annulment notice indicated that the auction process for five mineral blocks was canc..