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NTPC invites EoI to build fly ash-based roads at its plants

Press Trust of India  |  New Delhi 

NTPC has invited expression of interest (EoI) for of fly ash-based roads at its plants to demonstrate use of this technology, a said.

"NTPC has invited players to construct fly ash-based roads. About 1,100 tonne of is used per km of road," the told

Earlier, the company has successfully completed similar project at as per Indian Roads (IRC) specifications & accreditation. Moreover, 1.2-km double lane stretch are being constructed at and Farakka stations. These projects are being developed by NETRA, the R&D wing of NTPC.

NETRA has also developed geopolymer spun / hume pipes, tetra pods, tiles and is working on other applications as well.

Geopolymer concrete, an eco-friendly material, is a 100 per cent replacement of and has a great potential as a binder as it sets to a material and gains strength more rapidly than

Geopolymer concrete has emerged as an important engineering material in recent times because of its utility in developing ecologically sound and sustainable materials.

Concrete demand is expected to grow to 18 billion tonne per year globally by 2050. is not only intensive but also responsible for large scale emission of CO2, the added.

During 2017-18, 32.23 million tonne of ash, which is 53.45 per cent of the ash generated, was utilised for various productive purposes by the company.

Other important areas of ash utilisation are cement & asbestos industry, plants (RMC), road embankment, brick making, mine filling, ash dyke raising & land development.

The new initiatives for use of fly ash, like geopolymer road, of ash from pithead power stations to consumption centres, setting up ash-based light weight aggregate plant etc, are being explored by NTPC, the official said.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Sun, November 18 2018. 12:56 IST