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NTPC develops geo-polymer aggregate from fly ash

New Delhi [India], November 14 (ANI): India's largest power producer and a public sector undertaking (PSU) under the Ministry of Power, NTPC Limited has successfully developed geo-polymer coarse aggregate from fly ash, the Ministry of Power said on Friday.

ANI Nov 14, 2020 00:38 IST googleads

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New Delhi [India], November 14 (ANI): India's largest power producer and a public sector undertaking (PSU) under the Ministry of Power, NTPC Limited has successfully developed geo-polymer coarse aggregate from fly ash, the Ministry of Power said on Friday.
"The development will help in replacing natural aggregates reducing the impact on the environment," the Ministry said in an official release.
As per the Ministry, NTPC's research project on the production of geo-polymer coarse aggregate from fly ash has met the statutory parameters of Indian Standards and was confirmed by National Council for Cement and Building Materials (NCCBM).
"NTPC has successfully developed geo-polymer coarse aggregates as a replacement to natural aggregates. The technical parameters as per Indian standards for its suitability to use in concrete works were tested by NCCBM, Hyderabad and the results are in an acceptable range. The development is NTPC's R&D achievement in expanding the horizon in ash utilisation," it stated.
The Ministry said India's demand for these aggregate touches close to the 2,000 million metric tons mark every year, and the aggregate developed by NTPC from fly ash will help in meeting the demand to a great extent and also will reduce the impact on the environment caused by Natural aggregates which require quarrying of natural stone.
"In India, every year, approximately 258 MMT of ash is produced by the coal-fired thermal power plants. Out of this around 78 per cent of the ash is utilised and the balance remains unutilised which remain in ash dykes. NTPC is exploring alternate ways to utilise the remaining ash which includes the current research project to generate aggregates using more than 90 per cent ash," it added.
The geo-polymer aggregates find extensive usage in the construction industry turning the ash eco-friendly. These aggregates are extremely environment friendly and do not require any cement for application in concrete where the fly ash-based geopolymer mortar acts as the binding agent. The geo-polymer aggregates will help in reducing carbon emission and has great potential for the reduction of water consumption. (ANI)

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