How to Use fly ash in a Sentence

fly ash

noun
  • The amount of fly ash increased eightfold in less than five years.
    — Emily Wright, Washington Post, 16 June 2023
  • Use less lime and replace it with fly ash, a by-product of burning coal.
    — IEEE Spectrum, 4 June 2018
  • Many fly ash or slag substitutes turn concrete a dark, muddy grey.
    — Mrigakshi Dixit, Interesting Engineering, 30 June 2026
  • Right now, about 2 billion tons of fly ash are trapped in storage ponds and dump sites across the nation.
    — Mrigakshi Dixit, Interesting Engineering, 11 June 2026
  • Rice husk ash is more elastic and may be feasible in higher percentages than fly ash.
    — Caroline Delbert, Popular Mechanics, 4 Nov. 2019
  • What is proposed is not just to use fly ash (the waste left after burning coal), but also something called gangue.
    — Christopher McFadden, Interesting Engineering, 24 May 2026
  • The dust from the mine and the coal fly ash from the thermal power plant blanketed everything.
    — Ishan Kukreti, Quartz, 5 Nov. 2021
  • That shows that DβS can help produce concrete that's stronger than the usual stuff made with fly ash.
    — Abhimanyu Ghoshal, New Atlas, 27 Nov. 2025
  • The use of fly ash as a feedstock eliminates the need to use limestone at all, let alone to superheat it.
    — Erik Kobayashi-Solomon, Forbes, 13 Nov. 2023
  • Most of the ash used in Pines’ residential properties is called fly ash.
    — Sarah Bowman, The Indianapolis Star, 30 May 2024
  • Removal of fly ash from silos will begin the week of July 24.
    — Linda Gandee, cleveland, 17 July 2023
  • Industrial wastes like fly ash and blast furnace slag have replaced cement in concrete at times.
    — Carolyn Barber, Fortune, 13 July 2023
  • This means, in reality, that one batch of fly ash could be full of something like gallium, say, while the next has next to none.
    — Christopher McFadden, Interesting Engineering, 24 May 2026
  • There was danger in the fly ash, or the powderlike particles produced when burning coal, dirtying the air.
    — Sarah Bowman, Indianapolis Star, 24 Sep. 2017
  • Scientists drilling ice cores out of Greenland have found lead from fly ash, a byproduct of coal combustion, dating back to the era.
    — Gavathri Vaidyanathan, Discover Magazine, 2 Oct. 2014
  • At power plants, different coal sources can get mixed, and the resulting fly ash can vary widely in composition.
    — Christopher McFadden, Interesting Engineering, 24 May 2026
  • Iron flecks in coal fly ash, for example, are amorphous globs that dissolve more easily than the crystals found in mineral dust.
    — Emily Underwood, Smithsonian Magazine, 3 Jan. 2020
  • The agency acknowledges that a key sample used in the original analysis contained fly ash.
    — Sarah Bowman, The Indianapolis Star, 30 May 2024
  • The fly ash, a byproduct of coal combustion, was mixed with soil to create mini-islands in the lake that allow water to permeate.
    — Emily Wang Fujiyama, ajc, 15 Nov. 2022
  • As such, fly ash has long been mixed with OPC to increase the durability of concrete produced with it.
    — Erik Kobayashi-Solomon, Forbes, 13 Nov. 2023
  • Tiny black bits of fly ash — a byproduct of burning coal and oil — drifted into the lake from rapidly industrializing cities.
    — Emily Wright, Washington Post, 16 June 2023
  • At concrete batch plants, respirable crystalline silica can come from cement and fly ash, a powder used in producing cement.
    — Elena Bruess, San Antonio Express-News, 17 Sep. 2021
  • There are several types of coal ash, including fly ash, which is fine and powdery, bottom ash which is heavy and coarse, and boiler slag, which is melted bottom ash.
    — Isabelle Chapman, CNN, 7 Dec. 2021
  • As for fly ash, once the carbon is burned away, the residual ash contains tiny mineral particles that are often captured in smokestacks.
    — Christopher McFadden, Interesting Engineering, 24 May 2026
  • The team essentially replaced fly ash – a waste product from coal combustion – in creating geopolymer paste which acts as a binder in concrete.
    — Abhimanyu Ghoshal, New Atlas, 27 Nov. 2025
  • By themselves and without special treatment, pozzolans like fly ash possess almost no value as a cement component.
    — Erik Kobayashi-Solomon, Forbes, 13 Nov. 2023
  • Others have replaced cement in concrete partly with construction and industrial waste, mining slag, and fly ash.
    — IEEE Spectrum, 8 May 2023
  • Adani Group said salinity ingress was a local phenomenon and that its power plant used technology to ensure that there was no stray fly ash.
    — Forbes Wealth Team, Forbes, 26 Jan. 2023
  • What’s more, China already has the industrial base to use waste materials like fly ash and gangue as a viable resource for metals.
    — Christopher McFadden, Interesting Engineering, 24 May 2026
  • The kitchen countertops are Squak Mountain Stone, a material made of cement, fly ash, glass dust and paper.
    — Julie Lasky, New York Times, 1 Nov. 2017

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'fly ash.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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