Information and translations of Fly Ash in the most comprehensive dictionary definitions resource on the web. Fly ash is a waste product of the combustion of coal. Ash which does not rise is termed bottom ash. Describe 2020 In Just One Word? Fly ash is a byproduct from burning pulverized coal in electric power generating plants. Wet ash ponds can po… fine particles of ash carried out of the flue of a furnace with the waste gases produced during combustion. (Chemistry) fine solid particles of ash carried into the air during combustion, esp the combustion of pulverized fuel in power stations. fly  vb , flies, flying, flew, flown. See more. © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins More example sentences. Fly ash is also recognized as an environmentally friendly material because it is a byproduct and has low embodied energy, the measure of how much energy is consumed in producing and shipping a building material. fly ash - WordReference English dictionary, questions, discussion and forums. In addition to providing an indication of the mineralogy and reactivity of the fly ash, the calcium content is also useful in predicting how effective the fly ash will be in terms of reducing the heat of hydration (Thomas 1995), controlling expansion due to alkali-silica reaction (Shehata All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. The Most Surprisingly Serendipitous Words Of The Day, The Dictionary.com Word Of The Year For 2020 Is …. noun. Fly ash produced with other types or higher percentages of co-combustion materials than those provided for in Clause 4 is outside the scope of this European Standard. And, of course, it reduces the cement consumption and therefore makes the concrete more acceptable from a sustainability viewpoint. Fly ash requires less water than Portland cement and is easier to use in cold weather. Ash produced in small dark flecks by the burning of powdered coal or other materials and carried into the air. During combustion, mineral impurities in the coal (clay, feldspar, quartz, and shale) fuse in suspension and float out of the combustion chamber with the exhaust gases. Fly ash brick (FAB) is a building material, specifically masonry units, containing class C or class F fly ash and water. Class C Fly Ash provides unique self-hardening characteristics and reduces permeability. English Collins Dictionary - English Definition & Thesaurus. Fly ash is a by-product from the combustion of pulverized coal, and is widely used as an ingredient in hydraulic-cement concrete. Fly ash bricks synonyms, Fly ash bricks pronunciation, Fly ash bricks translation, English dictionary definition of Fly ash bricks. Fly ash has pozzolanic properties, meaning that it reacts with lime to form cementitious compounds. Fly ash can have a different chemical makeup depending on where the coal was mined. https://www.thefreedictionary.com/fly+ash. The EPA found that significant exposure to fly ash and other components of coal ashincreases a persons risk of developing cancer and other respiratory diseases. Fly Ash aids the formation of cementitious compounds to enhance the strength, impermeability and durability of concrete. Fly ash definition, fine particles of ash of a solid fuel carried out of the flue of a furnace with the waste gases produced during combustion. Fine particulate ash sent up by the combustion of a solid fuel, such as coal, and discharged as an airborne emission or recovered as a byproduct for various commercial uses. Fly ash is a pozzolanic material widely used as a mineral admixture. What Does “Auld Lang Syne” Actually Mean? Objectives . Meaning of Fly Ash. American Heritage® Dictionary of the English Language, Fifth Edition. The LOI content is a very important parameter since it is known that fly ash with high LOI values may affect the concrete properties. Ash produced in small dark flecks, typically from a furnace, and carried into the air. Dictionary.com Unabridged “Pagan” vs. “Wicca”: What Is The Difference? fly ash. ‘For rigid pavement construction in a large scale, part replacement of cement by dry fly ash is found acceptable.’. Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Take this quiz to test your knowledge! 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Table 1 shows that the loss of ignition (LOI) content of wood fly ash is significantly higher than coal fly ash. Why Do “Left” And “Right” Mean Liberal And Conservative? Definition of Fly Ash in the Definitions.net dictionary. Fly ash, in combination with other qualifying building materials, can contribute points in several categories when used in concrete and other building products. Fly ash is a recycled product that can be used as a substitute for some of the cement in concrete. Investigation of chemical and mineralogical composition of fly ash … Low calcium fly ash as a cementitious material has an inherent drawback - its relatively low reactivity. Fly ash in concrete contributes to a stronger, more durable, and more chemical resistant concrete mix. Fly ash is a heterogeneous by-product material produced in the combustion process of coal used in power stations. fine solid particles of ash carried into the air during combustion, esp the combustion of pulverized fuel in power stations. Class C Fly Ash. A compound word is a word that is composed of two or more words that are otherwise unaltered. This ash can contain lead, arsenic, mercury, cadmium, and uranium. English loves putting words together to make new ones. By contrast, Portland cement has a very high embodied energy because its production requires a great deal of heat. It is produced at coal-fired power plants and blast furnaces. Bottom Ash, a coarse, angular ash particle that is too large to be carried up into the smoke stacks so it forms in the bottom of the coal furnace. Compressed at 28 MPa (272 atm) and cured for 24 hours in a 66 °C steam bath, then toughened with an air entrainment agent, the bricks can last for more than 100 freeze-thaw cycles. In the case of a highly reactive ash it may replace 20 to 30% of the cement1. Definition of fly ash : fine solid particles of ashes, dust, and soot carried out from burning fuel (such as coal or oil) by the draft Examples of fly ash in a Sentence Recent Examples on the Web Iron flecks in … ‘For rigid pavement construction in a large scale, part replacement of … Fly ash can be a cost-effective substitute for Portland cement in many markets. Fly ash is the finely divided mineral residue resulting from the combustion of coal in electric generating plants. Fly ash imparts some beneficial properties to concrete, including reduced permeability, better finishability, and a reduction in the potential for alkali-silica reactivity. All Free. (The only way fly ash itself earns a point is in Innovation (IN) when using high-volume fly ash (HVFA) concrete mixes, which contribute to … It is a fine grey coloured powder having spherical glassy particles that rise with the flue gases. So how do you know if you spell them as one word or two? The carbonaceous material in fly ash is composed of angular particles. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Other benefits inc… In an industrial context, fly ash usually refers to ash produced during combustion of coal. Coal ash includes a number of by-products produced from burning coal, including: Fly Ash, a very fine, powdery material composed mostly of silica made from the burning of finely ground coal in a boiler. It is beyond the scope of this European Standard to specify provisions governing the practical application of fly ash in the production of concrete, i.e. We Asked, You Answered. Thus an external agent is Is produced at coal-fired power plants and blast furnaces Mifflin Harcourt Publishing Company carbonaceous in... 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