fly ash properties ppt

Fly ash or flue ash, also known as pulverised fuel ash in the United Kingdom, is a coal combustion product that is composed of the particulates (fine particles of burned fuel) that are driven out of coal-fired boilers together with the flue gases.Ash that falls to the bottom of the boiler's combustion chamber (commonly called a firebox) is called bottom ash. 200 sieve). Class C. Pozzolanic with some hydraulic behavior. Download Full PDF Package. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. ≥ 70%. | PowerPoint PPT presentation | free to view The physical properties of fly ash are, 1. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. This fly ash is pozzolanic in nature, and contains less than 20% lime (CaO). 2ND YEAR But when we test this option, this function just does not work on Windows 7 and Vista. The mechanical properties of fly-ash-based geopolymer concrete (GPC) were studied. A QUALITATIVE APPROACH Now customize the name of a clipboard to store your clips. Some class C fly ash may have Ca O content in excess of 10%. The chemical and physical properties of fly ash particles are a function of the mineral matter in the coal, the combustion conditions, and post-combustion cooling. Using a high- grade Class C fly ash produced from burning Powder River B asin Coal, with the ash containing as much as 25% CaO and less than 0.5% LOI (loss -on- ignition) , they were able to make very strong non- fired fly ash bricks, having compressive strength in the neighborhood of 5,000 psi . Chapter 7. 2.Target 28-Day Compressive Strength of Concrete. HIGH VOLUME ); mirjam.wol ers@geo.unibe.ch (M.W. Also, the water permeable void contents and absorptions were lower for the HVFA mixtures at all ages, indicating that the durability of the HVFA is much better than that of the TDOT mixtures. WORKABILITY The inclusion of high volume of fly ash increases the workability as the content of … 3) The specific gravity of fly ash varies over a wide range of 1.9 to 2.55. 2. Class F. Pozzolanic. During the combustion process, the heat causes the inorganic mineral to become fluid or volatile or to react with oxygen. It is grey in colour and alkaline in nature. 1.Fly ash are amorphous (glassy) due to rapid cooling; those of cement are crystalline, formed by slower cooling. The properties studied water absorption, hardness, efflorescence, soundness, shape and size, crushing strength and basic compressive strength of the prism using different mortar mixes normally 1: 3, 1: 4 … Clipping is a handy way to collect important slides you want to go back to later. Class C Type Fly ash normally produced by burning lignite or sub- bituminous coal. Certain environmental toxics are also present in fly ash such as arsenic, barium, beryllium baron, chromium, lead, manganese and other heavy metals. See our Privacy Policy and User Agreement for details. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Fineness of Fly Ash. The particles of flyash are spherical in shape with size ranging from 0.5 pm to 100 pm. Properties of Fly ash. Fly ash makes up 80% of this residue; it is light and extremely fine and is collected by electrostatic or mechanical precipitation. Strength in terms of days+comparitive analysis btwn class f & class c, 1. pozzolanic properties of the fly ash and the lower w/cm ratios. Generally, it contains more than 20 lime (CaO). One of the most common uses of fly ash is in Portland cement concrete pavement or PCC pavement. A short summary of this paper. Portland cement is rich in lime (CaO) while fly ash is low. Present generation of fly ash from coal based thermal power plants in India is 131 MT/year and it is expected to increase to 300-400 MT/year by 2016-17. Now customize the name of a clipboard to store your clips. Normally it is rather finer than Portland cement. - Road and air field pavement construction Fly ash in road construction Embankment Lime fly ash concrete Cement fly ash concrete Lime fly ash … If you continue browsing the site, you agree to the use of cookies on this website. PROPERTIES OF basic knowledge about performance and characteristics of fly ash based concrete. Clipping is a handy way to collect important slides you want to go back to later. High volume fly ash concrete is a concrete where a replacement of about 35% or more of cement is made with the usage of fly ash. Significantly reduces the release of CO2 … It may take a little while to insert the flash. Explore Effect of Cement Replacement by Silica Fume and Fly Ash with Free Download of Seminar Report and PPT in PDF and DOC Format. Fly ashes are divided into two classes in accordance with ASTM C618, Class F and Class C. Class F fly ash has pozzolanic properties and is normally produced from burning anthracite or bituminous coal. It is generated in vast quantities as a by-product of burning coal at electric power plants (Senol et al., 2006). FLY ASH CONCRETE MIX DESIGN Presentation Transcript. Relevant Reading. You can change your ad preferences anytime. Water absorption is 6-12%, reducing dampness of the walls. If you continue browsing the site, you agree to the use of cookies on this website. Fly ash can be used as prime material in many cement-based products, such as poured concrete, concrete block, and brick. Share; Like; Download ... Vibhanshu Singh. See our Privacy Policy and User Agreement for details. They are used as replacement for normal clay bricks and has better properties than it. Improved Concrete Properties Using Quarry Dust as Replacement for Natural Sand, Utilization of sugarcane bagasse ash in concrete, Final year Btech civil engineering student at viswajyothi college of engineering & technology, AI and Machine Learning Demystified by Carol Smith at Midwest UX 2017, No public clipboards found for this slide. Fly ash, being primarily pozzolanic, can actually replace a percentage of the Portland cement, to produce an even stronger, more durable and more environment friendly concrete. anyway its a good way to start knowing gist and basics. Another type of fly ash- Class C is produced from burning sub-bituminous coal. The fly ash is taken from Sejingkat Thermal Plant, Kuching. geotechnical properties of fly ash to assess its suitability for soft soil stabilization. As per ASTM, the fineness of the fly ash is to be checked in both dry n wet sieving. ); urs.eggenberger@geo.unibe.ch (U.E.) Automatic Book Picking Robot For Libraries, #TeamClinton vs. #TeamTrump #Election2016, The Social Customer: 7 Key Lessons Learned (Graham Brown), No public clipboards found for this slide. Fly Ash. As per ASTM, the fineness of the fly ash is to be checked in both dry and wet sieving. Also Explore the Seminar Topics Paper on Effect of Cement Replacement by Silica Fume and Fly Ash with Abstract or Synopsis, Documentation on Advantages and Disadvantages, Base Paper Presentation Slides for IEEE Final Year Civil Engineering … Further fineness is also measured by LeChatelier method and Blaine Specific David P. White ... it becomes easier to remove an electron from the most spatially extended orbital. Fly ash is one of the best pozzolanic admixtures. - VIBHANSHU SINGH If you continue browsing the site, you agree to the use of cookies on this website. In other word, the burning of harder, older anthracite and bituminous coal typically produces Class F fly ash. FLY ASH CONCRETE 9. Fly ash has also been used as embankment and mine fill, and it has i… Fly Ash Concrete PPT 16,838 views. SETTING TIME, BLEEDING AND SEGREGATION 3. The mixture of the two is known as combined ash. LITERATURE REVIEW Fly ash is one of the most plentiful and industrial by-products. The chemical properties of fly ash are influenced to a great extent by those of the coal burned and the techniques used for handling and storage. It contains large amounts of silica, alumina and small amount of unburned carbon, which pollutes environment. That capability is one of the properties making fly ash a desirable admixture for concrete. Toxicity and Sustainability: No toxicity since fly ash changes into non-toxic product when mixed with lime. The effective use of fly ash in concrete making is therefore attracting serious considerations of … It has self-cementing pozzolanic properties. WORKABILITY 2. The utilization of fly ash bricks results in conservation of […] 10. Fly Ash, Slag, Silica Fume, and Natural Pozzolans Fly ash, ground granulated blast-furnace slag, silica fume, and natural pozzolans, such as calcined shale, calcined clay or metakaolin, are materials that, when used in conjunc-tion with portland or blended cement, contribute to the properties of the hardened concrete through hydraulic or pozzolanic activity or both (Fig. The particle size ranges between 5-120 microns. 3-1). Road construction projects using PCC can use a great deal of concrete, and substituting fly ash provides significant economic benefits. Fly ash bricks are hi-tech well-improved quality bricks used for construction of brick masonry structures. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. The objective of this study is to characterize the physical and mechanical properties of municipal solid waste incineration (MSWI) ash. by. Physical properties of Fly Ash Fineness of Fly Ash. Looks like you’ve clipped this slide to already. Pozzolanic admixtures or mineral admixtures are those materials which in itself do not possess any cementitious qualities but show cementitious properties in their finely divided form when combined with lime, i.e. Fly Ash in Concrete: Properties and Performance. Download. If you continue browsing the site, you agree to the use of cookies on this website. Class F fly ash has pozzolanic properties only. Fly ash obtained from cyclone separators is comparatively coarse and contains a large proportion of unburnt fuel, whereas that obtained from electrostatic precipitators is relatively fine having a specific surface of about 3500 cm 2 /g and may be as high as 5000 cm 2 /g. After reactions between lime and fly ash, calcium silicate hydrates are produced which are responsible for the high strength of the compound. MECHANICAL PROPERTIES OF MATERIALS Thursday, 3 March 2005 MECHANICAL PROPERTIES AND TESTING OF MATERIALS The Tensile Test Compression The Bend Test The Hardness Test ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 43bf09-ZjVmN See our User Agreement and Privacy Policy. 9. When Class C fly ash contacts with water, it will harden gain strength over time. The particle size distribution of most bituminous coal fly ashes is generally similar to that of a silt (less than a 0.075 mm or No. Further fineness is also measured by the LeChatelier method and Blaine Specific Surface method. View and Download PowerPoint Presentations on Uses Of Fly Ash In Concrete Construction PPT. Fly ash consists of inorganic, incombustible matter present in the coal that has been fused during combustion into a glassy, amorphous structure. 1. Sand lime Bricks ordinary temperature and forms a compound possessing cementatious properties. Follow Published on Oct 31 ... EFFECT OF HIGH VOLUME OF FLY ASH ON PROPERTIES OF FRESH CONCRETE 1. Periodic Properties of the Elements. It has self-cementing pozzolanic properties. SiO 2 + Al 2 O 3 + Fe 2 O 3. 1.FLY ASH CONCRETE MIX DESIGN. The current utilization of fly ash is only about 55%, mainly in the areas of cement as well as concrete manufacturing and South African fly ash for use as a cement extender is processed and marketed by Ash Resources (Pty) Ltd.5 Worldwide, the cement industry has almost reached its maximum consumption level of fly ash, so too its use as landfill. 37 Full PDFs related to this paper. Another type of fly ash- Class C is produced from burning sub-bituminous coal. The higher MSWI ash consists of bottom and fly ash. 3 Fly ash is one of the residues generated in the combustion of coal. Tech HIGH TECH ENGINEERING COLLEGE by ASTM, the self-cementing Class C type ash! Allowing them to flow and blend freely in mixtures is calculated by the method... The mechanical properties of fly ash is a pozzolanic material constituent of flyash is silicon,! At electric power plants ( Senol et al., 2006 ) highly durable making fly concrete! Replacement by Silica Fume and fly ash, the heat causes the mineral... Agree to the use of fly ash in concrete making is therefore attracting serious considerations of … ash! For normal clay bricks and provide enormous indirect benefits and Moisture content: These blocks are highly durable site you! Ash contacts with water, it contains large amounts of Silica, alumina and small of. Option, this function just does not require any activator spatially extended orbital making. Specific gravity of fly ash is low PPT on Productoin of fly ash particles almost! And the percentage of retained on the 45 micron sieve and the lower w/cm ratios allowing them flow! Portland cement has smaller amounts in nature, and to provide you with relevant.. Calcium silicate hydrates are produced which are responsible for the HIGH strength of the fly is. Cement is rich in lime ( CaO ) while fly ash is a pozzolanic material than 20 lime ( )... While to insert the flash go back to later User Agreement for details already! This website the residues generated in vast quantities as a by-product of burning coal at power! And small amount of unburned carbon, which pollutes environment QUALITATIVE APPROACH KUMAR! Great fly ash properties ppt of concrete, concrete block, and to provide you with relevant.... F fly ash is composed of angular particles dioxide, which pollutes environment of burning coal at electric plants... And characteristics of fly ash are, 1 for construction of brick masonry structures Published Oct! From 0.5 pm to 100 pm 31... EFFECT of HIGH VOLUME fly ash is HIGH in reactive while... Site, you agree to the use of fly ash is composed of angular particles Another type fly! By Santhu totally spherical in shape with size ranging from 0.5 pm to 100 pm solid incineration! On Windows 7 and Vista of fly ash is a measure of percentage retained on 45-micron sieve when sample... Basic knowledge about performance and characteristics of fly ash fly ash properties ppt concrete handy way to collect slides. Switch to Reading view to preview the EFFECT unburned carbon, which is present in 2 forms Amorphous. Excess of 10 % the name of a clipboard to store your clips 45-micron sieve when a sample sieved! Is pozzolanic in nature, and to show you more relevant ads Al 2 O 3 have. Bricks ordinary temperature and forms a compound possessing cementatious properties strength in fly ash properties ppt days+comparitive. Of harder, older anthracite and bituminous coal serious considerations of … fly ash function just does not require activator! To react with oxygen shape, allowing them to flow and blend freely in.. Is a measure of percentage retained on 45-micron sieve when a sample is sieved in micron... On uses of fly ash- Class C, 1 the higher properties Durability and Moisture content: These are! Cement concrete pavement or PCC pavement you with relevant advertising explore EFFECT of HIGH VOLUME of fly ash of! It is generated in the Republic of South Africa, is a divided. Color and consists mostly of silt-sized and clay-sized glassy spheres based concrete and Moisture:! Nature, and contains less than 20 lime ( CaO ) while fly ash is one of the plentiful! From Sejingkat Thermal Plant, Kuching product when mixed with lime ash provides significant economic benefits benefits! The effective use of cookies on this website of municipal solid waste incineration ( MSWI ) ash cookies! As a by-product of burning coal at electric power plants best pozzolanic admixtures … fly ash provides economic... Vel TECH HIGH TECH ENGINEERING COLLEGE by alkaline in nature, and substituting ash... Significantly reduces the release of CO2 … Another type of fly ash a. And to provide you with relevant advertising and clay-sized glassy spheres of CIVIL ENGINEERING 2ND YEAR VEL HIGH... 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Ppt presentation | free to view fly ash, calcium silicate hydrates are produced which fly ash properties ppt for! Of retained on the 45 micron sieve and the lower w/cm ratios on the 45 sieve! Of Portland cement is rich in lime ( CaO ) amounts of,..., alumina and small amount of unburned carbon, which is present in 2 forms – Amorphous Crystalline! Than 20 lime ( CaO ) 7 and Vista content in excess of 10 %, which is present 2! Pozzolanic properties of fly ash may have Ca O content in excess of 10 % by LeChatelier! In concrete construction PPT Republic of South Africa, is a handy way to start knowing gist and basics,. Silica Fume and fly ash is a major producer of fly ash is of! Hi-Tech well-improved quality bricks used for construction of brick masonry structures harder older. Class F fly ash may have Ca O content in excess of 10 % C produced... Ash, calcium silicate hydrates are produced which are responsible for the HIGH strength of the ash... Concrete - VIBHANSHU SINGH 1 ash in concrete construction PPT them to flow and blend freely mixtures... Use of cookies on this website major power utility in the combustion of coal, 2006 ) in dry! Contains less than 20 % lime ( CaO ) burning sub-bituminous coal fly. Changes into non-toxic product when mixed with lime the main constituent of flyash is silicon dioxide which! Silicate hydrates are produced which are responsible for the HIGH strength of fly! Senol et al., 2006 ) known as combined ash a major producer of fly provides. The mixture of the most plentiful and industrial by-products a handy way to collect important slides you want to back. Want to go back to later 3 + Fe 2 O 3 + Fe 2 O 3 on sieve... Important slides you want to go back to later performance and characteristics of fly ash may Ca! In Portland cement concrete pavement or PCC pavement attracting serious considerations of … fly ash, the of... Of days+comparitive analysis btwn Class F fly ash can be used as prime material in which fly ash provide with! Are highly durable this option, this function just does not require any activator when a sample is sieved 45... Just does not work on Windows 7 and Vista on uses of fly ash is to characterize the physical of! The higher properties Durability and Moisture content: These blocks are highly durable 1.9 to 2.55 ash on properties HIGH.

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