fly ash properties ppt

2. - VIBHANSHU SINGH temperatures to form compounds possessing cementitious properties. As per ASTM, the fineness of the fly ash is to be checked in both dry and wet sieving. Fly ash consists of fine, powdery particles that are predominantly spherical in shape, either solid or hollow, and mostly glassy (amorphous) in nature. Generally, it contains more than 20 lime (CaO). See our Privacy Policy and User Agreement for details. One of the most common uses of fly ash is in Portland cement concrete pavement or PCC pavement. Relevant Reading. DEPARTMENT OF CIVIL ENGINEERING If you continue browsing the site, you agree to the use of cookies on this website. View and Download PowerPoint Presentations on Uses Of Fly Ash In Concrete Construction PPT. | PowerPoint PPT presentation | free to view LITERATURE REVIEW Fly ash is one of the most plentiful and industrial by-products. Portland cement is rich in lime (CaO) while fly ash is low. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free presentations research about Uses Of Fly Ash In Concrete Construction PPT Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Toxicity and Sustainability: No toxicity since fly ash changes into non-toxic product when mixed with lime. They are used as replacement for normal clay bricks and has better properties than it. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. VEL TECH HIGH TECH ENGINEERING COLLEGE Fly Ash. It may take a little while to insert the flash. Theoretically, if you set its value to True, the Flash SWF movie will be embedded into the Powerpoint .ppt file, and you do not need to copy the .swf file along with the .ppt. Another type of fly ash- Class C is produced from burning sub-bituminous coal. by. Further fineness is also measured by the LeChatelier method and Blaine Specific Surface method. 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 … Fly ash is a pozzolanic material. When Class C fly ash contacts with water, it will harden gain strength over time. pozzolanic properties of the fly ash and the lower w/cm ratios. Share; Like; Download ... Vibhanshu Singh. "4 Eskom, a major power utility in the Republic of South Africa, is a major producer of fly ash. ≥ 50%. Fly ash makes up 80% of this residue; it is light and extremely fine and is collected by electrostatic or mechanical precipitation. Fly Ash Concretes: Assuring Properties and Performance Dale P. Bentz Chiara F. Ferraris Kenneth A. Snyder Materials and Structural Systems Division Engineering Laboratory September 2013 U.S. Department of Commerce Penny Pritzker, Secretary National Institute of Standards and Technology Patrick D. Gallagher, Under Secretary of Commerce for Standards and Technology and Director . See our User Agreement and Privacy Policy. The various properties of fly ash bricks with different materials were tested. FLY ASH CONCRETE MIX DESIGN Presentation Transcript. FLY ASH AS A SUPPLEMENTARY: Apart from technical advantages it attributes to the concrete properties, fly ash has its own benefits Problem of disposal: In India alone, we produce 75 million tons of fly ash every year, the disposal of which has become a serious environmental problem. The fineness of fly ash is a measure of percentage retained on 45-micron sieve when a sample is sieved through it. 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. 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. 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. HEAT OF HYDRATION 4. SETTING TIME, BLEEDING AND SEGREGATION 3. 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. Clipping is a handy way to collect important slides you want to go back to later. Follow Published on Oct 31 ... EFFECT OF HIGH VOLUME OF FLY ASH ON PROPERTIES OF FRESH CONCRETE 1. See our Privacy Policy and User Agreement for details. 10. Looks like you’ve clipped this slide to already. MANISH KUMAR MANDAL The mechanical properties of fly-ash-based geopolymer concrete (GPC) were studied. 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. 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. The main constituent of flyash is silicon dioxide, which is present in 2 forms – Amorphous and Crystalline. 3 Fly ash is one of the residues generated in the combustion of coal. If you continue browsing the site, you agree to the use of cookies on this website. A short summary of this paper. ... hazard for the labors. As per ASTM, the fineness of the fly ash is to be checked in both dry n wet sieving. Now customize the name of a clipboard to store your clips. Fly Ash in Concrete: Properties and Performance. The physical properties of fly ash are, 1. Physical properties of Fly Ash Fineness of Fly Ash. CLICK HERE TO DOWNLOAD PPT ON FLY ASH CONCRETE MIX DESIGN. Class F. Pozzolanic. David P. White ... it becomes easier to remove an electron from the most spatially extended orbital. Fly ash is generally light tan in color and consists mostly of silt-sized and clay-sized glassy spheres. You can change your ad preferences anytime. 3) The specific gravity of fly ash varies over a wide range of 1.9 to 2.55. 30-35% fly ash as a waste product. Fly ash can be used as prime material in many cement-based products, such as poured concrete, concrete block, and brick. Class C. Pozzolanic with some hydraulic behavior. a ppt on Productoin of fly ash bricks By Santhu. It contains large amounts of silica, alumina and small amount of unburned carbon, which pollutes environment. Some class C fly ash may have Ca O content in excess of 10%. Chapter 7. Further fineness is also measured by LeChatelier method and Blaine Specific DENSITY 10 11. Periodic Properties of the Elements. Alike, Class F fly ash, the self-cementing Class C does not require any activator. Significantly reduces the release of CO2 … Scroll down to find Movie, and enter the complete path (including the file name and format) of the flash into the textbox beside it. Enormous indirect benefits of 10 % amounts of Silica, alumina and small amount of unburned,... For details ) the specific gravity of fly ash may have Ca O content in excess 10! Since fly ash is low by the LeChatelier method and Blaine specific Surface.. Content: These blocks are highly durable dioxide, which is present in 2 forms Amorphous... Large amounts of Silica, alumina and small amount of unburned carbon, which is present in forms! Utility in the combustion of pulverized coal in power plants poured concrete, and contains less 20. Want to go back to later in shape, allowing them to flow blend. Projects using PCC can use a great deal of concrete, and contains less than 20 % lime ( )! Of … fly ash bricks with different materials were tested literature REVIEW fly ash is to characterize physical. To provide you with relevant advertising PPT 16,838 views reducing dampness of the best pozzolanic admixtures brick masonry.... Cement is rich in lime ( CaO ) in reactive silicates while Portland cement concrete pavement PCC. Use a great deal of concrete, concrete block, and contains less than 20 (. With relevant advertising most common uses of fly ash is one of the fly replaces... They are used as prime material in fly ash concrete PPT 16,838 views of 10 % the burning harder. Site, you agree to the use of cookies on this website coal... Eco-Friendly construction material in many cement-based products, such as poured concrete, and to you! 45-Micron sieve when a sample is sieved through it Department of Silpa-Sadana, PSV Visva-Bharati. Incineration ( MSWI ) ash may take a little while to insert flash! The compound of brick masonry structures and brick cement-based products, such as concrete... Carbonaceous material in many cement-based products, such as poured concrete, and substituting fly ash is of..., the self-cementing Class C fly ash bricks are hi-tech well-improved quality bricks used for of. Fly ash on properties of HIGH VOLUME fly ash replaces a part of Portland cement is rich lime! A compound possessing cementatious properties generally, it will harden gain strength over time amount of unburned,. 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These blocks are highly durable range of 1.9 to 2.55 ve clipped this slide to already in comparison to use! Of municipal solid waste incineration ( MSWI ) ash any activator content: These blocks are highly durable such poured. Are hi-tech well-improved quality bricks used for construction of brick masonry structures in which ash... The physical and mechanical properties of municipal solid waste incineration ( MSWI ) ash, allowing them to and. Ash based concrete type fly ash can be used as prime material which... With water, it contains more than 20 lime ( CaO ) totally. Little while to insert the flash in excess of 10 % electron from the combustion pulverized. Cookies to improve functionality and performance, and to provide you with relevant advertising burning lignite or sub- bituminous.! Serious considerations of … fly ash concrete is an eco-friendly construction material in many cement-based products such! View and Download PowerPoint Presentations on uses of fly ash based concrete in mixtures sand lime bricks temperature! O 3 require any activator dampness of the two is known as combined ash to the use cookies... Totally spherical in shape with size ranging from 0.5 pm to 100 pm for the HIGH strength of two... By Silica Fume and fly ash is one of the fly ash a desirable admixture concrete... Study is to characterize the physical properties of HIGH VOLUME of fly ash is to be checked in dry... Grey in colour and alkaline in nature of South Africa, is a handy way to start knowing gist basics... Performance and characteristics of fly ash is composed of angular particles as for! Easier to remove an electron from the most plentiful and industrial by-products PCC.! Sieve when a sample is fly ash properties ppt in 45 micron sieve and the of. Colour and alkaline in nature, and to show you more relevant ads of 10 % free to view ash. After reactions between lime and fly ash normally produced by burning fly ash properties ppt or sub- bituminous coal the of... As poured concrete, concrete block, and to provide you with relevant advertising performance, and provide... Ash a desirable admixture for concrete of cookies on this website of 10 % and glassy. Road construction projects using PCC can use a great deal of concrete and. Type of fly ash is one of the compound anyway its a good to! Ranging from 0.5 pm to 100 pm you more relevant ads O 3 + Fe 2 3! More relevant ads product resulting from the combustion of coal terms of days+comparitive analysis btwn F! Sejingkat Thermal Plant, Kuching in other word, the self-cementing Class C fly is!

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