Table 3 gives the pozzolanic activity of various materials. Some of main Nano materials used in concrete: •Carbon Nanotubes. 3) Prepared raw mix is fed into the rotary kiln. Or use it to create really cool photo slideshows - with 2D and 3D transitions, animation, and your choice of music - that you can share with your Facebook friends or Google+ circles. Use of finely divided pozzolanic materials reduces bleeding by creating a longer path for the water to traverse. Pozzolan a material that, when used in conjunction with portland cement, contributes to the properties of the hardened concrete through hydraulic or pozzolanic … Winner of the Standing Ovation Award for “Best PowerPoint Templates” from Presentations Magazine. DETERMINATION OF POZZOLANIC ACTIVITY • Pozzolanic activity is determined by “strength activity indexes” • Six mortar cubes are prepared (ASTM) →”Control Mixture” 500 g portland cement+1375 g sand+242 ml water →”Test Mixture” 400g of portland cement+100g of pozzolan+1375g of sand+some water for the same consistency, Compressive testing at 7 or 28 days • Strength Activity Index (SAI) =A/B*100 • A=f’c of test mixture • B=f’c of control mixture • ASTM C 618 → SAI ≥ 75%, CHEMICAL COMPOSITION OF POZZOLANS • Silica Fume is mostly SiO2 • G. G. Blast Furnace Slag→ high amounts of CaO (self-cementitious) • Class C Fly Ash has CaO (self-cementitious), FLY ASH SILICA FUME GRANULATED BLAST FURNACE SLAG, Typical Amounts of Pozzolans in Concrete by Mass of Cementing Materials • Fly ash • Class C 15% to 40% • Class F 15% to 20% • Slag 30% to 45% • Silica fume 5% to 10% • Calcined clay 15% to 35% • Metakaolin 10% • Calcined shale 15% to 35%, REQUIREMENTS FOR AN ACCEPTABLE QUALITY OF POZZOLAN • TS 25 → Natural Pozzolans • TS 639 → Fly Ash • ASTM C 618 → For Natural Pozzolan & Fly Ash, USES OF POZZOLANS 1) Direct use of Pozzolan by Mixing it with Calcium Hydroxide Extensively used in ancient times but not very common now. Nanotechnology is the understanding, control, and restructuring of matter on the order of nanometers (i.e., less than 100 nm) to create materials with fundamentally new properties and functions. The name Pozzolan comes from the town Pozzuoli, Ancient Romans (100 B.C.) … Pozzolanic materials do not change the types of hydrates that form from the hydration of C 3 A. presentations for free. • Ancient Romans (~100 B.C.) In geopolymer concrete cement is not us… Geopolymer concrete ppt … Researches [10,11] have demonstrated that pozzolanic activity of glassy materials is mainly depended on their chemical composition, fineness, and glassy phase content. POZZOLANS (Supplementary Cementitious Materials). vi. - construction materials and concrete baran arslan - 20519522 ay a eker - 20772831 serkan ko - 20519814 t.g zem aksoy - 20519497, | PowerPoint PPT presentation | free to view. CE530 Properties and Production of Concrete Homework Assignment #3 - … Pozzolanic materials can be divided into the categories listed below, according to their origin and properties. Pozzolan. Captures CO2 for bottling and sale to the oil industry (geological sequestration) ... - Implementing Sustainability Presentation by John Harrison, managing director of TecEco and inventor of Tec and Eco-Cements and the CarbonSafe process. With further reduction in water content, enhanced activity can be obtained using ppt. Hence the present study aims to utilize pozzolanic materials … That’s why the early strength is low but the ultimate strength is theearly strength is low but the ultimate strength is the same when compared to O.P.C.same when compared to O.P.C. Nanotechnology is one of the most active research areas that include a number of disciplines including civil engineering and construction materials. 2) Raw materials are mixed with definite proportions to obtain “raw mix”. In case of fly ash as received from the thermal power … ltd., tasmania, Supplementary Figure 1 - . The Ch & the pozzolanic material react together to produce new C-S-H gels. (Do not possess pozzolanic activity) • However, by heat treatment, such as calcining ~700-900°C crystallic structure is destroyed & a quasi-amorphous structure is obtained. air. Due to slow pozzolanic reaction, the compressive strength at later ages of high volume fly ash concrete will be general good8. • This will … • Improve workability; • Lower costs. The pozzolanic materials … Volcanic … fly ash is one of the world's most commonly used pozzolans.pozzolans are, Develop a Simple and Rapid Test for Monitoring the Heat Evolution of Concrete Mixtures for both Laboratory and Field, ADDING VALUE WITH SUPPLEMENTARY PRODUCT ELEMENTS - 8-1 learning objectives after finishing this chapter, you should be, FACTORS THAT AFFECT THE ACTIVITY OF POZZOLANS, Typical Amounts of Pozzolans in Concrete by Mass of, REQUIREMENTS FOR AN ACCEPTABLE QUALITY OF POZZOLAN. Ancient Romans ( ~ 100 B.C.) Pozzolanic materials are siliceous or siliceous and aluminous materials, which in themselves possess little or no cementitious value, but will , in finely divided form and in the presense of moisture, chemically react with calcium hydroxide liberated on hydration, at ordinary temperature, to form compounds, possessing cementitious properties. If so, share your PPT presentation slides online with PowerShow.com. stabilizer (cementitious material) and soilminerals (pozzolanic materials) to achieve the desired effect. list of primers used for real time, Korea Hydro & Nuclear Power Co., Ltd. (KHNP) Nuclear Engineering & Technology Institute (NETEC) - The 2nd, Supplementary figure legends - Supplementary figure s1. - Beautifully designed chart and diagram s for PowerPoint with visually stunning graphics and animation effects. Our new CrystalGraphics Chart and Diagram Slides for PowerPoint is a collection of over 1000 impressively designed data-driven chart and editable diagram s guaranteed to impress any audience. PowerShow.com is a leading presentation/slideshow sharing website. That’s why thetogether to produce new C-S-H gels. Cement On Pre-Qualified Product s List (PQPL)? a. b. supplementary figure 1. l1 and alu retrotransposition assay. a. b. c. d/e. And finally, precast can be produced indoors regardless of weather conditions. Ancient Romans ( ~ 100 B.C.) possess pozzolanic property. pph ppk ppm ppm. CrystalGraphics 3D Character Slides for PowerPoint, - CrystalGraphics 3D Character Slides for PowerPoint. Or use it to upload your own PowerPoint slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world. a. Pozzolans and Their Effects on. 4) As the materials pass through the kiln their temperature is rised upto 1300-1600 °C. These materials can improve concrete properties such as compressive strength, durability and impermeability through hydraulic or pozzolanic activity. These are supplementary cement replacing materials that have become a new era for construction industry sectors due to their pozzolanic properties. the genotype cluster plot of rs16835244 in arginin decarboxylase, Supplementary Figure 1 - . Pozzolanic Activity: Capacity of pozzolan to form alumino-silicates with lime to form cementitious products. supplementary figure 2. v. iv. Slag Ground granulated blast furnace slag, ... - TecEco Cement Concretes Abatement, Sequestration and Waste Utilization in the Built Environment If we can make materials that take less than half as much energy ... - Title: Slide 1 Last modified by: John Harrison Created Date: 7/15/2003 10:26:18 PM Document presentation format: On-screen Show Company: none Other titles. Originating in 12th-century France and lasting into the 16th century produced a hydraulic, Horasan mortar, mixing lime with finely divided, Nowadays, the word pozzolan covers a broad range, a material that, when used in conjunction with, Natural (Volcanic ash, volcanic tuff, pumicite), Artificial (fly ash, silica-fume, granulated, Siliceous or aluminous material, which in itself, C-S-H provides the hydraulic binding property of, Pozzolanic Activity Capacity of pozzolan to form, 2) The degree of amourpheness of its structure, The greater amount of these, the greater its, ASTM C 618 TS 25 ? If you have your own PowerPoint Presentations which you think can benefit others, please upload on LearnPick. introducing synthetic pozzolan. Get powerful tools for managing your contents. They are all artistically enhanced with visually stunning color, shadow and lighting effects. This document is highly … It is used as replacement of cement concrete. john harrison, tececo pty. Create stunning presentation online in just 3 steps. - Magnesian Cements Fundamental for Sustainability in the Built Environment Hobart, Tasmania, Australia where I live I will have to race over some s but the ... - HOT WEATHER CONCRETING Detrimental hot weather conditions include: High ambient temperature. 1. effect of g a s on the phosphorylation of atm following g -ray, [Supplementary materials] - . World's Best PowerPoint Templates - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. The Pozzolanic Reaction Pozzolanic Reaction CH+S+aq CSH Portland Cement Hydration C3S + aq CSH + CH The pozzolanic reaction is slow, so the rate of the strength development and the heat of hydration associated with this reaction are low. 2010 Google Scholar]. • Volcanic tuff, granulated blast furnace slag & burned clay must be ground. Phosphorylation of atm following g -ray, [ supplementary materials ] - cementitious products figure! 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