Smart concrete | PPT
The mix was prepared with: Fibre content is 0.2 vol. % of cement Silica fume content is 15% by weight of cement Methylcellulose content is 0.4% by weight of cement 1. The mix was molded into square shape with 2 embedded electrode, 1 cm apart. 2. The specimen were cured at standard temperature of 20 degrees centigrade and 100 % humidity.
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Concrete admixtures | PPT
2. Silica fume (Cont.) Effect of Silica Fume on fresh concrete: • The increase in water demand of concrete. • Lead to lower slump but more cohesive mix. • Make the fresh concrete sticky in nature and hard to handle. • Large reduction in bleeding and concrete with microsilica could be handled and transported without segregation.
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PARTIAL REPLACEMENT OF CEMENT IN CONCRETE BY …
Performance concrete using silica fume so as to achieve better concrete composite and also to encourage the increased use of silica fume to maintain ecology. 3. MIX DESIGN Water cement ratio w/c = 0.45 water content = 197.4 kg/m3 Cement content = (197.4/0.44) = 448.6 kg/m3 Volume of all in aggregate = 1 – [{448.6/(3.15 x 1000)} + ...
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4. pozzolans.ppt
3. Pozzolan a material that, when used in conjunction with portland cement, contributes to the properties of the hardened concrete through hydraulic or pozzolanic activity, or both. – Natural (Volcanic ash, volcanic tuff, pumicite) – Artificial (fly ash, silica-fume, granulated blast furnace slag)
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master file -- hpc, silica fume conc
Silica-Fume Concrete: Long-Term Performance Illinois State Route 4, bridge over I-55 Constructed 1973 October, 1986: southbound lane repaired with dense concrete, w/cm = 0.32 March, 1987: northbound lane repaired with silica-fume concrete, w/cm = 0.31, sf = 11% Illinois State Route 4, Bridge over I-55 What About Cracking of HPC Silica-Fume ...
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Geopolymer concrete ppt | PPT
Geopolymer concrete ppt - Download as a PDF or view online for free ... • Utilise waste materials from industries such as fly ash, silica-fume, GGBS. • Protect water bodies from contamination due to fly ash disposal. • Conserve acres of land that would have been used for coal combustion products disposal. • Produce a more durable ...
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The mechanical and microstructural investigations of concrete
This study explores the durability of concrete composites containing textile and cardboard fibers, with a focus on using silica fume as a modification technique for the kraft …
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PPT – Silica Fume in Concrete: Enhancing Strength and …
In this blog post, we will explore how silica fume in concrete enhances its strength and durability; its benefits, and its contribution to sustainable building practices. – PowerPoint …
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ROLE OF FLY ASH AND SILICA FUME ON …
Property/Composition Cement Fly Ash Silica Fume Specific Gravity 3.15 2.00 to 2.05 2.2 Standard Consistency 29.00% – – ...
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master file -- hpc, silica fume conc
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Fly ash concrete | PPT
Fly ash concrete - Download as a PDF or view online for free. Submit Search. ... - Fly ash - Silica fume - Slag - Other such s rice husk, metakaolin, etc. IS 3812 (part 1) - Pulverized Fuel Ash- for use as pozzolan in cement, cement mortar and concrete IS 3812 (part 2) -pulverized Fuel ash- For use as admuxture in cement mortar and concrete. ...
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Silica Fume Concrete
137700430-SILICA-FUME-CONCRETE.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Rahim gave a seminar on using silica fume as an admixture in …
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PPT – Chapter 2. Using Silica Fume in Concrete …
Silica-Fume Concrete Typical Strengths 15 10 5 0 Control mixture cement 658 lb/yd3 w/c 0.41 air 5 0 3 7 28 60 Age, days 6 Silica-Fume Concrete Typical Strengths 15 10 5 0 Control mixture cement 390 kg/m3 w/c 0.41 air 5 0 3 7 28 …
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PPT
In modern construction, innovations that enhance material performance while promoting sustainability are highly valued. One such innovation is the use of silica fume in concrete, a game-changer in the field of civil engineering. Silica fume is derived as a byproduct from the production of silicon and ferrosilicon alloys. Silica fume has found an important role in …
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Effect of Silica Fume in Concrete on Mechanical Properties and …
The effect of silica fume (SF) in concrete on mechanical properties and dynamic behaviors was experimentally studied by split Hopkinson pressure bar (SHPB) device with pulse shaping technique. Three series of concrete with 0, 12%, and 16% SF as a cement replacement by weight were produced firstly. Then the experimental procedure for dynamic ...
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Chapter 2. Using Silica Fume in Concrete | PDF
sfa_ch2.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. The document discusses ways that adding silica fume to concrete can enhance its mechanical properties, durability, and constructability. It enhances mechanical properties through increased strength and modulus of elasticity.
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Admixture of concrete | PPT
36. Microscopic air bubbles intentionally incorporated in mortar or concrete during mixing, usually by use of a surface-active agent; typically between 10 &1000 μm in diameter and spherical or nearly so. ♫ It is the process whereby many small air bubbles are incorporated into concrete and become part of the matrix that binds the aggregate together in the hardened …
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What is silica fume?
It acts as a mineral filler and also as a pozzolan, leading to concrete of high strength and low permeability. Silica fume is marketed in different forms: as-produced, densified or compacted, and slurried. References: SP-1(02); ACI CT-23; ACI 234R-06; E3-13; ASTM C1240. Topics in Concrete: Silica Fume; Concrete Fundamentals; Materials; Pozzolan
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master file -- hpc, silica fume conc
conc0364 Silica fume concrete being discharged into a concrete pump. The majority of silica-fume concrete has been pumped into place over the years. It is an extremely pumpable concrete. conc0744 Typical set up of a concrete pump delivering silica-fume concrete onto one of the upper levels of a large parking structure.
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Silica fume as Partial Replacement of Cement in …
The study of the mechanical properties of high performance concrete mixed with silica fume aims to study the effect of adding silica fume as a partial replacement of cement on grades M60, M70 and ...
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Silica Fume | PDF | Silicon Dioxide | Concrete
130263780-silica-fume.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. This document discusses the use of silica fume in concrete. It defines silica fume as an ultrafine powder collected during silicon and ferrosilicon production. The addition of silica fume to concrete improves strength and durability by filling …
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NS Nano silica in concrete ppt
Nano silica (also named as nano-silicon dioxide) is a kind of inorganic chemical material, commonly known as white carbon black. Because of its ultra-fine nano scale and its size range of 1-100nm, it has many unique properties, such as optical properties against ultraviolet, which can improve other materials' anti-aging, strength and chemical resistance. A very […]
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Fly ash concrete ppt | PPT
Fly ash concrete ppt - Download as a PDF or view online for free ... and contains a greater combination of silica, alumina and iron (greater than 70 percent) than Class C fly ash. Class C fly ash comes from coals which may produce an ash with higher lime content — generally more than 15 percent often as high as 30 percent. Elevated CaO may ...
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Silica Fume Admixtures
Silica Fume Admixtures Durability-enhancing admixture. ... Products. MasterLife SF 100. Silica fume to produce extremely strong concrete. Product downloads. MasterLife SF 100. Safety Data Sheets (SDS) PDF 223kb. Download. MasterLife SF 100. Safety Data Sheets (SDS) PDF 199kb. Download. MasterLife SF 100 Data Sheet . Technical Data Sheets ...
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PPT
Chapter 3. Obtaining Silica-Fume Concrete. Specifying Silica Fume and SFC Proportioning SFC Producing SFC. Specifying Silica Fume and Silica-Fume Concrete. Chapter Outline. Specifying Silica Fume. ASTM C 1240 AASHTO M 307 CSA A 23.5. Key Provisions: ASTM C 1240. Slideshow 208199 by betty_james
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PPT – Silica Fume in Concrete: Enhancing Strength and …
In this blog post, we will explore how silica fume in concrete enhances its strength and durability; its benefits, and its contribution to sustainable building practices. – A free PowerPoint PPT presentation (displayed as an HTML5 slide show) on PowerShow - id: 99c17e-ODEwO
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Chapter 2. Using Silica Fume in Concrete
Silica Fume Market - Global Analysis and Forecast to 2020. Silica Fume Market by Application (Building Construction, Marine Structure Construction, Oil & Gas Well Grouting, Nuclear Power Plant Construction, …
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master file -- hpc, silica fume conc
Bridge Decks Parking Structure High-Rise Columns HPC Bridge Shotcrete Rehabilitation HPC Constructability Bridge Decks -- New Construction and Overlays (Fly Ash and Silica Fume Combination) Project: Bridge Deck Construction New York State DOT High-Performance Concrete Concrete Mixture: Portland cement 500 lb/yd3 Fly ash 135 lb/yd3 Silica fume 40 …
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Silica fume | PPT
9. REAL TIME EXAMPLES Silica fume was used for one of the flyovers at Mumbai where, for the first time in India 75 MPa concrete was used (1999). At present, India is not producing silica fume of right quality. Recently, …
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