Smelter before installation of equipment to collect silica fume. This presentation covers all aspects of using silica fume in concrete and can be viewed directly in your browser. A parametric experimental study has been conducted to investigate the effect of silica fume and polypropylene fiber on the fracture properties of concrete composite. Also explore the seminar topics paper on silica fume with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year civil engineering ce or ieee civil construction btech, be, mtech students for the year 2017 2018. This term simply means that silica fume is not a crystalline material. Silica fume seminar report, ppt, pdf for civil engineering. The bulk density of silica fume depends on the degree of densification in the silo and varies from undensified to 600 kgm 3. Effect of silica fume on the mechanical properties of fly. Silica fume was added to the kaolinite clay to enhance the. The slump of m40 concrete with 100% opc was higher than those of geopolymer concretes with fly ash and silica fume. The improvement of geotechnical properties of weak soils is of interest through the resources shortage. To facilitate handling, particularly its addition to the concrete mixes, silica fume is commonly blended with water. Silica fume, also known as microsilica, is an extremely fine noncrystalline polymorph of silica and is produced in electric arc furnaces eafs as a byproduct of silicon and ferrosilicon alloy production. Effect of superplasticizer and silica fume on properties of.
Properties of silica fume the physical and chemical properties of silica fume visavis, opc are presented in table 1. Utilization of fly ash with silica fume and properties of portland cementfly ashsilica fume concrete. Fumed silica is being used in various fields such as pharmaceuticals, paints, adhesives and sealants, plastics, rubber and ink except for concrete. Effects of silica fume and fly ash as partial replacement. The use of silica fume in concrete should be limited to specialized applications that can take full advantage of its unique properties. The chemical composition of silica fume is reported in rodella et al. Effect of silica fume and ggbs on concrete properties. This makes it approximately 100 times smaller than the average cement particle. Explore silica fume with free download of seminar report and ppt in pdf and doc format. Effect of silica fume on mechanical properties of high. Return to article details the influence of polymer latex and silica fume additives on the properties of cement mortar and concrete download download pdf.
Properties of silica fume related to its applications. It is ultrafine powder with an average particle size of 0. Effect of silica fume on the mechanical properties of fly ash. Silica fume, cement, composite, physical properties, chemical properties, concrete properties. Pdf mechanical properties of high performance silica fume. Request pdf effect of silica fume on mechanical properties of highstrength concrete this paper presents the results of experimental work on short and longterm mechanical properties of high. Cement mortar is the origin of the worse properties of recycled aggregates. In this paper, the effects of incorporating silica fume sf in the concrete mix design to. Effect of silica fume on mechanical properties of highstrength. Chemical physical properties of silica fume silica fume for.
Frontiers a new porous hybrid material derived from silica. Silica fume, pozzolan, workability, compressive strength, flexural strength. Silica fume is pozzolainc material and is available in different forms. Effect of superplasticizer and silica fume on properties. View of the influence of polymer latex and silica fume additives on. Black, in sustainability of construction materials second edition, 2016.
Effects of metakaolin and silica fume on properties of concrete article pdf available in aci materials journal 994. A new porous hybrid material derived from silica fume and. Silica fume micro silica is a byproduct from the manufacture of ferrosilicon alloys and silicon metal. The effects of silica fume on the mechanical and physical properties such as compressive. Concrete with 10% sf and 520% wmp exhibited the optimal mechanical properties. Influence of silica fume on mechanical and physical properties of. Bureau of reclamation engineering and research center denver, co 80225 0 11. The aim is to find the percentage of silica fume and of vma that allow to obtain the same mechanical and rheological characteristics. Silica fume is a byproduct of the silicon and ferrosilicon alloy production the main aim of this work is to find the optimum quantity of. Therefore, this study focused on the effect of silica fume as industrial waste products and nanosilica on geotechnical characteristics and microstructural properties of kaolinite clay as a soft soil with poor strength properties.
Properties of the fumed silica and silica fume have been shown in table 1. Book description this information paper provides an introduction for engineers and specifiers to the industrial byproduct silica fume and its use as a supplement to cem i portland cement, to produce and place high performance durable concretes. Silica fume technical data sheet silica fume is a very fine pozzolanic material, composed of amorphous silica produced by electric arc furnaces as a byproduct of the production of elemental silicon or ferro silicon alloys. Metakaolin and silica fume on fly ash concrete performance. Mar 19, 2018 to prepare samples, food grade calcium bicarbonate was bought in a local store. Slump of fly ash based geopolymer concrete with various amounts of silica fume in relation to control. It is used in a number of industries, including glass making, electronics, and as food additives and abrasives. Silica fume sf modifies interfacial transition zone between cement paste and aggregate at the micro level.
From the analysis of literature, it is visible that active silica fume was initially used only as means for increase in strength. All bsi british standards available online in electronic and print formats. Guide to using silica fume in precastprestressed concrete. In this work a new mesoporous adsorbent material obtained from a natural, high abundant raw material and a high volume industrial byproduct is presented. Silica fume, also known as microsilica, is an extremely fine noncrystalline polymorph of silica and is produced in electric arc furnaces eafs as a byproduct of silicon and ferrosilicon alloy production while the first trials of silica fume as an. This ultrafine material will better fill voids between cement particles and result in a very dense concrete with higher compressive strengths and extremely low permeability. Product overview technical data download pdf contact us silica fume, also known as microsilica, is a mineral composed of ultra fine amourphous spheres of silicon dioxide sio2 and is a byproduct of the manufacturing of silicon metal or ferro silicon. Determining the compressive, flexural and splitting tensile. Silica fume contains 85% to 98% silicon dioxide and has an average particles size that is 100 times smaller than cement particles. It is an ultrafine powder collected as a byproduct of the silicon and ferrosilicon alloy production and consists of spherical particles with an average particle diameter of 150 nm. Silicafume sf has been used as a partial replacement for cement in concrete and.
Mechanical properties of self compacting concrete download. High performance concrete hpc is defined as the concrete. Pozzolanic and cementitious a combination of both properties. Silica fume will chemically react with the calcium hydroxide released by the hydration of portland cement to form compounds possessing superior cementitious properties. Silica fume concrete is composed of cement, silica fume, fine aggregate, coarse aggregate, and water. Pdf optimize properties of concrete with silica fume.
The smoke is silica fume being released to the atmosphere. This experimental study is built around the characterization of the effect of viscosity modifying agent vma and silica fume on the rheological and mechanical properties of self compacting concrete. Pdf effects of metakaolin and silica fume on properties. The addition of silica fume to concrete improves the latters durability by reducing permeability and refining pore structure, leading to a reduction in the diffusion of harmful ions and the calcium hydroxide content, resulting in greater resistance to sulfate attack. Silica fume has been recognized as a pozzolanic admixture that is effective in greatly enhancing mechanical properties. Influence of silica fume and polypropylene fiber on fracture.
Silica fume is an amorphous non crystalline polymorph of silicon oxide. A crystalline material will not dissolve in concrete, which must occur before the material can react. The use of silica fume in conjuction with superplastisizers has become the backbone of high strength and high performance concrete. The physical properties of high strength silica fume concretes and. Pdf high performance concrete is a recent concept in concrete technology. Produced through a partnership program between the sfa and the federal highway administration. This paper presents the experimental results of the use of silica fume as a cement replacement in proportion to the recycled aggregate concrete. Pdf characteristics of silica fume concrete researchgate. The durability of this type of concrete is superior to conventional concrete. Scms in cement composites are fly ash fa and silica fume sf, that are obtained as the byproducts of the coal industry and the siliconferrosilicon industries, respectively 7,8. An experimental program has been carried out to study the effect of superplasticizer alone and in conjuction with silica fume on some of the properties of fresh and harden of concrete. It results from the reduction of high purity quartz with coal in electric arc furnaces. Download this book pdf price includes vat, unlike print books, digital books are subject to vat. Effect of silica fume and waste marble powder on the mechanical.
Silica fume, a byproduct in the manufacture of ferrosilicon and also of silicon metal, is a very efficient pozzolanic material, though there are some problems associated with its use in concrete. Chemical physical properties of silica fume silica fume. Comparative study of the characteristics of nano silica. Silica fume is one of the popular pozzolanas used in concrete to get imporved properties. Download silica fume for sale, microsilica supplier in china. Properties of both fresh and hardened silica fume concrete are affected significantly compared to normal concrete.
Silica fume will produce a much less permeable and high strength concrete, but it will not produce a concrete with a higher mass per unit volume. The role of the vma and silica fume for the stability and robustness of scc. Influence of silica fume on mechanical and physical. Effects of silica fume and nanosilica on the engineering. Pdf proper introduction of silica fume in concrete improves both the mechanical and durability characteristics of the concrete.
Properties of the fumed silica and silica fume have been shown in. The specific gravity of silica fume is generally in the. Sf and wmp had a substantial impact on water absorption. Experiments indicate that concretes become more cohesive and less prone to segregation in the presence of silica fume, moreover, performance of water demand, setting of. Low price silica fume, microsilica fume supplier in china, henan superior abrasives mainly supply undensifieddensified 85u 85d silica fume, 92u 92d silica fume, 94u 94d silica fume, 96u 96d silica fume, astm c1240,csa a300108,jis and other standards. This paper shows the results of an experimental work on concrete containing different parts of silica fume. Combined effect of polypropylene fiber and silica fume on. The combustion process creates silicon dioxide molecules, which condense to form particles. Characterization of the effect of vma and silica fume on the behavior of scc. Fresh and hardened properties of silica fume concrete is superior to conventional concrete. Effect of silica fume on mechanical properties of concrete. Determining the compressive, flexural and splitting. The compressive strength and splitting strength tests of concrete with different content of sf 0%, 4%, 8% and 12% and of ssp 0%, 10%, 20%, 30% and 40% were carried out, and the test results were analyzed and fitted.
The bulk density uncompacted unit weight of silica fume varies from to 430 kgm3 8 to 27 lbft3. Effect of superplasticizer and silica fume on properties of concrete. Influence of silica fume and polypropylene fiber on. Silica fume and kim media kryton international inc. Department of civil engineering, north eastern regional.
Silica fumes of different types for highperformance finegrained. Silica fume was kindly provided by metalleghe spa, brescia, italy, as an industrial byproduct derived from ferrosilicon and silicon metal alloy processing. Silica fume is an ultrafine material with spherical particles less than 1. Effects of silica fume and fly ash as partial replacement of. Fly ash, slag, silica fume, and natural pozzolans, chapter 3. Fa and sf enhance mainly the longterm strength and durability properties of cement composites owing to their pozzolanic reactions with calcium hydroxide formed during. For instance, it has higher compressive and flexural strength. Therefore, this study focused on the effect of silica fume as industrial waste products and nano silica on geotechnical characteristics and microstructural properties of kaolinite clay as a soft soil with poor strength properties. Experiments indicate that concretes become more cohesive and less prone to segregation in the presence of silica fume, moreover, performance of water demand, setting of time, plastic shrinkage varies respectively from concretes. This study investigated the effect of silica fumesf on mechanical properties of concrete incorporating steel slag powder ssp. Silica fume contains 85% to 98% silicon dioxide and has an average particles. A parametric experimental study has been conducted to investigate the combined effect of polypropylene fiber and silica fume on the mechanical properties compressive strength, splitting tensile strength, and compressive modulus of elasticity of concrete composite containing fly ash. The use of silica fume in concrete has both engineering potential and economic advantage. Trace elements depending upon type of fume amorphous.
Download mechanical properties of self compacting concrete or read online books in pdf, epub, tuebl, and mobi format. Article information, pdf download for influence of silica fume and. Pdf effects of metakaolin and silica fume on properties of. An experimental program has been carried out to study the effect. The overall results showed that there is a potential to utilize silica fume in foamed concrete, as there was a noticeable enhancement of thermal and mechanical properties with the addition of silica fume. The relative density of silica fume is generally in the range of 2.
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