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Gotowa bibliografia na temat „Silica fume”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 6 września 2023

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Artykuły w czasopismach na temat "Silica fume"

Sopa N.R, Yra Maya, Sartika Nisumanti i Denie Chandra. "Pengaruh Penambahan Silica Fume Terhadap Kuat Tekan Beton Fc’25". Publikasi Riset Orientasi Teknik Sipil (Proteksi) 5, nr 1 (21.06.2023): 1–6. http://dx.doi.org/10.26740/proteksi.v5n1.p1-6.

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Beton salah satu bahan utama dalam bidang kontstruksi. Bangunan insfrastruktur seperti gedung, jembatan, irigasi dan jalan semuanya menggunakan beton sebagai bahan utama. Silica fume adalah material pozzolan yang halus, berbentuk butiran, sangat kecil, mengandung senyawa silika dioksida (SiO2) dan alumina (Al2O3) yang berpengaruh dalam proses pengerasan pada beton. Penggunaan silica fume pada campuran beton dapat menghasilkan beton dengan kuat tekan yang tinggi. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan silica fume dengan variasi kadar silica fume sebesar 10% dan 20%. Menggunkan metode eksperimen sesuai standar SNI 03-2834-2000 untuk memperoleh hasil yang akan mengkonfirmasi variasi yang diteliti. Hasil dari penelitian menunjukkan kuat tekan optimum terdapat pada kadar silica fume sebesar 20% dengan kuat tekan beton 27,20 MPa pada umur beton 28 hari, dengan meningkatnya proporsi campuran silica fume kemampuan kerja beton semakin meningkat. Dari hasil penelitian tersebut dapat diketahui semakin tinggi kadar silica fume maka workabilitas beton semakin berkurang, hal ini terjadi karena sifat silica fume yang menyerap air. Kata Kunci: Beton, Silica Fume, Kuat Tekan Beton

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Al-Soudany, Kawther. "Remediation of Clayey Soil Using Silica Fume". MATEC Web of Conferences 162 (2018): 01017. http://dx.doi.org/10.1051/matecconf/201816201017.

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This paper evaluates the use of silica fumes as modification of fine-grained soil in order to alter undesirable properties of the native soil and create new useful soils. Silica fume as well as clay material, are used in changing the engineering properties to be compatible and satisfying this is due to their pozzolanic reactivity. The study aims to investigate the uses of these materials in geotechnical engineering and to improve the properties of soils. Four percentages of silica fumes were used in the present study, which is 0, 3, 5 and 7%. Classification, specific gravity, compaction characteristics, swell and swell pressure, CBR and compressive strength tests had been conducted on the prepared and modified soils. Results clarified that the silica fume increasing leads to decrease the plasticity index and liquid limit. Increasing in silica fume causes an increasing in plastic limit and optimum water contents while the maximum dry unit weight values decrease. The compressive shear strength, California Bearing Ratio (CBR), swell and swell pressure is improved by using silica fume so that silica fume can be considered as a successful material in improving the soil properties.

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Jinnai, H., T. Saeki i S. Nagataki. "Silica Fume". Concrete Journal 52, nr 5 (2014): 399–404. http://dx.doi.org/10.3151/coj.52.399.

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Tarru, Reni Oktaviani. "Studi Penggunaan Silica Fume Sebagai Bahan Pengisi (Filler) Pada Campuran Beton". Journal Dynamic Saint 3, nr 1 (18.03.2018): 472–85. http://dx.doi.org/10.47178/dynamicsaint.v3i1.271.

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Enter an abstract of up to 250 words for all articles. This is a concise summary of the whole paper, not just the conclusions, and is understandable without reference to the rest of the Silica fume merupakan produk sampingan (biproduct) dari suatu proses industri silicon metal. Silica fume mengandung kadar SiO2 yang tinggi dan merupakan bahan sangat halus, berbentuk butiran, sangat kecil, dan biasanya disePbut dengan mikro silika. Silica fume mengandung unsur SiO2 lebih dari 85% dengan demikian silica fume dapat dikategorikan sebagai pozzoland. Terdapat kelebihan tersendiri apabila kita menggunakan silica fume dalam proses pembuatan beton mutu tinggi, kelebihan tersebut antara lain: meningkatkan workabilitas untuk jangka waktu yang lama, meningkatkan stabilitas dan keterpaduan campuran beton segar, Ketahanan beton meningkat drastik, air resapan pada beton banyak berkurang, gas didalam beton banyak berkurang, peningkatan yang besar ketahanan terhadap karbonasi, perembesan klorid dalam beton banyak berkurang, kekuatan awal dan akhir yang tinggi. Penelitian ini dilakukan dengan membandingkan sampel beton yang dibuat dalam kondisi normal dengan sampel beton yang menggunakan silica fume sebagai bahan pengisi (filler) sebesar 5%, 10%, dan 15% dengan metode eksperimental yaitu melakukan pengujian sampel di Laboratorium. Hasil penelitian menunjukkan kuat tekan beton normal pada umur 28 hari yaitu 37,10 Mpa, untuk penambahan 5% silica fume f’c = 40,39 Mpa, dan untuk penambahan 10% silica fume f’c= 41,88 Mpa, penambahan 15% silica fume f’c = 43,62 Mpa.

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Sutriono, Bantot, Retno Trimurtiningrum i Aditya Rizkiardi. "Pengaruh Silica Fume sebagai Subtitusi Semen terhadap Nilai Resapan dan Kuat Tekan Mortar (Hal. 12-21)". RekaRacana: Jurnal Teknil Sipil 4, nr 4 (29.11.2018): 12. http://dx.doi.org/10.26760/rekaracana.v4i4.12.

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ABSTRAKBeton dan mortar banyak digunakan sebagai bahan konstruksi di seluruh dunia. Meningkatnya permintaan beton dan mortar juga meningkatkan permintaan semen di pasar yang berdampak negatif bagi lingkungan. Industri semen menghasilkan sekitar 6 hingga 7 persen dari seluruh CO2 di seluruh dunia. Oleh karena itu, para peneliti mencoba mengembangkan gagasan tentangbeton ramah lingkungan, dengan mengurangi penggunaan semen dengan menggunakan bahan alternatif seperti silica fume. Silica fume adalah bahan pozzolan yang kaya akan silika dan dapat bereaksi kimia dengan kalsium hidroksida, membentuk gel kalsium silikat (CSH) pada beton. Tujuan dari penelitian ini adalah untuk menyelidiki pengaruh silica fume sebagai pengganti parsial semen terhadap nilai resapan dan kekuatan tekan mortar. Persentase silica fume bervariasi 0%, 5%, 10%, 12% dan 15%. Hasil pengujian menunjukkan nilai resapan minimum adalah 3,276% diperoleh campuran dengan 15% silica fume dan kuat tekan maksimum 312,574 kg/cm2 diperoleh campuran dengan 8% silica fume.Kata kunci: silica fume, nilai resapan, kuat tekan, mortar ABSTRACTConcrete and mortar are widely used as contruction materials. The increasing demand of concrete and mortar also increase the demand of cement in the market which has negative impact for environment. The cement industry produced for approximately 6 to 7 percent of all CO2 worldwide. Therefore, the researches try to develop the idea of green concrete with reducing the utilize of cement with using the alternative materials such as silica fume. Silica fume is a pozzolanic material that contain rich of silica and has chemical reaction with calcium hydroxide forming calcium silicate hydrate (C-S-H) gel in concrete.The aimed of this research is to investigate the influence of silica fume as partial replacement of cement on absoption and compressive strength of mortar.The percentage of silica fume were varied from 0%, 5%, 10%, 12% and 15%. The test result showed that the minimum absorption value is 3.276% obtain from the mixture with 15% of silica fume and the maximum compressive strength is 312.574 kg/cm2 obtain from the mixture with 8% of silica fume.Keywords: Silica fume, absorption, compressive strength, mortar

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Muhammed, N., L. Shihab i S. Sakin. "Ultimate Load of Different Types of Reinforced Self-Compacting Concrete Columns Attacked by Sulphate". Civil Engineering Journal 8, nr 10 (1.10.2022): 2069–83. http://dx.doi.org/10.28991/cej-2022-08-10-04.

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In this study, the effects of the partial immersion of sulphate attack on the ultimate load capacity of reinforced self-compacting concrete (SCC) columns and the sulphate attack resistance improvement using silica fume, steel fibres, and the combination of silica fume and steel fibres were assessed. Twelve short circular self-compacting reinforced concrete columns (0.150 m in diameter and 0.7 m long) were cast and divided into groups according to (1) the three acid-attack groups. The first group was tested without an acid attack (control). The second group was tested after 1 month of exposure to 2% acid. The final group was tested after 1 month of exposure to 4% acid and was then (2) subdivided according to the type of casted concrete. The first group was cast with SCC. The second group was cast with SCC and silica fume (0.1% of the cement weight). The third group was cast with SCC and 1% volume fraction steel fibres. The fourth group was cast with SCC silica fume and 1% volume fraction steel fibre. All columns were tested by axial loading. The ultimate load was increased by 42% with silica fume, 190% with steel fibres, and 238% with silica fume and steel fibres. Exposure to 2% and 4% acid reduced the ultimate loads of the columns casted with SCC by 23% and 47%, the columns casted with SCC and silica fume by 34% and 37%, the columns casted with SCC and steel fibres by 69% and 78%, and the columns casted with SCC, silica fume, and steel fibres by 72% and 79%, respectively. Based on the results, using silica fumes improved sulphate resistance, and using steel fibres enhanced sulphate resistance at an acceptable ratio. Furthermore, the mix with silica fume and steel fibres improved sulphate resistance at a good ratio. We encountered several problems in this study. The partial immersion of sulphate affected the strain in both concrete and steel. Future studies using different immersion ratios are recommended. Doi: 10.28991/CEJ-2022-08-10-04 Full Text: PDF

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Şenol, Ahmet, i Arzu Guner. "Use of Silica Fume, Bentonite, and Waste Tire Rubber as Impermeable Layer Construction Materials". Advances in Civil Engineering 2023 (17.01.2023): 1–12. http://dx.doi.org/10.1155/2023/7301343.

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To avoid the potential risks associated with all hazardous wastes, it is important that containment methods are intended to prevent the migration of liquid hazardous wastes or leaks containing hazardous components. Therefore, impermeable barriers were used to prevent contamination. In this study, geotechnical tests were performed on samples by mixing rubber and bentonite with silica fume at certain percentages. The aim of the experimental studies is to evaluate the applicability of certain proportions of silica fume, rubber, and bentonite mixtures as impermeable liner material. Possible cracks in bentonite during drying are reduced by the use of silica fume. Absorption of dynamic effects that may occur on the impermeable barrier layer is achieved by adding waste rubber in a uniform size. Several geotechnical tests were performed to examine the mixed rubber and bentonite with silica fumes. Looking at the results of the whole that mixed rubber and bentonite with silica fume yielded usable results and a blend for construction of a liner.

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Lin, Dong, i Zi Yun Wen. "Research on the Efficient Application of Silica Fume in High-Tech Cement-Based Materials". Advanced Materials Research 374-377 (październik 2011): 1537–40. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.1537.

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The comparison experiments are carried out at different silica fume dosage between the silica fume with pre-treatment and the silica fume without pre-treatment. The results show that the pre-treatment of silica fume improved the strength greatly and the silica fume dosage corresponding to the strength peak somewhat moved forward from 0.20 for the cement-based materials with pre-treatment of silica fume to 0.21 for the cement-based materials without pre-treatment of silica fume. The particles distribution experiment results indicate that after the pre-treatment of silica fume, the average particle diameter of silica fume reduced from 2.865μｍto 0.151μｍ. Based on Aim-Goff model, it is concluded that the increase in the compressive strength and flextural strength of cement-based materials with pre-treatment of silica fume, are attributed to the dispersion of silica fume agglomeration and the increase in the packing density of the cement-based materials.

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Shao, Di, Jianzhi Diao, Lijie Wang i Long Li. "Effect of surface modification on the compressive properties of silica fume/polyurethane composites". Journal of Polymer Engineering 36, nr 8 (1.10.2016): 847–52. http://dx.doi.org/10.1515/polyeng-2015-0475.

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Abstract Silica fume was modified by a silane coupling agent (KH-550). The modified silica fume was further investigated to reinforce polyurethane (PU) composites. Unmodified and modified silica fume reinforced PU composites were prepared. Through the comparisons of Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) of unmodified and modified silica fume, the agglomerations of silica fume particles were effectively prevented as KH-550 was grafted. The compressive strength of the modified silica fume/PU composites was largely improved, because KH-550 could react with both silica fume and PU. Meanwhile, modified silica fume turned from hydrophilic to hydrophobic; a better dispersion was realized in the PU elastomers compared to the unmodified silica fume. The reinforcement effects were evaluated based on the results of a universal test machine in comparison with unmodified silica fume/PU composites.

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Jin, Zu Quan, Peng Zhang, Tie Jun Zhao i Bao Rong Hou. "Study on Ultra-Strength Mortar Prepared with Mineral Admixture". Materials Science Forum 675-677 (luty 2011): 1073–76. http://dx.doi.org/10.4028/www.scientific.net/msf.675-677.1073.

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In this paper, preparation, property study of ultra-strength mortars with mineral admixture and clear river sand was carried out. The mineral admixture include fly ash, ultra-fine GGBS and silica fume. The experimental results show that the compressive strength of mortar improves with increasing amount of silica fume or ultra-fine GGBS. When the content of silica fume or ultra-fine GGBS is 30~35%, the compressive strength and flexural strength of mortar in curing age of 7 days are 100 MPa and 20MPa, respectively. But strength of mortar decreases with the increase replacement rate of fly ash. When the mortar mixes with combined of silica fume and ultra-fine GGBS, the optimum proportion of siliaca fume to ultra-fine GGBS is 2:3. And the compressive strength of mortar in curing age of 7 days is 75~100MPa when the mixed mineral admixture is 40~60%. The compressive strength of mortar is about 90MPa as it mix 60% of cement, 15% of silica fume, 15% of GGBS and 10% of fly ash. Moreover, the ultra strength mortar refines its pore structure and its capiliary pore (≥100nm) amount reduces by 78% compared to ordinary mortar.

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Rozprawy doktorskie na temat "Silica fume"

Brew, Daniel Robert Mitchell. "Impact of silica fume on cement performance". Thesis, University of Aberdeen, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369734.

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Organic ion exchanger resin beads are widely used in nuclear waste technology for pond water cleanup. They accumulate radioactive Cs and Sr in service. For disposal, the beads are encapsulated in cement but their stabilisation in cement has been difficult to achieve. The ion exchangers uptake calcium and inbibe water, as a result of which they swell, cracking the cement. Nuclear Electric had previously commissioned work on non-swelling formulations. These consist of mixtures of sulfate-resisting Portland cement, calcium hydroxide and silica fume. However, concerns have been expressed about cement durability in contact with brines. This thesis had as part of its objectives, (i) determination of the probable stability of the non-swelling matrix in MgSO₄ brines and (ii) the corrosion potential of stainless steel in contact with the non-swelling cement. In addition, synthesis, characterisation work was performed on the reaction product of objective (i), M-S-H gel. Its alkali sorption capacity was determined as a function of both Mg/Si ratio and alkali concentration to assess its immobilisation potential.

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Al-Eesa, Azmi Sami Said. "Silica fume concrete in hot and temperate environments". Thesis, Loughborough University, 1990. https://dspace.lboro.ac.uk/2134/6829.

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his investigation deals with the influence of hot and temperate curing environments on the hardened properties of concrete and mortar mixes. Condensed silica fume was blended with OPC as a potential alternative cementitious material to plain OPC for use in the hot Iraqi climate, in an attempt to find a cement combination that would overcome some of the durability problems experienced when using a plain OPC concrete in such an environment. Throughout the investigation two curing environments were used: the first simulating the UK temperate climate and the second simulating the hot Iraqi climate. Temperature and humidity were varied to simulate day and night time. The first stage of the experimental study was the development of a mix design method capable of producing an OPC-CSF cement concrete of a medium workability and a specific 28-days compressive strength ranging between 25 to 55 MPa, both with and without superplasticizer. Three grades of concrete strength were chosen (25,40 and 55 MPa) and the effect of four cement replacement levels (5,10,15 and 20%) of silica fume on concrete compressive strength was assessed. Test results showed that CSF was relatively more effective in lean mixes than in rich ones. Compressive strength of CSF concrete increased with increasing CSF percentages for both normal and superplasticized mixes up to an optimum levels of 10-15% and 15-20%, respectively. The amount of OPC (kg/m`3) necessary to bring a change in compressive strength of 1MPa was also determined and the theoritical blend proportions of OPC-CSF necessary to produce 28-day compressive strength equivalent to the plain OPC mixes were determined from the produced data above. The theoretical blend proportions were examined experimentally and the data were used to establish the relationship between strength and water/cementitious ratio for the blend mixes with and, without superplasticizer. Results showed that this basic relationship had changed quantitatively but not qualitatively when CSF was used. A cost study using current OPC and CSF material costs -was performed in an attempt to determine'the- most economic blend proportions. A total of eleven different concrete -mixes were selected to study the effect of curing environment (hot and temperate), initial curing time (0,1,3 and`-7 days) and curing method (water and polythene sheeting) on the compressive strength, permeability and absorption properties of the CSF concretes. Tests were carried out at 3,7, '14, 28,56,90 and 180 days of age. In addition five different mortar, mixes were used to examine the effect of curing environment (temperate and hot) an the *permeability, pore size distribution and durability to magnesium sulphate attack. Test results showed that hot Iraqi curing environment was favourable to the early-age strength, absorption and permeability of plain OPC mixes. However, - the later-age properties were significantly lower than those obtained for concretes cured in a temperate UK environment. For plain OPC mixes a critical curing period of 3 days was found under both temperate and hot environment. For the CSF blend mixes critical curing periods for the temperate and hot environment were found to be 3 and 1 day respectively. Results also reveal the importance of curing specimens immediately after casting for one day. Research work has also confirmed the superiority of water curing over polythene sheeting in a temperate environment for the rich plain OPC and CSF mixes. However, there was no significant difference between water and polythene for lean mixes. The reduction in , permeability and absorption properties of CSF mixes cured in a both temperate and hot environments is thought to be due to the changes in the pore structure brought about by the use of silica fume. Combining CSF with OPC was found to increase the percentages and volume of fine pores at the expense-of coarse pores. This effect may be described as a "refining" effect. Finally, the performance of CSF mortar mixes cured in a temperate and hot environment and their resistance to magnesium sulphate attack was significantly better than the plain OPC ones.

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Pun, Pierre Che Ho. "Influence of silica fume on chloride resistance of concrete". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq28837.pdf.

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Kashi, Mohsen Gholam-Reza. "Freeze-thaw durability of high strength silica fume concrete". Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/53942.

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Specimens from 27 batches of concrete with water to cementitious (cement plus silica fume) ratio of 0.25 to 0.32, with and without entrained air, were tested for freeze-thaw durability in accordance with ASTM C666, procedure A (freezing and thawing in water). In addition, another set of similar specimens were moist cured for 28 days instead of 14 days and tested in accordance with ASTM C666 , Procedure A to determine the effect of curing time on the freeze-thaw durability of high strength concrete. Results show that non air-entrained high strength concrete with water cementitious ratio of less than 0.30, regardless of the length of curing time, is frost resistant. Non-air-entrained concrete with water-cement ratio of 0.32 is also durable if silica fume is not used.
Ph. D.

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Shehata, Medhat H. "The effects of fly ash and silica fume on alkali-silica reaction in concrete". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ58597.pdf.

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El-Khatib, Jamal M. "Durability related properties of PFA, slag and silica fume concrete". Thesis, University of Aberdeen, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315418.

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Concrete has the largest production of all man-made materials. Compared with other construction materials, it possesses many advantages including low cost, general availability of raw materials, low energy requirement and utilization under different environmental conditions. Therefore, concrete will continue to be the dominant construction material in the foreseeable future. However, durability of concrete and reinfored concrete structures are still of worldwide concern, so producing a good quality concrete which impedes the ingress of harmful substances into it is of paramount importance. Cement replacement materials have been introduced into concrete mixtures for the purpose of improving the durability performance. Hence, the aim of the present investigation is to study the durability of concrete with and without cement replacement materials under various initial curing conditions. In this thesis various concrete mixes with and without cement replacement materials were considered. The cement replacement materials were, pulverised fuel ash, condensed silica fume, and ground granulated blast furnace slag. Superplasticiser was added to the majority of the mixes considered and air entraining agent to some of the mixes. Various curing regimes were employed which comprised hot dry curing to simulate concrete in the hot arid areas in the world and curing at normal temperature. Curing involved air curing, membrane curing and moist curing for fourteen days followed by air curing. A number of tests were conducted at either one particular age or at various ages. These included tests on porosity and pore structure of pastes obtained by mercury intrusion porosimetry technique, water absorption which covers the water absorption of concrete obtained by shallow immersion and the water absorbed by capillary action when the concrete surface is in contact with water, sulphate resistance of concrete which is performed by immersing the concrete specimens in sulphate solution, and monitoring the change in length at various periods of immersion, chloride penetration profiles of concrete at various ages of exposure. In addition to these tests on durability related properties, tests on compressive strength were also performed. Throughout the study a correlation between pore structure and durability related properties is investigated. A comprehensive compilation of chloride penetration data is made and an empirical expression is derived for the prediction of long term diffusion coefficients. At the end of the investigation, limitations of the present study, conclusions and suggestions for future research are made.

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Tank, Suresh Bhagwanji. "The use of condensed silica fume in Portland cement grouts". Thesis, University College London (University of London), 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307794.

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Claisse, Peter Arnold. "The properties and performance of high strength silica fume concrete". Thesis, University of Leeds, 1988. http://etheses.whiterose.ac.uk/3256/.

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Silicafume (SF) has been used as a partial replacement for cement in concrete and experiments have been carried out to measure the durability of the mixes. The SF mixes were made with 20% SF replacement of cement and waterlcement (wlc) ratios of 0.3 and 0.46. Three different curing conditions were used to simulate different site conditions and tests were carried out at 3,28 and 90 days after casting. The following properties were measuredfor the two SF mixes and the two control (OPC) mixes for each of the ages and curing conditions: corrosion rate of embedded steel by linear polarisation, electrical resistivity, carbonation depth, water vapour permeability, chloride permeability, oxygen permeability and porosity from helium and mercury intrusion. Samples were also investigated by thermogravimetric analysis. The resulting data matrix was analysed by using the method of analysis of variance to quantify the effect of the SF on the properties tested and their sensitivity to age and curing. It was also analysed by multiple regression to identify major effects of one property on another. It was concluded that SF will reduce the corrosion rate and that the major contributing factor is the substantial increase in resistivity that the SF causes. This increase in resistivity was found to be highly sensitive to cold curing in the short term but this effect was not permanent. The cause of the increase in resistivity is believed to be the depletion of calcium hydroxide which is caused by the pozzolanic activity of the SF. The analysis also indicated that the SF reduces the porosity in the .01-.15)1m size range and that this has a major influence on the durability.

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Gans, Ira. "The production of ultrafine silica particles through a transferred arc plasma process /". Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65464.

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Boddy, Andrea M. "The effect of product form and silica content of silica fume on its ability to control alkali-silica reaction". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0028/MQ50329.pdf.

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Książki na temat "Silica fume"

Rashad, Alaa M. Silica Fume in Geopolymers. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33219-7.

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M, Malhotra V., red. Condensed silica fume in concrete. Boca Raton, Fla: CRC Press, 1987.

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Whiting, D. Silica fume concrete for bridge decks. Washington, D.C: National Academy Press, 1998.

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V, Lisichkin G., red. Modifit͡s︡irovannye kremnezemy v sorbt͡s︡ii, katalize i khromatografii. Moskva: "Khimii͡a︡", 1986.

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Pun, Pierre Che Ho. Influence of silica fume on chloride resistance of concrete. Ottawa: National Library of Canada, 1997.

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Douglas, E. Compilation of abstracts of papers from recent international conferences and symposia on condensed silica fume in concrete. [Ottawa]: Energy, Mines, and Resources Canada, Canada Centre for Mineral and Energy Technology, 1988.

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Boddy, Andrea M. The effect of product form and silica content of silica fume on its ability to control alkali-silica reaction. Ottawa: National Library of Canada, 2000.

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Elias, Wiliam Shila. Effects of silica fume on corrosion resistance of reinforced concrete. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1991.

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Smith, Amanda J. Factors affecting the sulphate resistance of mortars containing slag and silica fume. Ottawa: National Library of Canada, 2002.

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Pashutinski, Igor. Mechanisms of improved sulphate resistance of concrete containing slag or silica fume. Ottawa: National Library of Canada, 1990.

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Części książek na temat "Silica fume"

Lewis, Robert C. "Silica Fume". W RILEM State-of-the-Art Reports, 99–121. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70606-1_3.

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Siddique, Rafat, i Mohammad Iqbal Khan. "Silica Fume". W Supplementary Cementing Materials, 67–119. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17866-5_2.

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Ramezanianpour, Ali Akbar. "Silica Fume". W Springer Geochemistry/Mineralogy, 193–223. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36721-2_4.

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Rashad, Alaa M. "Silica Fume as a Part of Precursor/An Additive". W Silica Fume in Geopolymers, 9–83. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33219-7_2.

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Rashad, Alaa M. "General Perspective and Suggestions for Upcoming Work". W Silica Fume in Geopolymers, 103–9. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33219-7_5.

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Rashad, Alaa M. "Silica Fume as an Activator Component". W Silica Fume in Geopolymers, 85–93. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33219-7_3.

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Rashad, Alaa M. "Introduction". W Silica Fume in Geopolymers, 1–8. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33219-7_1.

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Rashad, Alaa M. "Silica Fume as a Foaming Agent". W Silica Fume in Geopolymers, 95–102. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33219-7_4.

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Rashad, Alaa M. "General Remarks". W Silica Fume in Geopolymers, 111–13. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-33219-7_6.

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Harbec, David, Hanane Bahri, Arezki Tagnit-Hamou i François Gitzhofer. "New Silica Fume from Recycled Glass". W Nanotechnology in Construction, 407–14. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17088-6_53.

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Streszczenia konferencji na temat "Silica fume"

"Wet-Mix silica Fume Shotcrete: Effect of Silica Fume Form". W "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/1227.

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"Permeabilities of Silica Fume Concrete". W SP-108: Permeability of Concrete. American Concrete Institute, 1988. http://dx.doi.org/10.14359/2167.

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"Studies on Ferrocement Containing Silica Fume". W "SP-153: Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete Proceedings Fifth International Conference Milwauk". American Concrete Institute, 1995. http://dx.doi.org/10.14359/1101.

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"Improving Concrete Quality with Silica Fume". W SP-104: Lewis H. Tuthill International Symposium: Concrete and Concrete Construction. American Concrete Institute, 1987. http://dx.doi.org/10.14359/1630.

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Jamali, Masood, i Sanjeev Gupta. "Utilization of silica fume with fly ash and properties of Portland cement-silica fume-fly ash-concrete". W ADVANCEMENTS IN CIVIL ENGINEERING: COSMEC-2021. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0119884.

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Chawakitchareon, Petchporn, i Natthapol Sresthaolarn. "Replacement of Silica Fume using Silica Waste for Mortar Production". W 14th Asia Pacific Confederation of Chemical Engineering Congress. Singapore: Research Publishing Services, 2012. http://dx.doi.org/10.3850/978-981-07-1445-1_828.

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"Study of Concrete Containing Silica Fume and Activated Amorphous Silica". W "SP-145: Durability of Concrete -- Proceedings Third CANMET - ACI International Conference, Nice, France 1994". American Concrete Institute, 1994. http://dx.doi.org/10.14359/4419.

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Al-Rifaie, Wail, Abdalmjeed Alawaneh, Mohammed Al-Bajawi i Waleed Ahmed. "Effect of Nano Silica on Compressive Strength of Concrete". W ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87799.

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In the present work, the use of nano silica fume in developing a compressive strength of concrete that can lead to improvement in concrete construction is carried out in the present work. One of the parameters considered is a number of curing days for measuring the compressive strength. The measured results demonstrate the increase in compressive. To achieve our goals, concrete cubes were cast and tested for compressive strength, all concrete sample has the same mixing ratio and sub-classified to standard, and Silica fume added by weight of cement (5%, 10%, 15%, 20% and 30%). The results show that the recommended addition was 15% of Silica fumes for optimum compressive strength that reaches 74.8 MPa.

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"Ensuring High Quality Silica Fume Concrete Overlays". W "SP-153: Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete Proceedings Fifth International Conference Milwauk". American Concrete Institute, 1995. http://dx.doi.org/10.14359/1092.

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"Longterm Strength Development of Silica Fume Concrete". W "SP-132: Fly Ash, Silica Fume, Slag, and Natural Pozzolans and Natural Pozzolans in Concrete - Proceedings Fourth Interna". American Concrete Institute, 1992. http://dx.doi.org/10.14359/2383.

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Raporty organizacyjne na temat "Silica fume"

Burroughs, Jedadiah, Jason Weiss i John Haddock. Influence of high volumes of silica fume on the rheological behavior of oil well cement pastes. Engineer Research and Development Center (U.S.), lipiec 2021. http://dx.doi.org/10.21079/11681/41288.

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Specialized classes of concrete, such as ultra-high-performance concrete, use volumes of silica fume in concrete that are higher than those in conventional concrete, resulting in increased water demand and mixing difficulty. This study considered the effects of eight different silica fumes in three dosages (10%, 20%, 30%) with three w/b (0.20, 0.30, 0.45) on rheological behavior as characterized by the Herschel-Bulkley model. Results indicated that the specific source of silica fume used, in addition to dosage and w/b, had a significant effect on the rheological behavior. As such, all silica fumes cannot be treated as equivalent or be directly substituted one for another without modification of the mixture proportion. The rheology of cement pastes is significantly affected by the physical properties of silica fume more so than any chemical effects.

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Stutzman, Paul E., i James R. Clifton. Microstructural features of some low watersolids, silica fume mortars cured at different temperatures. Gaithersburg, MD: National Institute of Standards and Technology, 1992. http://dx.doi.org/10.6028/nist.ir.4790.

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Douglas, E., i V. M. Malhotra. Compilation of-abstracts of papers from recent international conferences and symposia on condensed silica fume in concrete. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/305078.

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Hartell, Julie, Matthew O’Reilly i Hang Zeng. Measuring Transport Properties of Portland Cement Concrete Using Electrical Resistivity. Illinois Center for Transportation, sierpień 2023. http://dx.doi.org/10.36501/0197-9191/23-012.

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Although classification tables based on susceptibility to chloride ion permeability are recommended in AASHTO T 358, the classification levels with respect to durability parameters may or may not be adequate. Of interest for concrete pavement performance, this study verifies the recommended classification levels against standard durability testing such as corrosion, salt scaling, and freeze-thaw. The researchers conducted corrosion, salt scaling, and freeze-thaw durability tests in parallel with electrical surface resistivity testing to compare performance classifications for each method. Twenty-four mixture designs were evaluated. The designs vary in water-to-cementitious material ratio (0.4, 0.45, and 0.5 w/cm ratio), supplementary cementitious material type (100% ordinary Portland cement, 20% Class C fly ash, 40% Grade 100 slag cement, and 8% silica fume replacements), and air content (air entrained and non-air entrained). The results of the experimental study indicate that there is no clear relationship between concrete electrical conductivity and durability performance based on standard methods of testing. It may not be appropriate for the determination of durability performance of a concrete mixture for concrete pavement construction. However, the test method does present advantages, as mixtures of similar composition and design can yield the same results over time under standardized curing. Here, resistivity-time curves could be a useful tool as part of a quality control and quality assurance program to ensure consistency in concrete delivery during construction.

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He, Rui, Na (Luna) Lu i Jan Olek. Development of In-Situ Sensing Method for the Monitoring of Water-Cement (w/c) Values and the Effectiveness of Curing Concrete. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317377.

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As the most widely used construction material, concrete is very durable and can provide long service life without extensive maintenance. The strength and durability of concrete are primarily influenced by the initial water-cement ratio value (w/c), and the curing condition during the hardening process also influences its performance. The w/c value is defined as the total mass of free water that can be consumed by hydration divided by the total mass of cement and any additional pozzolanic material such as fly ash, slag, silica fume. Once placed, field concrete pavements are routinely cured with liquid membrane-forming compounds. For laboratory study, concrete samples are usually cured in saturated lime water or a curing room with a relative humidity (RH) value higher than 95%. Thus, the effectiveness of curing compounds for field concrete needs to be studied. In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for In this study, the dielectric constant value of plastic concrete was measured by ground penetrating radar (GPR). The w/c value of the plastic concrete was calculated by a mathematical model from the measured dielectric constant value. The calculated w/c value was compared with the microwave oven drying measurement determined result in AASHTO T318. A modified coarse aggregate correction factor was proposed and applied in microwave oven drying measurement to determine the w/c value of plastic concrete in AASHTO T318. The effectiveness of curing compound was evaluated by field concrete slabs by GPR measurement. It was found that GPR can be a promising NDT method for w/c determination of plastic concrete and curing effectiveness evaluation method for hardened concrete.

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Khan, Saad A., Peter S. Fedkiw i Gregory L. Baker. Composite polymer electrolytes using functionalized fumed silica: synthesis, rheology and electrochemistry. Office of Scientific and Technical Information (OSTI), maj 2002. http://dx.doi.org/10.2172/804908.

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Trautschold, Olivia Carol. Dynamic Moisture Sorption and Desorption in Fumed Silica-filled Silicone Foam. Office of Scientific and Technical Information (OSTI), wrzesień 2016. http://dx.doi.org/10.2172/1321702.

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Khan, Saad A., Peter S. Fedkiw i Gregory L. Baker. Composite polymer electrolytes using fumed silica fillers: synthesis, rheology and electrochemistry. Office of Scientific and Technical Information (OSTI), czerwiec 1999. http://dx.doi.org/10.2172/761809.

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Zarr, Robert R., Thomas A. Somers i Donn F. Ebberts. Room-temperature thermal conductivity of fumed-silica insulation for a Standard Reference Material. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nist.ir.88-3847.

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Smith, David R., i Jerome G. Hust. Microporous fumed-silica insulation board as a candidate Standard Reference Material of thermal resistance. Gaithersburg, MD: National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nist.ir.88-3901.

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