Relevant bibliographies by topics / Fumees de silice condensees

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  2. Dissertations / Theses
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Academic literature on the topic 'Fumees de silice condensees'

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Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Fumees de silice condensees"

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Sabir, B. B. "High-strength condensed silica fume concrete." Magazine of Concrete Research 47, no. 172 (September 1995): 219–26. http://dx.doi.org/10.1680/macr.1995.47.172.219.

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YONEKURA, Asuo. "Use of condensed silica fume in concrete." Journal of the Society of Powder Technology, Japan 26, no. 7 (1989): 512–19. http://dx.doi.org/10.4164/sptj.26.512.

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Kwan, A. KH. "Use of condensed silica fume for making high-strength, self-consolidating concrete." Canadian Journal of Civil Engineering 27, no. 4 (August 1, 2000): 620–27. http://dx.doi.org/10.1139/l99-091.

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A high concrete strength can be achieved by lowering the water/binder ratio and a high workability by adding a higher dosage of superplasticizer. However, a high-performance concrete with both high strength and high workability cannot be produced by just these means because lowering the water/binder ratio leads to lower workability and there is a limit to the increase in workability that can be attained by adding superplasticizer. To produce a high-strength, high-workability concrete, the concrete strength needs to be increased without lowering the water/binder ratio. This can be done by adding condensed silica fume. In this study, a series of trial mixing aimed at developing high-strength, self-consolidating concrete (mean cube strength >80 MPa and needs no compaction for consolidation) was carried out. Several mixes suitable for making such high-performance concrete have been developed and it was found that the addition of condensed silica fume may, under favourable conditions, increase not only the strength but also the workability of the concrete mix. Based on the trial mix results, charts for the design of high-strength, high-workability concrete mixes made of the studied constituents are presented.Key words: condensed silica fume, high-strength concrete, self-consolidating concrete.
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Majling, Jan, Peter Znasik, Dinesh Agrawal, Jiping Cheng, and Rustum Roy. "Conventional and microwave sintering of condensed silica fume." Journal of Materials Research 10, no. 10 (October 1995): 2411–14. http://dx.doi.org/10.1557/jmr.1995.2411.

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Condensed silica fume, a by-product from the production of silicon alloys, was sintered by (i) conventional heating in a dilatometric furnace, both at constant heating rate and isothermal heating, and (ii) by the microwave heating. The dense products with relative density up to 95% of theoretical can be obtained only by short runs at high heating rates, preferentially accomplished by the microwave treatment. Prolonged heating leads to the devitrification of the original glassy phase to cristobalite, accompanied by an arrest of densification.
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Alexander, M. G., and B. J. Magee. "Durability performance of concrete containing condensed silica fume." Cement and Concrete Research 29, no. 6 (June 1999): 917–22. http://dx.doi.org/10.1016/s0008-8846(99)00064-2.

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Ng, P. L., W. W. S. Fung, J. J. Chen, and A. K. H. Kwan. "Adiabatic Temperature Rise of Condensed Silica Fume (CSF) Concrete." Advanced Materials Research 261-263 (May 2011): 788–95. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.788.

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Condensed silica fume (CSF) is often added into concrete mixes to enhance the properties of concrete. However, the effect of CSF on the heat evolution and temperature rise of concrete is not clearly known. Test results in the literature are insufficient and sometimes contradictory to enable any conclusion to be drawn regarding the role of CSF in heat generation behaviour of concrete. Moreover, since the chemical reactions of cement and CSF both involve water and hence cement and CSF are competing with each other in reacting with water, the water to binder (W/B) ratio may affect the temperature rise characteristics of concrete. This paper reports an experimental study of adiabatic temperature rise of CSF concrete conducted at The University of Hong Kong. Five concrete mixes without CSF and 10 concrete mixes with CSF dosages at 5% and 10% were tested with the recently developed semi-adiabatic curing test method. The adiabatic temperature rise was obtained by applying heat loss compensation to the test results. It was found that the addition of CSF could suppress the adiabatic temperature rise of concrete. At the same time, the strength of concrete could be enhanced. Based on the experimental results, prediction formula and design chart of adiabatic temperature rise of CSF concrete were developed.
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Slanička, Štefan. "The influence of condensed silica fume on the concrete strength." Cement and Concrete Research 21, no. 4 (July 1991): 462–70. http://dx.doi.org/10.1016/0008-8846(91)90094-x.

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Chaudhary, Satish Kumar, and Ajay Kumar Sinha. "Effect of Silica Fume on Permeability and Microstructure of High Strength Concrete." Civil Engineering Journal 6, no. 9 (September 1, 2020): 1697–703. http://dx.doi.org/10.28991/cej-2020-03091575.

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The important concrete structure in the vicinity of industry, thermal power plant suffers deterioration by the acid rain cause due to combination of CO2, SOx and NOx with rain water. A combined attack that is from acid as well as sulphate can be observed under impact of sulphuric acid. It attacks on Calcium hydroxide and form Calcium sulphate, which can be leached out easily and make Interfacial Transition Zone (ITZ) poor. The water retaining structure such as dam, weir should be impermeable and that can be achieved by binary cementitious blends, using Silica fume (SF). Silica fume a by product of silicon industry, proves very effective in improving the microstructure of concrete due to their finer particle size, approximately 100 times finer than cement particles. The SEM image of binary blended high strength concrete (HSC) with Silica fume shows the condensed packing of cement hydration product and a dense microstructure as compare to control mix. The water permeability test result reveals that there is about 87 percent reduction in the coefficient of permeability achieved by inclusion of 10% Silica fume (SF) by weight of cement. Rapid chloride penetration test (RCPT) has been performed to investigate the ingress of chloride ions into the concrete. There was significant reduction in chloride ions penetration recorded due to SF inclusion.
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Venkateshwaran, A., and K. Nandhini. "Study on Steel Fibre Reinforced Self Compacting Concrete." Asian Journal of Engineering and Applied Technology 7, no. 1 (March 5, 2018): 11–15. http://dx.doi.org/10.51983/ajeat-2018.7.1.871.

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Self Compacting Concrete (SCC) consists of a higher amount of fine content and admixtures, thus eliminating the time for compaction and labour cost. Micro silica is a by-product of the industrial manufacture of ferrosilicon and metallic silicon that is been made in high-temperature electric arc furnace. The ferrosilicon is drawn from 2000°C furnace, thus after when it cools down, the particles are condensed and are trapped in huge cloth bags. The condensed fume is processed by removing impurities and thus micro silica is being formed. Micro silica, as a waste by-product, being used for land filling, instead it can be used as an additive to concrete. The overall weight of the concrete increases up to 15 percent, thus increasing the unit weight of concrete. In addition, nano silica and steel fibres have been used to improve the strength and durability of concrete. Addition of silica to a concrete mix alters the cement paste structure. The resulting paste contains more of the calcium-silicate hydrates and less of the easily soluble calcium hydroxides. Due to its smaller size particle distribution, they disperse among and separate the cement particles. In the present study, different mix ratio using micro silica, nano silica and steel fibres has been prepared to study the fresh and hardened properties of SCC respectively.
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Fournier, B., and Marc-André Bérubé. "Évaluation du potentiel de réactivité alcaline des granulats à béton produits dans les Basses-Terres du Saint-Laurent du Québec (Canada)." Canadian Journal of Civil Engineering 18, no. 2 (April 1, 1991): 282–96. http://dx.doi.org/10.1139/l91-033.

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Seventy-one samples of aggregates representative of the various sedimentary rock types exploited in the St. Lawrence Lowlands were submitted to standard and experimental laboratory tests to evaluate their potential alkali-reactivity in concrete. Among these, only the Trenton and Black River limestones with more than 6% insoluble residues produced excessive expansion in the concrete prism test, the most reliable method in assessing the alkali-reactivity potential of concrete aggregates. Expansion values of 0.1 and 0.15%, obtained respectively after 14 days in the accelerated mortar bar test (1 M NaOH at 80 °C) and 5 h of autoclave curing (0.17 MPa at 130 °C and 100% relative humidity), can only be used as acceptance limits, since nonexpansive aggregates (as per the concrete prism test) from the Black River, Chazy and Beekmantown Groups induced excessive expansion in these tests. Limiting the reactive alkali content of the concrete mix to 3 kg/m3 or using cements containing between 5 and 10% of condensed silica fume can reduce the risks of deleterious reactions associated with the siliceous limestone aggregates produced in the St. Lawrence Lowlands. Key words: concrete, aggregates, alkali–aggregate reaction, accelerated test methods, preventive measures, condensed silica fume.
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Dissertations / Theses on the topic "Fumees de silice condensees"

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Oudjit, Mohamed Nadjib. "Reactivite des fumees de silice condensees en presence de chaux ou de ciment portland." Toulouse, INSA, 1986. http://www.theses.fr/1986ISAT0001.

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Etude de la reactivite de sept varietes differentes de fumees de silice condensees (csf). L'activite pouzzolanique depend de la nature et de la teneur des impuretes qua'ellesrenferment. On montre que: le carbone imbrule retarde le phenomene pouzzolanique; le carbone imbrule, en forte teneur, peut provoquer un important retard d'hydratation du ciment portland; l'incorporation de csf a un ciment portland permet d'obtenir un ciment ayant une resistance en compression comparable ou superieur a celle d'un ciment portland mitral, toutefois des impuretes dans une csf peut conduire a rejeter son utilisation.
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Lumbroso, Valéria. "Réponses différées des bétons de hautes performances sous chargement stationnaire : influence des conditions d'ambiance et de la composition." Toulouse, INSA, 1990. http://www.theses.fr/1990ISAT0006.

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Le retrait et le fluage du beton sont des proprietes de premiere importance pour le constructeur. En effet, elles conditionnent l'aptitude au service des ouvrages a long terme, leur stabilite pouvant devenir critique lorsque des fissuration non stables, ou des deformations trop importantes apparaissent. L'etude a porte sur le fluage de plusieurs betons a hautes performances (bhp) dans trois modes de conservation differents. Une etude en parallele du retrait ou du gonflement a ete menee, ainsi qu'une campagne d'identification de la microfissuration developpee sous chargement stationnaire. La contrainte appliquee aux eprouvettes a ete de 40% ou 75% de celle de rupture a 28 jours. Les essais de fluage ont ete effectues sur des bhp d'une resistance en compression a 28 jours de 85 mpa. Un dispositif de chargement stationnaire compose de verins de 1000 kn, relies a une centrale hydraulique a ete utilise. Les mesures des deformations ont ete faites au moyen de capteurs de deplacement relies a une centrale de mesure. Le retrait et le fluage des bhp, lorsque ceux-ci contiennent des fumees de silice condensees (fsc), sont plus faibles que ceux des betons traditionnels de structure (30 a 40 mpa). Par contre, ceux des bhp sans fsc sont proches de ceux des betons traditionnels. Pour toutes les compositions etudiees, les deformations differees ou celles de retrait ont ete plus elevees pour une conservation en dessiccation. Lors d'une conservation en milieu sature en eau, les deformations de fluage se sont rapidement stabilisees. L'etude de la microfissuration a montre l'existence d'un reseau de microfissures des 40% de la charge de rupture. Les microfissures augmentent en nombre, en longueur et en ouverture avec le temps et l'intensite de la contrainte appliquee. Apres une periode de fluage, les resistances en compression des bhp sont plus importantes que celles des temoins de meme composition, non charges
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LAJNEF, MONA. "Etude des fumees de silice microstructure, microtexture et influence sur mortier." Paris 6, 1993. http://www.theses.fr/1993PA066399.

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Les fumees de silice (sf) sont de fines poudres legeres qui se forment lors de la fabrication du silicium ou de silico-alliage. Elles constituent un sous-produit encombrant de l'industrie electrometallurgique et pour chaque tonne de silicium fabriquee, 1/4 de tonne de fumee de silice est egalement produit. Additionnees dans le beton, elles ameliorent les proprietes rheologiques et mecaniques des betons. Le but de ce travail a ete de caracteriser, dans un premier temps, d'un point de vue structurale (chimique) et d'un point de vue textural (physique), les sf dans differents etats et environnements. Dans un second temps, les caracteristiques physico-chimiques ont ete correlees aux comportements rheologiques et mecaniques des mortiers dans lesquels elles ont ete incorporees. Dans leur etat de poudre, nous avons identifie en rmn les particularites structurales de certaines sf. En milieu alcalin, la reactivite des sf, exploree par rmn en etudiant l'hydratation de la silice et etudiee par mesure de l'hydrogene produit par les sf, a ete correlee a la presence des elements calcium, silicium libre et carbone libre contenus dans la sf. L'approche texturale a permis de distinguer, par des observations microscopiques directes a differentes echelles, un double niveau d'organisation des sf a l'etat de poudre: le niveau du grain et le niveau de la particule spherique elementaire (dont les agregats constituent le grain). Cette organisation presente un caractere fractal de masse avec des exposants compris entre 1. 54 et 1. 87. Elle a ete quantitativement confirmee en comparant la densite apparente microscopique de la poudre (observee) a la densite calculee a partir des compacites des grains dans le lit de la poudre et des particules elementaires a l'interieur du grain. Il en resulte que les sf peuvent presenter des aspects texturaux les differenciant les unes des autres, a l'echelle de la poudre, mais egalement a l'echelle intragranulaire par l'organisation des particules elementaires a l'interieur des agregats. En milieu mortier, la microtexture des sf a ete demontree comme etant a l'origine des comportements rheologiques des mortiers frais. Dans le mortier durci, les variations des teneurs en elements minoritaires des sf (ca, si et c) ne perturbent pas notablement les proprietes mecaniques. Si a ce stade, les sf sont desagregees a l'etat de particules elementaires, les proprietes mecaniques du mortier sont identiques
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Oudjit, Mohamed Nadjib. "Réactivité des fumées de silice condensées en présence de chaux ou de ciment Portland." Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb376001804.

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Chu, Qingli. "Texture, proprietes de surface et comportement en suspension des fumees de silice." Orléans, 1995. http://www.theses.fr/1995ORLE2037.

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Les fumees de silice (fs) sont des sous-produits formes lors de la fabrication du silicium et de silico-alliages. Leurs caracteres particulaires et cristallochimiques en font un bon additif pour les betons en ameliorant les proprietes rheologiques et mecaniques de ces derniers. Cependant, ces ameliorations ne sont obtenues que si la desagglomeration et la dispersion des fs est complete. L'objectif de ce travail vise a une meilleure comprehension des phenomenes et parametres conduisant a une amelioration de l'etat de dispersion des fs afin d'ameliorer encore la microstructure et les proprietes des beton. Dans ce but, en fonction de la composition initiale des fs, leurs caracteristiques physico-chimiques a l'etat de poudre et leurs proprietes colloidales en milieu aqueux ont ete etudiees et reliees a leurs proprietes structurales et rheologiques. A l'etat de poudre, les fs contiennent en majorite de la silice sous forme quasi-amorphe de cristobalite mal-cristallisee (pseudo-cristallites d'une dizaine d'angstrom), ainsi qu'une faible quantite de quartz, de cristobalite ii cristallisee et de carbure de silicium. L'observation par meb a montre que le traitement de densification influence fortement la morphologie des grains. L'analyse des images de met nous a permis d'obtenir la distribution de taille des particules elementaires pour les fs etudiees, dont les diametres varient de 0,007 a 0,54 m. En milieu aqueux, le traitement de densification modifie la dispersabilite des fs. Les fs densifiees sont plus difficiles a disperser que les fs non-densifiees. Pour les suspensions de fs, les mesures de la vitesse et du volume de sedimentation, les mesures de la charge de surface des particules ainsi que l'analyse granulometrique ont montre que la dispersabilite et la presence de cations, comme ca#+#2, jouent un role tres important dans l'agglomeration des fs. Il n'est donc pas judicieux de former des coulis avec des fs riches en calcium qui engendrent la formation d'agglomerats mecaniquement stables. Le mecanisme d'agglomeration est lie a l'evolution de la charge de surface des particules. Il a ete etudie quantitativement par la methode d'electrophorese et de titrage d'electrolyte. L'etude rheologique des suspensions de fs (viscosite, seuil d'ecoulement et thixotropie) a montre l'importance de la dispersabilite des fs et de leur teneur en impuretes. L'intervention chimique des impuretes est responsable des augmentations de viscosite et de ph au cours du temps, ainsi que de l'evolution de l'agglomeration et de la charge de surface. Une relation quantitative entre la viscosite apparente et la fraction en solide a pu etre demontree en utilisant l'equation de krieger-doupherty et en introduisant un coefficient qui traduit l'influence de l'agglomeration sur la viscosite
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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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De, Milito Jose Antonio. "Avaliação do desempenho de aglomerante a base de gesso com cimento portland de alto forno e silica ativa." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258270.

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Orientador: Gladis Camarini
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
Made available in DSpace on 2018-08-09T18:12:28Z (GMT). No. of bitstreams: 1 DeMilito_JoseAntonio_D.pdf: 60807018 bytes, checksum: d77cec46bea9822138fd4024fad50842 (MD5) Previous issue date: 2007
Resumo
Resumo: O gesso é um aglomerante que tem sido muito empregado em revestimento de paredes. Apresenta um bom desempenho, é econômico e de fácil aplicação, mas limitado ao uso interno devido a sua sensibilidade à água. Algumas tentativas têm sido realizadas para melhorar a sua utilização em ambientes sujeitos à umidade. Neste sentido, pesquisas avançam na tentativa de empregar diferentes adições como resinas epóxi, polímeros, cimentos, escórias, impermeabilizantes, entre outros. O objetivo desta tese foi avaliar o desempenho das misturas de gesso com cimento Portland de Alto Forno e sílica ativa nos revestimentos internos e externos sujeitos à umidade. Para isso verificaram-se as propriedades macroscópicas das misturas por meio de ensaios físicos, químicos, físico-químicos e também a avaliação microestrutural utilizando a microscopia eletrônica de varredura. As misturas foram aplicadas em revestimentos de painéis de alvenaria de blocos de concreto e observados visualmente por um período de cinco anos. Além da observação visual foi verificada a resistência de aderência das misturas aplicadas internamente e externamente. Dos resultados obtidos observou-se uma possível coexistência entre o gesso e o cimento e que a adição de sílica ativa na mistura reduz a formação de etringita, principalmente nos revestimentos externos, sujeitos à umidade. A adição de cimento Portland melhora na abrasão e perda de massa, mesmo em idades mais avançadas. Assim, devido ao elevado custo de algumas adições, e as dificuldades de trabalhar com outros tipos de adição na obra, a adição de cimento Portland e sílica ativa ao gesso permitem uma melhoria de resistência, obtendo um revestimento de baixo custo e de fácil manuseio.
Abstract
Abstract: Plaster of Paris is a binding material being used in masonry as a plaster finish coat. Despite being economical, having good performance as and ease with wich it is applied in building, its use is limited to indoors. Some attempts has been made to improve its performance in external environment. In that sense, researches advance in the attempt at using several admixtures like epoxy resins, polymers, cements slags, waterproofing materials among other things. The objective of this thesis is to assess the performance of certain mixtures of rendering material containing plaster of Paris, slag cement and condensed silica fume when applied in the internal and external plaster finish coat. The macroscopic properties of the mixtures were analyzed through physical and chemical tests and also in SEM. Mixtures were applied on coatings of brick and mortar and visually inspected within five years. Bond strengths of the mixtures were measured, both in internal and external walls. Results showed compatibility between plaster of Paris and slag cement and that presence of condensed silica fume in the mixture reduced the formation of etringite, especially in the external coatings. The addition of Portland blastfurnace slag cement reduced the abrasion and the loss of mass, even in older ages. Therefore, due to the high cost of some admixtures, and the difficulty in working with other kinds of admixtures in the construction sites, the mentioned additions to the plaster rendering allow a mechanical strength improvement, thus resulting in low cost and good workability of the plaster finish coat.
Doutorado
Edificações
Doutor em Engenharia Civil
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Bach, Thi Thuy Ha. "Evolution physico-chimique des liants bas PH hydratés : influence de la température et mécanisme de rétention des alcalins." Phd thesis, Université de Bourgogne, 2010. http://tel.archives-ouvertes.fr/tel-00688015.

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Dans un site de stockage profond de déchets radioactifs, l'utilisation de matériaux à base de ciment Portland en association avec de l'argile pourrait se révéler inadaptée en raison de leur forte alcalinité. Une alternative serait de mettre en œuvre des ciments générant des solutions interstitielles de pH réduit (de l'ordre de 11 au lieu de 13,5 pour un CEM I). Les formulations étudiées dans cette thèse font appel à des ciments composés (également appelés " liant bas pH ") élaborés à partir de mélanges binaires (CEM I / fumée de silice) ou ternaires (CEM I / fumée de silice / cendres volantes ou laitier), avec de forts taux de substitution du CEM I (de 30% à 80%). Le travail réalisé répond à un double objectif : (i) étudier l'évolution chimique des liants bas pH à 50°C ou 80°C, températures qui pourraient être rencontrées dans certaines zones du stockage, et (ii) préciser les mécanismes à l'origine de la bonne rétention des alcalins par ces liants hydratés. (i) Le suivi sur une période d'un an de pâtes de liant bas pH montre que l'accroissement de la température de 20 à 80°C accélère l'hydratation des liants et favorise la consommation de la portlandite. L'allongement et la réticulation des chaînes de silicates des C-A-S-H est mise en évidence par RMN de l'27Al et du 29Si. L'ettringite observée dans les pâtes conservées à 20°C est par ailleurs déstabilisée. Les sulfates ainsi relâchés sont pour partie adsorbés sur les C-A-S-H et dissous dans la solution interstitielle. Le pH de cette dernière est réduit de 1,7 à 2,2 unités selon les formulations. En revanche, les fractions solubles d'alcalins n'évoluent pas de façon importante. Le liant ternaire T1 composé de 37,5% de CEM I, 32,5% de fumée de silice et 30% de cendres volantes est le seul des ciments étudiés à conduire à un pH de solution interstitielle inférieur à 11 aux trois températures considérées (20, 50 et 80°C - échéances 6 mois et 1 an). Son évolution à plus long terme a pu être simulée à l'aide de systèmes modèles reproduisant sa composition chimique à partir d'oxydes réactifs. A l'équilibre thermodynamique, l'assemblage minéralogique est constitué de C-A-S-H (rapports Ca/Si et Al/Si de 0,75 et 0,15 respectivement) ainsi que d'hydroxyde d'aluminium et de silice amorphes, et il impose un pH de 10,3 à 20°C. (ii) Ce sont les C-A-S-H qui jouent le rôle essentiel dans la rétention des alcalins. Le mécanisme mis en jeu est celui d'une compensation des charges négatives des C-A-S-H par interaction électrostatique. Il existe une sélectivité de sorption : le potassium est mieux retenu que le sodium. Celle-ci pourrait être attribuée en première approche à la différence de rayon solvaté entre ces ions. Une modélisation Monte Carlo des interactions électrostatiques entre des particules de C-S-H et un électrolyte contenant des ions sodium et potassium montre cependant que cette hypothèse ne suffit pas à elle seule à expliquer la sélectivité observée expérimentalement.
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Books on the topic "Fumees de silice condensees"

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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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Malhotra, V. M. Condensed Silica Fume in Concrete. Taylor & Francis Group, 2017.

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

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Book chapters on the topic "Fumees de silice condensees"

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Production and Types of Condensed Silica Fume." In Condensed Silica Fume in Concrete, 1–6. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-1.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Condensed Silica Fume in Cement: Biological Considerations." In Condensed Silica Fume in Concrete, 207–10. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-12.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Durability Aspects of Condensed Silica Fume Concrete." In Condensed Silica Fume in Concrete, 145–74. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-9.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Portland Cement-Silica Fume Mortars." In Condensed Silica Fume in Concrete, 83–116. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-6.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Applications." In Condensed Silica Fume in Concrete, 175–200. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-10.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Standards." In Condensed Silica Fume in Concrete, 201–6. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-11.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Physical Characteristics and Product Variation." In Condensed Silica Fume in Concrete, 7–20. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-2.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Handling and Transportation." In Condensed Silica Fume in Concrete, 21–28. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-3.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Reactions in the Cement-Silica Fume-Water System." In Condensed Silica Fume in Concrete, 29–52. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-4.

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Malhotra, V. M., V. S. Ramachandran, R. F. Feldman, and Pierre-Claude Aïtcin. "Portland Cement-Silica Fume Blend Pastes." In Condensed Silica Fume in Concrete, 53–82. CRC Press, 2018. http://dx.doi.org/10.1201/9781351070843-5.

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Conference papers on the topic "Fumees de silice condensees"

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Ng, P. L., J. J. Chen, and A. K. H. Kwan. "Triple Blending with Superfine Natural Zeolite and Condensed Silica Fume to Improve Performance of Cement Paste." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.037.

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Abstract:
Superfine natural zeolite (SNZ) is obtained by grinding natural zeolite to micro-fine size, whereas condensed silica fume (CSF) is by-product of ferrosilicon industry. Both SNZ and CSF are environmentally-friendly supplementary cementitious materials for mortar and concrete production. Owing to the high fineness and favourable grading of SNZ and CSF (the median particle sizes were 4 μm and 0.4 μm, respectively), the addition of SNZ and CSF could successively fill the voids between ordinary Portland cement (OPC) grains and increase the packing density of the binder, so as to reduce the volume of voids to be filled with water. Therefore, triple blending of OPC+SNZ+CSF can benefit the overall performance of cement paste by releasing more water for flowability improvement at the same water/binder (W/B) ratio, or adopting a lower W/B ratio for strength improvement at the same flowability requirement. This study evaluated the effects of adding SNZ and CSF on the packing density and water film thickness of binder. The experimental results proved that triple blending with SNZ and CSF could increase the packing density and improve the flowability and cohesiveness of cementitious paste.
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Reports on the topic "Fumees de silice condensees"

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Douglas, E., and 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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