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Dissertations / Theses on the topic 'Hybrid cement'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Guodong, Xu. "Fibre-cement hybrid composites." Thesis, University of Surrey, 1994. http://epubs.surrey.ac.uk/844012/.

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The theoretical stress-strain behaviour of individual fibre reinforced cement composites is reviewed. Based on the multiple cracking concept of the existing theory, analytical expressions are developed to describe the tensile stress-strain behaviour of a fibre-cement hybrid composite consisting of three components, i.e. two reinforcing fibres with different moduli, strengths and strains to failure and a common cement binder. The model predicts that the tensile stress-strain curve of the hybrid composites consists of five stages, instead of three stages of the existing models for individual fib

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2

Kakemi, Manabu. "Hybrid continuous fibre cement composites." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/606/.

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3

Peled, Alva, Zvi Cohen, Steffen Janetzko, and Thomas Gries. "Hybrid Fabrics as Cement Matrix Reinforcement." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-77694.

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Hybrid systems with two or more fiber materials were used to combine the benefits of each fiber into a single composite product. Strength and toughness optimization of hybrid thin sheet composites has been studied extensively using combination of different fiber types with low and high modulus of elasticity. Hybrid reinforcement is more significant when the reinforcing structure is in fabric geometry. Fabric structure provides full control on the exact location of each yarn and its orientation in the composite during production, thus maximizes the reinforcing efficiency. A high-strength, high-

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4

Zayed, Mona. "Effect of different resin cements on shear bond strength of CAD-CAM crowns fabricated from hybrid materials." University of the Western Cape, 2021. http://hdl.handle.net/11394/8125.

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Magister Scientiae Dentium - MSc(Dent)<br>CAD/CAM crowns have become popular due to the many advantages associated with this technology. Optimal bonding adhesion is crucial for the durability of these indirect restorations and many factors influence this crucial step. Currently, there is no consensus or evidence-based guidelines on the best adhesion protocol for CAD/CAM crowns fabricated from hybrid materials. This study was aimed at investigating the influence of three types of resin cements on the shear bond strength of a hybrid CAD/CAM material in vitro.

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Velandia, Manchego Diego F. "Activated hybrid cementitious system using Portland cement and high volume Colombian fly ash with sodium sulfate." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/10529/.

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Activated hybrid cementitious systems, including high volume fly ash with high loss on ignition (LOI) content and sodium sulfate as activator, are studied to explore more sustainable alternatives to Portland cement (PC) for reducing CO2 emissions in the concrete industry. Most of the background of this project is on mortars with low LOI fly ashes. Performance and deterioration initiation periods have never been studied before for concretes with these materials. None of the following factors have been considered previously in one study: fly ash replacement level, nature of fly ashes obtained fr

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6

Gong, Ting. "Tensile behavior of high-performance cement-based composites with hybrid reinforcement subjected to quasi-static and impact loading." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A73914.

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Hochduktile Betone (Engl.: Strain-Hardening Cement-based Composites – SHCC) und Textilbetone (engl.: Textile Reinforced Concrete – TRC) sind zwei neuartige Faserbetone, die ein duktiles und dehnungsverfestigendes Zugverhalten aufweisen. SHCC bestehen aus feinkörnigen Zementmatrizen und kurzen Hochleistungspolymerfasern, während TRC eine Kombination aus feinkörnigen Zementmatrizen und kontinuierlichen zwei- oder dreidimensionalen Textilschichten darstellt. Letztere bestehen aus Multifilamentgarnen aus Kohlenstoff, alkalibeständigem Glas oder Polymerfasern. Die hohe elastische Verformbarkeit bei

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Abeysinghe, Mudiyanselage Chanaka Madushan Abeysinghe. "Static and dynamic performance of lightweight hybrid composite floor plate system." Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/60323/1/Chanaka_Abeysinghe_Mudiyanselage_Thesis.pdf.

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In the modern built environment, building construction and demolition consume a large amount of energy and emits greenhouse gasses due to widely used conventional construction materials such as reinforced and composite concrete. These materials consume high amount of natural resources and possess high embodied energy. More energy is required to recycle or reuse such materials at the cessation of use. Therefore, it is very important to use recyclable or reusable new materials in building construction in order to conserve natural resources and reduce the energy and emissions associated with conv

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8

Hojczyk, Markus, Oliver Weichold, Andreas Walther, and Martin Möller. "Korrelation der makroskopischen Alterung mit nanoskaligen Veränderungen in hybriden Polymer/Zement-Oberflächenaktivierungen für Glasfaserrovings in Textilbeton." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-77914.

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Hybride Oberflächenaktivierungen von Glasfaserrovings mittels Polymer/Zement-Kompositen ermöglichen eine komplette Durchdringung des Rovings mit Beton von der Matrix bis zu den innenliegenden Einzelfilamenten. Dies erlaubt einen deutlich verbesserten Lasteintrag in den gesamten Rovingquerschnitt bei der Verwendung als Faserverstärkung in textilbewehrten Betonen. Auf Grund von ausgeprägten Domänen hydratisierter Zementsteinphasen innerhalb des Rovings ergibt sich eine komplexe, multiskalige Verbundstruktur, die sich in ihren Eigenschaften deutlich von klassischen polymerbeschichteten Rovings un

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9

Correia, Viviane da Costa. "Produção de celulose nanofibrilada a partir de polpa organossolve de bambu para nanoreforço de compósitos cimentícios." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/74/74133/tde-04092015-104346/.

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Fibras vegetais de baixo módulo de elasticidade são conhecidas pela sua capacidade de aumentar a energia absorvida durante o carregamento dos materiais cimentícios, especialmente no estágio pós-fissurado. A utilização de nanofibras celulósicas pode contribuir para a tenacificação de matrizes frágeis, tanto por melhorar o empacotamento das partículas, com o refinamento de poros, quanto pela interceptação de fissuras na escala nanométrica, com a respectiva absorção de energia. A celulose nanofibrilada provém de um recurso natural, abundante e renovável, possui bom desempenho mecânico e superfíci

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10

Gonçalves, Denilson Pereira. "Estudo de um reator solar híbrido para cura acelerada do concreto em água morna." Universidade Federal de Sergipe, 2012. https://ri.ufs.br/handle/riufs/3489.

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The Portland cement concrete material is the most consumed after the water worldwide due to their versatility molding, strength and durability as a structural material. The curing is the procedure that aims to keep the concrete saturated with water in their early ages and it is essential to ensure the reactions of cement hydration, promoting its consolidation as artificial rock. Curing accomplished through controlled procedures is essential to promote or measure the performance potential of concrete, both resistance and durability. The curing of concrete is therefore an important variable to b

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11

Gong, Ting [Verfasser], Viktor [Gutachter] Mechtcherine, Viktor [Akademischer Betreuer] Mechtcherine, Christina [Gutachter] Scheffler, and Christopher Kin Ying [Gutachter] Leung. "Tensile behavior of high-performance cement-based composites with hybrid reinforcement subjected to quasi-static and impact loading / Ting Gong ; Gutachter: Viktor Mechtcherine, Christina Scheffler, Christopher Kin Ying Leung ; Betreuer: Viktor Mechtcherine." Dresden : Technische Universität Dresden, 2021. http://d-nb.info/1231917342/34.

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12

Lind, Mårten. "Opportunities and uncertainties in the early stages of development of CO2 capture and storage." Doctoral thesis, KTH, Energiprocesser, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10985.

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The topic of this thesis is carbon dioxide (CO2) capture and storage (CCS), which is a technology that is currently being promoted by industries, scientists and governments, among others, in order to mitigate climate change despite a continued use of fossil fuels. Because of the complex nature of CCS and the risks it entails, it is controversial. The aim of this thesis is to analyse how the technology may be further developed in a responsible manner. In the first part of the thesis different methods for capturing CO2 from industrial processes as well as power plants are analysed. The aim is to

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13

Autier, Caroline. "Etude de l’adjuvantation de pâtes cimentaires par différents polycarboxylates : la mésostructure : un lien entre interactions organo-minérales et propriétés macroscopiques." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20061/document.

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Les superplastifiants sont des adjuvants développés pour conférer aux matériaux cimentaires une plus grande fluidité pour un même rapport eau/ciment (E/C) en favorisant la dispersion des particules. De nombreuses études ont été réalisées pour approfondir la compréhension de leur mode d'action. La plupart du temps, elles relient directement la quantité adsorbée au comportement rhéologique des matériaux dans lesquels ils sont incorporés. Cependant, à une échelle intermédiaire, l'organisation mésostructurale de la pâte cimentaire contrôle non seulement sa fluidité, mais également son homogénéité

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14

Abu, Oun Osama. "Conception d'une plate-forme multi-échelle hybride pour évaluer les performances de systèmes orientés internet des objets." Thesis, Besançon, 2015. http://www.theses.fr/2015BESA2015/document.

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Les chercheurs au travers de plusieurs domaines essaient de fournir des solutions pour intégrer les objets et les systèmes dans l’internet des objets (IdO ou IoT pour Internet of Things en anglais). Il y a deux domaines parmi les domaines les plus importants d’IdO. Le premier est de tester et évaluer l’IdO. Plusieurs milliards d’objets sont déjà connectés à l’internet. Ces objets peuvent communiquer entre eux directement sans intervention humaine. Les entreprises et les développeurs doivent être capable de tester et d’évaluer des scénarios différents dans plusieurs environnements. Ces environn

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15

Jiang, Jian-Ming, and 江健銘. "Epoxy--SiO2 Hybrid Material via Sol-Gel for Bone Cement Application." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/69853158659343478955.

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碩士<br>國立臺灣科技大學<br>纖維及高分子工程研究所<br>87<br>The experiment consist of many stage。Firstly，DGEBA and APTS was combine to from as one component。Secondly，through the process of SGP，the component was transform into INPs。The INPs was then crashed into powder from and mix with the right amount of liquid creating free radical reaction forming a new material known as Epoxy-SiO2 bone cement。The main purpose of this experiment is to use basic property of organic and inorganic material to improve the mechanical property of bone cement。 The result of the experiment found that component form after Sol

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16

Su, Yu-Chieh, and 蘇育傑. "Study of Polymethylmethacrylate / Tricalcium Silicate Paste Organic-inorganic Hybrid Bone Cement." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3dje6y.

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碩士<br>國立臺北科技大學<br>化學工程與生物科技系生化與生醫工程碩士班<br>105<br>Bone cement is used as a kind of orthopedic material for surgical filling and bone void filler because of its characteristics of self-hardening, good injectibility and moldability. Tricalcium silicate (TCS), the main component of Portland cement, is widely used in terms of biomedical materials. It has good biocompatibility and self-curing ability to serve as a bone cement. TCS bone cement can reach certain level of mechanical strength after setting, but this is unfortunately a brittle material. Polymethylmethacrylate (PMMA) cement has been

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17

Starinieri, V., David C. Hughes, and D. Wilk. "Influence of the combination of Roman cement and lime as the binder phase in render mortars for restoration." 2013. http://hdl.handle.net/10454/9736.

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No<br>It is known that lime was added to historic Roman cement render mortars. The focus of this work is the influence of the combination of NHL5 and CL90 with Roman cement in mortars for restoration; however, the results indicate a wider potential for render applications in general. It is shown that simply adding lime to Roman cement does not retard its hydration and yields mortars where the binding action of the cement is compromised by the mixing process. If the cement is retarded by means of a pre-hydration process, hybrid mortars can be produced with improved workability and workable life

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