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Dissertations / Theses on the topic 'Cement type'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Lindström, Therese, and Elizabeth Tapia. "Marginal discoloration in dental veneers - Depending on type of cement and removal technique of excess cement." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19637.

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Syfte: Syftet med denna studie var att undersöka resistens mot marginala missfärgningar av en adhesivt cementerad keram till emalj beroende på typ av cement, teknik för avlägsnande av överskottscement och kombinationen av de två faktorerna.Metod: 60 extraherade tänder preparerades i emalj med en slipmaskin till en 90° vinkel. Sintrat IPS E-max CAD preparerades till 60 bitar med måtten 3x3x1mm. Glaskerambitarna cementerades med Variolink®Veneer, Variolink®II och Panavia™F 2.0 enligt bruksanvisning med en kraft på 5kg. Varje cementgrupp bestod av 20 provkroppar där cementöverskottet avlägsnades

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2

Zingg, Anatol. "Cement-superplasticizer interaction : link between macroscopic phenomena and microstructural data of the early cement hydration /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17645.

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3

Hughes, David C., D. Jaglin, R. Kozlowski, N. Mayr, D. Mucha, and J. Weber. "Calcination of Marls to Produce Roman Cement." ASTM, 2006. http://hdl.handle.net/10454/4049.

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no<br>Marls were identified from a range of European sources and assessed for their Cementation Index, as proposed by Eckel. Two were selected for calcination in a laboratory kiln; one from Folwark in Poland (CI 1.75) and one from Lillienfeld in Austria (CI 2.03). Analysis of historical documents, while not revealing precise kiln conditions, does suggest that they were such as not to yield complete decarbonation of the calcite. Consequently, a series of calcinations was undertaken in which the peak temperature control of the kiln was set in the range 730°C to 1100°C, with residence times in th

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4

Möschner, Göril. "A thermodynamic approach to cement hydration : the role of retarding admixtures and Fe-minerals during the hydration of cements /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17422.

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5

Abubaker, Farhat. "Controls on thaumasite in buried concrete : effect of clay composition and cement type." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/6809/.

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Problems due to the thaumasite form of sulfate attack (TSA), which has a significant influence on the strength and durability of buried concrete, have been extensively reported in the UK and worldwide. Thaumasite forms as a result of the presence of high levels of sulfate in pore waters in the ground surrounding concrete, particularly where sulfate is formed by the oxidation of pyrite and the ground temperature is less than about 12°C. In spite of this association with pyrite-bearing ground, an extensive literature search revealed that most previous research, including studies on which current

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6

Hussein, Mohammed Taj Al-Haj. "The effect of cement type on the potential and corrosion behaviour of steel reinforcement." Thesis, University of Surrey, 2003. http://epubs.surrey.ac.uk/2758/.

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The corrosion of reinforcing steel has emerged as the most prevalent factor causing deterioration of reinforced concrete structures in aggressive exposures, such as the Middle East and Arabian Gulf States. Recently, the effect of using embedded steel bars passing through different types of concrete has been found to exacerbate the corrosion activity. This may occur with a steel bar passing from a foundation manufactured with sulphate resistance Portland cement (SRPC) into a beam or column manufactured with ordinary Portland cement (OPC). This thesis aims at elucidating the behaviour of reinfor

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7

Miah, Md Jihad. "The effect of compressive loading and cement type on the fire spalling behaviour of concrete." Thesis, Pau, 2017. http://www.theses.fr/2017PAUU3015/document.

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La recherche présentée dans cette thèse vise à examiner le mécanisme d’écaillage des bétons exposés au feu et comprendre l’influence du chargement mécanique appliqué en compression durant le chauffage. Des cubes (200 x 200 x 200 mm3) et des dalles (800 x 800 x 100 mm3) de béton fabriqués avec des ciments CEM II et CEM III (B40-II et B40-III: fc28days ≈ 40 MPa) ont été exposés à un feu ISO 834-1 sous différents niveaux de chargement uniaxial (cubes) et biaxial (dalles). En outre, l'effet du chargement mécanique (pression de confinement et charge uniaxiale) sur la perméabilité résiduelle au gaz

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8

Silva, Camila Perfeito Evangelista da. "Effect of CAD/CAM abutment height and cement type on the retention of zirconia crowns." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/25/25146/tde-31082018-144600/.

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Aim: To evaluate the effect of different Ti-base abutment heights and cement type on the pullout retention of zirconia-based restorations. Methods: Identical crowns were designed in a CAD software to fit two different Tibase abutment heights, as follows (n=10/group): (i) 4-mm-height Ti-base abutment (Tall), and (ii) 2.5-mm-height Ti-base abutment (Short). Four cement types were selected: (i) Temporary cement (Provisional); (ii) Glass-ionomer cement (Meron); (iii) self-adhesive resin cement (U200), and (iv) conventional resin cement (Ultimate) with universal adhesive for treatment of titanium a

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9

Brien, Joshua V. "DEVELOPMENT OF CEMENTITIOUS MATERIALS FOR ADHESION TYPE APPLICATIONS COMPRISING CALCIUM SULFOALUMINATE (CSA) CEMENT AND LATEX POLYMER." UKnowledge, 2014. http://uknowledge.uky.edu/ce_etds/19.

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The objective of this research was to develop high performing polymer modified calcium sulfoaluminate (CSA) cement materials for use in applications requiring superior adhesion characteristics. Little information is available describing interactions of CSA cement containing minor phase tri-calcium aluminate (C3A) with commonly used admixtures. Given the scarcity of information, a basic approach for developing cementitious materials was followed. The basic approach consisted of four tasks: cement design, admixture design, polymer design and testing developed materials. The iterative, time consu

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10

Cervantes, Abarca Betsy Pierina, and Meza Liz Katherine Villa. "Análisis comparativo del concreto lanzado con cemento tipo IP y tipo HE en el revestimiento de túneles de la mina Orcopampa – Arequipa." Bachelor's thesis, Universidad Ricardo Palma, 2015. http://cybertesis.urp.edu.pe/handle/urp/1262.

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Se viene buscando optimizar la elaboración del concreto lanzado, pero en el proceso se deja de lado el control de calidad por lo cual es indispensable comparar la influencia de un componente primario como el cemento tipo IP y HE. La presente tesis tiene por objetivo realizar el estudio comparativo de concreto lanzado con cemento portland puzolanico tipo IP vs tipo HE en el revestimiento del túnel de la mina Orcopampa–Arequipa. Nos ha impulsado a investigar la necesidad de obtener la relevancia en el desempeño y las implicancias del cemento para shotcrete desde una visión técnica, a través de

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11

Curosu, Iurie. "Influence of fiber type and matrix composition on the tensile behavior of strain-hardening cement-based composites (SHCC) under impact loading." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-233204.

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Strain-hardening cement-based composites (SHCC) are a special class of fiber-reinforced concrete which develop multiple, fine cracks when subjected to increasing tensile loading, reaching strain capacities of up to several percent. The tensile behavior of SHCC is a result of a purposeful material design accounting for the mechanical and physical properties of the cementitious matrix, of the reinforcing fibers and of their interaction. The exceptionally high energy dissipation through inelastic deformations before reaching tensile strength makes SHCC suitable for manufacturing or strengthening

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12

Hot, Julie. "Influence des polymères de type superplastifiants et agents entraineurs d'air sur la viscosité macroscopique des matériaux cimentaires." Thesis, Paris Est, 2013. http://www.theses.fr/2013PEST1114/document.

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Depuis quelques années, le béton connait une période de mutation. Les tendances actuelles concernant la formulation des bétons à hautes performances et à faibles impacts environnementaux montrent que la fraction volumique solide est de plus en plus élevée. Cette augmentation de la fraction volumique solide est cependant difficilement compatible avec une fluidité importante. La thèse présentée ici a donc pour but de proposer des solutions permettant de contourner le problème de viscosité des ces nouveaux bétons. Nous nous attachons ainsi à identifier les mécanismes d'action de certains polymère

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13

Johansson, Niklas. "Uttorkning av betong : inverkan av cementtyp, betongkvalitet och omgivande fuktförhållanden = Drying of concrete : effect of cement type, concrete quality and outer moisture conditions /." Lund : Avd. Byggnadsmaterial, Lunds tekniska högskola, Univ, 2005. http://www.byggnadsmaterial.lth.se/.

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14

Vieira, Geilma Lima. "Influência da microfissuração causada por carregamento precoce nas propriedades mecânicas de concretos produzidos com diferentes tipos de cimento." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/18291.

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No Brasil, o processo construtivo como um todo está modificado, assim como o cálculo estrutural e as técnicas gerenciais de construção. Algumas empresas que visam competitividade no mercado buscam soluções para aumentar a velocidade de suas obras, como redução do tempo de execução da estrutura, redução do período de escoramento e antecipação das alvenarias. A retirada antecipada do escoramento submete a estrutura de concreto a um carregamento precoce, sem que haja tempo de ocorrerem todas as reações de hidratação do cimento, podendo desencadear um processo de microfissuração. Dessa forma, o pr

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15

Serifou, Mamery. "Béton à base de recyclats : influence du type de recyclats et rôle de la formulation." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR15230/document.

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L‟élimination de certains déchets est un enjeu important en Côte d‟Ivoire. Une des solutions proposée est d‟envisager l‟utilisation de ces déchets comme granulats dans les bétons. Les travaux présentés dans ce document portent sur l‟incorporation de quatre différents déchets.La première étude porte sur un béton confectionné avec trois types de déchets : du verre concassé, du ciment durci concassé et des pneus découpés. Elle a été réalisée en deux phases. Dans la première ces déchets ont été incorporés à du béton pour remplacer 100% des graviers (substitution totale). Dans la seconde une substi

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Bonsembiante, Francieli Tiecher. "Reação álcali-agregado : avaliação do comportamento de agregados do sul do Brasil quando se altera o cimento utilizado." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/8021.

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A reação química que ocorre entre os hidróxidos alcalinos presentes nos poros do concreto e alguns minerais constituintes dos agregados tem causado sérios danos às estruturas. Até o presente momento a prevenção é a melhor forma de evitar que a reação se desencadeie, uma vez que as soluções remediativas ainda necessitam de estudos mais aprofundados para serem implementadas. Neste sentido, a utilização de adições pozolânicas no concreto tem se mostrado uma alternativa eficaz, sendo que a forma mais fácil de empregá-las é através do uso de cimentos compostos com adições. Porém, são poucos os estu

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17

Curoşu, Iurie [Verfasser], Viktor [Akademischer Betreuer] Mechtcherine, Ulrich [Gutachter] Häußler-Combe, and Ravi [Gutachter] Ranade. "Influence of fiber type and matrix composition on the tensile behavior of strain-hardening cement-based composites (SHCC) under impact loading / Iurie Curosu ; Gutachter: Ulrich Häußler-Combe, Ravi Ranade ; Betreuer: Viktor Mechtcherine." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://d-nb.info/1156169380/34.

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18

Staffansson, Frida. "En studie om konstruktörer kan minska klimatpåverkan av koldioxid från betong via kravspecifikation." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Byggnadsteknik och belysningsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-45269.

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Syfte: Byggindustrin kommer framförallt att påverkas av hållbarhetsutvecklingens framfart. FN har satt hållbarhetsmål presenterade i Agenda 2030 och för att möta dessa mål måste hållbarhet stå i fokus för både yrkesverksamma och intressenter. Betong är ett material som består av ballast, vatten och cement som hårdnar över tiden och används världen över inom byggindustrin. År 2014 uppskattades betongproduktionen stå för hela fem procent av alla antropogena koldioxidutsläpp. Syftet med studien är att undersöka miljöpåverkan från olika betongkvaliteter mätt i koldioxidekvivalenter och använda res

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19

Lino, Vidal Diego Jesus, and Pacheco Claudio Fernando Quispe. "Análisis y evaluación del uso de fibra de basalto en el concreto para mejorar la resistencia a la corrosión de estructuras sumergidas en las zonas marinas de Pisco." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653691.

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En el siguiente informe de tesis, se presenta el desarrollo de un concreto especial reforzado con fibra de basalto para evitar la corrosión en los elementos estructurales encontrados en la ciudad de Pisco. Este material es clasificado como polímero utilizado para mejorar las propiedades físicas y mecánicas del concreto. Por ello, los ensayos en probetas estándar de concreto con diferentes porcentajes de este adicionado generan resultados eficientes que comprueban la hipótesis a investigar. Como punto de referencia y comparación también se evaluó un concreto convencional. En ambos casos fueron

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20

Berthe, Guillaume. "Évolution des propriétés de confinement des roches-couvertures type argilite soumises à des fluides enrichis en CO2 : impact des discontinuités naturelles et artificielles." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00795668.

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Ces travaux de recherche s'inscrivent dans le cadre des études de faisabilité du stockage du dioxyde de carbone en couches géologiques profondes, et portent plus particulièrement sur l'évolution des propriétés de confinement de roches-couvertures de type argilite, soumises à des fluides enrichis en CO2. Pour ce faire, les argilites de Tournemire (Aveyron, France) ont été utilisées comme roches analogues, après avoir identifié leurs possible points de faiblesse vis-à-vis du stockage, à savoir leur minéralogie, la présence de fissures naturelles remplies de calcite et la présence d'interfaces ci

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Vanhamme, Géraldine. "Etude de la réactivité des alitiers du haut-fourneau dans les ciments de type CEM III." Doctoral thesis, Universite Libre de Bruxelles, 2011. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209956.

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En Europe, suite à la fermeture de nombreux sites sidérurgiques, une utilisation croissante de laitiers de haut-fourneau d’origine et d’âge variés voit le jour depuis plusieurs années. Cette évolution conduit à une diversification de la composition chimique et minéralogique des laitiers. Connaître l’influence de ces caractéristiques sur la réactivité des laitiers utilisés en substitution du clinker dans les ciments de haut-fourneau (CEM III) devient, dès lors, primordial pour assurer les performances de tels ciments.<p><p>Dans ce contexte, le présent travail a pour but d’investiguer l’influenc

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22

Ustuner, Didem Tugba. "Effectiveness Of Set Accelerating Admixtures With Different Cement Types." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12611011/index.pdf.

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Accelerating and mineral admixtures, one of the major ingredients in concrete, are primarily used to modify the properties of both fresh and hardened concrete. Within the scope of this thesis, there were four types of cements having almost identical fineness. The mixes were prepared by using natural pozzolan, blast furnace slag and limestone conforming to TS EN 197-1 and two types of accelerating admixtures, namely triethanolamine (TEA) and calcium formate (CF). The effect of set accelerating admixtures with different cement types on the setting time, water demand and compressive strength

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23

Yaghoubi, Mohammadjavad. "Behaviour of waste tyre fibre-reinforced cement-stabilised Perth sand." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2015. https://ro.ecu.edu.au/theses/1602.

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There are several improvement methods available for modifying soils. Cement stabilisation has been one of the popular improvement methods for cohesionless soils. Over the past three decades, many studies have been done to investigate the effects of adding synthetic and natural fibres to soil as the reinforcing material alone or with cement. Utilisation of the fibres from waste materials such as used tyres and carpets, which are available in large quantities worldwide, can be beneficial. Though significant research has been conducted on studying the behaviour of cement-stabilised soil, the effe

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24

Wallevik, Jon Elvar. "Rheology of Particle Suspensions : Fresh Concrete, Mortar and Cement Paste with Various Types of Lignosulfonates." Doctoral thesis, Norwegian University of Science and Technology, Department of Structural Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-319.

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<p>The major issue concerns how the different lignosulfonate types changes the rheological properties of the cement based material (concrete, mortar and cement paste) as a function of temperature and time. In such terms, it is demonstrated that the high molecular weight lignosulfonates performs far better than the low molecular weight ones. The former type also performs considerable better compared to a naphthalene based polymer. </p><p>The above investigation is done with help from the second part of this thesis, which identifies some of the parameters p1, p2,... affecting the shear viscosity

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Bazazorde, Seyed M. A. "UCS and CBR behaviour of Perth sandy soil reinforced with waste tyre fibres and cement." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2018. https://ro.ecu.edu.au/theses/2076.

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Weak and unsuitable soil conditions have always caused problems for civil engineers during the construction of structures. To avoid problems in a cost-effective manner, proper and reliable solutions need to be developed. Fibre reinforcement and cement stabilisation are the most efficient and common methods in geotechnical engineering applications when engineers have problematic soil conditions. These methods can be used in different applications, such as pavement layers, retaining walls and slopes. Over the past three decades, many studies have been done to investigate the effects of adding sy

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Schöler, Axel [Verfasser], Horst-Michael [Akademischer Betreuer] [Gutachter] Ludwig, Barbara [Gutachter] Lothenbach, and Yuanzheng [Gutachter] Yue. "Hydration of multi-component cements containing clinker, slag, type-V fly ash and limestone / Axel Schöler ; Gutachter: Horst-Michael Ludwig, Barbara Lothenbach, Yuanzheng Yue ; Betreuer: Horst-Michael Ludwig." Weimar : F. A. Finger-Institut für Baustoffkunde, 2016. http://d-nb.info/1117091201/34.

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Chang, Kuang-Yu, and 張光瑜. "A study on the properties of cement-based crack injection materials using sulphoaluminate cement and type I cement." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/c5472z.

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碩士<br>國立臺灣海洋大學<br>河海工程學系<br>107<br>Different proportions of type I cement and calcium sufoaluminate cement in blended cement system for manufacturing the cement-based crack injection material were investigated. The goal of this study is to find appropriate mixtures such that the passing time requirement (maximum 8 minutes) in EN-1504 and the 28-d splitting tensile strength exceeding 3 MPa can be achieved. The experiments conducted include the injection capability test (passing time), the splitting tensile strength test, the viscosity test, the compressive strength test of mortar cubes and the

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Chen, Chung-Yang, and 陳宗揚. "Effect the flowability properties of cement/superplasticizer related to the content and type of gypsum in the cement." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/53483266652710638418.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>91<br>Effect the flowability properties of cement/superplasticizer related to the content and type of gypsum in the cement Student: Chen , Chung-Yang Advisor: Dr. Kuo, Wen-Ten Institute of Civil Engineering and Disaster Pervention National Kaohsiung University of Applied Sciences ABSTRACT Cement commonly adds gypsum in making process for adjusting setting time. Gypsum content quite affects the property of cement, and clinker addition the gypsum grind con simultaneously. If the temperature o

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Chou, Li-Ling, and 周俐齡. "Mechanical Properties Test and Stady of Taiwan’s of Type I Cement." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/5gfafb.

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碩士<br>國立臺北科技大學<br>土木與防災研究所<br>95<br>The cement is the indispensable binding material in the concrete and the quality of cement influences the concrete strength. The main materials of cement are limestone, clay, silica sand, and iron ore, etc, among them the limestone accounts for 75%- 85%, it is the main materials of cement. The limestone is mainly source of the western Taiwan. After mining all the year round, the source of limestone already almost disappeared. The government established the Eastward Policy of Cement Industry in 1991. According to Taiwan cement''s association statistical data

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Cheng, Yu-Chieh, and 鄭郁潔. "Simulation of Piezoelectric Properties of 0-3 Type Cement-Based Piezoelectric Composites." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/67281990695183758878.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>103<br>Based on the cubes model modified by curing effect and regression analysis, an empirical formula is proposed to predict piezoelectric strain constant d33 and relative dielectric constant εr of 0-3 type cement-based piezoelectric composites, where piezoelectric inclusions is lead zirconate titanate (PZT) with 30%-70% volume fraction respectively. The composites were dryly mixed by cement and PZT, and then pressed by 80MPa compression to form a disc-like specimen. Specimens were cured at 90℃ with water, after that, were poled at 150℃ with 1.5kV/mm polin

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Ou, Hung-Yi, and 歐宏毅. "Influence of Adding Pozzolans on the Properties of Portland Cement Type II." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/29808971469658026153.

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碩士<br>國立屏東科技大學<br>土木工程系所<br>95<br>Fly ash and furnace slag are the dispose waste both of the fossil power plant and the steel industry. Several researches and experiment show those can be recycled. They can replace the cement as the additive and make the concrete structure more environmental and then reach the economic benefit by recycling them. Because the fly ash and furnace slag have pozzolans’ characteristic, they can not only replace partial cement, but also improve and upgrade the mechanics and physical property. So this research will mainly focus on the different amount of fly ash a

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Tzung-Shiun, Tsai, and 蔡宗勳. "The Effect of the Cement Type on the Properties of Eugenic Concrete." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/92799027357249737507.

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Tang, Chao-Hsu, and 湯朝旭. "The Study on the Durability Feature of Portland Cement Type I and Type II Concrete with Pozzolanic Materials." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/96466138193067416820.

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碩士<br>國立屏東科技大學<br>土木工程系所<br>97<br>The concrete structure in order to ensure the use of life-cycle. From the mixed proportion design, construction process and maintenance have to consider the problem for the durability of concrete. The concrete structure increase resistance to chemical attack, abrasion-erosion, weathering and other destructive forces. The use of concrete in order to enhance the life cycle. The purpose of this study is to enhance the durability of concrete structure must be considered the item and statement. Including the durability of concrete by the fracture mechanics invasion

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Chiang, Chang-Keng, and 姜長庚. "Effect of Curing time and Poling Field for Piezoelectric Properties of 0-3 Type Slag Cement and Fly Ash Cement Piezoelectric Composites." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/22312740197792587262.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>101<br>In this study, 0-3 cement piezoelectric composites containing slag and fly ash are investigated. Cement piezoelectric composites consist of 50% PZT as inclusion and 50% cement binder as matrix by volume. Cement is replaced by slag or fly ash from 10% to 50% in the binder. Specimen was formed by a compressive stress of 80MPa, cured in the water with 90℃ for 7 days, 28 days and 56 days, respectively, and then polarized in 150℃ silicon oil bath for 30 minutes, in which three poling fields with 0.5kV/mm, 1kV/mm and 1.5kV/mm are applied. We examine microst

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Chen, Yen-Nien, and 陳彥年. "Piezoelectric Properties and the Process of 0-3 Type PZT Cement-Based Composites." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/61376849058719763691.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>97<br>In this work, the 0-3 type PZT cement-based composite consists of PZT and cement binder by using blending method and pressure method, respectively. When PZT cement-based composite is uniform confirmed by SEM, and then, the material is poled. After poling, piezoelectric properties of composite the composite are measured 24 hours later. Material variables include curing conditions, thickness of specimen poling time, poling voltage and volume fraction of PZT respectively. Results show that piezoelectric properties of PZT composite in curing under room

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KANABAR, NEHA. "COMPARISON OF ETHYLENE TERPOLYMER, STYRENE BUTADIENE, AND POLYPHOSPHORIC ACID TYPE MODIFIERS FOR ASPHALT CEMENT." Thesis, 2010. http://hdl.handle.net/1974/6236.

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The objective of this study was to compare different modifiers in two asphalt cements, namely Cold Lake 80/100 obtained from the Edmonton, Alberta refinery of Imperial Oil Limited and a PG 58-28 obtained from a now closed refinery in the Montreal, Quebec area. The modifiers investigated were polyphosphoric acid (PPA), styrene-butadiene-styrene (SBS), and reactive ethylene terpolymer (Elvaloy® RET). The comparisons were done based on both unaged and laboratory-aged materials. The investigation covers high temperature grading using a dynamic shear rheometer (DSR), low temperature grading usin

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Lee, Chung-Yi, and 李仲誼. "The Study of Cement Based Tile Adhesive’s Performance with Different Type of the Tiles." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/3jtsxc.

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碩士<br>國立臺北科技大學<br>土木與防災研究所<br>101<br>As tile industry made progress and living standard uplifted , due to esthetic concern , tile users demand bigger size tile , tile with less porosity and less water absorption rate .The trend however produce a problem to the traditional cement sand mortar served as the tile adhesive which is unable to produce sufficient bonding strength to the modern tiles even with grooved backing .Only modern tile adhesive with polymer modified characters can generate sufficient bonding strength required. Traditional cement sand mortars are often mixed on site different mi

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Yeh, Ren Hau, and 葉仁豪. "Effect of Pozzolanic Materials and Poling Field on 0-3 Type Cement-Based Piezoelectric Composites." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/35918480210137451841.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>99<br>In this study, the microstructure and piezoelectric properties of 0-3 type PZT cement-based piezoelectric composite containing pozzolanic materials under different poling fields are investigated, where PZT is the inclusion with 50% volume fraction and the binders include 50% cement or a mixture of 40% cement and 10% pozzolanic materials in volume. Three pozzolanic materials were used containing silica fume, blast furnace slag and F grade fly ash. The composite was applied to three poling fields including 0.5kV/mm, 1kV/mm and 1.5kV/mm, respectively. The

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Lin, Dung-Hung, and 林棟宏. "Mixture Proportion of 0-3 Type Cement-Based Piezoelectric Composites and the Response of Force and Voltage on Concrete Members." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/efccf9.

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博士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>104<br>This research tried to design a cement piezoelectric composite in order to utilize as a health detector sensor in concrete structures. The cement piezoelectric composite was made by equal volume ratio of cement matrix and piezoelectric media with Fuller’s ideal gradation curve design. Temperature treatment processes were used to improve the piezoelectric properties of cement piezoelectric composites. Comparison between the conventional PZT piezoelectric sensor and cement piezoelectric composite sensor were done through three-point bending concrete bea

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Lin, Sheng-Chih, and 林聖智. "The Investigation of Stability in Different Pilot Hole Type and PMMA Bone Cement Transpedicular Screw Augmentation for Pedicle Screw Loosening." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/n5d8k7.

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碩士<br>國立陽明大學<br>生物醫學工程學系<br>106<br>There are many kinds of methods to treat spinal disease in clinical case. One of the methods is using pedicle screw system, becoming a common spinal surgery. The pedicle screw which is inserted into the vertebrae may be repeat sustain cyclic loading until loosening. It lead to the necessity of the secondary spinal surgery in clinical. There are two ways to enhance the stability of spinal, one is inserting pedicle screw, the other is injecting PMMA bone cement prior to screw insertion. However, the effects of pedicle screw fixation in two kinds of the secondar

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Curosu, Iurie. "Influence of fiber type and matrix composition on the tensile behavior of strain-hardening cement-based composites (SHCC) under impact loading." Doctoral thesis, 2017. https://tud.qucosa.de/id/qucosa%3A30801.

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Strain-hardening cement-based composites (SHCC) are a special class of fiber-reinforced concrete which develop multiple, fine cracks when subjected to increasing tensile loading, reaching strain capacities of up to several percent. The tensile behavior of SHCC is a result of a purposeful material design accounting for the mechanical and physical properties of the cementitious matrix, of the reinforcing fibers and of their interaction. The exceptionally high energy dissipation through inelastic deformations before reaching tensile strength makes SHCC suitable for manufacturing or strengthenin

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Duff, Renée E. "Effect of cement type and precision of fit on fracture strength of Procera zirconium oxide copings a thesis submitted in partial fulfillment ... for the degree of Master of Science in Prosthodontics ... /." 2004. http://catalog.hathitrust.org/api/volumes/oclc/67878518.html.

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Maawadh, Ahmed. "Cementing zirconia: effect of cement types, polymerization mode, cement space, and air particle abrasion." Thesis, 2018. https://hdl.handle.net/2144/31312.

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OBJECTIVES: To evaluate various cements in vitro for adhesion to zirconia, light curing vs. self-curing, the effect of particle abrasion (APA) on the zirconia intaglio for maximizing retention, the effect of thermocycling, and the effect of cement space. METHODS: The tested cements included: Ceramir C&B (Doxa) Panavia F2.0 (Kuraray); Multilink Automix (Ivoclar); Theracem (Bisco); Duolink (Bisco); Bifix (Shofu); CemEZ (Zest Dental). For testing cements retention, custom made zirconia rings 12.5 mm outer diameter, 5.5 mm height and 6.147 mm inner diameter were used to emulate crowns. Round ste

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lee, Tsung-Yen, and 李宗彥. "The Pozzolanic Reaction Effect of the MSWI Slag on the Different Types of Cement." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/69438840602241792537.

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碩士<br>國立中央大學<br>環境工程研究所<br>89<br>This study investigated the pozzolanic reactions and engineering properties of slag blended cements (SBC). In this work, SBCs were prepared by blending slag, which was generated from the melting of municipal solid waste incinerator fly ash (referred to as MSWFS), with five types of cements, respectively. Major cement constituents such as C3S (i.e., 3CaO.SiO2) and C3A (i.e., 3CaOAl2O3) were also used alternatively in replacement of cement for contrast. The experiments were divided into three parts: (1) characterization of the slag prepared by melting the MSW inc

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Harinadha, Reddy D. "Time Dependent Deformations and High Temperature Effects on Different Types of Concrete : Experimental and Numerical Studies." Thesis, 2016. http://etd.iisc.ac.in/handle/2005/3207.

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Estimating the delayed strains in concrete, namely creep and shrinkage is very important to asses the condition of the structure. Time dependent deformations in concrete, both creep and shrinkage, play a critical role in prestressed concrete structures, such as bridge girders, nuclear containment vessels, etc. These strains result in lossess, through release of prestress, and thereby influence the safety of these structures. Recognizing the role of free and bound moisture movement is the primary ingredient responsible for the development of both creep and shrinkage stains as well as the degra

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Harinadha, Reddy D. "Time Dependent Deformations and High Temperature Effects on Different Types of Concrete : Experimental and Numerical Studies." Thesis, 2016. http://hdl.handle.net/2005/3207.

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Estimating the delayed strains in concrete, namely creep and shrinkage is very important to asses the condition of the structure. Time dependent deformations in concrete, both creep and shrinkage, play a critical role in prestressed concrete structures, such as bridge girders, nuclear containment vessels, etc. These strains result in lossess, through release of prestress, and thereby influence the safety of these structures. Recognizing the role of free and bound moisture movement is the primary ingredient responsible for the development of both creep and shrinkage stains as well as the degra

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Wang, An-Pang, and 王安邦. "A Study of CrN Coating on Different Types of Cemented Tungsten Carbides." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/39884031037169405049.

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碩士<br>逢甲大學<br>材料科學研究所<br>85<br>Recently, due to the highly developed techniques in precision and injectionmolding, compoments made with high strength, high temperature crossion resistance materials are in greater need everday. Thus the properties ofsuperhard alloys are needed to be improved in many ways. Alloy addition and/ordeposition of ceramic hard coating can improve their mechanical properties at elevated temperature: thereby greatly increase their lifetime. Chromium nitridhas many fin

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Chen, Cheng-Hao, and 陳正浩. "The Effects of Cement Types on the Properties of the Pervious Concrete Made by Using Electric-erc Furnace Slag as Aggregates." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/926ncj.

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碩士<br>國立臺灣海洋大學<br>河海工程學系<br>102<br>At present, the use of concrete projects of civil engineering sector has reached a pinnacle of the stage, as long as people look to the building, the vast majority related to concrete related, but the extensive use of concrete projects, in addition to seriously affect the natural environment, but also indirectly extends many problems, So how, under existing conditions, low cost, high efficiency to achieve project objectives and to improve the environmental impact of the destruction of concrete projects, the trend of the times. Which concrete buildings and asp

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Bersebach, Petra. "Abschliff von Knochenzement bei aseptischer Lockerung zementierter Femurschäfte (Typ CF-30) - Eine Volumenabschätzung anhand von Reoperationspräparaten." Doctoral thesis, 2011. http://hdl.handle.net/11858/00-1735-0000-0006-B22E-3.

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Niroshan, Naguleswaran. "Cemented paste backfill modification using different types of binders and insight into its mechanical, micro-structure, and flow properties." Thesis, 2018. https://researchonline.jcu.edu.au/53672/1/53672-niroshan-2018-thesis.pdf.

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Cemented paste backfill (CPB) is widely used in backfilling underground mine voids. It consists of fine grained mine tailings with a small dosage of binder (~ 3–10%). Cement is the common binder, which is currently being used in most of the mines in North Queensland, Australia. In an effort to control backfilling costs, investigations are being currently carried out for the use of some alternative binders, that is, pozzolanic binder such as blended cement (BC) containing slag or fly ash in CPB. A thorough study to quantify the effects of additives, such as blast furnace slag and fly ash with o

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