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Dissertations / Theses on the topic 'Cementitious composite'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 April 2022

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1

Farooq, Mohammed. "Development of FRP based composite fibre for fibre reinforced cementitious composites." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57668.

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This thesis describes a method of development of a novel fibre based on fibre reinforced polymers (FRP), for use fibre reinforcement in concrete. Thermosetting epoxy resin matrix were reinforced with E-glass, S-glass, and Carbon fibre to produce different types of composite fibres. The FRP panels were produced using the Vacuum Infusion technique, and then cut to different fibre sizes. The volume fractions of reinforcements within the FRP fibre were controlled by using woven and unidirectional fabrics. The number of layers of reinforcing fibres were also changed, to obtain the optimal thickness

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2

Mihai, Iulia. "Micromechanical constitutive models for cementitious composite materials." Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/24624/.

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A micromechanical constitutive model for concrete is proposed in which microcrack initiation, in the interfacial transition zone between aggregate particles and cement matrix, is governed by an exterior-point Eshelby solution. The model assumes a two-phase elastic composite, derived from an Eshelby solution and the Mori-Tanaka homogenization method, to which circular microcracks are added. A multi-component rough crack contact model is employed to simulate normal and shear behaviour of rough microcrack surfaces. It is shown, based on numerical predictions of uniaxial, biaxial and triaxial beha

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3

Hazelwood, Tobias. "Investigation of a novel self-healing cementitious composite material system." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/76766/.

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This thesis describes a portion of the ongoing development of a novel self-healing cementitious material system named LatConX originally proposed by a group of researchers at Cardiff University. The research reported was undertaken with the aim of furthering understanding of the system’s long-term behaviour, ultimately with a view to providing predictions for the performance of the system over a structure’s working life. This aim is accomplished through a combination of experimental and numerical research. An experimental series is presented which investigates the stress relaxation behaviour o

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4

Wang, J., S. Dong, Ashraf F. Ashour, X. Wang, and B. Han. "Dynamic mechanical properties of cementitious composites with carbon nanotubes." Elsevier, 2019. http://hdl.handle.net/10454/17465.

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Yes<br>This paper studied the effect of different types of multi-walled carbon nanotubes (MWCNTs) on the dynamic mechanical properties of cementitious composites. Impact compression test was conducted on various specimens to obtain the dynamic stress-strain curves and dynamic compressive strength as well as deformation of cementitious composites. The dynamic impact toughness and impact dissipation energy were, then, estimated. Furthermore, the microscopic morphology of cementitious composites was identified by using the scanning electron microscope to show the reinforcing mechanisms of MWCNTs

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5

Alaee, Farshid Jandaghi. "Retrofitting of concrete structures using high performance fibre reinforced cementitious composite (HPFRCC)." Thesis, Cardiff University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.431742.

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6

Boonsiri, Po. "Monitorina Stress and Strain of structures by using Carbon Fibre-Reinforced Cementitious Composite." Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.523739.

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7

Du, Yang. "Durability performance of eco-friendly ductile cementitious composite (EDCC) as a repair material." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58938.

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The objective of the experimental program in this thesis is to investigate the durability performance of Eco-friendly ductile cementitious composite (EDCC), a newly developed repair material for seismic retrofitting. Several aspects of the durability performance of EDCC were investigated in this work, in terms of restrained shrinkage resistance, freeze and thaw resistance and bond strength degradation before and after environmental exposure. All the tests focused on repair overlay and substrate composite assembly. Six different EDCC fiber mixes were involved in the testing to discover the best

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8

Sultangaliyeva, Fariza. "Formulation of fluid fire-resistant fiber-reinforced cementitious composite : Application to radioactive waste disposal." Thesis, Pau, 2020. http://www.theses.fr/2020PAUU3041.

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Le but de ce travail est de développer un béton fluide résistant au feu renforcé en fibres de polypropylène pour les colis de stockage des déchets radioactifs de moyenne activité à vie longue. Le défi de ce travail consiste à utilizer des fibres de polypropylène qui, même ajoutées en petite quantité, améliorent la résistance au feu mais diminuent de manière significative la maniabilité des bétons frais. Des essais à l’échelle du laboratoire sont effectués afin d’évaluer les comportements rhéologique et à haute température des matériaux cimentaires contenant des fibres de polypropylène. Dans la

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9

Ducoulombier, Nicolas. "Anisotropic concrete : 3D priting of concrete reinforced by long fibers, process, characterisation et modelisation." Thesis, Paris Est, 2020. http://www.theses.fr/2020PESC2070.

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Ce travail s’intéresse au renforcement des matériaux cimentaire mis en œuvre par fabrication additive à grande échelle. Ce nouveau procédé permet une complexité géométrique importante, généralement fortement consommatrice de moyens matériels et humains. De plus, il rend théoriquement possible l’industrialisation de la fabrication d’éléments constructifs singuliers, par exemple optimisés par répondre à un chargement mécanique donné. Cependant, il n’existe à l’heure actuelle aucune méthode de renforcement standardisée permettant d’obtenir la résistance en traction et la ductilité nécessaire pour

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10

Morsy, Mohamed Ibrahim Nasr Verfasser], Harald [Akademischer Betreuer] [Garrecht, and Farouk [Akademischer Betreuer] Heider. "Properties of Rice Straw Cementitious Composite / Mohamed Ibrahim Nasr Morsy. Betreuer: Harald Garrecht ; Farouk Heider." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2011. http://d-nb.info/1106113357/34.

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11

Morsy, Mohamed Ibrahim Nasr [Verfasser], Harald [Akademischer Betreuer] Garrecht, and Farouk [Akademischer Betreuer] Heider. "Properties of Rice Straw Cementitious Composite / Mohamed Ibrahim Nasr Morsy. Betreuer: Harald Garrecht ; Farouk Heider." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2011. http://nbn-resolving.de/urn:nbn:de:tuda-tuprints-28473.

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12

Pham, Ngoc Phuong. "Rubberized cement-based composite as material for large surface applications : effect of the rubber-cementitious matrix bond." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30077.

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La capacité de déformation améliorée et la résistance à la fissuration par retrait rendent les composites cimentaire caoutchoutés adaptés aux applications de grande surface telles que les chaussées et les rechargements minces adhérents à base cimentaire. Cependant, le défaut d'adhérence entre les agrégats de caoutchouc et la matrice cimentaire, bien connu, demeure nuisible aux propriétés mécaniques et de transferts de ces matériaux. De plus, en raison de la faible rigidité des granulats caoutchouc, il est universellement accepté une réduction de certaines propriétés mécaniques des composites c

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13

Monteiro, André Oliveirinha. "Development of a multifunctional carbon black/cement composite for traffic monitoring." Doctoral thesis, Universidade de Aveiro, 2018. http://hdl.handle.net/10773/23030.

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Doutoramento em Engenharia Civil<br>As sociedades modernas estão fundadas em sistemas infraestruturais como redes de abastecimento de água, electricidade, comunicação e transporte. Com o aumento da procura global pela eficiência, imposto pelo século XXI, o desempenho esperado das estruturas segue inevitavelmente a mesma tendência. Esta busca de performance tem levado às infraestruturas físicas e à tecnologia digital se fundirem no conceito de “infraestruturas inteligentes”, através de vastas redes de monitorização, aliadas a subsistemas de informação. A disciplina de gestão de tráfego é

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14

Dolores, Gonzalo Mármol de los. "Low-alkalinity matrix composites based on magnesium oxide cement reinforced with cellulose fibres." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/74/74133/tde-17082017-113846/.

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A lower-alkalinity cement based on MgO and SiO2 blends is analysed to develop clinker-free Fibre Reinforced Cementitious Composites (FRCC) with cellulosic fibres in order to solve the durability problems of this type of fibres when used in FRCC with Portland cement. Hydration evolution from 7 to 28 days of different MgO-SiO2 formulations is assessed. The main hydration products are Mg(OH)2 and M-S-H gels for all the formulations studied regardless of age. Hardened pastes are obtained with pH values < 11 and good mechanical properties compared to conventional Portland cement. 60% MgO-40% SiO

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15

Song, Gao. "Matrix manipulation to study ECC behaviour." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/4647.

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Thesis (MScEng (Civil Engineering))--University of Stellenbosch, 2005.<br>192 leaves on CD format, preliminary i-xii pages and numbered pages 1-135. Includes bibliography, list of figures and tables.<br>ENGLISH ABSTRACT: As a fibre reinforced material, engineered cementitious composite (ECC) has tough, strain-hardening behaviour in tension despite containing low volumes of fibres. This property can be brought about by developments in fibre, matrix and interfacial properties. Poly Vinyl Alcohol (PVA) fibre has been developed in recent years for ECC, due to its high tensile strength and elastici

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16

Cozza, Alessandro. "Bond properties of SRG anchors employed to improve the effectiveness of SRG/FRCM composites." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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Fiber reinforced cementitious matrix (FRCM) composites represent a newly-developed promising alternative to traditional materials for strengthening and retrofitting reinforced concrete and masonry structures. FRCM composites present several advantages with respect to fiber reinforced polymers (FRP) composites. However, while FRP composites have been extensively studied in the last decades and several design guidelines and analytical formulations are available, FRCM composites are still in their infancy and very few data are present in the literature. Thus, another issue that should be solved r

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17

PICANCO, MARCELO DE SOUZA. "CEMENTITIOUS COMPOSITES REINFORCED WITH CURAUÁ FIBERS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8936@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A busca por materiais alternativos que possam substituir as fibras de amianto, compondo o fibro-cimento, tem-se tornado objeto de estudos recorrentes. As fibras vegetais surgem como opção econômica, salubre e ecologicamente adequada. O objetivo deste trabalho foi estudar o comportamento da adição da fibra de curauá em compósitos cimentícios, visando substituir o amianto. Essa fibra mineral é bastante conhecida pelos danos que provoca à saúde humana, já tendo sido banida em muitos países industrializados. Desde 1979, o Grupo

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18

Wang, Youjiang. "Mechanics of fiber reinforced cementitious composites." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14296.

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19

Nguyen, Thanh Hai. "Contribution à l'étude du comportement thermomécanique à très haute température des matériaux composites pour la réparation et/ou le renforcement des structures de Génie Civil." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10244/document.

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Dans le domaine du renforcement et/ou de la réparation des structures en béton armé par des matériaux composites à l'aide de la méthode du collage extérieur au moyen d'un adhésif époxy, une des préoccupations de la communauté scientifique est l'intégrité structurelle de ce système dans le cas d'incendie dans lequel la haute température est une caractéristique essentielle et peut atteindre jusqu'à 1200°C. Ce travail de recherche est axé sur le comportement thermomécanique à très haute température des matériaux composites [un composite à base de polymère carbone/ époxy (Carbon Fiber Reinforced P

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20

Zhang, Jie. "Microstructure study of cementitious materials using resistivity measurement /." View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202008%20ZHANG.

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21

Cheung, Kwok Fai. "Applications of pseudo-ductile engineered cementitious composites for construction industry /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202004%20CHEUNGK.

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Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2004.<br>Includes bibliographical references (leaves 314-315). Also available in electronic version. Access restricted to campus users.

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22

Ilyas, Muhammad. "Development of nano-graphene cementitious composites (NGCC)." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/15828.

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Ordinary Portland cement (OPC) is the main constituent of concrete works as a principal binder for aggregates and intrinsically transmits the brittleness into concrete through the formation of hydration crystals in the cement microstructure. A number of nano cementitious composites were developed in recent years to offset the brittleness with newly discovered nanomaterials and the most prevalent among those is the graphene oxide (GO). The main objective of this PhD research work is to develop nano graphene cementitious composites (NGCC) using low cost, two dimensional (2D) graphene nanoplatele

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23

Li, L., Q. Zheng, Z. Li, Ashraf F. Ashour, and B. Han. "Bacterial technology-enabled cementitious composites: A review." Elsevier, 2019. http://hdl.handle.net/10454/17127.

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Yes<br>Cementitious composites are generally brittle and develop considerable tension cracks, resulting in corrosion of steel reinforcement and compromising structural durability. With careful selection and treatment, some kinds of bacteria are able to precipitate calcium carbonate and ‘heal’ cracks in cementitious composites through their metabolism, namely bacterial activity. It is envisioned that the bacterial technology-enabled cementitious composites could have great potential for engineering applications such as surface treatment, crack repair and self-healing construction material. This

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24

Wiberg, Anders. "Strengthening of concrete beams using cementitious carbon fibre composites." Doctoral thesis, KTH, Civil and Architectural Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3582.

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<p>The research described in this thesis deals with the use ofcement-based carbon fibre reinforced composites forstrengthening of existing structural concrete.</p><p>There is a large world-wide need for simple and reliablemethods to repair and strengthen aging infrastructure andbuildings. The use of cementitious fi- bre composites offersseveral advantages over the existing methods. No other work onstrengthening of structural concrete with cementitiouscomposites reinforced with continuous high strength fibres wasidentified when the present work started in 1998. At presenttime, 2003, it still is

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25

CAMPELLO, EDUARDO DE FIGUEIREDO. "FATIGUE BEHAVIOR OF CEMENTITIOUS COMPOSITES REINFORCED BY BAMBOO PULP." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2006. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=10091@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>A utilização de materiais de construção civil a base de cimento reforçado com fibras vem aumentando rapidamente nos últimos anos. No Brasil um vasto programa experimental para avaliar o comportamento mecânico desses materiais através de ensaios de flexão monotônicos e de compressão, vem sendo desenvolvidos na PUC/RIO desde 1979. Este trabalho procura dar continuidade a essa linha de pesquisa, sendo o primeiro a estudar o comportamento em fadiga de compósitos cimentícios reforçados com polpa de bambu, através de curvas de v

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Chuang, Eugene (Eugene Yu) 1975. "Ductility enhancement of high performance cementitious composites and structures." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/33272.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2002.<br>Includes bibliographical references (p. 280-287).<br>High performance cementitious composites (HP2C) are a new generation of fiber reinforced cementitious composites (FRCC) with substantial improvements in mechanical behavior. The most important development in these HP2C materials may be the nearly elasto-plastic ductile behavior, which allows safe exploitation of the tensile and shear capacity in structural elements. This thesis presents a comprehensive investigation into the ductili

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27

Chin, Chee Seong Chin. "Experimental and computational analysis of fibre reinforced cementitious composites." Thesis, Swansea University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.585523.

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A significant amount of research has been carried out on the material and structural characteristics of fibre reinforced concrete (FRC). Chapter 1 presents a literature survey of the historical background and development of FRC. New experimental data on the direct tensile, cylinder splitting, flexural, and cube crushing strengths of both plain and fibrous concretes is provided in Chapter 2. An analytical formula for predicting the direct tensile strength of FRC has also been derived. Chapter 3 comprises two tension softening models (i.e. TSM and EMIS models) for simulating the complete pre-cra

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Rajayogan, Vinod Engineering &amp Information Technology Australian Defence Force Academy UNSW. "Autogenous shrinkage in cementitious systems." Awarded by:University of New South Wales - Australian Defence Force Academy. Engineering & Information Technology, 2009. http://handle.unsw.edu.au/1959.4/44250.

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Autogenous shrinkage is of concern in high performance concrete mixtures, when specific properties like strength and durability are enhanced. Factors like low watercement ratio, low porosity and increased hydration kinetics which are associated with high performance concrete mixtures are also responsible for the development of autogenous shrinkage. With about two decades of research into autogenous shrinkage, uncertainties still exist with testing procedure, effect of supplementary cementitious materials, modelling and prediction of autogenous shrinkage. The primary focus of this study

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Koutný, Ondřej. "Balisticky odolné betony." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-408058.

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Doctoral thesis „Ballistic-proof concretes“ deals with description, design and development of material based on ultra-high performance fibre reinforced cementitious composite with increased ballistic resistance i.e. increased resistance against high-strain rate dynamic loading induced by interaction of high-velocity moving objects. High mechanical properties, essential for such a material, are reached especially by maximal reduction of water-to-binder coefficient using high-range water reducing agents, high-strength aggregates and dense structure by precise selection and dosage of raw material

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Vieira, Mylene de Melo. "Assessment of chloride corrosion in steel fibre reinforced cementitious composites." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/663458.

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High performance steel fibre reinforced cementitious composites (HPSFRCCs) show enhanced structural performance and durability. The improved properties favour its use in agressive conditions (such as marine environment) prone to corrosion. Despite the remarkable advances in the knowledge about corrosion of conventional reinforced concrete structures, questions still remain about its effects on the durability of HPSFRCC. The governing mechanisms of corrosion, the presence of cracks, the high steel fibre content, and the long-term chloride exposure still need to be properly evaluated. Given the

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Sarandily, A. "High strength autoclaved cementitious matrices and steel fibre reinforced composites." Thesis, University of Salford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374519.

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32

BRESCANSIN, JANAINA. "FRACTURE BEHAVIOR OF CEMENTITIOUS MATRIX COMPOSITES REINFORCED BY BAMBOO PULP." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=3720@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>O uso de todos os tipos de amianto na construção civil tem diminuído drasticamente devido a problemas sérios de saúde associados a sua manipulação. De fato é previsto banir totalmente o seu uso, dentro de um curto espaço de tempo, nos países desenvolvidos bem como nos em desenvolvimento. Na necessidade de se encontrar um substituto adequado para o amianto, tem-se pesquisado compósitos de argamassa reforçada com fibras vegetais e polpas celulósicas. Devido ao processo de polpação, que remove as impurezas não celulósicas, co

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Errico, Carmine. "Determination of the influence of SRG anchors on the bond behavior of SRG/FRCM strips bonded to a quasi-brittle substrate." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.

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The use of FRCM composites (Fiber Reinforced Cementitious Matrix) is becoming more and more widespread. The inorganic matrix guarantees many advantages, especially when dealing with masonry substrates, including a good compatibility from both a physical and a chemical point of view and the lower sensitivity to debonding phenomena at the interface. Compared to FRP composites, which presents many data in the literature, FRCM composites must be studied in detail and research in this field has only begun in recent years. This work deals with an important problem: the realization of an anchorage s

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SALES, ANGELA TERESA COSTA. "SHRINKAGE, CREEP AND FRACTURE OF CEMENTITIOUS COMPOSITES REINFORCED WITH BAMBOO PULP." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2006. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8663@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>A aplicação de compósitos cimentícios usando fibras vegetais, em substituição a fibras de asbestos, é uma realidade em indústrias de fibrocimento em vários países do mundo, pois, apesar das boas propriedades mecânicas e durabilidade, a utilização de asbestos acarreta problemas de insalubridade. Fibras vegetais, pela disponibilidade e adequação à preservação ambiental, apresentam vantagens sobre fibras sintéticas. O bambu é excelente fornecedor de fibras, pelo rápido crescimento, baixo custo e qualidade das fibras. Usando-se

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Bazkiani, Saeed Pourfalah. "Out-of-plane retrofitting of masonry wall using engineered cementitious composites." Thesis, Heriot-Watt University, 2017. http://hdl.handle.net/10399/3299.

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The contribution of infill masonry walls to the overall behaviour of frame structures has been acknowledged through numerous published experimental and numerical investigations. Both the in-plane and out-of-plane response of such walls have a significant effect on the overall structural performance of frames and can be subjected to a range of in-plane and out-of-plane actions (e.g. wind, earthquakes, impact and blast loads) characterised by different time-histories, loading-frequencies and intensities. Infill walls are particularly vulnerable to the application of loads in the out-of-plain dir

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De, Beer M. "Behaviour of cementitious subbase layers in bitumen base structures." Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-08042009-115309/.

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Butler, Marko, Simone Hempel, and Viktor Mechtcherine. "Zeitliche Entwicklung des Verbundes von AR-Glas- und Kohlenstofffaser- Multifilamentgarnen in zementgebundenen Matrices." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244045698955-31655.

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Mit zunehmendem Alter zeigt das Verbundverhalten von Multifilamentgarnen aus alkaliresistentem Glas (AR-Glas) oder Kohlenstoff in Abhängigkeit von der Zusammensetzung der zementgebundenen Matrix eine sehr unterschiedliche Entwicklung. Während bei AR-Glas teilweise drastische Verluste des Leistungsvermögens zu verzeichnen sind, treten diese bei Kohlefasern nicht auf. Zur Untersuchung der Phänomene wurden beidseitige Garnauszugversuche durchgeführt und die Interphase zwischen Filamenten und Matrix im Rasterelektronenmikroskop (ESEM) untersucht. Die unterschiedlichen mechanischen Eigenschaften st

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Abdel-Monem, Ahmed El-Badawy Sayed. "The strength and fracture characteristics of autoclaved high-volume fraction steel-fibre reinforced cementitious composites." Thesis, University of Salford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280744.

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39

Carvalho, Milene. "Inclusão de compósitos cimentícios em blocos estruturais cerâmicos com foco em conforto térmico." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/170229.

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Materiais aplicados na construção civil são importantes para fornecer segurança e conforto às pessoas. Quanto mais adequadas as propriedades térmicas, menos energia é necessária para aquecer ou resfriar uma área construída. A NBR 15575:2013 - Desempenho de Edificações Habitacionais, padronizou desempenhos térmicos para construções. Os blocos estruturais cerâmicos atendem o padrão mínimo, porém acredita-se que seu desempenho possa ser melhorado utilizando materiais de características isolantes dentro de seus furos verticais. Assim, o objetivo deste trabalho é investigar compósitos de matriz cim

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França, Marylinda Santos de. "Rheological behavior of engineered cementitions composites reinforced with PVA fibers." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-03102018-140459/.

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The rheological behavior analysis of Engineered Cementitious Composites (ECC) is key to understand how the different preparation techniques affect the composite mechanical performance. However, the rheological assessment of reinforced materials becomes more complex since fibers usually cause flow disturbances not found in nonreinforced cementitious materials. Besides that, simple workability measurement techniques are not able to fully understand the composite behavior in the fresh state creating the need for more precise techniques to be employed. The main objectives of this study were to eva

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Mora, D. F. (Diego Fernando). "Multifield-based modeling of material failure in high performance reinforced cementitious composites." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/117529.

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Cementitious materials such as mortar or concrete are brittle and have an inherent weakness in resisting tensile stresses. The addition of discontinuous fibers to such matrices leads to a dramatic improvement in their toughness and remedies their deficiencies. It is generally agreed that the fibers contribute primarily to the post-cracking response of the composite by bridging the cracks and providing resistance to crack opening. On the other hand, the multifield theory is a mathematical tool able to describe materials which contain a complex substructure. This substructure is endowed with it

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Douglas, Kyle Scott. "Rate-dependence in high performance fiber-reinforced cementitious composites for seismic retrofits /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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Abdallah, Sadoon Mushrif. "Bonding mechanisms and strength of hooked-end steel fibre reinforced cementitious composites." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/15827.

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Concrete is a strong material as to its compressive strength. However, it is a material with a low tensile and shear strength, and brittleness at failure. Concrete has to be reinforced with appropriate materials. Steel fibre is one of the most common materials currently being used to develop reinforced concrete, which may replace partially or completely conventional steel reinforcement. Successful reinforcement of concrete composite is closely related to the bond characteristics between the reinforcing fibre and matrix. The effective utilisation of steel fibre reinforced concrete (SFRC) requir

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Sanjeevan, Poologanathan. "The effects of geometrical microstructure of cementitious composites on laser cleaning process." Thesis, Glasgow Caledonian University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443167.

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Pretorius, Jan Hendrik Christoffel. "The influence of PFA particle size on the workability of cementitious pastes." Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-07082005-135427/.

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Arquez, Ana Paula. "Aplicação de laminado de polímero reforçado com fibras de carbono (PRFC) inserido em substrato de microconcreto com fibras de aço para reforço à flexão de vigas de concreto armado." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-29062010-114146/.

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O reforço de elementos estruturais de concreto armado com uso de polímeros reforçados com fibras de carbono (PRFC) está cada vez mais conhecido, seguro e acessível. Em todo o mundo, a aplicação do PRFC vem sendo estudada sob diversas técnicas. Características como elevada resistência à tração e à corrosão, baixo peso, facilidade e rapidez de aplicação são os principais fatores para essa disseminação. Em particular, a técnica aqui estudada é conhecida como Near Surface Mounted (NSM), que consiste na inserção de laminados de PRFC em entalhes realizados no concreto de cobrimento de elementos de c

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Garcez, Estela Oliari. "Investigação do comportamento de Engineered Cementitious Composites reforçados com fibras de polipropileno como material para recapeamento de pavimentos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/28642.

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Uma parcela substancial das rodovias do país apresenta processos de deterioração graves de seus pavimentos, fato que acarreta sérios impactos econômicos, sociais e ambientais, resultando em aumento do consumo de combustível, dos gastos com manutenção dos veículos, da frequência de engarrafamentos e do tempo gasto em deslocamentos. A utilização de recapeamentos ou overlays de concreto tem demonstrado ser uma alternativa sustentável e econômica para a reabilitação de pavimentos. No entanto, em muitos casos, os overlays de concreto não tem conseguido prevenir a ocorrência de fissuração por reflex

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Jeřábek, Jakub [Verfasser]. "Numerical framework for modeling of cementitious composites at the meso-scale / Jakub Jerabek." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2011. http://d-nb.info/1018218130/34.

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Quartarone, Giovanni. "Confinement of masonry columns with Steel Fiber Reinforced Cementitious Matrix (S-FRCM) composites." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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The rehabilitation of existing masonry elements through jacketing of columns using composite materials is becoming a remarkable technique in several applications that aim to increase the strength of existing masonry building. An experimental campaign was conducted with Steel- and -Basalt Fiber Reinforced Cementitious Matrix (FRCM) systems, in order to test new products that might increase the advantages in terms of good adhesion to masonry substrate, breathability of the system, efficiency in aggressive environments, ease of installation and reversibility, which are essential for the preserva

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SOUZA, LETICIA OLIVEIRA DE. "CRACKING MECHANISMS AND AUTOGENOUS HEALING CAPABILITY OF CEMENTITIOUS COMPOSITES REINFORCED WITH CURAUA FABRIC." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=33404@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>O presente trabalho tem como objetivo o estudo do comportamento mecânico, os mecanismos de fissuração e a autocicatrização de compósitos cimentícios reforçados com fibras de curauá. Desenvolveram-se três tipos de compósitos distintos, cada um reforçado com uma, três ou cinco camadas de tecido unidirecional de curauá. O comportamento mecânico foi avaliado por meio de ensaios de tração direta e flexão a quatro pontos. Estudaram-se os mecanismos de fissuração por meio de fotograf

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