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Dissertations / Theses on the topic 'Mechanical and rheological properties'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Kulamarva, Arun. "Rheological and thermal properties of sorghum dough." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98740.

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Sorghum is a gluten free cereal and forms the staple diet of a majority of the populations living in the semi-arid tropics dough. It is usually consumed in the form of bread made from the grain flour. Dough made with sorghum flour has poor viscoelastic properties compared to wheat dough and mechanical methods for production of sorghum roti are scarce. This study was conducted to elucidate the rheological and thermal properties of sorghum dough to establish its behavior. The temperature and amount of water used for preparation of the dough and the composition of the flour were varied. Wheat, so

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2

Cavdar, Seda. "Effect Of Different Compositions On Rheological And Mechanical Properties Of Epdm Rubber." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608968/index.pdf.

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In this work, EPDM rubber was compounded with increasing amount of filler (FEF N 550 type carbon black), process oil (saturated mineral oil), vulcanizing agent [di (t-butylperoxy) diisopropyl benzene, i.e., BBPIB] and diene [5-ethylidenebicyclo(2.2.1)-hept-2-ene, i.e., ENB] in order to investigate mechanical and rheological properties. Effect of Increasing amount of filler was investigated by using FEF N 550 type carbon black in 35, 70, 87.5, 105 phr. Decrease in scorch times of vulcanization reactions, ts2 (25, 21, 19, and 18 s, respectively) and slight increase in rate constants for vulcani

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3

Pai, Anand S. "MICRO-RHEOLOGICAL ASSESSMENT OF NEUTROPHIL MECHANICAL PROPERTIES FOLLOWING ADHESION IN A MODEL CAPILLARY." Ohio University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1156386677.

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4

Qadeer, Muhammad Irfan. "SmCo for polymer bonded magnets : Corrosion, silanization, rheological, mechanical and magnetic properties." Doctoral thesis, KTH, Keramteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-106809.

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This thesis presents the study of organofunctional alkoxysilane coatings to prevent high temperature oxidation of Sm-Co powders. Sm-Co are important permanent magnetic alloys, owing to their high Curie temperature and large values of magnetocrystalline anisotropy. They possess stable magnetic properties in the temperature range -40 to 120 °C which makes them very attractive candidates for automobile’s electric motors. However, the environmental conditions for such applications are a sum of high temperatures, humidity, fuels and salts which provide perfect breeding ground for corrosion. In this

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5

Mariano, Marcos. "Applications of cellulose nanocrystals : thermal, rheological and mechanical properties of new materials." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI046/document.

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Malgré ces propriétés intéressantes et l'abondance du matériau brut dont on peut les extraire, les applications des CNC pour des produits commerciaux restent limitées en raison des limitations liées à l’utilisation de procédés industriels. En effet, les matériaux produits à base de CNC sont généralement préparés par la technique de coulée/évaporation. Ce procédé permet de bien contrôler les propriétés comme l’humidité, la dispersion des particules et aussi d’assurer la formation d'un réseau tridimensionnel des particules. Cependant, ce procédé n'est pas facilement transposable à l'industrie. U

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6

Griffin, James Martin. "Novel microgel suspensions : rheological, mechanical and adhesion properties and their filtration behaviour." Thesis, Imperial College London, 2007. http://hdl.handle.net/10044/1/11330.

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Gernaat, Christopher Ronald. "Correlation between rheological and mechanical properties in a low-temperature cure prepreg composite." Thesis, Wichita State University, 2008. http://hdl.handle.net/10057/2090.

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With an ever growing fleet of commercial airplanes utilizing composite structures, it is increasingly important to develop cost-effective and robust repair procedures. Issues invariably occur during on-site repair which casts doubt on the structural suitability of the part. This makes the ability to quantify the relationship between dwell temperature, cure state, and mechanical properties extremely important. Curing temperatures play a vital role in the difficulty of repairs. Lower cure temperatures mean lower cost, less possibility of damage to surrounding material, and therefore, the potenti

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8

Nagalakshmaiah, Malladi. "Melt processing of cellulose nanocrystals : thermal, mechanical and rheological properties of polymer nanocomposites." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI043/document.

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La faible stabilité thermique et les problèmes d’agrégations irréversibles limitent l’utilisation de nanocomposites polymères à renfort cellulosique. Dans ce contexte, des CNC thermiquement stable et fortement dispersés ont été préparés par des procédés verts, basés sur des méthodes en milieu aqueux, telle que l'adsorption physique et la modification de surface. Ces deux types de CNC extrudables ont été utilisés comme renfort dans des polymères réputés hydrophobes. Les composites biosourcés à matrice polymère ainsi réalisés sont caractérisés par une amélioration du module visqueux, de la résis

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9

Gernaat, Christopher Ronald Minaie Bob. "Correlation between rheological and mechanical properties in a low-temperature cure prepreg composite." A link to full text of this thesis in SOAR, 2008. http://hdl.handle.net/10057/2090.

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Wichita State University, College of Engineering, Dept. of Mechanical Engineering<br>Copyright 2008 by Christopher Ronald Gernaat. All Rights Reserved. Includes bibliographic references (leaves 89-92).

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10

GODENZONI, CARLOTTA. "Multiscale Rheological and Mechanical characterization of Cold Mixtures." Doctoral thesis, Università Politecnica delle Marche, 2017. http://hdl.handle.net/11566/245296.

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Oggigiorno, la crescente consapevolezza sociale e politica per le questioni ambientali si sta orientando verso lo sviluppo di tecnologie a basso consumo ed emissioni. In questo contesto, tecnologie come le miscele bituminose a freddo possono rappresentare una valida alternativa ai tradizionali conglomerati bituminosi a caldo, per le pavimentazioni stradali. Inoltre, quando vengono utilizzati materiali provenienti dal riciclaggio di pavimentazioni stradali ammalorate, il consumo di aggregati vergini può essere considerevolmente ridotto. In passato, l'uso di miscele bituminose a freddo ha risco

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11

Haghnegahdar, M., and A. Alipour. "Effects of Epoxy-Polyester Hybrid and Nanoclay on Morphology, Rheological and Mechanical Properties of Styrene-Butadiene Rubber." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35065.

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Properties of SBR compounds filled with two kinds of filler, Epoxy-Polyester Hybrid resin(EPH) (10, 20, 30, 40 phr) and Nanoclay (Closite 15 A) (1, 3, 5, 7 phr) were studied. Microcomposite samples and nanocomposite samples were prepared by Haake internal mixer. Curing agents and additives i.e. dicumylperoxide Properties of SBR compounds filled with two kinds of filler, Epoxy-Polyester Hybrid resin(EPH) (10, 20, 30, 40 phr) and Nanoclay (Closite 15 A) (1, 3, 5, 7 phr) were studied. Microcomposite samples and nanocomposite samples were prepared by Haake internal mixer. Curing agents and

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12

Soltani, Seyed Rouhallah Alavi. "Thermal, rheological, and mechanical properties of a polymer composite cured at staged cure cycles." Diss., Wichita State University, 2010. http://hdl.handle.net/10057/3289.

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Thermal, rheological, and mechanical properties of a polymer composite cured at different one-stage and two-stage cure cycles were studied in this dissertation. A commercial carbon-fiber prepreg, Cycom 977-2 UD, was used. This curing-toughened epoxy resin prepreg is formulated for autoclave or press molding. An encapsulated sample rheometer (ESR) was used to obtain its viscoelastic properties, including complex viscosity, gel time, and minimum viscosity time, as well as glass transition temperature (Tg) and pressure window time for onestage and two-stage cure cycles. A differential scanning ca

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13

Alavi-Soltani, Seyed R. "Thermal, rheological, and mechanical properties of a polymer composite cured at staged cure cycles." Diss., Wichita State University, 2010. http://hdl.handle.net/10057/3289.

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Thermal, rheological, and mechanical properties of a polymer composite cured at different one-stage and two-stage cure cycles were studied in this dissertation. A commercial carbon-fiber prepreg, Cycom 977-2 UD, was used. This curing-toughened epoxy resin prepreg is formulated for autoclave or press molding. An encapsulated sample rheometer (ESR) was used to obtain its viscoelastic properties, including complex viscosity, gel time, and minimum viscosity time, as well as glass transition temperature (Tg) and pressure window time for onestage and two-stage cure cycles. A differential scanning ca

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14

Balestra, Federica <1979&gt. "Empirical and fundamental mechanical tests in the evaluation of dough and bread rheological properties." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1941/1/Federica_Balestra_tesi.pdf.

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Bread dough and particularly wheat dough, due to its viscoelastic behaviour, is probably the most dynamic and complicated rheological system and its characteristics are very important since they highly affect final products’ textural and sensorial properties. The study of dough rheology has been a very challenging task for many researchers since it can provide numerous information about dough formulation, structure and processing. This explains why dough rheology has been a matter of investigation for several decades. In this research rheological assessment of doughs and breads was performed

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15

Balestra, Federica <1979&gt. "Empirical and fundamental mechanical tests in the evaluation of dough and bread rheological properties." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1941/.

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Bread dough and particularly wheat dough, due to its viscoelastic behaviour, is probably the most dynamic and complicated rheological system and its characteristics are very important since they highly affect final products’ textural and sensorial properties. The study of dough rheology has been a very challenging task for many researchers since it can provide numerous information about dough formulation, structure and processing. This explains why dough rheology has been a matter of investigation for several decades. In this research rheological assessment of doughs and breads was performed

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16

Overton, Bob James. "The effects of microstructure and styrene content on the rheological properties of styrene-butadiene random copolymers." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/10196.

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17

Ratnayake, Upul Nishantha. "Polypropylene-clay nanocomposites : effects of incorporating short chain amide molecules on rheological and mechanical properties." Thesis, Loughborough University, 2006. https://dspace.lboro.ac.uk/2134/11600.

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The influence of low molecular weight additives containing polar groups and modified polyolefin-based compatibilisers on polypropylene (PP)-clay nanocomposites (PPCN) has been studied, in terms of intercalation and degree of exfoliation achievable by melt state mixing processes. PPCN were prepared by melt mixing of two commercial pp homopolymers with organically modified clay (OMMT) in the presence of maleic anhydride grafted pp (PP-MA). X-ray diffraction (XRD) analysis shows that the interlayer spacing of clay increases dramatically, whilst transmission electron microscopy (TEM) results show

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18

Hampapa, Břetislav. "Reakce HDPE v tavenině iniciované peroxidy." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216682.

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The thesis deals with HDPE modification by crosslinking. In the theoretical part, data available in the literature were reviewed. Modifications of the selected HDPE copolymer grade were carried out in a kneading device Brabender using 25 ml chamber size. After having optimized process conditions, there were performed a series of experiments in dependence on concentration of the initiator. Reological properties of polymer samples were investigated by melt flow indexes measured under different conditions. Changes in crystallinity and melting temperatures were evaluated from DSC heat flow measure

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19

Stimilli, Arianna. "Advanced Experimental Study on Rheological and Mechanical Properties of Hot Recycled Bituminous Materials with High RAP Content." Doctoral thesis, Università Politecnica delle Marche, 2015. http://hdl.handle.net/11566/242917.

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Oggigiorno, la produzione di conglomerati con elevate percentuali di fresato (RAP) rappresenta una delle maggiori sfide da affrontare. L’inclusione di RAP garantisce vantaggi in termini ambientali ed economici, soprattutto tramite riciclaggio a caldo, tecnica che permette il simultaneo sfruttamento della fase bituminosa e lapidea di una miscela. Attualmente i quantitativi di RAP comunemente utilizzati sono limitati data la mancanza di esperienza e di prove scientifiche che dimostrino la possibilità di includere fresato senza penalizzare le prestazioni della pavimentazione. L’attività di dotto

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20

Moreno, Timothy G. "Computational Bone Mechanics Modeling with Frequency Dependent Rheological Properties and Crosslinking." DigitalCommons@CalPoly, 2021. https://digitalcommons.calpoly.edu/theses/2296.

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Bone is a largely bipartite viscoelastic composite. Its mechanical behavior is determined by strain rate and the relative proportions of its principal constituent elements, hydroxyapatite and collagen, but is also largely dictated by their geometry and topology. Collagen fibrils include many segments of tropocollagen in staggered, parallel sequences. The physical staggering of this tropocollagen allows for gaps known as hole-zones, which serve as nucleation points for apatite mineral. The distance between adjacent repeat units of tropocollagen is known as D-Spacing and can be measured by Atomi

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21

Hao, Xiaoqiong [Verfasser], and Dirk W. [Akademischer Betreuer] Schubert. "Rheological and thermo-mechanical properties of PLA-based miscible blends and composites / Xiaoqiong Hao. Gutachter: Dirk W. Schubert." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2016. http://d-nb.info/109588557X/34.

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22

Bhatia, Rupesh. "Effect of molecular mass, concentration and temperature on the rheological properties of non-newtonian aqueous polymeric solutions." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1313765879.

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23

Bin, Raja-Nazri Raja Nazrul Hakim. "Preparation and characterization of nanocomposites based on polylactide manufactured by reactive extrusion-calendering : thermal, rheological, mechanical and fracture properties." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/620248.

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PLA nanocomposites sheets that is rnodified with multi-functional epoxide reactive agent (Joncryi4300F, BASF, Germany) were manufacturad using reactive extrusion in a pilot plant. A commercial grade of PLA (PLA 40320, NatureWorks, Belgium) was reinforced with either a commercial grade of organornodified rnontrnorillonite clay (o-MMT) (Cioisite 308, Southem Clay Products, USA) or three comrnercial grades of fumed silica (nano-Si02){(CAB-0-SIL EH5,), (epoxy rnodified silica 6851HN and aminopropyl modified silica 6852HN, Skyspring Nanomaterials lnc., USA)}. PLA and reactively rnodified PLA nanoco

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24

Wagner, Caroline (Caroline Elizabeth). "An experimental and theoretical investigation of the rheological properties and degradation of mucin solutions : (or why saliva becomes watery when removed from your mouth)." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100349.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 111-118).<br>The use of biological fluids such as saliva and cervical mucus as diagnostics for measurements of health status is becoming increasingly popular in the fields of biology and medicine, particularly given the non-invasiveness and ease of obtaining such fluids [39, 78]. In general, these biological fluids are polymeric, and as a result tend to be viscoelastic. However, as a result of protease and enzyma

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25

Vinnars, Jacob, and Johan Vinnars. "Correlations Between Rheological Properties and Jetting Results in Solder Paste Jetting." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-324700.

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The purpose of this project has been to investigate potential correlations between rheological properties and jetting quality of solder paste. The project was carried out for Mycronic AB. Data from previously obtained measurements for both rheological properties and jetting quality were used in the analysis. We were only able to suggest preliminary correlations. One reason for this was that the jetting data was not designed for correlation work. It was performed to set parameters for new fluids. The data was inconsistent and difficult to work with in a correlation studie. However, the work led

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26

Al-Fouzan, Abdulrahman M. "Polyethylene Terephthalate / clay nanocomposites. Compounding, fabrication and characterisation of the thermal, rheological, barrier and mechanical properties of Polyethylene Terephthalate / clay nanocomposites." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5283.

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Polyethylene Terephthalate (PET) is one of the most important polymers in use today for packaging due to its outstanding properties. The usage of PET has grown at the highest rate compared with other plastic packaging over the last 20 years, and it is anticipated that the increase in global demand will be around 6% in the 2010-2015 period. The rheological behaviour, thermal properties, tensile modulus, permeability properties and degradation phenomena of PET/clay nanocomposites have been investigated in this project. An overall, important finding is that incorporation of nanoclays in PET gives

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27

McShane, P. M. "Optimization of the morphological, mechanical and rheological properties of novel polypropylene/ethylene-octene copolymer blends for automotive fuel line protection applications." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268405.

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28

Bhatia, Amita, and abhatia78@yahoo com. "Experimental Study of Structure and Barrier Properties of Biodegradable Nanocomposites." RMIT University. Civil, Environmental and Chemical Engineering, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20090304.143545.

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As nanocomposites provide considerable improvements in material properties, scientists and engineers are focussing on biodegradable nanocomposites having superior material properties as well as degradability. This thesis has investigated the properties of biodegradable nanocomposites of the aliphatic thermoplastic polyester, poly (lactide acid) (PLA) and the synthetic biodegradable polyester, poly (butylene succinate) (PBS). To enhance the properties of this blend, nanometer-sized clay particles, have been added to produce tertiary nanocomposite. High aspect ratio and surface area of clay prov

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29

Wang, Yung-Chieh (Becky). "Effects of physical properties and rheological characteristics on critical shear stress of fine sediments." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/51723.

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During high flow rates, the acceleration of flow and turbulence around bridge foundations lead to scouring, defined as the removal of bed sediments. Due to the interparticle physico-chemical forces of clay particles, erodibility and transport mechanisms for fine sediments are different from those for coarse sediments, and the capability to predict the erosion resistance of fine sediments is still in question. In this study, silt-clay soil mixtures with different kaolin contents were prepared by mixing ground silica and Georgia kaolin with tap water. Geotechnical tests were carried out to obtai

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Mahiuddin, Md. "Mechanical characterizing and drying simulation of plant-based food materials: The fractional model approach." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/204285/1/Md_Mahiuddin_Thesis.pdf.

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Food processing industry is one of the largest manufacturing sectors in Australia. Drying is one of the major processes in food industry that reduces food waste by increasing shelf-life. However, drying is highly energy-intensive lengthy process and results in significant quality deterioration. To retain the fresh like quality and reduce the energy consumption, a comprehensive understanding of transport process during drying is essential. To overcome the limitations of current mathematical models, this study introduced new fractional differential models for mechanical characterising and drying

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31

Cechin, Gabriela. "Análise de fatores que exercem influência na argamassa e no processo de projeção em revestimento de paredes." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/170970.

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A argamassa de revestimento é um material largamente utilizado na construção civil. Após a década de 90, as construtoras necessitaram introduzir inovação no processo construtivo, como um diferencial de mercado, a fim de aumentar a produtividade e qualidade, juntamente à redução do custo final. Em consequência disso, ao longo do tempo, houve a evolução do subsistema de revestimento, apresentando como maior mudança a substituição da aplicação manual por projeção mecânica. Acredita-se que, devido ao fato desta tecnologia propiciar a redução da interferência da mão de obra e possibilitar o fluxo c

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Sanchez, José Luiz Leite. "Avaliação das propriedades mecânicas e reológicas de composições de borracha nitrílica vulcanizadas com resina fenólica." Universidade do Estado do Rio de Janeiro, 2008. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=1848.

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Neste trabalho de Dissertação de Tese, composições do copolímero de butadieno-acrilonitrila (NBR) foram vulcanizadas utilizando como agentes de vulcanização, a resina fenólica e o enxofre, com diferentes proporções de resina fenólica e uma única proporção de enxofre. O sistema ativador foi composto por policloropreno e óxido de zinco para as composições com resina fenólica, enquanto que por ácido esteárico e óxido de zinco para a composição com enxofre. Os materiais foram vulcanizados em uma temperatura de 190C. Foi avaliada a influência da variação dos componentes das composições sobre as pro

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Ezat, Gulstan S. "The influence of multi-walled carbon nanotubes on the properties of polypropylene nanocomposite : the enhancement of dispersion and alignment of multiwalled carbon nanotube in polypropylene nanocomposite and its effect on the mechanical, thermal, rheological and electrical properties." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5703.

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Carbon nanotubes are known as ideal fillers for polymer systems; the main advantage of carbon nanotubes over other nano-reinforcing particles is the combination of superior strength and stiffness with large aspect ratio. Carbon nanotubes may improve the mechanical, electrical and thermal properties of polymers, but to realise their potential in polymer systems uniform dispersion, strong interfacial adhesion and alignment of nanotubes within the polymer matrix are necessary. These properties are not easy to achieve and they are key challenges in producing CNT/Polymer system. This research was c

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Borchani, Karama. "Développement d'un composite à base d'un polymère biodégradable et de fibres extraites de la plante d'Alfa." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSES010/document.

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Cette étude constitue une contribution à la recherche de nouveau matériau composite originaire des ressources naturelles végétales. Elle vise alors à l’exploitation des fibres naturelles extraites de la plante d’Alfa avec une matrice biopolymère thermoplastique de type Mater-Bi® afin d’élaborer des biocomposites. Trois types de fibres courtes extraites de la plante d’Alfa sont préparés ; non traitées et traitées par un traitement alcalin à 1 et 5%. Les diverses techniques utilisées pour la caractérisation des fibres ont révélé une augmentation de la rugosité, du taux de cellulose, de l’indice

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Isreb, Mohammad. "Thermal and rheological approaches for the systematic enhancement of pharmaceutical polymeric coating formulations : effects of additives on glass transition temperature, dynamic mechanical properties and coating performance in aqueous and solvent-free coating process using DSC, shear rheometry, dissolution, light profilometry and dynamic mechanical analysis." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5527.

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Additives, incorporated in film coating formulations, and their process parameters are generally selected using a trial-and-error approach. However, coating problems and defects, especially those associated with aqueous coating systems, indicate the necessity of embracing a quality-by-design approach to identify the optimum coating parameters. In this study, the feasibility of using thermal and rheological measurements to help evaluate and design novel coating formulations has been investigated. Hydroxypropyl methylcellulose acetate succinate (HPMCAS), an enteric coating polymer, was used as t

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Gril, Joseph. "Une modelisation du comportement hygro-rheologique du bois a partir de sa microstructure." Paris 6, 1988. http://www.theses.fr/1988PA066271.

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L'etude concerne la prise en compte des variations d'humidite dans la representation du comportement mecanique du bois dans la direction des fibres. On rapelle des notions de base sur le bois, puis on analyse des resultats experimentaux sur le couplage hygromecanique. On propose ensuite des modeles uniaxiaux de la mecanosorption, basee sur l'ultrastructure de la matiere lignocellulosique. L'action de l'eau est modelisee de deux manieres. On prend enfin explicitement en compte la structure tridimensionnelle et l'orientation du reseau microfibrillaire. On propose une interpretation des contraint

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Pereira, Thiago Pastre [UNESP]. "Estudo do concreto de alto desempenho com adição de borracha." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/147122.

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Pereira, Thiago Pastre. "Estudo do concreto de alto desempenho com adição de borracha /." Ilha Solteira, 2016. http://hdl.handle.net/11449/147122.

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Orientador: Maria da Consolação Fonseca de Albuquerque<br>Resumo: A inserção de resíduos de borracha de pneu no concreto, embora traga melhoras em propriedades acústicas, térmicas e redução da fadiga e da vibração no concreto, tem como consequência negativa a queda da resistência à tração e à compressão. Tendo em vista tal problema, admitiu-se uma mistura de Concreto de Alto Desempenho (CAD) como referência e a partir desta, substituíram-se diferentes granulometrias de areia por resíduos de borracha, em volume. Ao encontrar a melhor resistência respectiva ao tamanho dos grãos de resíduos, aume

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Santos, Cristiane Ramos dos. "Propriedades reológicas e mecânicas de compósitos e nanocompósitos poliamida 12 e montmorilonita." Pós-Graduação em Ciência e Engenharia de Materiais, 2014. https://ri.ufs.br/handle/riufs/3516.

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This work studied the rheological and mechanical properties of polyamide 12 modified montmorillonite clays and bentonita (the organo-modified commercial montmorillonite and a bentonite modified by various routes. Two polyamides 12 were used for the polyamide matrix, a virgin and another reprocessed. The polyamide 12 reprocessed was derived from tailings lines of fluid transport in automotive vehicles. Ten different compositions were prepared in single-screw extruder, and subsequently molded test specimens by injection. For formulations reprocessed polyamide 12, were added 5 to 7 wt.% of a comm

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Alhaik, Ghaith. "Influence de l'amidon sur les propriétés rhéologiques, mécaniques et multiphysiques de formulations terre-paille." Thesis, Artois, 2017. http://www.theses.fr/2017ARTO0205/document.

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Les techniques de l'éco-construction répondent au besoin de réduire l'empreinte environnementale du secteur de la construction grâce à l'utilisation de ressources de proximité (filières courtes), sans transformation énergivore et grâce à la capacité de régulation thermo-hydrique des parois. La terre crue seule ou associée à de la paille fait office de symbole. Mais ses caractéristiques variables selon son origine, le long temps de séchage, et de faibles résistances mécaniques sont des freins à son utilisation. L'association de la terre avec des adjuvants biosourcés, tel que l'amidon déjà utili

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Muracciole, Jean-Michel. "Influence de la vitesse de deformation sur le comportement du polymethacrylate de methyle a la temperature ambiante." Poitiers, 1987. http://www.theses.fr/1987POIT2202.

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Realisation d'un dispositif informatique pour mesurer et enregistrer les deformations du pmma selon trois directions perpendiculaires lors d'essais de traction a grande vitesse. Etude des cartes de deformations

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42

Modi, Sunny J. "Assessing the Feasibility of Poly-(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and Poly-(lactic acid) for Potential Food Packaging Applications." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1268921056.

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43

FIGUEIRÊDO, NETO Acácio. "Cinética das propriedades mecânicas durante a maturação dos frutos e avaliação da qualidade fisiológica das sementes de abóbora "Jacarezinho"." Universidade Federal de Campina Grande, 2012. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/919.

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Submitted by Deyse Queiroz (deysequeirozz@hotmail.com) on 2018-06-11T14:17:04Z No. of bitstreams: 1 ACÁCIO FIGUEIREDO NETO - TESE PPGEA 2012..pdf: 36488715 bytes, checksum: f4cbebe212c4e906fda1a7703532628e (MD5)<br>Made available in DSpace on 2018-06-11T14:17:04Z (GMT). No. of bitstreams: 1 ACÁCIO FIGUEIREDO NETO - TESE PPGEA 2012..pdf: 36488715 bytes, checksum: f4cbebe212c4e906fda1a7703532628e (MD5) Previous issue date: 2012<br>A cultura da abóbora é de uma maneira geral um bom negócio para vários produtores que se situam no semiárido, principalmente na região do Vale do São Francisco.

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Beaumel, Christian. "Extrusion des pâtes d'argiles." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0056.

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L'industrie de la terre cuite valorise les materiaux de la terre en extrudant des pates d'argiles. Le but de cette etude est la maitrise de la mise en forme a vitesse elevee de ces pates et des defauts d'extrusion. La caracterisation des proprietes physiques et rheologiques des pates, notamment dans des conditions non consolidees et non drainees, les fait apparaitre comme des materiaux plastiques heterogenes. Les proprietes d'interface des pates sont caracterisees grace a un tribometre concu pour l'etude des frottements a vitesse elevee. Nous proposons une loi de frottement suggerant un coupla

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Jarolím, Tomáš. "Studium vlivu směsných cementů, zejména vápencových, na vlastnosti čerstvých a zatvrdlých betonů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2012. http://www.nusl.cz/ntk/nusl-225683.

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This thesis focuses on collecting all available data on mixing Portland cements and especially on Portland cements with limestone. In the experimental part are compare the rheological properities of mixing Portland cements with limestone, their compatibility with plasticizing additives, witch depends on the type of additives, dosage and time, then in experimental part they are summarized monitoring of physical-mechanical properties and volume changes of concrete.

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Manaâ, Rabah. "Étude de la ténacité des assemblages bois-colle résorcine-phénol-formol." Vandoeuvre-les-Nancy, INPL, 1995. http://www.theses.fr/1995INPL028N.

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La méthode de détermination de l'énergie de rupture GIC d'une éprouvette DCB (Double Cantilever Beam) en bois collée à la résorcine-phénol-formol, considère un bras de l'éprouvette comme une poutre élastique sur fondations viscoélastiques dont les constantes de la loi de comportement sont déterminées en réalisant des essais au viscoanalyseur. La méthode de la complaisance expérimentale établie par Sassaki a été adoptée pour déterminer l'énergie de rupture GIC. La solution du problème est d'assimiler le matériau de l'éprouvette DCB à un modèle de Zener ou le bois est considéré comme un matériau

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Escadeillas, Gilles. "Les ciments aux fillers calcaires : contribution a leur optimisation par l'etude des proprietes mecaniques et physiques des betons fillerises." Toulouse 3, 1988. http://www.theses.fr/1988TOU30053.

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Il ressort de l'etude que: les proprietes rheologiques avant prise du liant sont ameliorees par l'ajout de filler, autorisant une diminution de la teneur en eau de gachage; la reactivite de la calcite est confirmee (formation de carboaluminates, diminution de l'aureole de transition); les resistances mecaniques aux jeunes ages sont ameliorees; la fragilite (fissuration. . . ) est attenuee. On envisage l'amelioration de ces procedes par addition d'un superplastifiant

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Scott, Shane. "Rheological Properties of Protein Hydrogels." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20565.

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Certain hydrogel forming de novo proteins that utilize different crosslinking methods are studied experimentally on a rheometer. The stress reaxation modulus of CRC, a telechelic, triblock protein, is shown to be that of a stretched exponential function with a value of β ≅ 0.5. The insertion of an integrin binding domain and changes in pH within the range 6.5–8.5 are shown not to significantly affect the resulting rheological behavior. A selective chemical crosslinker is used on CRC hydrogel systems and is shown to change the rheological behavior of the system to that of a combination of a ch

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Yeong, Shoot Klan. "Rheological properties of lubricating grease." Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251581.

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Gallat, Stephanie. "Rheological properties of reworked butters." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259761.

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