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Dissertations / Theses on the topic 'Cement products'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Ding, Jian. "Conversion prevention in high alumina cement products." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/9683.

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Mechanisms of stratlingite (C$\rm\sb2ASH\sb8)$ formation in the high alumina cement (HAC)--siliceous material--water systems were investigated. Different siliceous materials, e.g. natural zeolites, silica fume, fly ash, ground granulated blast-furnace slag, and different sodium salts, e.g. sodium silicate, sodium sulfate, etc. were employed. Reactions between CAH$\sb $ or C$\rm\sb2AH\sb8$ and dissolved silica occur. Acceleration of the silica dissolution by addition of chemical admixtures promoted the formation of stratlingite. A method for prevention of strength reduction of HAC products due

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2

Fu, Yan. "Delayed ettringite formation in Portland cement products." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/9804.

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The thesis presents the results of an extensive research program on the deterioration of Portland cement concrete due to delayed ettringite formation (DEF). The study focuses on three aspects: (i) the mechanisms of DEF; (ii) a test method to determine the DEF potential of a given cement; (iii) some preventive measures to reduce the deterioration of portland cement products due to DEF. The research work indicates that C-S-H gel will adsorb sulfate fast at high temperature resulting in quick depletion of the gypsum phase in the portland cement-water system. Sulphate absorbed at high temperature

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3

Rust, David E. "PRODUCTION OF LOW-ENERGY, 100% BY-PRODUCT CEMENT UTILIZING COAL COMBUSTION PRODUCTS." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/541.

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The ever-increasing quantity of by-products generated from burning coal in the production of electricity has brought about the need for new areas of utilization. This study examined the use of FGD gypsum and fluidized bed combustion ash along with Class F fly ash in the production of low-energy, 100% by-product cement blends. The cement blends used the advantageous properties of the by-product materials to create cementing properties rather than energy intensive clinker used in ordinary portland cement. The FGD gypsum was converted to hemihydrate which rapidly hydrated to provide the cement wi

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4

Karami, S. "Using by-product industrial materials to replace all cement in construction products." Thesis, Coventry University, 2008. http://curve.coventry.ac.uk/open/items/4c639f05-0ace-21ff-0618-3f3c423f756c/1.

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At present, cementitious binders are used extensively in the construction industry and principally in concretes. They are also used in some applications like ground improvement. In these applications the cost of the binder, typically Portland cement, accounts for a considerable proportion of the total cost of the technique. In addition to the financial cost there is also the environmental impact of quarrying and processing of raw materials to produce Portland cements. Gypsum waste, by-pass dust and fly ash by-products have been identified as the alternative sources of cementitious binder. Usin

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5

Feng, Qiu Ling. "Chemical and microstructural investigations on slag hydration products." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 1989. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59672.

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6

Vlaspouloas, Nikolaos. "Waste minimisation through sustainable magnesium oxide cement products." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512049.

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7

Shaw, Iain M. "Interactions between organic polymers and cement hydration products." Thesis, Aston University, 1989. http://publications.aston.ac.uk/14324/.

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Organic substances, particularly polymers, are finding increasing use in modifying the properties of cements and concrete. Although a significant amount of research has been conducted into the modification of the mechanical properties of cements by polymers, little is known about the nature of the interface and interactions taking place between the two phases. This thesis addresses the problem of elucidating such interactions. Relevant literature is reviewed, covering the general use of polymers with cements, the chemistry of cements and polymers, adhesion and known interactions between polyme

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8

Arayarat, Pornthip. "Refractory products based on the pore reduced cement technique." Thesis, University of Aberdeen, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245256.

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The present study was aimed at an investigation of the use of the pore reduced cement (PRC) technique on the fabrication and properties of calcium aluminate-based refractories. Physical and chemical performances were compared with those of conventionally prepared (unpressed) refractory castables. The influence of firing on two types of calcium aluminate cements; (Ciment Fondu and Secar 80), mixed with aggregates such as firebrick and alpha-alumina, were observed. Most of the pressed samples based on Ciment Fondu cracked and melted during firing to 1250<sup>o</sup>C. Pressed samples based on Se

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9

Wang, Sanwu 1971. "Carbonation of cement-based products with pure carbon dioxide and flue gas." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100734.

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CO2 absorption behaviour of four commonly used cement based building products: cement paste, concrete block, expanded polystyrene bead (EPB) and cement-bonded cellulose fiberboard are studied. Cement products are manufactured following industry formulation and process, and carbonation curing takes place in a chamber under a pressure of 0.5 MPa, at ambient temperature, for durations of mostly 2 to 8 hours with both pure carbon dioxide gas and flue gas. The flue gas of 13.8% CO2 content is collected from a typical cement kiln without separation. Influencing factors on carbon uptake, long-term st

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10

Zhu, Jianhua. "Characterization of cement-kiln-dust stabilized base/subbase aggregate /." Full-text version available from OU Domain via ProQuest Digital Dissertations, 1998.

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11

Schmidt, Heinrich. "X-ray diffraction study of high temperature reaction products in the barium oxide-silica-alumina-ferric oxide system." Thesis, Pretoria : [s.n.], 2001. http://upetd.up.ac.za/thesis/available/etd-03072007-132505.

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12

Moosberg-Bustnes, Helena. "Fine particulate by-products from mineral and metallurgical industries as filler in cement-based materials /." Luleå, 2003. http://epubl.luth.se/1402-1544/2003/36.

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13

Awe, Yewande Aramide. "An investigation of the use of two industrial waste by-products in contaminant barrier systems." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321928.

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14

Slabbert, Michael Charles. "Utilising waste products from Kwinana industries to manufacture low specification geopolymer concrete." Thesis, Curtin University, 2008. http://hdl.handle.net/20.500.11937/606.

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One technology that makes concrete without cement and does not have the associated carbon footprint is geopolymer concrete. This technology utilizes waste fly ash from power stations and mixes it with activating chemicals to form a binder with similar or better properties than cement. Not only does this technology directly reduce carbon emissions by replacing cement it also utilizes the waste bi-product from power stations and prevents it from going to landfill. Concrete is composed of coarse aggregates, sand and cementitious paste. It seemed possible to make geopolymer concrete from 100% wast

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15

Lin, Xiaolu 1975. "Effect of early age carbonation on strength and pH of concrete." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100230.

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Carbonation curing of concrete products has shown potentials for CO2 capture and storage with environmental, technical and economical benefits in global greenhouse gas mitigation exercise. The primary objective of this study is to investigate the effect of early age carbonation on mechanical performance and pH of concrete in an attempt to understand the process and promote large scale applications.<br>It was found that significant early strength was developed in cement and concrete through early age carbonation curing. The early strength could be maintained and improved due to subsequent hydra

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16

Cheung, Kwai Wah. "Large-scale laboratory and in-situ field tests on cemented rubber chips (rubber-soil) as pavement sub-base /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202003%20CHEUNG.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003.<br>Includes bibliographical references (leaves 213-216). Also available in electronic version. Access restricted to campus users.

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17

Slabbert, Michael Charles. "Utilising waste products from Kwinana industries to manufacture low specification geopolymer concrete." Curtin University of Technology, Department of Civil Engineering, 2008. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=117996.

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One technology that makes concrete without cement and does not have the associated carbon footprint is geopolymer concrete. This technology utilizes waste fly ash from power stations and mixes it with activating chemicals to form a binder with similar or better properties than cement. Not only does this technology directly reduce carbon emissions by replacing cement it also utilizes the waste bi-product from power stations and prevents it from going to landfill. Concrete is composed of coarse aggregates, sand and cementitious paste. It seemed possible to make geopolymer concrete from 100% wast

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18

Mostert, F. "Improving the Deviro panel : technical enhancements of a wood fibre-cement composite from paper mill de-inking sludge." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/49988.

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Thesis (MScFor)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: This research focuses on the utilisation of de-inking sludge from a tissue mill to produce a wood-fibre inorganic composite called the Deviro panel. The study is based on the SA provisional patent 95/9594 by Ysbrandy and Gerischer' and the further research conducted by Crafford'. The patented Deviro panel contains up to 70% de-inking sludge. Cement and a cement extender serve to fortify the composite. The panel's fibre content of 25-30% is significantly greater than encountered in commercial fibre inorganic composites w

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19

Singh, Maneesh. "Studies on the cement-bonded briquettes of iron and steel plant by-products as burden material for blast furnaces /." Luleå, 2003. http://epubl.luth.se/1402-1544/2002/50.

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20

Cavalcante, Francisco das Chagas Isael Teixeira. "The Use of encapsulation techniques as an alternative to employment of soil contaminated by petroleum products in base and sub-base of pavement layers." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15078.

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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>The petrochemical industry or petroleum deserves special attention because, in practically all stages (drilling, refining, storage and distribution), residues that harm the environment and is a challenge to those responsible for their management are generated. Among the various wastes generated by the oil industry, are the Soils Contaminated by Petroleum Products (SCPD). In CearÃ state, the generation of this type of waste is coming from a refinery that is located in Fortaleza city. During maintenance performed on the steps of refin

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21

Renaut, Maxime. "Calcination des déchets industriels : synthèse de ciment et stabilisation/solidification des résidus de combustion." Thesis, Artois, 2017. http://www.theses.fr/2017ARTO0203/document.

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Depuis la fin du 20ème siècle, notre société a pris conscience que la protection de l’environnement et le développement durable sont nécessaires à notre épanouissement futur. Des directives ont contraint les pouvoirs publics, les collectivités, ainsi que les industriels à réagir notamment en s’impliquant dans la recherche. Les cimentiers sont aussi concernés. La fabrication du ciment nécessite énormément de matières premières.L’objectif principal de cette thèse est donc de valoriser les sous-produits industriels en matériaux cimentaires. Le contexte et la problématique des déchets sont abordés

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22

Janíčková, Vlasta. "Vliv cementářských odprašků na vlastnosti alkalicky aktivované strusky." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-414115.

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This masters thesis deals with influence of cement bypass kiln dust on physico-mechanical properties of alkali activated slag and influence of chosen compounds of cement bypass kiln dust on alkali activated slag. Using alkali activated slag is limited by its shrinkage. The setting time with different amount of cement bypass kiln dust and its chosen compounds (CaO, KCl and K2SO4) were measured by isotermal and isoperibolic calorimetry too. The strength and length changes of the mixtures with different amount of cement bypass kiln dust were measured. Samples were analysed by X-Ray diffraction an

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23

Silva, Suely Alves. "Estudo dos Produtos da CombustÃo do CarvÃo Mineral e da Borra Branca de AlumÃnio para AplicaÃÃo na ConstruÃÃo Civil." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10618.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>O aumento da produÃÃo de resÃduos gera a necessidade de tratÃ-los e/ou armazenÃ-los de forma adequada, minimizando ou eliminando os prejuÃzos ambientais. Nesta pesquisa, foram estudados os Produtos da CombustÃo do CarvÃo Mineral (PCCs) e borra branca de alumÃnio. Os PCCs foram obtidos durante a queima do carvÃo mineral em uma usina termoelÃtrica e a borra branca foi obtida durante o processo de recuperaÃÃo de alumÃnio. Com o objetivo principal de produzir um cimento a partir da moagem de alta energia, os resÃduos foram caracteriz

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24

Formosa, Mitjans Joan. "Formulaciones de nuevos morteros y cementos especiales basadas en suproductos de magnesio." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/97207.

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En la presente tesis doctoral se evalúa el potencial de algunos subproductos de magnesio empleados para la formulación de diferentes materiales de construcción y su utilización en diferentes soluciones constructivas. En este sentido, el uso de subproductos industriales para el desarrollo de materiales de construcción potencia criterios de sostenibilidad y beneficios medioambientales asociados a la reutilización de materiales secundarios y a la disminución de actividades extractivas de recursos naturales. La memoria de la presente tesis doctoral se ha estructurado siguiendo el mismo eje con

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25

Renaut, Maxime. "Calcination des déchets industriels : synthèse de ciment et stabilisation/solidification des résidus de combustion." Electronic Thesis or Diss., Artois, 2017. http://www.theses.fr/2017ARTO0203.

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Depuis la fin du 20ème siècle, notre société a pris conscience que la protection de l’environnement et le développement durable sont nécessaires à notre épanouissement futur. Des directives ont contraint les pouvoirs publics, les collectivités, ainsi que les industriels à réagir notamment en s’impliquant dans la recherche. Les cimentiers sont aussi concernés. La fabrication du ciment nécessite énormément de matières premières.L’objectif principal de cette thèse est donc de valoriser les sous-produits industriels en matériaux cimentaires. Le contexte et la problématique des déchets sont abordés

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26

Lupsea, Maria-octavia. "Contribution to the environmental impact assessment of buildings : numerical modelling of dangerous substances’ release to water." Thesis, Toulouse, INSA, 2013. http://www.theses.fr/2013ISAT0007/document.

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Tous les produits de construction ou les ouvrages qui sont en contact avec l’eau de pluie, sont susceptibles de relarguer des composants chimiques potentiellement dangereux pour la santé humaine et l’environnement. Actuellement, le relargage des substances dangereuses dans l’eau est évalué essentiellement par des méthodes expérimentales - généralement des essais de lixiviation réalisées à l’échelle du laboratoire. Par ailleurs, les impacts environnementaux des produits de construction et des bâtiments sont évalués par l’approche Analyse de Cycle de Vie (ACV), réalisées à partir de données prop

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27

Altan, Ozan. "Photocatalytic concrete/cement - how does it function and possible product areas." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-93486.

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Concrete is one of our most important and most widely used building material but the process of making concrete causes major environmental pressures. Concrete can also look dirty and boring with age, but some regard that the aging effects caused by algae and mosses provide a beautiful patina. Concrete has come a long way in its development and after many years of research a new innovative method in material science has shown that by using nanotechnology to cement-based materials such as concrete structures, mortar, paint, pavement, etc., a photocatalytic effect is given. Photocatalytic techniq

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28

Wilde, William James. "Life cycle cost analysis of Portland cement concrete pavements /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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29

Kochem, Keila. "Potencialidades de logística reversa do resíduo de gesso da indústria da construção civil." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/2951.

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O presente estudo teve por objetivo geral delinear o atual panorama de gerenciamento de resíduo de construção e demolição (RCD) e a geração de resíduos de gesso (RGs) no estado do Paraná, identificando as principais potencialidades de aproveitamento do resíduo de gesso no que se refere à logística reversa. Paralelamente realizou-se o diagnóstico do gerenciamento de RCD e RG nos 20 maiores municípios geradores de resíduo do estado do PR, por meio da aplicação de questionários auto preenchidos. O RCD da cidade de Cascavel foi caracterizado segundo NBR 10.004 e o RG, por sua vez foi caracterizado

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30

Vikström, Amanda. "Separate Calcination in Cement Clinker Production : A laboratory scale study on how an electrified separate calcination step affects the phase composition of cement clinker." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-184038.

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Cement production is responsible for around 7% of the global anthropogenic carbon dioxide emissions. More than half of these emissions are due to the unavoidable release of carbon dioxide upon thermal decomposition of the main raw material limestone. Many different options for carbon capture are currently being investigated to lower emissions, and one potential route to facilitate carbon capture could be the implementation of an electrified separate calcination step. However, potential effects on the phase composition of cement clinker need to be investigated, which is the aim of the present s

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31

Bunford, Joanna. "The formation of calcium sulphoaluminate and related cements using industrial waste products." Thesis, Staffordshire University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322942.

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32

Lupsea, Maria-octavia. "Contribution to the environmental impact assessment of buildings : numerical modelling of dangerous substances’ release to water." Electronic Thesis or Diss., Toulouse, INSA, 2013. http://www.theses.fr/2013ISAT0007.

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Tous les produits de construction ou les ouvrages qui sont en contact avec l’eau de pluie, sont susceptibles de relarguer des composants chimiques potentiellement dangereux pour la santé humaine et l’environnement. Actuellement, le relargage des substances dangereuses dans l’eau est évalué essentiellement par des méthodes expérimentales - généralement des essais de lixiviation réalisées à l’échelle du laboratoire. Par ailleurs, les impacts environnementaux des produits de construction et des bâtiments sont évalués par l’approche Analyse de Cycle de Vie (ACV), réalisées à partir de données prop

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33

Cardim, de Carvalho Filho Arnaldo. "Análisis del ciclo de vida de productos derivados del cemento - Aportaciones al análisis de los inventarios del ciclo de vida del cemento." Doctoral thesis, Universitat Politècnica de Catalunya, 2001. http://hdl.handle.net/10803/5903.

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En esta tesis se estudian los efectos ambientales de la producción del cemento, incluyendo las diferentes etapas que componen su ciclo de vida, con objeto de estructurar y proponer las bases fundamentales de un Inventario del Ciclo de Vida (ICV) nacional de dicho producto.<br/>Tras realizar un estudio sobre los ICV del cemento, existentes y disponibles en ámbito internacional, se analizan los límites aplicados a los diferentes subsistemas de producción y se estudia la viabilidad de utilización de estos ICV en el análisis del ciclo de vida (ACV) de los productos con base cemento. Este análisis

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34

Geven, Caglar. "Investigation Of The Properties Of Portland Slag Cement Produced By Separate Grinding And Intergrinding Methods." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610662/index.pdf.

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In recent years, there has been a growing trend for the use of industrial by-products in the production of blended cements because of economical, environmental, ecological and diversified product quality reasons. Granulated blast furnace slag, a by-product of the transformation of iron ore into pig-iron in a blast furnace, is one of these materials which is used as a cementitious ingredient. The aim of this study is to investigate the properties of Portland slag cement (CEMII/B-S) by using separate grinding and intergrinding of granulated blast furnace slag and Portland cement clinker. For th

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35

Jibaja, Cuadros Silvia Azucena. "Investigación y análisis de mercado para una empresa fabricante de placas de fibrocemento a partir de cascarilla de arroz en Lima Metropolitana." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2014. https://hdl.handle.net/20.500.12672/9911.

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Publicación a texto completo no autorizada por el autor<br>Responde a la interrogante de conocer si tendrá acogida en el mercado local de oficinas el producto placas de fibrocemento, fabricados a partir de fibras naturales como la cascarilla de arroz, como tabiquería interna para división de espacios. Para esta investigación se ha utilizado información extraída de fuentes peruanas que describen entre otras cosas: información general sobre el sector construcción y estadísticas más importantes sobre la cantidad de oficinas en Lima Metropolitana, la rotación de productos similares o sustitutos en

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Cances, Julien. "NOx formation and reduction by a coal, a lignite, an anthracite and a petroleum coke in conditions of cement plant calciner." Phd thesis, Toulouse, INPT, 2006. http://oatao.univ-toulouse.fr/7554/1/cances.pdf.

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The cement industry is a high energy consumer. This energy is mostly provided by the combustion of pulverized carbonaceous solid fuels. Up to 60 % of this fuel income may be injected into the calciner. However, the combustion of solid fuels produces pollutants, particularly NOx. Several reduction technology were developed. The most promising one, in term of cost and efficiency, is the reburning. It consists in a secondary fuel injection, creating a fuel rich zone favorable to NOx reduction. The fuel injection in cement plant calciners may be compared to this technique. The solids interact with

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37

Camalan, Mahmut. "Size-by-size Analysis Of Breakage Parameters Of Cement Clinker Feed And Product Samples Of An Industrial Roller Press." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614594/index.pdf.

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The main objective in this study is to compare breakage parameters of narrow size fractions of cement clinker taken from the product end and feed end of industrial-scale high pressure grinding rolls (HPGR) in order to assess whether the breakage parameters of clinker broken in HPGR are improved or not. For this purpose, drop weight tests were applied to six narrow size fractions above 3.35 mm, and batch grinding tests were applied to three narrow size fractions below 3.35 mm. It was found that the breakage probabilities of coarse sizes and breakage rates in fine sizes were higher in the HPGR p

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38

Coussy, Samuel. "Stabilisation de rejets miniers pollués à l’arsenic à l’aide de sous-produits cimentaires : étude de l’influence de la cristallochimie sur le risque de mobilisation des polluants." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0077/document.

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L’objectif de la thèse est de comprendre le comportement géochimique de l’arsenic dans les remblais miniers en pâte cimentés. Cette technique est employée depuis plusieurs années pour remblayer les galeries de mine exploitées à l’aide des rejets de concentrateurs. Pour cette étude, deux types de remblais sont élaborés en laboratoire : des échantillons de remblai minier en pâte synthétiques, fabriqués à partir de silice et enrichis artificiellement en arsenic, et des remblais miniers en pâte élaborés à partir de rejets miniers arséniés. Dans les deux cas, différents liants cimentaires sont test

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39

Al-Jabban, Wathiq. "Soil Modification By Adding Small Amounts of Soil Stabilizers : Impact of Portland Cement and the Industrial By-Product Petrit T." Licentiate thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65813.

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This licentiate thesis presents results of laboratory experiments regarding the effectiveness of adding small amounts of binders in order to modify and improve the mechanical performance of low organic clayey silt soil. Two types of binders have been used i.e. cement and an industrial by-product named Petrit T. The study covered both the immediate and longterm effects on the soil material. Binder content was added by soil dry weight, Petrit T at 2, 4 and 7% and cement at 1, 2, 4 and 7%. An experimental program has been carried out, including tests of consistency limits, unconfined compressive

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40

Saade, Marcella Ruschi Mendes 1987. "Influência da alocação de impactos na indústria siderúrgica sobre a avaliação de ciclo de vida de cimentos." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258517.

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Orientador: Vanessa Gomes da Silva<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-23T23:35:49Z (GMT). No. of bitstreams: 1 Saade_MarcellaRuschiMendes_M.pdf: 5919886 bytes, checksum: 930c2ebc2a9376b78ca9e78155c49373 (MD5) Previous issue date: 2013<br>Resumo: O setor siderúrgico brasileiro, já há algum tempo, focaliza esforços na minimização das cargas ambientais do processo produtivo do aço. Devido à grande quantidade de co-produtos gerados no processo, o setor prioriza a disseminação

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Fung, Wing Wah. "Lightly cemented rubber tire chips as highway pavement sub-base and the use of fiber Bragg's grating (FBG) as instrumentation sensors /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202004%20FUNG.

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Immelman, Derick Wade. "The influence of percentage replacement on the aggregate and concrete properties from commercially produced coarse recycled concrete aggregate." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80388.

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Thesis (MScEng)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: The aim of this research is to investigate the potential use of coarse recycled concrete aggregate (RCA) as a material in structural concrete. The lack of knowledge and specifications in South Africa are the main reasons for this research of RCA. By increasing the database of research of RCA in South Africa the possibility of specifications for this alternative building material can be initiated. The implications of such specifications would lead to RCA acceptance in concrete design and therefore reducing the amount of c

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Kalina, Lukáš. "Syntéza aluminátosilikátových systémů na bázi geopolymerů orientovaná na využívání sekundárních surovin." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-233335.

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Portland cement-based products are the most commonly used building materials. However, it is well known that the production of OPC not only consumes a significant amount of natural resources and energy but also releases high quantity of carbon dioxide (CO2) to the atmosphere. Purpose of this work is to develop new cementitious material similar to Portland cement-based concrete, which is convenient in terms of energy and is environmental-friendly at once. This work presents preparation, composition and properties of inorganic aluminosilicate polymer, called geopolymer, synthesized from blast fu

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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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Etzold, Merlin Aragon. "Space filling by growing sheets : a new approach to the structure of cement's abundant hydration product." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708813.

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Ndong, Engone Jean Gérard. "Développement de matériaux cimentaires à base de sous-produits bois : mise en forme par extrusion et vibrocompactage." Thesis, Artois, 2015. http://www.theses.fr/2015ARTO0211/document.

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En France, le gisement de déchets bois produits au sein des entreprises de première et seconde transformations est estimé à environ douze millions de tonnes par an. Soixante pourcent de ces déchets proviennent essentiellement des scieries sous forme de sciure, de copeaux de bois. Actuellement, il existe différentes filières de valorisation de ces déchets plus ou moins nocives à l'environnement. Un nouvel enjeu est donc de trouver des voies et moyens permettant une valorisation durable et conséquente de ces déchets. Dans ce contexte, la région Nord-Pas-de-Calais a initié un projet visant à la v

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TICONA, JAIME MAMANI. "EVALUATION OF THE ECONOMIC IMPACT INDUCED BY THE PROCESS OF PRODUCT CERTIFICATION: A METROLOGICAL INSTRUMENT FOR INDUSTRIAL COMPETITIVENESS: A STUDY CASE ON CEMENT, STEEL, TIRES, AND BUS SHELL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2003. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=4199@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Com base na regressão numérica de séries históricas associadas à produção de quatro produtos destacados no ranking mundial de produção (cimento, aço, pneus e carroceria de ônibus), a presente pesquisa de mestrado avalia os impactos econômicos decorrentes do processo da certificação. Considerada instrumento econômico de mercado que permite diferenciar produtos e fornecer incentivos para consumidores e produtores, o processo de certificação é um mecanismo formal que assegura qualidade e conformidade do produto a especificações técn

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Bradová, Lada. "Studium alkalicko křemičité reakce v hybridních systémech." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-414119.

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This study evaluates question of alkali–silica reaction (ASR) in hybrid system, which was designed in the bachelor's thesis, to meet the requirements of EN 197-1 and classified to the Blastfurnace CEM III/C cements. The durability of this system is a great unknown. For this reason, the same methods (ASTM C1260, ASTM C289 and ASTM C856) were used to observer the ASR effects as the ones used to observer the Portland cement based concrete. Supplementary methods include determination of compressive strengths according to EN 196-2 and scanning electron microscopy to observe the microstructure. Hybr

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Pérez, Donoso Claudia Elena. "Evaluación del potencial de sustitución energética en una planta cementera, con compensación de bonos de carbono." Tesis, Universidad de Chile, 2004. http://repositorio.uchile.cl/handle/2250/151410.

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Memoria para optar al Título Profesional de Ingeniero en Recursos Naturales Renovables<br>El Protocolo de Kyoto, a través del Mecanismo de Desarrollo Limpio (MDL), permite la negociación de las reducciones de gases de efecto invernadero por medio de la certificación de proyectos aprobados por los gobiernos. Las plantas de cemento representan una fuente importante de emisión de estos gases, principalmente de CO2, que se liberan por la quema de combustibles fósiles, como el carbón, en su proceso de producción. Estos gases pueden ser reducidos si se realiza una sustitución energética parcial por

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BELLI, ALBERTO. "Comparison between Commercial and Recycled Carbon-Based Fillers and Fibers for the Development of Smart and Sustainable Multifunctional Mortars." Doctoral thesis, Università Politecnica delle Marche, 2019. http://hdl.handle.net/11566/263335.

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La società moderna è in gran parte fondata sulle infrastrutture che garantiscono la fornitura di beni, trasporti e mezzi di comunicazione. La loro salvaguardia e il risparmio delle risorse necessarie per il loro funzionamento è di crescente importanza per l’Ingegneria civile. Per questo motivo, la ricerca sui materiali da costruzione si sta concentrando sul riutilizzo di sottoprodotti industriali riciclati, per un’industria edilizia più sostenibile. L’Ingegneria dei materiali, grazie al recente sviluppo di nanomateriali ad alte prestazioni, propone molteplici spunti per la realizzazione di mat

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