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Dissertations / Theses on the topic 'High Volume Fly Ash'

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Published: 4 June 2021

Last updated: 10 February 2022

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1

Hung, Hsien-Hsin. "Properties of high volume fly ash concrete." Thesis, University of Sheffield, 1997. http://etheses.whiterose.ac.uk/14441/.

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This thesis presents a detailed investigation on the engineering properties and microstructural characteristics of concrete containing a high volume of fly ash (HVF A). The purpose of the project is to evaluate the concept of using relatively large volumes of fly ash in normal portland cement concrete, and hence enhance the beneficial use of fly ash in value-added products and construction. A total of eight concrete mixtures with and without fly ash was investigated. The proportion of fly ash in all the HVF A concrete mixtures varied from 50 to 80 % by weight of the cementitious materials, wit

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2

Roy, Vincent 1970. "Rheological and mechanical behaviour of high volume fly ash cement grouts." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23375.

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The society is becoming increasingly more energy and environmentally conscientious, which has forced development of construction materials, which are both inexpensive and require very little energy to produce. One way of producing such materials is to utilize by-products of industrial processes. High-volume fly ash cement based grouts are tributary of such developements.<br>This thesis outlines the results of a detailed study of the grain size distribution, three rheological properties and five mechanical properties of high-volume fly ash grouts (60% cement replacement for fly ash by weight) w

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3

Sahmaran, Mustafa. "Self-compacting Concrete With High Volumes Of Fly Ash." Phd thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12606896/index.pdf.

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In this investigation, SCCs were prepared by keeping the total mass of cementitious materials (cement and fly ash) constant at 500 kg/m3, in which 30, 40, 50, 60, and 70% of cement, by weight, was replaced by the high-lime and low-lime fly ash. For comparison, a control SCC mixture without any fly ash was also produced. The fresh properties of the SCCs were observed through, slump flow time and diameter, V-funnel flow time, L-box height ratio, U-box height difference, segregation ratio and the rheological parameters (relative yield stress and relative plastic viscosity). Relations between work

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4

Hardy, Dylan K. "Development and Characterization of a Self-Sensing High Volume Fly Ash CNF HPFRCC." Thesis, University of Louisiana at Lafayette, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1593058.

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<p> Cement based brittle matrix composites that show deflection hardening called high performance fiber reinforced cementitious composites (HPFRCC) have the potential of offering high resiliency and environmentally sustainable benefits in numerous applications. However, more information is needed to fully understand, predict the behavior, and add functionality to HPFRCCs. This experimental research program aims to develop and characterize a new type of HPFRCC. This new HPFRCC is composed of polyvinyl alcohol (PVA) microfibers, carbon nanofibers (CNF), and a high volume of fly ash (HVA) to form

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5

Upadhyaya, Sushant. "Early age strength prediction for high volume fly ash concrete using maturity modeling." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8868.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2008.<br>Thesis research directed by: Dept. of Civil and Environmental Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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6

Makrides-Saravanos, Elli. "Engineering properties of high performance concrete containing large volume of Class C fly ash." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23904.pdf.

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7

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

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

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8

Kearsley, Elizabeth Paulina. "The effect of high volumes of ungraded fly ash on the properties of foamed concrete." Thesis, University of Leeds, 1999. http://etheses.whiterose.ac.uk/287/.

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Foamed concrete is produced by combining foam and slurry thus entrapping numerous small bubbles of air in the cement paste or mortar. The density of foamed concrete is a function of the volume of foam added to the slurry and the strength decreases with decreasing density. In this study the effect on the properties of foamed concrete, of replacing large volumes of cement with both classified and unclassified fly ash (pfa) was investigated. The casting densities of the materials used in this investigation varied between 1000 and 1500 kg/m3 and 50%, 66.7% and 75% of the cement (by weight) was rep

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9

Roubal, David. "Vývoj vysokopevnostních betonů s vysokým obsahem el. popílků." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392363.

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This diploma thesis deals with the study of high-strength, high-volume fly ash concrete. The theoretical part of this thesis focuses on the detailed characteristic and main principles of high-strength concrete, high-volume fly ash concrete. In addition, according to the findings, the technology of high-strength and high-volume fly ash concrete, including principles of high strength, has been described. On the basis of the findings, high-strength, high-volume fly ash concrete for specific compressive strengths has been designed and created in the experimental section. These concretes were then

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10

Ambruz, Pavel. "Vývoj betonů s vysokým obsahem popílku a ověření jeho trvanlivosti v různých prostředích." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226741.

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This thesis contains two main parts: theoretical and experimental. The theoretical part deals with summarization knowledge of high-volume fly ash (HVFA) concretes. Among others, there are mentioned processes of producing of fly ash, characteristic features and resistance to aggressive environments of HVFA concretes. The theoretical part ends with a suitable example of practical application. In the practical part were tested properties of nine different mixtures containing 40%, 50% and 60% replacement by weight of the cement by fly ash. They were compared with the reference mixtures without fly

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11

Opravilová, Lenka. "Studium vývoje fázového složení v silikátových systémech dostupnými metodami a jejich optimalizace." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-234576.

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One of the most prominent measurable parameters of the development of phases and phase transformations in inorganic systems are undoubtedly the volume changes of silicate matrix. The study of volume changes is crucial in the terms of usable durability of final product. They represent shrinkage or expansion of the material and may lead to significant decrease of technological and ecological parameters and often to complete destruction of these materials. Most often the volume changes can be observed when cement is used as a binder and in concretes, mortars, artificial aggregates and other simil

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12

Yang, Fan. "High Grade Magnetic Material Extraction from Coal Fly Ash." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/201.

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Since a substantial amount of coal combustion byproducts (CCB) are produced each year, generating value-added product from fly ash, which is a major constituent of these CCBs, has been an important area of research for several decades. Natural magnetite (NM), which is used to maintain dense medium slurry pulp density in coal preparation plants, has a current market value of more than $200 per ton. The use of fly ash derived magnetite (FAM) as an alternative to natural magnetite has potential benefits for dense medium processes, such as lower cost, greater stability at low medium density, more

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13

Burden, Donald. "The durability of concrete containing high levels of fly ash." Skokie, Ill. : Portland Cement Association, 2006. http://www.cement.org/bookstore/profile.asp?itemid=SN2989.

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14

Cetin, Bora. "Stabilization of recycled base materials with high carbon fly ash." College Park, Md.: University of Maryland, 2009. http://hdl.handle.net/1903/9573.

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Thesis (M.S.) -- University of Maryland, College Park, 2009.<br>Thesis research directed by: Dept. of Civil and Environmental Engineering . Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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15

Demirkan, Mehmet Melih. "Remediation of petroleum contaminated soils and groundwater using high carbon content fly ash." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/7870.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2008.<br>Thesis research directed by: Dept. of Civil and Environmental Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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16

Yuan, Guobing. "Zeolite and high carbon fly ash mixes as liner materials for lead/phenol sorption /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq25904.pdf.

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17

Recena, Fernando Antonio Piazza. "Método de dosagem de concreto pelo volume de pasta com emprego de cinza volante." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/36331.

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O presente trabalho foi desenvolvido como intuito de estabelecer uma metodologia de dosagem de concreto com uso de cinza volante, objetivo e racionalizado, visando à redução do consumo de cimento e a intensiva utilização de um resíduo poluente, contribuindo para o incremento na sustentabilidade da construção civil pela redução no consumo de clínquer e da liberação de dióxido de carbono para a atmosfera. Foi estabelecida como premissa basilar a hipótese de ser possível relacionar diretamente a trabalhabilidade de um concreto com seu volume de pasta, sendo este tanto menor quanto menor for o vol

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18

Jerban, Majid. "Performance of concrete incorporating amorphous silica residue and biomass fly ash." Mémoire, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/9807.

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L'industrie du ciment est l'une des principales sources d'émission de dioxyde de carbone. L'industrie mondiale du ciment contribue à environ 7% des émissions de gaz à effet de serre dans l'atmosphère. Afin d'aborder les effets environnementaux associés à la fabrication de ciment exploitant en permanence les ressources naturelles, il est nécessaire de développer des liants alternatifs pour fabriquer du béton durable. Ainsi, de nombreux sous-produits industriels ont été utilisés pour remplacer partiellement le ciment dans le béton afin de générer plus d'économie et de durabilité. La performance

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19

Li, Jieren. "The combined effect of silica fume and fly ash on microstructure and properties of high-strength concrete." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0035/NQ38485.pdf.

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20

Puri, Rajnish. "Development of High performance Concrete Composites Using Class F Fly Ash and PCC Bottom Ash, and a Statistical Model to Predict Compressive Strength of Similar Concrete Composites." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/dissertations/1123.

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AN ABSTRACT OF THE DISSERTATION OF RAJNISH PURI, for the Doctorate of Philosophy Degree in ENGINEERING SCIENCE WITH CONCENTRATION IN CIVIL AND ENVIRONMENTAL ENGINEERING, presented on APRIL 15, 2015 at Southern Illinois University Carbondale TITLE: DEVELOPMENT OF HIGH PERFORMANCE CONCRETE COMPOSITES USING CLASS F FLY ASH AND PCC BOTTOM ASH, AND A STATISTICAL MODEL TO PREDICT COMPRESSIVE STRENGTH OF SIMILAR CONCRETE COMPOSITES ADVISOR: Dr. Sanjeev Kumar It is a common knowledge that the use of concrete is as old as the evolution of human civilization. People have always dreamed beyond the dotted

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21

Evans, Christopher Michael. "The influence of fly ash and early-age curing temperature on the durability and strength of high-performance concrete." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28830.pdf.

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22

Yeboah, Nii Narh Nortey. "Characterization and productive reuse of high carbon content coal and biomass energy combustion residuals." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51858.

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In recent decades, advances in low NOₓ coal combustion and increasingly strict CO₂ reduction mandates have changed power plant boiler operations quite significantly. As a result of these necessary efforts, the characteristics of fly ash generated at many power plants have also changed. In particular, increases in unburned carbon content have been observed with detrimental implications on the utility of these fly ashes in concrete applications. Over the same time period, the combustion of biomass for energy generation has received increased attention due to the potential benefits of reducing C

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23

Sutton, Mark. "Uranium solubility, speciation and complexation at high pH." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/7178.

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Low level nuclear waste arising from UK nuclear sites, research establishments, hospitals and industry is currently disposed of at the Drigg Disposal Facility in Cumbria. Waste is packed into steel canisters before being compacted and grouted into larger steel storage containers. The aqueous chemistry of wastes, especially radionuclides, in the presence of grout material is of major interest. The gout used at the Drigg site is a mixture of Ordinary Portland Cement and Pulverised Fly Ash additive, from which ingressing water will leach high levels of calcium, sodium and potassium and produce wa

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24

Bateman, Eric. "Performance of No Vibration/No Admixture Masonry Grout Containing High Replacement of Portland Cement with Fly Ash and Ground Granulated Blast Furnace Slag." DigitalCommons@CalPoly, 2014. https://digitalcommons.calpoly.edu/theses/1163.

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When hollow concrete masonry is used for construction in high seismic regions, structural designs typically require fully grouted walls. The grouting process is labor-intensive, time-consuming and has a high energy demand due to requirements of consolidation in each and subsequent grout lifts. Self-consolidating grout with admixtures has been successfully used without segregation in walls of up to 12.67 ft. in height. Investigation of self-consolidating grout mixes without admixtures has potential for sustainability improvement. This thesis reports on the compression strength and consolidation

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25

Claus, Julien. "Investigations on a new high-strength pozzolan foam material." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/31804.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Doyoyo Mulalo; Committee Member: Will Kenneth; Committee Member: Yavari Arash. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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26

Stundebeck, Curtis J. "Durability of ternary blended cements in bridge applications." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5082.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on November 6, 2007) Includes bibliographical references.

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27

Stachová, Jana. "Snižování emisí CO2 při výpalu hydraulických pojiv." Doctoral thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-390263.

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The thesis is focused on research and development of hydraulic binders based on FBC-ashes. It examines the possibilities of using this ash in the clinker so that the properties of the final cement are comparable to Portland cement. As an integral part of this thesis the research of emission reduction possibilities in the cement industry - a very current topic these days - is presented.

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Osuská, Lucia. "Vývoj vysokohodnotných betonů s využitím druhotných surovin." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240270.

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The thesis is focused on the possibility of using secondary energy resources as an additive to concrete to improve some of its resulting properties. The theoretical part is devoted to the problems of shrinkage and prominence hydration process during hydration of the concrete. This section also contains the results of research work from domestic and foreign sources of high temperature fly ash and fluidized bed combustion fly ash use and their using in concrete. The practical part verifies the possibility of using these materials and their combination as an additive to concrete with impact on th

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29

Hendricks, Nicolette Rebecca. "The application of high capacity ion exchange absorbent material, synthesized from fly ash and acid mine drainage, for the removal of heavy and trace metals from secondary co-disposed process waters." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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The objective of this study was to investigate the feasibility of the application of low cost high capacity inorganic ion exchange material, synthesized form collected fly ash and acid mine drainage solid residues, for the decontamination of secondary co-disposal process waters, with emphasis on investigating the processes governing the solid/solution interface.

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30

Hendricks, Nicolette Rebecca. "The application of high capacity ion exchange adsorbent material, synthesized from fly ash and acid mine drainage, for the removal of heavy and trace metal from secondary Co-disposal process waters." Thesis, University of the Western Cape, 2005. http://hdl.handle.net/11394/1455.

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In South Africa, being the second largest global coal exporter, coal mining plays a pivotal role in the growth of our economy, as well as supplying our nation’s ever increasing electricity needs; while also accounting for more than 10% of the 20 x 109 m3 water used annually in the country. Coal mining may thus be classified as a large-scale water user; known to inevitably generate wastewater [acid mine drainage (AMD)] and other waste material, including fly ash (FA). Current and conventional AMD treatment technologies include precipitation–aggregation (coagulation/flocculation) – settling as h

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31

Beranová, Denisa. "Možnosti využívání klasických popílků po zavedení SNCR." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-217154.

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The master thesis deals with possibilities of utilization of conventional power plant fly ash after introduction of SNCR (Selective non-catalytic reduction) as a method of flue gas denitrification. Behaviour of fly ash containing products of denitrification, ash with water and stabilizate prepared from contaminated ash was studied. Experiments were focused on the study of various factors affecting the release of ammonia from prepared mixtures. Samples were exposed to the weather conditions to simulate deposition in addition to the laboratory experiment. Influence of the fly ash containing deni

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32

Fialová, Barbora. "Rehydratace alkalicky aktivované strusky po vysokoteplotním namáhání." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-239940.

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Ground granulated blast furnace slag is a by-product of the steel industry and is often used in combination with ordinary Portland cement as a binder in concrete. When concrete is exposed to high temperatures, physical and chemical transformations lead to significant loss of mechanical properties. This study aims to investigate the effect of high temperatures and rehydration on the mechanical properties, microstructure and phase composition of alkali activated slag. The results of the research could make an important contribution to decisions made concerning the reconstruction of structures af

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33

Khokhar, Muhammad Irfan. "Optimisation of concrete mix design with high content of mineral additions: effect on microstructure, hydration and shrinkage." Doctoral thesis, Universite Libre de Bruxelles, 2010. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209985.

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The cement being used in the construction industry is the result of a chemical process<p>linked to the decarbonation of limestone conducted at high temperature and results in a<p>significant release of CO2. This thesis is part of the project EcoBéton (Green concrete) funded<p>by the French National Research Agency (ANR), with a purpose to show the feasibility of<p>high substitution of cement by mineral additions such as blast furnaces slag, fly ash and<p>limestone fillers. Generally for high percentages of replacements, the early age strength is<p>lower than Portland cement concrete. To cope w

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34

Ballon, Marek. "Výzkum chování kompozitů na bázi anorganických matric v extrémních podmínkách." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240426.

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Alkali activated materials have great potential to be a material that could compete with Portland cement. Compared to concretes based on Portland cement they often exhibit greater durability and resistance to aggressive agents such as sulphates. Also their resistance to high temperature is substantial. This work is devoted to research on behavior of alkali-activated materials, particularly fly ash activated by sodium water glass and sodium hydroxide, exposed to these extreme conditions. The evaluation of properties was performed based on the detection of physico-mechanical parameters and micro

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35

Ptáček, Martin. "Studium ovlivnění hydratace portlandského cementu působením zinku." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401945.

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The topic of this work is the monitoring of the effect of zinc on the hydration process in Portland mixed cement (specifically with the addition of finely ground granulated blast-furnace slag, high temperature fly ash and fluidized bed combustion filter ash). How much zinc and at what time it remains in the pore solution during hydration. Activation energy of a mixture of cement with zinc in the form of soluble salts (Zn(NO3)2.6H2O and ZnCl2) and insoluble oxide (ZnO) by isothermal calorimetry was also investigated. The XRF method has shown composition during hydration. The zinc retardation ef

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Morel, Bayram Murat. "Investigation Of The Effects Of Temperature On Physical And Mechanical Properties Of Monolithic Refractory Made With Pozzolanic Materials." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606700/index.pdf.

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In recent years, scientific studies are carried out to find new refractory material. Having good mechanical properties under very high temperatures, refractories are widely used in industries like iron, steel, glass, cement and pottery. Researches are focused on monolithic refractory making because of their superior properties comparing to conventional firebrick refractories. Providing a mono-block body, having no joints makes the monolithic refractories more durable at elevated temperatures. Easier production and installation are two main points that people are choosing monolithic refractorie

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Sáček, Josef. "Vysokohodnotné betony na bázi druhotných surovin." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-216352.

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This work is devoted to study of physical-mechanical properties and structure of high performance concretes (HPC) based on portland cement. The attention is focused on possibility of substitution of economic high-cost components of concrete with utilization of secondary raw materials or cheaper components. Properties of raw materials and their influence on whole quality of concrete were tracked by various methods. Mechanical properties of prepared HPC samples were tested especially (compression and flexural strength) with further microscopic study of structure. Isoperibolic calorimetry and X-r

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Kolářová, Iva. "Vliv zinku přítomného ve vedlejších surovinách na hydrataci a vlastnosti portlandských směsných cementů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-234531.

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The theme of this work is to monitor the effect of zinc on the properties of blended Portland cements. Zinc was tested in the form of two-soluble salts: Zn(NO3)22 H2O and ZnCl2 and a very slightly soluble compound ZnO. Blended cements were prepared by partial replacement with finely ground granulated blast furnace slag, high-temperature and fluidized bed combustion filter fly ash. Flow properties were studied on the prepared pastes. Impact on hydration reactions was examined by using of isothermal and isoperibolic calorimetry. Flexural and compressive strength were measured as mechanical prope

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Martanová, Jana. "Studium mikrostruktury autoklávovaného pórobetonu s využitím druhotných surovin." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372320.

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Autoclaved aerated concrete is a used building material, especially for its thermal insulating properties. During autoclaving, an aerated concrete microstructure produces crystalline CSH phases, primarily tobermorite. The ingoing substances are calcium oxide and silica. In addition to commonly used raw materials, secondary raw materials rich in silicon dioxide can be used for production. The use of secondary raw materials gives the opportunity for the construction industry to be more environmentally friendly. Another benefit is the reduction of financial costs. The work explores the influence

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Baránek, Šimon. "Elektricky vodivé kompozity na bázi druhotných surovin." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2021. http://www.nusl.cz/ntk/nusl-433564.

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Electroconductive composites are modern materials that are commonly used in many industries such as the construction industry among others. For example these materials can be useful as sensors for monitoring changes in constructions. The aim of this thesis is the research of electrically conductive silicate composite based on secondary raw materials. The design of this composite is based on the development of its own mixtures and experimental verification of the effect of the structure. The introduction part consists of a detailed analysis of 15 materials. Samples of the 5 fine and 2 coarse el

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Hermann, Radek. "Vývoj chemicky odolné stříkané směsi." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392360.

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Production wastes for which a direct use in another production is found become secondary raw materials. There are several institutions in Czech Republic and in the world, which are currently dealing with the issue. This thesis deals with the issue of cementitious spray concrete mixtures and deals with the possibilities of using secondary raw materials and waste from production as partial replacement of binder and filler in these mixtures. The aim of this theses is to optimize the composition of additives in the recipe of the commercially produced pray mixture and to verify the influence of the

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Dolák, Martin. "Vývoj nových injektážních hmot pro rubovou injektáž kanalizací." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2021. http://www.nusl.cz/ntk/nusl-433585.

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ABSTRACT This thesis deals with the development of silicate based reverse grouts for the purpose of rehabilitation of sewers. The work also examines the possibility of substitution of basic input raw materials with secondary raw materials, meaning replacements of both filler components and binder components. As secondary raw materials, we refer to wastes from the production process which, after the necessary treatment, are used in another production. The development and experimental verification of the functionality of the developed grout was focused mainly on the use of secondary raw material

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Idle, Allen Michael. "Chloride resistance of high volume fly ash concretes." Thesis, 2009. http://spectrum.library.concordia.ca/976364/1/MR63257.pdf.

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Costly reinforced concrete structures serve as foundations for the economic prosperity of a nation The continued deterioration of concrete structures, due to corrosion of steel reinforcing rebar, requires the implementation of vast multi-million dollar rehabilitation projects to maintain an adequate level of service in these systems. The process of corrosion in reinforced concrete is largely due to the ingress and build-up of chloride ions in the capillary pores of concrete caused by the use of road salts and from contact/spray from seawater. Lowering the water to cement ratio and incorporatin

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Huang, Yu-Chen, and 黃玉珍. "Mechanical properties of high-volume fly ash concrete." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/18790431912068658732.

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碩士<br>國立中興大學<br>土木工程學系所<br>104<br>The purpose of this study is to explore the impact of fly ash content concrete strength development and the applicability of High-Volume Fly Ash concrete, according to the result of compressive strength test based on the concrete specimens with different fly ash content (0%, 20%, 40%, 60%) and appropriate concrete mixtures. The fly ash used in this study includes the power plant product of Taiwan Power Company (Tai-power) and Formosa Plastics Company (FPC). It complies with the level of CNS 3036 Grade-F fly ash specifications. The result of compressive strengt

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HU, KU-SHI, and 胡顧曦. "A Study on Durability of High-Volume Fly Ash Concrete." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/03912107059187563955.

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Teixeira, Elisabete Rodrigues. "High volume coal and biomass fly ash eco-efficient concrete." Doctoral thesis, 2019. http://hdl.handle.net/1822/60427.

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Tese de Doutoramento em Engenharia Civil<br>The environmental impact related with the use of several materials in construction sector is in the order of the day. It is well known that the production of Portland cement, one of the materials most used in the construction sector, has a significant contribution to the environmental impacts, mainly related with carbon dioxide emission. Therefore, the study and utilization of by-products or wastes usable as cement replacement in concrete can supply more sustainable options, but maintaining or improving the quality and durability properties of p

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Shih, Neng-Hao, and 施能豪. "Effects of the Loss on Ignition of Fly Ash on the Properties of High-Volume Fly Ash Concrete." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/eghrer.

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博士<br>國立中興大學<br>土木工程學系所<br>107<br>Two series of concrete mixtures (S20 and S30 series) were prepared with a 28-day target compressive strength of 20 ± 5 MPa and 30 ± 5 MPa, respectively. The low-calcium fly ash with loss on ignition (LOI) of 5% was used in S20 series and two kinds of low-calcium fly ash with loss on ignition (LOI) of 5% and 8% were used in S30 series as replacement for cement and/or fine aggregate of 0% (control), 20%, 40%, 50%, 60% and 80% by weight of the total cementitious materials. The properties of fresh concrete tested included the slump, air content, unit weight and se

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Su, Kuan-Yu, and 蘇冠宇. "Research on the Engineering Properties of High Volume Fly Ash Concrete." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/20356933528163042723.

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碩士<br>國立中興大學<br>土木工程學系所<br>99<br>In this research two kinds of fly ash with different loss on ignition (L.O.I.), selecting five substitute ratios of cement with fly ash (20-80%), were used to proportion concrete mixtures and prepare the specimens for test. Several experiments such as Compression test, measurement of Young’s modulus and Poisson ratio, bending test and shrinkage test were carried out to examine the basic and mechanics properties of high volume fly ash concrete (HVFC). Test results show that the larger substitute ratio of fly ash is, the more the dosage of superplasticizer will b

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Xu, Wei-Ting, and 許維庭. "Engineering Properties of Roller Compacted Concrete Pavement Using High-Volume Fly Ash." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/30440694198594291267.

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Heu, Wei-Ting, and 許維庭. "Engineering Properties of Roller Compacted Concrete Pavement Using High-Volume Fly Ash." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/14718164711364377362.

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碩士<br>國立中央大學<br>土木工程學系<br>84<br>In order to promote the usage of fly ash, to save the cost of disposing of wastes and to reduce the needs of cement, the research of high-volume fly ash concrete is still in progress outside the country. The advantages of roller-compacted concrete (RCC) are to be speedy on construction, to shorten schedule and to spare materials and cost price. This has already been used abroad on pavement engineering. The purpose of this st

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