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Dissertations / Theses on the topic 'Cement production'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Feizaghaei, Roozbeh. "Improving climate performance of cement production : Developing an assessment framework and applying it to a CEMEX cement production cluster in Germany." Thesis, Linköpings universitet, Industriell miljöteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-73643.

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It is very likely that human being is contributing to the process of global warming. Industrial activities such as cement production are among the largest sources of human-induced greenhouse gas emissions. Therefore, there are ongoing efforts to reduce the CO2 emissions attributed to the cement production. In order to be able to systematically identify, classify, and evaluate the most effective, applicable, and feasible CO2 improvement measures, it is essential to have an assessment framework, which has an environmental management perspective. Such a framework should be able to cover the wides

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2

El, Atasi Loubana. "Enviromental impact assessment for sustainable cement production." Thesis, Edinburgh Napier University, 2013. http://researchrepository.napier.ac.uk/Output/6651.

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Cement production requires intensive use of natural raw materials and energy. It also results in emissions to the atmosphere, the most significant being COZ. Studies estimate that the cement industry is responsible for 5% of global man-made COZ emissions. Managing and reducing these emissions is therefore a key priority. Cement emissions come from the following sources: chemical clinker-making process (50%-60 %), combustion of fossil fuels (40%), and indirect emissions from purchased electrical power (5%). This research has been carried out with the main objective of assessing the environmenta

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3

Akkapeddi, Srikanth Schindler Anton K. "Alternative solid fuels for the production of Portland cement." Auburn, Ala., 2008. http://hdl.handle.net/10415/1432.

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4

Eriksson, Matias. "Sustainability measures in quicklime and cement clinker production." Doctoral thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-112842.

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This thesis investigates sustainability measures for quicklime and cement clinker production. It is the aim of this thesis to contribute to the effort of creating a more sustainable modus of industrial production. The methods used comprises process simulations through multicomponent chemical equilibrium calculations, fuel characterization and raw materials characterization through dynamic rate thermogravimetry. The investigated measures relate to alternative fuels, co-combustion, oxygen enrichment, oxyfuel combustion, mineral carbonation and optimizing raw material mixes based on thermal decom

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5

Hanein, Theodore. "Development of a novel calcium sulfoaluminate cement production process." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=231004.

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6

Swart, Dustin W. "The utilization of alternative fuels in the production of Portland cement." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Theses/SWART_DUSTIN_26.pdf.

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7

Elhoweris, Ammar. "The process and production of calcium sulfoaluminate cements." Thesis, University of Aberdeen, 2017. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=232619.

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8

Matenda, Amanda Zaina. "GEOPOLYMER CONCRETE PRODUCTION USING COAL ASH." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1654.

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Coal powered power plants account for more than 40 percent of the electricity production of the United States. The combustion of coal results in a large number of solid waste materials, or coal combustion byproducts (CCBs). These waste materials are stored in landfill or ponds. The construction industry is heavily reliant on concrete which is used to make the building blocks for any type of structures, bricks. Concrete is a composite material made of a binder and coarse and fine aggregate. The most widely used binder in concrete production is Ordinary Portland Cement (OPC). Since cement manufa

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9

Avetisyan, Hakob G. "Sustainable Design and Operation of the Cement Industry." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1225820445.

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10

Meral, Cagla. "Using Perlite As A Pozzolanic Addition In Blended Cement Production." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/3/12605259/index.pdf.

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Perlite is a volcanic glass which has high amount of silica and alumina. Those properties make it a candidate, if finely ground, for being used as a pozzolan. The studies on the pozzolanic properties of perlite are very limited, and none of them has dealt with the use of perlite in the blended cement production. The aim of this study is to investigate the pozzolanic properties of perlite, and if appropriate to investigate perlite&rsquo<br>s usability in blended cement production. For this purpose, perlites from two different sources &ndash<br>Izmir and Erzincan - are used as replacement of

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11

Gooding, Dominic Edward Maxwell. "Improved processes for the production of soil-cement building blocks." Thesis, University of Warwick, 1994. http://wrap.warwick.ac.uk/4453/.

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Stabilised-soil cement building blocks are an established building material in many areas of the Less Developed World. This thesis has been split into three parts. Part A presented an overview of the process of soil-stabilisation and outlined the roles which soil structure and curing play in stabilisation. It examined methods of testing soils, highlighting errors presented in the published literature and presenting corrected testing procedures and unified plans for their implementation. Part B examined the conventional quasi-static block compaction process (slowly applied pressure) and establi

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12

Ibrahim, Rizwan. "Technology of cement production : issues and options for developing countries." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/44654.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1986.<br>MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING<br>Bibliography: leaves 253-256.<br>by Rizwan Ibrahim.<br>M.S.

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13

Fletcher, James George. "Borate fluxes in ordinary Portland cement production : a feasibility study." Thesis, University of Aberdeen, 1991. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU527393.

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The energy required to develop and process the high temperature phases essential to the performance of ordinary Portland cement (OPC) and to process the resulting clinker, represents a substantial fraction of the overall energy input. Both chemical engineering and chemical approaches have been used to reduce specific energy inputs. In this thesis the chemical engineering advances are reviewed, and the use of fluxes to reduce production costs is extensively investigated. Investigation of borate-assisted clinkering reactions forms the basis of this thesis, and the subject is addressed as follows

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14

Swanepoel, Jan Adriaan. "Modelling for integrated energy optimisation in cement production plants / J.A. Swanepoel." Thesis, North-West University, 2013. http://hdl.handle.net/10394/9701.

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Cement production is an energy intensive process. In South Africa the cost of energy increased since 2006, while cement sales have dropped dramatically. It has become important to focus on methods to optimise energy consumption to achieve cost savings in the cement industry. Various methods of reducing production cost by improving energy efficiency are available, but require extended installation periods and high initial capital expenditure. Other methods such as operational optimisation can reduce production cost, but offer limited savings. The aim of this study is to integrate the optimisat

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15

Wang, Ning. "Environmental production : use of waste materials in cement kilns in China /." Porsgrunn : Faculty of Technology, Telemark University College, 2008. http://teora.hit.no/dspace/bitstream/2282/741/1/Master_thesis.pdf.

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16

Hökfors, Bodil. "Phase chemistry in process models for cement clinker and lime production." Doctoral thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-86004.

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The goal of the thesis is to evaluate if developed phase chemical process models for cement clinker and lime production processes are reliable to use as predictive tools in understanding the changes when introducing sustainability measures. The thesis describes the development of process simulation models in the application of sustainability measures as well as the evaluation of these models. The motivation for developing these types of models arises from the need to predict the chemical and the process changes in the production process, the impact on the product quality and the emissions from

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17

Richards, Glen Nathaniel. "Air Emission Reduction from the Use of Alternative Fuels in Cement Production." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/371137.

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The brisk increase in recent global industrialisation and development has sourced similar demands for the provision of construction materials. Cement being a fundamental ingredient used, and the global rate of cement production is predicted to reach 6.1 billion tonnes in 2050. Cement manufacturing is a resource and energy intensive industry which utilises 9% of global industrial energy and is accountable for 5 per cent of carbon dioxide (CO2) emissions. Given the endothermic reactions required to produce 1 tonne of cement, it also consequently releases 1 tonne of CO2 into the atmosphere, propa

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18

Dean, Charles. "Application of the calcium looping cycle to CO2 mitigation in cement production." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/39335.

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The Ca-looping cycle is a novel means of capturing CO2 from an industrial or power flue gas. It has an inherent synergy with cement production in that a by-product is predominantly CaO, which forms nearly 70 % of the material feed to a cement works. However, integration of the two processes will inevitably lead to a decrease in the thermal efficiency of producing 1 kg of clinker due to the energy penalty of the Ca-loop calciner. Furthermore, experimental studies are required to determine whether any change in the trace element inventory of the sorbent takes place due to cycling between calcina

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19

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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20

Chan, Fai Yeung. "The characterization of Hong Kong sewage sludge for its ash utilization in cement production /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CBME%202009%20CHAN.

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21

Kligys, Modestas. "Production technology and properties of composite material made out of porous cement paste and crushed expanded polystyrene." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20091204_085542-55180.

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The composite material of different density, where porous cement paste serves as matrix and crushed waste expanded polystyrene packages serve as inclusions, was developed. The compositions of formative mixtures and technological parameters of production for this composite material were selected and its properties were investigated.<br>Sukurta skirtingo tankio kompozitinė medžiaga, kurioje matrica yra poringoji cemento tešla, o intarpai - trupintos polistireninio putplasčio pakavimo taros atliekos. Parinktos minėtos kompozitinės medžiagos formavimo mišinių sudėtys, gamybos technologiniai parame

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22

Hassan, Djihan. "Environmental sustainability assessment & associated experimental investigations of magnesia production routes." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648574.

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23

JAMSHAID, ASHIQ MUHAMMAD. "Influence of alternative fuels on the formation of dioxins in a cement production plant." Thesis, Umeå universitet, Kemiska institutionen, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-89026.

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24

Feiz, Roozbeh. "Industrial Ecology and Development of Production Systems : Analysis of the CO2 Footprint of Cement." Licentiate thesis, Linköpings universitet, Industriell miljöteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-105942.

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This research is an attempt to create a comprehensive assessment framework for identifying and assessing potential improvement options of cement production systems. From an environmental systems analysis perspective, this study provides both an empirical account and a methodological approach for quantifying the CO2 footprint of a cement production system. An attributional Life Cycle Assessment (LCA) is performed to analyze the CO2 footprint of several products of a cement production system in Germany which consists of three dierent plants. Based on the results of the LCA study, six key perform

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25

GALIMBERTI, MATTEO. "ADVANCES IN ORDINARY PORTLAND CEMENT CLINKER: REDUCING THE ENVIRONMENTAL IMPACT OF THE PRODUCTION PROCESS." Doctoral thesis, Università degli Studi di Milano, 2017. http://hdl.handle.net/2434/478904.

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Ordinary Portland cement (OPC) clinker production process has a remarkable environmental impact in terms of energy consumption, raw materials exploitation and greenhouse gases emissions. The present thesis deals with advances in the characterization and formulation of OPC clinker raw meals, the limestone and clay minerals mixture that is thermally treated in the rotary kiln to obtain cement clinker. The purpose is to better understand some key points of the clinkerization, in order to reduce the environmental impact of the production process. First, the influence of limestone petrography and c

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26

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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27

Ozer, Muhammed Said. "Production And Characterization Of Magnesium Oxychloride Cement Based Polishing Bricks For Polishing Of Ceramic Tiles." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610266/index.pdf.

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Magnesium oxychloride cement (MOC) based grinding and polishing bricks developed for polishing of granite based ceramic tiles were produced and characterized. For surface grinding 46 and 180 grit size SiO2 powder embedded MOC based abrasive bricks<br>for polishing 600 and 1200 grit size SiC powder embedded MOC based abrasive bricks followed by neat (unreinforced) MOC pastes were applied on ceramic tiles. Three different neat MOC pastes depending on MgO/MgCl2 molar ratio in the paste e.g. 6/1, 7/1, and 8/1, were formed and evaluated. Grinding bricks were formed by adding 30 weight percentage,

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28

Soner, Ilker. "Utilization Of Fluidized Bed Combustion Ashes As Raw Material In The Production Of A Special Cement." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610651/index.pdf.

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Fluidized bed combustion (FBC) ashes containing significant amount of free CaO and CaSO4 in addition to valuable inorganic acidic oxide ingredients such as SiO2, Fe2O3 and Al2O3 can be utilized as potential raw materials in the production of nonexpansive belite-rich calcium sulfoaluminate cement which is one of the special cement type of sulfoaluminate-belite cements having performance characteristics similar to those of ordinary portland cement besides lower energy requirements and CO2 emissions during manufacturing. Therefore, in this thesis study, possibility of producing non-expansive beli

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29

Palovčík, Jakub. "Možnosti využití cihelného obrusu v systémech na bázi portlandského cementu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-295655.

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This thesis deals with possibilities of using brick-grind-dust which is a secondary product from manufacturing of grinded bricks. A boom in this method of masonry is connected with an increase of production of these secondary materials. These secondary materials are partly returned to brick manufacturing and partly buried in a landfill site. Due to their composition and origin, these materials are potentially pozzolan active, making them interesting for applications in hydraulic binders. The aim of the work was to study the physical and chemical properties of several brick-grind-dust and brick

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30

Xu, Vita. "The POTENTIAL OF MICROALGAE TECHNOLOGY AT THE CEMENT INDUSTRY ON GOTLAND." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445509.

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Due to the increasing climate change concerns, biofuels have attracted more attention in the energy field as potential alternative energy sources. Particularly, microalgal biofuel has stood out because of its higher fuel yield potential and lower water and land demand than terrestrial biomass. Because of its outstanding photosynthetic efficiency, the microalgal technology is also investigated by researchers around the world as a potential biological solution for carbon capturing in the industrial sector. To explore the prospects of microalgal technology in a local context, this research lays i

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31

Hao, Rui. "Investigation into the production of carbonates and oxides from synthetic brine through carbon sequestration." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/267931.

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The cement industry contributes around 5-7% of man-made CO2 emissions globally because of the Portland Cement (PC) production. Therefore, innovative reactive magnesia cement, with significant sustainable and technical advantages, has been proposed by blending reactive MgO and hydraulic binders in various proportions. MgO is currently produced from the calcination of magnesite (MgCO3), emitting more CO2 than the production of PC, or from seawater/brine which is also extremely energy intensive. Hence this research aims to investigate an innovative method to produce MgO from reject brine, a waste

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32

Clark, Michael Colin. "Research and experience in the production and quality conrol of white Portland cement in Ras Al Khaimah." Thesis, University of Salford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241531.

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33

Fridrich, Jakub. "Cihelný recyklát jako surovina pro výrobu pálících pomůcek pro cihlářský průmysl." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401935.

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The focus of this thesis is the study of behavior of brick waste in the mixture with high alumina cement. The result of this research should be a draft of a composition and production process for material that could partly or fully substitute forging accessories in the brick production industry. The aim of this work is to verify the use of brick waste for such purpose. Usage of brick waste for refractories can help the current long-term effort for wasteless production processes.

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Maneschijn, Raynard. "The development of a system to optimise production costs around complex electricity tariffs / R. Maneschijn." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9675.

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Rising South African electricity prices and reduced sales following the 2008 economic recession have led cement manufacturers to seek ways to reduce production costs. Prior research has shown that reduced electricity costs are possible by shifting load from expensive Eskom peak pricing periods to lower cost times. Due to the complex considerations and variables in cement production, this is not typically implemented. Several simulation and optimisation models are available in literature to schedule plant operation in an electricity cost effective manner. However, these models have not been im

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35

Limeneh, Mamaru. "The challenge of industrial development in Sub-Saharan Africa : a study of the cement production in Kenya and Ethiopia." Thesis, London South Bank University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245064.

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Havelka, Jaroslav. "Studium možností separace chloridů z by-passových odprachů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316367.

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The thesis deals with the study and the characterization of bypass dusts from the cement plants. The aim of the thesis is to search for the possibilities of the usage of that secondary product by means of the cement production. The thesis focuses mainly on the determination of the amount of soluble substances in the dusts, the dependence of dissolution of the soluble share on water – dust ratio, the dependence of dissolution time on the yield of the soluble share and the influence of the temperature on the yield. The physical and chemical properties of the investigated samples taken from sever

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Brzobohatý, Lukáš. "Odloučení dopravního vzduchu surovinové moučky." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230833.

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The dissertation is focused on the applied technical and economic analysis of the influence separation of transport air from raw meal on the economy clinker/cement production, in specific cement production. The analysis is performed on the basis of a detailed understanding and analysis of the function of each component of the technology of cement production, which are affected by separation of transport air from raw meal, mainly the dosing and preheat system of the raw meal. The results of the analysis show a significant effect (impact) separation of transport air on the production costs.

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Rejnuš, Vojtěch. "Využití odpadního tepla spalin pro výrobu elektrické energie." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231821.

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Methods of utilization waste heat are increasingly on the rise and can be applied in many technologies. One of the technologies is the manufacture of cement, which is focused issue of work. Within the solution, and for understanding the problem is outlined cement production process and the analysis of the waste heat from the process, on this basis are selected a suitable method using waste heat with a closer focus on ORC units. After following evaluation and selection of the most suitable unit is made design, calculation and construction of heat exchangers. The result is the evaluation of the

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Cajazeira, Maurício de Oliveira. "Impactos e conflitos sócioambientais na comunidade do entorno da fábrica de cimento." Universidade Federal de Sergipe, 2011. https://ri.ufs.br/handle/riufs/4184.

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The industrial sector causes the most damage to the enviroment, either by their production processes or production of polluting products, some having problems of disposal after use. There is some difficulty in combining industrial production growth with environmental preservation. The collective welfare depends increasingly on growth of output, bringing conflict in man's relationship with his environment. A cement factory was implanted in the town of Nossa Senhora do Socorro due to the discovery of a subsoil rich in raw material (limestone), supported by hopes of providing better economic and

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Hlaváček, Jaroslav. "Příměsi ovlivňující tuhnutí portlandského cementu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-216898.

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During the production of concrete is important the careful selection of raw materials. Nowadays, we are trying in the production to minimize the economic burden and to maximize the use of secondary raw materials. This work is focused on the use of secondary raw materials from the energy industry in construction for the preparation of hydraulic binders. As the main raw materials were used different power plant fly ash from fluidized combustion. The composition of these secondary materials is quite different from conventional high-temperature ash, due to mixing with water they solidify and harde

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Olsson, Anton, and Johan Welltén. "Mognadsmodell - Möjligheter inom industri 4.0 En förstudie på Cementa AB Slite." Thesis, KTH, Hållbar produktionsutveckling (ML), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276250.

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Detta kandidatexamensarbete är en förstudie utfört på Cementa AB:s fabrik i Slite, Gotland, och grundar sig i att Cementa AB, Sveriges enda tillverkare av cement, står inför en omställning till helhetskonceptet Industri 4.0 som bygger på tekniker och principer för automation och digitalisering. Fabriken står även inför en hållbarhetsomställning, då branschen bidrar med stora koldioxidutsläpp genom sin tillverkning. Målet med kandidatexamensarbetet är att analyseravar Cementa AB står inför en Industri 4.0 omställning och även undersöka om det har någon koppling till deras hållbarhetsarbete. För

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Kurkcu, Mehmet. "Utilization Of Fly Ash From Fluidized Bed Combustion Of A Turkish Lignite In Production Of Blended Cements." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607507/index.pdf.

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Fly ashes generated from fluidized bed combustion of low calorific value, high ash content Turkish lignites are characterized by high content of acidic oxides, such as SiO2, Al2O3 and Fe2O3, varying in the range 50-70%. However, there exists no study for the investigation of the possibility of using these ashes as concrete admixture. Therefore, in this study, characterization of fly ashes from fluidized bed combustion of a Turkish lignite and evaluation of these fly ashes as a substitute for Portland cement in production of pastes and mortars were carried out. The samples were subjected to ch

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Mungyeko, Bisulandu Baby-Jean Robert. "Modélisation de l'apport d'énergie par combustibles alternatifs dans les fours tournants de production de ciment." Thesis, Pau, 2018. http://www.theses.fr/2018PAUU3001/document.

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En raison de l'épuisement des combustibles fossiles et en raison de son coût croissant, les déchets ont été utilisés comme combustibles alternatifs dans les fours rotatifs à ciment pendant plusieurs années. Afin de répondre aux exigences de protection de l'environnement et de qualité du produit final, il est nécessaire de comprendre et de quantifier les différents processus intervenant dans le four. Dans le cadre de cette thèse, nous nous sommes intéressés à la substitution partielle des déchets (pneus usés et Refuse Derived Fuel « RDF ») et biomasse (résidus d’agriculture) dans les fours tour

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Lindeskov, Daniel, and Jimmie Modin. "Uttorkning av betong : Simuleringar i programvaran PPB jämförs med fuktmätningar i betongprover med Bascement." Thesis, Karlstads universitet, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-74536.

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Cementproduktion står idag för totalt 5 % av koldioxidutsläppen globalt, vilket t.ex. är mer än dubbelt så mycket som den globala flygindustrin. Nya cement- och betongrecept, med nya egenskaper, utvecklas med målet att minska klimatbelastningen. I produkten Bascement ersätts delar av klimatbelastande cementklinker med mineraltillsatsen flygaska, en restprodukt från andra industrier. Detta ska alltså leda till en minskad klimatbelastning. Betong med Bascement har dock orsakat förseningar och extra kostnader i produktion på grund av långa torktider som inte stämt överens med simuleringar i Torka

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Palomino, Seguín Daniel Jesús. "Mining or industrial activity? The Legal Qualification of the Cement Manufacturing Process and the Bet for a Certain Normative Framework that Clarifies the Competences of the Ministry of Energy and Mines and the Ministry of Production." Derecho & Sociedad, 2015. http://repositorio.pucp.edu.pe/index/handle/123456789/119087.

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Mining or industrial activity? This is not only an ancient question in Peruvian mining sector but a key issue for domestic and foreign private investment on cement. Since few years ago, cement manufacturing process has been being qualified and regulated by the Peruvian Mining Authority as a mining benefit process which implies the obligation to obtain a benefit mining concession previously. However, upon a review of the technical process aspects, the legal framework in force and a recent judgment enacted by the Constitutional Court of Peru regarding this topic, the position traditionally assum

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Koblov, Alexander. "Sonochemical reduction of carbon dioxide." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/2169.

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Emissions from the combustion of fossil fuels and cement production are responsible for approximately 75% of the increase of carbon dioxide (CO2) concentration in the atmosphere. 80% of the generated world energy is produced by burning fossil fuels (IPCC 2007) and such tendency is likely to remain unchanged in the nearest future. These number look more intimidating if consider the fact that in 2030, global energy demand was estimated to increase by 57% in comparison to 2004 (from 14.9 terrawatts (TW) in 2004 to 23.4 TW in 2030; International Energy Outlook 2007). Moreover, only 45% of CO2, rel

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FURCAS, CARLA. "Sustainable management of natural stone waste. A proposed re-use for the production of mortars and the assessment of their potential CO2 sequestration capacity." Doctoral thesis, Università degli Studi di Cagliari, 2015. http://hdl.handle.net/11584/266806.

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Quarrying activity usually generates significant amounts of waste. Generally, the processed quarrying production accounts for 30% of total stone extracted, whilst waste (quarrying waste and processing waste) amounts to about 70% of total stone extracted. Not only could coping with waste be environmentally damaging, but it is also economically expensive for the stone industry, which in addition has to deal with the economic loss caused by the lower efficiency of quarrying. Some re-uses of natural stone waste, such as the production of aggregates, have already been investigated, but they a

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Heise, Andre Falleiros. "Desenho do processo e qualidade na construção do painel monolitico de solo-cimento em taipa de pilão." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257845.

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Orientador: Andre Munhoz de Argollo Ferrão<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-11T13:09:42Z (GMT). No. of bitstreams: 1 Heise_AndreFalleiros_M.pdf: 6063672 bytes, checksum: bed385d402a20c2a72ee8254c79b8275 (MD5) Previous issue date: 2004<br>Resumo: O universo da construção civil vem se tornando o foco principal das pesquisas científicas e tecnológicas nos diversos campos do conhecimento humano, por ser um dos responsáveis pelo alto grau de problemas ambientais e sociais. A

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Ganaw, Abdelhamed I. "Rheology of grout for preplaced aggregate concrete : investigation on the effect of different materials on the rheology of Portland cement based grouts and their role in the production of preplaced aggregate concrete." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5766.

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Preplaced aggregate concrete (PAC) is produced by grouting high workability cement based grouts among the voids of compacted coarse aggregate mass. Because of its low shrinkage, PAC has been used for many repair jobs like; tunnel lines, dams and bridge piers. Moreover, it has been used for underwater construction. Grout has a major effect on the properties of produced PAC and well defined grout controls the properties of resulted PAC. The effect of types and amount of powder materials, admixtures, sand and water content on the properties of fresh and hardened grout for the production of PAC ha

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Junior, Nelson Kadel. "Logística reversa para substituição de combustíveis na indústria cimenteira por coprocessamento em forno de clinquer." Universidade do Vale do Rio dos Sinos, 2012. http://www.repositorio.jesuita.org.br/handle/UNISINOS/4410.

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Submitted by William Justo Figueiro (williamjf) on 2015-07-10T22:43:09Z No. of bitstreams: 1 42b.pdf: 11938841 bytes, checksum: 548f5c4ae8b13931af52bc417ff2da4f (MD5)<br>Made available in DSpace on 2015-07-10T22:43:09Z (GMT). No. of bitstreams: 1 42b.pdf: 11938841 bytes, checksum: 548f5c4ae8b13931af52bc417ff2da4f (MD5) Previous issue date: 2012<br>Nenhuma<br>O objetivo desta dissertação de mestrado é estudar um projeto de coprocessamento de resíduos, e desenvolver um meio de torná-lo sustentável economicamente, à luz das teorias sobre logística reversa. Este projeto traz consigo resultad

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