Download or read book Mechanical Characteristics of Organically Modified Fly Ash kaolinite Mixtures written by Xin Kang and published by . This book was released on 2015 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Fly ash is a hazardous waste material to the environment. Beneficial reuse of fly ash, however, brings economic and environmental benefits, i.e., decreases the cost of disposal, reduces greenhouse gas emission, and improves mechanical properties of construction materials. Due to the lack of pozzolanic properties, the reuse rate of Class F fly ash in geotechnical engineering is relatively low (ACAA 2013). In order to promote the effectiveness and sustainability of high volume reuse of class F fly ash in geotechnical engineering, biopolymers (Chitosan, and Xanthan gum) and synthetic polymers (Polyethylene Oxide, PEO) were used instead of the traditional stabilizers to improve the engineering behaviors of fly ash-kaolinite mixtures. The effects of polymers on microstructure development and geotechnical properties (i.e., stiffness, stiffness anisotropy and strength) of fly ash-kaolinite mixtures were measured in the laboratory. Shear wave velocity (V[subscript s]) and V[subscript s] anisotropy of organically modified fly ash-kaolinite mixtures were investigated by a self-developed floating wall-type consolidometer bender element testing system. Vs results showed that PEO and chitosan increased Vs of the fly ash-kaolinite mixtures, while xanthan gum decreased V[subscript s]. V[subscript s] anisotropy of the fly ash-kaolinite mixtures was decreased by the addition of polymers. Critical-state friction angles of fly ash-kaolinite mixtures increased with the addition of PEO and chitosan, while decreased with xanthan gum. Polymer bridging and columbic interactions, and the subsequent changes in size and fabric of kaolinite are the major influencing mechanisms. Physicochemical effects and the fly ash ratio also contributed to the observed changes"--Abstract, page iii.
Download or read book Mechanical Properties and Performance of Engineering Ceramics and Composites IV Volume 30 Issue 2 written by Dileep Singh and published by John Wiley & Sons. This book was released on 2009-12-15 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gain insight into the mechanical properties and performance of engineering ceramics and composites. This collection of articles illustrates the Mechanical Behavior and Performance of Ceramics & Composites symposium, which included over 100 presentations representing 10 countries. The symposium addressed the cutting-edge topics on mechanical properties and reliability of ceramics and composites and their correlations to processing, microstructure, and environmental effects.
Download or read book Natural Fiber Reinforced Geopolymer Composites written by It-Meng Low and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book provides an overview on the latest advances in the synthesis, characterization and mechanical properties of geopolymers reinforced with natural fibers such as pulp-fiber, cotton, sisal, flax, and hemp"--
Download or read book Rubber Nano Blends written by Gordana Markovic and published by Springer. This book was released on 2016-11-25 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the preparation, characterization and applications of rubber based nano blends. Rubbers from natural and synthetic polymers and their blends are discussed in the individual chapters, including nitrile, polyurethane, chlorosulphonated, polybutadiene, styrene butadiene, polychloroprene rubbers. In each chapter, contributors from academia and industry describe the preparation and characterization of the rubber blends. Therefore, a variety of characterization methods like tensile testing, differential scanning calorimetry, dynamical mechanical analysis, thermogravimetric analysis, electron microscopy, scattering and diffraction techniques, and rheology measurements are utilized. The authors evaluate the properties of the different materials and discuss numerous fields of application, ranging from biomedicine, packaging, coatings and automobile to aerospace.
Download or read book Reduction of Expansive Index of Kaolinite and Bentonite Clay by Using Sand and Fly Ash Mixtures written by Ramesh KC and published by . This book was released on 2014 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Expansion or swelling behavior of expansive soil has always created problems in the field of geotechnical engineering. When any construction has been carried out on expansive soil without pre-knowledge of their properties under various environmental conditions, the damage is severe. One of the methods to find out swelling potential of expansive soil is the expansive index (EI). The present study investigates the reduction of EI for the two commercially available expansive soils i.e., kaolinite and bentonite when mixed with Ottawa sand and Class C fly ash. The percentages of Ottawa sand and Class C fly ash mixed with kaolinite and bentonite were 0 to 50% by weight. The results show that there is a significant reduction in the swelling properties of expansive soil with the addition of Ottawa sand and Class C fly ash. The reduction in expansive index ranged approximately from 10 to 50% and 4 to 49% for kaolinite and bentonite, respectively. Also the maximum swelling pressure of kaolinite and bentonite soil decreased approximately 93% and 64%, respectively with the addition of various percentages of Ottawa sand and Class C fly ash. These results help to identify the swelling potential and swelling pressure of expansive soil with different percentages of sand and fly ash which will be beneficial to the geotechnical engineer. Standard index properties test such as liquid limit, plastic limit and shrinkage limit test was conducted to see the characteristic of expansive soil when mixed with less expansive sand and Class C fly ash. Also, for these expansive soils one dimensional (1-D) consolidation characteristics was studied with sand and Class C fly ash mixtures and the results were compared with pure kaolinite and bentonite soil. Pre-consolidation (P c ) behavior, compression index (Cc ) and recompression or swelling index (Cs ) properties were also studied for the different percentages of sand and Class C fly ash with expansive soil.
Download or read book Alkali Activated Materials written by John L. Provis and published by Springer Science & Business Media. This book was released on 2013-11-19 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a State of the Art Report resulting from the work of RILEM Technical Committee 224-AAM in the period 2007-2013. The Report summarises research to date in the area of alkali-activated binders and concretes, with a particular focus on the following areas: binder design and characterisation, durability testing, commercialisation, standardisation, and providing a historical context for this rapidly-growing research field.
Download or read book Particle Size Enlargement written by C. E. Capes and published by Elsevier. This book was released on 2013-10-22 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Powder Technology, Volume 1: Particle Size Enlargement is the first of a series which will together form a Handbook of Powder Technology, primarily intended for engineers and scientists working in industry. The scope of the Handbook can be defined as being concerned with that part of chemical engineering which deals with processes involving the handling and treatment of material in solid particulate form. This book deals with methods used to create larger entities from fine particles so that the bulk properties of particulates can be improved. These so-called ""size enlargement"" methods evidently concern a broad spectrum of technical disciplines and industries ranging from the relatively small scale requirements of pharmaceutical manufacturers through the tonnage requirements of the fertilizer and minerals processing industries. A primary objective in preparing this book was to present a generalized account of the many size enlargement techniques scattered throughout these diverse industries, with emphasis on similarities and unifying characteristics whenever possible. The book devotes one chapter to each of the principal methods used to bring particles together into agglomerates: agitation methods— tumbling agglomeration, agitation methods—mixer agglomeration, pressure methods, thermal methods, spray and dispersion methods, and agglomeration from liquids.
Download or read book Handbook of Alkali Activated Cements Mortars and Concretes written by F. Pacheco-Torgal and published by Elsevier. This book was released on 2014-11-20 with total page 855 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an updated state-of-the-art review on new developments in alkali-activation. The main binder of concrete, Portland cement, represents almost 80% of the total CO2 emissions of concrete which are about 6 to 7% of the Planet’s total CO2 emissions. This is particularly serious in the current context of climate change and it could get even worse because the demand for Portland cement is expected to increase by almost 200% by 2050 from 2010 levels, reaching 6000 million tons/year. Alkali-activated binders represent an alternative to Portland cement having higher durability and a lower CO2 footprint. Reviews the chemistry, mix design, manufacture and properties of alkali-activated cement-based concrete binders Considers performance in adverse environmental conditions. Offers equal emphasis on the science behind the technology and its use in civil engineering.
Download or read book Treatment and Utilization of Combustion and Incineration Residues written by Lei Wang and published by Elsevier. This book was released on 2024-05-31 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treatment and Utilization of Combustion and Incineration Residues introduces state-of-art strategies for combustion and incineration solid residue management and utilization. The book also reviews current technologies for pollutant removal and control of combustion and incineration residues. Recycling ashes and slags in sustainable construction materials are also evaluated on environmental impacts and engineering values, and the use of different ashes and slags in cement clinker production is classified based on the sources and properties of the residues. In addition, the recovery of valuable metals and inorganic elements is also discussed. Finally, Treatment and Utilization of Combustion and Incineration Residues examines the latest understanding of reaction mechanisms of various treatment technologies is elaborated to foster the future design of treatment technologies and the actualization of sustainable management for combustion/incineration residues. Provides systematical classification and introduction of combustion/incineration solid residues Introduces the detoxification and purification technologies of hazardous combustion/incineration ashes and slags Highlights the treatment and recycling approaches of combustion and incineration residues in cement clinker production and sustainable construction materials manufacture Provides systematical classification and introduction of combustion/incineration solid residues Introduces the detoxification and purification technologies of hazardous combustion/incineration ashes and slags Highlights the treatment and recycling approaches of combustion and incineration residues in cement clinker production and sustainable construction materials manufacture
Download or read book Ceramic Abstracts written by and published by . This book was released on 2001 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ground Improvement and Reinforced Soil Structures written by C. N. V. Satyanarayana Reddy and published by Springer Nature. This book was released on 2021-07-27 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprises the select proceedings of the Indian Geotechnical Conference (IGC) 2020. The contents focus on recent developments in geotechnical engineering for sustainable tomorrow. The volume covers the topics related advances in ground improvement of weak foundation soils for various civil engineering projects and design/construction of reinforced soil structures with different fill materials using synthetic and natural reinforcements in different forms.
Download or read book Applied Environmental Materials Science for Sustainability written by Kobayashi, Takaomi and published by IGI Global. This book was released on 2016-12-21 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing presence of biomass and waste has caused significant changes to the environment. With the ubiquity of these materials, there is an increasing need for proper disposal and reuse of these resources. Applied Environmental Materials Science for Sustainability is a key resource on the latest advancements in environmental materials, including the utilization of biomass and waste for advanced materials. Highlighting innovative studies on renewable resources, green technology, and chemical modification, this book is an ideal reference source for academics, researchers, professionals, and graduate students in the field of environmental and materials sciences and technologies.
Download or read book Foundations on Expansive Soils written by Fu Hua Chen and published by Elsevier. This book was released on 2012-12-02 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foundations on Expansive Soils provides the practicing engineer with a summary of the state-of-the-art of expansive soils and practical solutions based on the author's experience. The book is organized into two parts. Part I deals with theory and practice, and summarizes some of the theoretical physical properties of expansive soils. It also discusses various techniques employed to found structures on expansive soils such as drilled pier foundation, mat foundation, moisture control, soil replacement, and chemical stabilization. Topics covered include the origin, mineralogical composition, and the basic structure of expansive soils; the migration of water, swelling potential, and swelling pressure; site investigations and laboratory testing; moisture control; and soil stabilization. Part II presents case studies on the following: distress caused by pier uplift; distress caused by the improper design and construction of a drilled pier foundation system; distress caused by heaving of footing pad and floor slab; distress caused by heaving of continuous footings; and distress caused by a rise of ground water.
Download or read book Structural Concrete written by M. D. Kotsovos and published by Thomas Telford. This book was released on 1995 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shows the unifying generality of the proposed approach and the reliability of the ensuing computer package, for which the sole input is the specified cylinder strength of concrete and the yield is the stress of steel. This book offers an understanding of structural concrete behaviour, and illustrates the revision required for improving methods.
Download or read book Geopolymers written by J L Provis and published by Elsevier. This book was released on 2009-06-22 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: A geopolymer is a solid aluminosilicate material usually formed by alkali hydroxide or alkali silicate activation of a solid precursor such as coal fly ash, calcined clay and/or metallurgical slag. Today the primary application of geopolymer technology is in the development of reduced-CO2 construction materials as an alternative to Portland-based cements. Geopolymers: structure, processing, properties and industrial applications reviews the latest research on and applications of these highly important materials.Part one discusses the synthesis and characterisation of geopolymers with chapters on topics such as fly ash chemistry and inorganic polymer cements, geopolymer precursor design, nanostructure/microstructure of metakaolin and fly ash geopolymers, and geopolymer synthesis kinetics. Part two reviews the manufacture and properties of geopolymers including accelerated ageing of geopolymers, chemical durability, engineering properties of geopolymer concrete, producing fire and heat-resistant geopolymers, utilisation of mining wastes and thermal properties of geopolymers. Part three covers applications of geopolymers with coverage of topics such as commercialisation of geopolymers for construction, as well as applications in waste management.With its distinguished editors and international team of contributors, Geopolymers: structure, processing, properties and industrial applications is a standard reference for scientists and engineers in industry and the academic sector, including practitioners in the cement and concrete industry as well as those involved in waste reduction and disposal. Discusses the synthesis and characterisation of geopolymers with chapters covering fly ash chemistry and inorganic polymer cements Assesses the application and commercialisation of geopolymers with particular focus on applications in waste management Reviews the latest research on and applications of these highly important materials
Download or read book Urban Sustainability and Energy Management of Cities for Improved Health and Well Being written by González-Lezcano, Roberto Alonso and published by IGI Global. This book was released on 2022-04-29 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global environmental challenges such as climate change, rapid urbanization, and human influence on the environment continue to grow. Many of these resulting risks lead to diseases and negative impacts on health and quality of life. It is now essential to develop more sustainable and healthy environments with greater focus on prevention by targeting the root causes of disease. Urban communities comprise a high concentration of services, consumption, and waste and represent an unsustainable pattern of urbanization that accelerates the decline of global ecosystems services rather than supporting them through the compensatory contributions of peri-urban and rural areas. By focusing on reducing environmental and social risk factors, almost a quarter of the global burden of disease can be avoided through better health promotion strategies and improved prevention and hygiene measures. Urban Sustainability and Energy Management of Cities for Improved Health and Well-Being highlights the interdisciplinary connections between the environment and human health, focusing on new ideas and suggestions for promoting both sustainable development and human health and well-being. It creates a new approach to the analysis of human impacts on the natural environment and, conversely, determines how the environment can modulate human lifestyles and health. Furthermore, this book explores opportunities and challenges urban communities face as they seek to become sustainable systems embedded in their diverse and complex social and environmental contexts. Covering topics such as affordable housing, ecological waste materials, and urban health, this premier reference source is an essential resource for environmentalists, civil engineers, government officials, architects, libraries, students and educators of higher education, urban planners, researchers, and academicians.
Download or read book Geopolymer Chemistry and Applications written by Joseph Davidovits and published by . This book was released on 2011 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: What can be done about the major concerns of our Global Economy on energy, global warming, sustainable development, user-friendly processes, and green chemistry? Here is an important contribution to the mastering of these phenomena today. Written by Joseph Davidovits, the inventor and founder of geopolymer science, it is an introduction to the subject for the newcomers, students, engineers and professionals. You will find science, chemistry, formulas and very practical information (including patents' excerpts) covering: - The mineral polymer concept: silicones and geopolymers, - Macromolecular structure of natural silicates and aluminosilicates, - Scientific Tools, X-rays, FTIR, NMR, - The synthesis of mineral geopolymers, Poly(siloxonate) and polysilicate, soluble silicate, Chemistry of (Na, K)-oligo-sialates: hydrous alumino-silicate gels and zeolites, Kaolinite / Hydrosodalite-based geopolymer, Metakaolin MK-750-based geopolymer, Calcium-based geopolymer, Rock-based geopolymer, Silica-based geopolymer, Fly ash-based geopolymer, Phosphate-based geopolymer, Organic-mineral geopolymer, - Properties: physical, chemical and long-term durability, - Applications: Quality controls, Development of user-friendly systems, Castable geopolymer, industrial and decorative applications, Geopolymer / fiber composites, Foamed geopolymer, Geopolymers in ceramic processing, Manufacture of geopolymer cement, Geopolymer concrete, Geopolymers in toxic and radioactive waste management. It is a textbook, a reference book instead of being a collection of scientific papers. Each chapter is followed by a bibliography of the relevant published literature including 80 patents, 125 tables, 363 figures, 560 references, 720 authors cited, representing the most up to date contributions of the scientific community. The industrial applications of geopolymers with engineering procedures and design of processes are also covered in this book
