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Optimization Of Concrete Mixtures For Use In Structural Elements
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Book Synopsis Optimization of Concrete Mixtures for Use in Structural Elements by : Waleed Faleh Almutairi
Download or read book Optimization of Concrete Mixtures for Use in Structural Elements written by Waleed Faleh Almutairi and published by . This book was released on 2017 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: Portland cement is an essential ingredient in concrete. The use of cement is to enhance the strength as well as other hardened properties of concrete mixtures. Determining the accurate amount of cement is important because the required strength may not be achieved if not enough cement is used. By contrast, when using too much cement, concrete cracking may occur that leads to reducing durability. Researchers at the University of Arkansas (UA) have shown that many bridge decks achieve their 28 day design strength of 4000 psi by 7 days of age. Bridge decks having high strength may experience cracking, which affects the durability. The Arkansas State Highway and Transportation Department (AHTD) classifies two types of concrete mixtures that can be used in bridges. The first is Class S concrete, and the second is Class S(AE). Class S is used for the structural components and does not contain air entrainment while Class S (AE) is mainly used for bridge decks and contains air entrainment. AHTD requires the same minimum cementitious material content for both classes of concrete. The purpose of this research is to determine if the cementitious material content of Class S mixtures can be reduced while still meeting AHTD specifications. The research program examined cementitious material content, Class C fly ash content, and water to cementitious material ratio (w/cm) . For all mixtures, selected fresh and hardened concrete properties were measured to ensure that they complied with AHTD requirements.
Book Synopsis Optimization Aided Design by : Georgios Gaganelis
Download or read book Optimization Aided Design written by Georgios Gaganelis and published by John Wiley & Sons. This book was released on 2022-01-25 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimierungsgestütztes Entwerfen und Bemessen liefert neuartige Methoden, bewehrten Beton besonders effizient einzusetzen. Dabei wird die mathematische Optimierung auf die praktischen Probleme des Betonbaus angewendet. Ziel ist es, sparsam mit dem weltweit meistverwandten Baustoff Stahlbeton umzugehen und damit den CO2-Ausstoß aus der Zement- und Stahlherstellung und den Ressourcenverbrauch an Kies, Sand und Wasser substanziell zu reduzieren. Drei Themenbereiche sind angesprochen. Erstens, die Strukturfindung, also die Frage nach der richtigen äußeren Form, dass schlanke, nach dem Kraftfluss ausgerichtete Tragwerke entstehen. Baustoffgerecht sind sie weitgehend auf Druck beansprucht. Zweitens, die Bewehrungsführung, die sich am inneren Kraftfluss orientiert. Vorteile ergeben sich gerade für Scheiben, volumenartige Bauteile, an Lasteinleitungsbereichen und Aussparungen. Es entstehen anschauliche, direkt in Bewehrungen umsetzbare Fachwerkmodelle. Dritter Entwicklungsschritt ist die Behandlung von Querschnitten. Sie werden in ihrer Form optimiert und in ihrer Bewehrung bemessen. Dies gilt auch für anspruchsvolle Beanspruchungen (zweiachsige Biegung) und nahezu beliebige Formen. Eine Parametrisierung ermöglicht die allgemeingültige Übertragung auf ganze Klassen von Querschnitten. Die optimierungsgestützten Methoden werden vertieft und anschaulich beschrieben. Sie sind universell anwendbar und unabhängig von Normen, Betonarten und Bewehrungen. Sie gelten für normalfeste bis zu ultrahochfesten Betonen, für Bewehrungen aus Stahl, Carbon oder Glasfasern und für Bewehrungsstäbe als auch -fasern. Zahlreiche Abbildungen und Berechnungsbeispiele verdeutlichen die Anwendung. Zudem werden praktische Umsetzungen vorgestellt, darunter ultra-leichte Stahl-Beton-Balken, schlanke Solarkollektoren aus Beton und verbesserte Bewehrungslayouts für Tunnelschalen. Das Buch richtet sich gleichermaßen an Studierende, Forscher und Praktiker.
Book Synopsis Optimization Methods for Material Design of Cement-based Composites by : A.M. Brandt
Download or read book Optimization Methods for Material Design of Cement-based Composites written by A.M. Brandt and published by CRC Press. This book was released on 1998-06-18 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a clear, comprehensive introduction to the subject. Different problems of optimization are considered and illustrated with examples. Large sets of new experimental data are presented and discussed.
Book Synopsis Performance-Based Optimization of Structures by : Qing Quan Liang
Download or read book Performance-Based Optimization of Structures written by Qing Quan Liang and published by CRC Press. This book was released on 2005-02-25 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance-Based Optimization of Structures introduces a method to bridge the gap between structural optimization theory and its practical application to structural engineering. The Performance-Based Optimization (PBO) method combines modern structural optimisation theory with performance based design concepts to produce a powerful technique for use in structural design. This book provides the latest PBO techniques for achieving optimal topologies and shapes of continuum structures with stress, displacement and mean compliance constraints. The emphasis is strongly placed on practical applications of automated PBO techniques to the strut-and-tie modelling of structural concrete, which includes reinforced and prestressed concrete structures. Basic concepts underlying the development of strut-and-lie models, design optimization procedure, and detailing of structural concrete are described in detail. Alternative approaches to topology optimization are also introduced. The book contains numerous practical design examples illustrating the nature of the load transfer mechanism of structures.
Book Synopsis Designing and Optimizing of Concrete Mix Proportion Using Statistical Mixture Design Methodology by : Media Kharazi
Download or read book Designing and Optimizing of Concrete Mix Proportion Using Statistical Mixture Design Methodology written by Media Kharazi and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design and Control of Concrete Mixtures by : Steven H. Kosmatka
Download or read book Design and Control of Concrete Mixtures written by Steven H. Kosmatka and published by . This book was released on 1988 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Portland Cement Association reference, dealing with fundamentals, cold weather concreting, curing, admixtures, aggregates, mixing, and much more.
Book Synopsis Optimization Methods for Material Design of Cement-based Composites by : A.M. Brandt
Download or read book Optimization Methods for Material Design of Cement-based Composites written by A.M. Brandt and published by CRC Press. This book was released on 1998-06-18 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a clear, comprehensive introduction to the subject. Different problems of optimization are considered and illustrated with examples. Large sets of new experimental data are presented and discussed.
Book Synopsis Process Optimization for 3D Printing of Cementitious Materials by : Rasem Alrashdi
Download or read book Process Optimization for 3D Printing of Cementitious Materials written by Rasem Alrashdi and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three-dimensional (3D) concrete printers are extensively portable; they can save construction time and reduce labor costs. This technology is incredibly capable of creating complex elements with different structural scales. Some 3D concrete printers use a gantry system, while other printers may use a robotic arm or generalized Stewart platforms. These systems allow the freedom of movements to create desired concrete structures. The structures are printed layer-by-layer using additive manufacturing methods to ensure the overlay between the concrete layers. The components of a 3D printer play an important role in the print quality. For instance, the nozzle shape has a direct influence on the overall form of the structure, stress distribution, and durability of the printed element. Since the 3D concrete printers are at a very early development stage, part optimization is crucial for the ease of construction. Therefore, the first part of this research study focuses on developing different nozzle forms, extruder control system, and pump parameters. The outcome of the first part provides insights into 3D concrete printing protocols and can be used to optimize the process. The second part of this study focuses on the development of a novel composite material that meets the requirements used in the construction field. This research focuses on 3D concrete printing features, such as extruder and nozzle design, and their effect on the printed structures, while evaluating printing strategies using a developed concrete mixture that has the desired mechanical properties.
Author :fib Fédération Internationale du béton Publisher :fib Fédération Internationale du béton ISBN 13 :2883941114 Total Pages :70 pages Book Rating :4.8/5 (839 download)
Book Synopsis Integrated life cycle assessment of concrete structures by : fib Fédération Internationale du béton
Download or read book Integrated life cycle assessment of concrete structures written by fib Fédération Internationale du béton and published by fib Fédération Internationale du béton. This book was released on 2013-09-03 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete is after water the second most used material. The production of concrete in the industrialized countries annually amounts to 1.5-3 tonne per capita and is still increasing. This has significant impact on the environment. Thus there is an urgent need for more effective use of concrete in structures and their assessment. The scope of activities of the fib Task Group 3.7 was to define the methodology for integrated life-cycle assessment of concrete structures considering main essential aspects of sustainability such as: environmental, economic and social aspects throughout the whole life of the concrete structure. The aim was to set up basic methodology to be helpful in development of design and assessment tools focused on sustainability of concrete structure within the whole life cycle. Integrated Life Cycle Assessment (ILCA) represents an advanced approach integrating different aspects of sustainability in one complex assessment procedure. The integrated approach is necessary to insure that the structure will serve during the whole expected service life with a maximum functional quality and safety, while environmental and economic loads will be kept at a low level. The effective application and quality of results are dependent on the availability of relevant input data obtained using a detailed inventory analysis, based on specific regional conditions. The evaluation of the real level of total quality of concrete structure should be based on a detailed ILCA analysis using regionally or locally relevant data sets.
Author :National Academies of Sciences, Engineering, and Medicine Publisher :National Academies Press ISBN 13 :0309451833 Total Pages :209 pages Book Rating :4.3/5 (94 download)
Book Synopsis Guidelines for Optimizing the Risk and Cost of Materials QA Programs by : National Academies of Sciences, Engineering, and Medicine
Download or read book Guidelines for Optimizing the Risk and Cost of Materials QA Programs written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-05-25 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB’s National Cooperative Highway Research Program (NCHRP) Research Report 838: Guidelines for Optimizing the Risk and Cost of Materials QA Programs proposes guidelines for optimizing the risk and cost of materials quality assurance (QA) programs. It develops a methodology for establishing a materials QA program that optimizes risk and cost by providing appropriate types, levels, and frequencies of agency testing and inspection for transportation projects across their full range of type, size, complexity, and project-delivery method.
Book Synopsis A Comprehensive Method for Concrete Mix Design by : Janamian, K.
Download or read book A Comprehensive Method for Concrete Mix Design written by Janamian, K. and published by Materials Research Forum LLC. This book was released on 2020-01-20 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel method of concrete mix design is presented. Tests with various constituent materials are reported in great detail. Both laboratory tests and applications in industry show the method to be very successful for all kinds of normal constituent materials, including silica fume, ground granulated blast furnace slag, fly ash, natural pozzolans, blended cement, fine and coarse aggregates, water, air entraining admixtures, plasticizers and super-plasticizers.
Book Synopsis Advances in Protective Structures Research by : Hong Hao
Download or read book Advances in Protective Structures Research written by Hong Hao and published by CRC Press. This book was released on 2012-08-17 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Association of Protective Structures (IAPS) was launched on 1 October 2010 in Manchester, UK during the first International Conference of Protective Structures. The primary purpose of IAPS is to bring researchers and engineers working in the area of protective structures together, and to promote research and development work for b
Book Synopsis Optimization Of Cementitious Material Content For Sustainable Concrete Mixtures Through Value Engineering Approach by : Adel Baghdady
Download or read book Optimization Of Cementitious Material Content For Sustainable Concrete Mixtures Through Value Engineering Approach written by Adel Baghdady and published by . This book was released on 2019 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper studies the effectiveness of applying value engineering to actual concrete mixtures. The study was conducted in the State of Qatar on a number of strategic construction projects with international engineering specifications for the 2022 World Cup projects. The study examined the concrete mixtures of Doha Metro project and the development of KAHRAMAA's (Qatar Electricity and Water Company) Abu Funtas Strategic Desalination Plant, in order to generally improve the quality and productivity of ready-mixed concrete used in construction and hydraulic projects. The application of value engineering to such concrete mixtures resulted in the following: • Improving the quality of concrete mixtures and increasing the durability of buildings in which they are used; • Reducing the waste of excess materials of concrete mixture, optimizing the use of resources, and enhancing sustainability; • Reducing the use of cement, thus reducing CO2 emissions which ensures the protection of environment and public health; • Reducing actual costs of concrete mixtures and, in turn, reducing the costs of construction projects; and • Increasing the market share and competitiveness of concrete producers. This research shows that applying the methodology of value engineering to ready-mixed concrete is an effective way to save around 5% of the total cost of concrete mixtures supplied to construction and hydraulic projects, improve the quality according to the technical requirements and as per the standards and specifications for ready-mixed concrete, improve the environmental impact, and promote sustainability.
Book Synopsis Proceedings of Eighth International Congress on Information and Communication Technology by : Xin-She Yang
Download or read book Proceedings of Eighth International Congress on Information and Communication Technology written by Xin-She Yang and published by Springer Nature. This book was released on 2023-07-29 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers selected high-quality research papers presented at the Eighth International Congress on Information and Communication Technology, held at Brunel University, London, on 20–23 February 2023. It discusses emerging topics pertaining to information and communication technology (ICT) for managerial applications, e-governance, e-agriculture, e-education and computing technologies, the Internet of Things (IoT) and e-mining. Written by respected experts and researchers working on ICT, the book offers a valuable asset for young researchers involved in advanced studies. The work is presented in four volumes.
Book Synopsis PRO 32: International Conference on Advances in Concrete and Structures - ICACS 2003 (Volume 2) by : Ying-shu Yuan
Download or read book PRO 32: International Conference on Advances in Concrete and Structures - ICACS 2003 (Volume 2) written by Ying-shu Yuan and published by RILEM Publications. This book was released on 2003 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :fib Fédération internationale du béton Publisher :fib Fédération internationale du béton ISBN 13 :2883940681 Total Pages :81 pages Book Rating :4.8/5 (839 download)
Book Synopsis Environmental Design by : fib Fédération internationale du béton
Download or read book Environmental Design written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2004-01-01 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: The construction industry, including the concrete industry, faces the transformation process from the traditional building process to the new approach, "sustainable construction". Environmental aspects represent a key role in this process. The principal importance of the environmental impact evaluation of concrete structures follows from the high amount of concrete structures built around the world every year. The specific amount of harmful impacts embodied in concrete unit is, in comparison with other building materials, relatively small. However, due to the high production of concrete, the final negative environmental impact of concrete structures is significant. Any improvement of concrete design principles, methodologies of assessment, construction and demolition technologies, and management of operation and use of concrete structures thus provides a very significant contribution to the general goal: the achievement of a development process in the sustainable way. The objective of this state-of-art report is provide the framework of so-called environmental design, to document "Best Available Technology" (BAT) for concrete structures from an environmental point of view and to summarize methodologies for environmental impact evaluation and optimization of concrete structures. Although the authors of the report were from Europe and Japan, it was attempted to collect information as widely as possible.
Book Synopsis Concrete Mixture Optimization Using Statistical Methods: Final Report by : M. J. Simon
Download or read book Concrete Mixture Optimization Using Statistical Methods: Final Report written by M. J. Simon and published by . This book was released on 2003 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
