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Proprietes Mecaniques Et Physico Chimiques Des Betons Autoplacants Exposes A Une Temperature Elevee
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Book Synopsis Propriétés mécaniques et physico-chimiques des bétons autoplaçants exposés à une température élevée by : Hanaa Fares
Download or read book Propriétés mécaniques et physico-chimiques des bétons autoplaçants exposés à une température élevée written by Hanaa Fares and published by . This book was released on 2009 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'utilisation des Bétons autoplaçants (BAP) s'est considérablement développée au cours des dernières années et une attention grandissante est portée à l'étude de leurs propriétés mécaniques à l'état durci. Les spécificités de formulation de ces bétons (volume de pâte important, dosage élevé en additions minérales, rapport G/S (Gravillons/Sable) proche de 1, . . .) liées à leurs exigences de mise en oeuvre pourraient modifier leur comportement mécanique à l'état durci, comparativement aux bétons traditionnels vibres. Le comportement des BAP à haute température doit en particulier être évalué. Les matériaux testés sont 3 bétons de résistance courante dont 2 BAP et un BV. La particularité des BAP est le volume de pâte important. Des essais mécaniques (résistance à la compression, à la traction par flexion 4 points et mesure du module d'élasticité) ont été réalisés. Parallèlement à cela, la détermination de la porosité à l'eau, de la densité apparente, de la perte de masse ainsi que de la perméabilité aux gaz ont été étudiées. De plus, des observations microscopiques couplées à des analyses d'image et des analyses thermiques aident à préciser les causes physico-chimiques des phénomènes macroscopiques observes. Les résultats expérimentaux montrent des comportements significatifs entre les BAP et BV. Les essais de résistance à la compression ont permis de distinguer un gain de résistance entre 150 et 300°C. Ce gain est expliqué par une réhydratation de la matrice cimentaire due à la migration de l'eau à travers les pores pour les BAP, mais aussi à de meilleures propriétés liantes des hydrates formés. La réhydratation concerne les éléments anhydres de la pâte de ciment. Parallèlement à cette étude, un travail en collaboration avec l'Université d'Alabama concernant le comportement à haute température des bétons autoplaçants de granulats légers a été réalisé. Cette étude a permis de caractériser les propriétés mécaniques et les propriétés physico-chimiques de BAP de granulats légers (fabriques a Université d'Alabama (USA). Pour cela, des éprouvettes prismatiques et cylindriques ont subi deux traitements thermiques différents : un chauffage de type incendie ISO-834 et un chauffage lent à 1°C/min. A travers cette étude, les BAP GN ont présenté une meilleure stabilité thermique a un incendie ISO-834. En ce qui concerne les propriétés physico-chimiques, nous avons constaté une similitude des comportements entre BAP GL et BAP GN du point de vue de la porosité, densité, analyses thermiques. Néanmoins, une diminution de la porosité est observe à 400°C. Elle peut être attribuée à un retrait des éprouvettes causant une diminution de volume. D'un point de vue mécanique, les BAP GL présentent une meilleure résistance résiduelle à la compression et à la flexion que le BAP GN. Donc, l'utilisation de GL améliore le comportement mécanique résiduel.
Book Synopsis Concrete Recycling by : Francois de Larrard
Download or read book Concrete Recycling written by Francois de Larrard and published by CRC Press. This book was released on 2019-03-04 with total page 859 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concrete industry consumes thirty billion tons of aggregate annually, almost all from non-renewable natural sources. Demolition produces a growing amount of materials which are legally usable and readily available. If not used locally they must be transported and landfilled. Also, demolition generally takes place close to new construction sites: recycling promotes shorter transportation distances, a must for improving the overall environmental footprint of the construction world. This book encompasses all aspects of this current trend: How recycled aggregates are obtained and their properties. Improving their quality through phase selection or separation. Incorporating concrete from demolition into the cement production process and the properties of the product obtained. What are the properties of concrete incorporating recycled concrete aggregates at various replacement levels, throughout the lifecycle of the material, from the fresh state to the long-term, including durability and fire. How recycled concrete can be optimised for various uses. How this new structural material can be managed in reinforced concrete construction. Solid experience from a series of experimental sites, and drawing on the Recybéton project, which lasted more than 5 years and gathered about 50 partners (from both academia and industry). Specific issues in recycled concrete quality control. National practices in the most advanced countries, and the main national and European standards. Achieving a sustainable process.
Book Synopsis Materials for Sustainable Infrastructure by : Leslie Struble
Download or read book Materials for Sustainable Infrastructure written by Leslie Struble and published by Springer. This book was released on 2017-07-11 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes a unique group of chapters focusing on new advances in materials for infrastructure sustainability. Chapters have been well-organized and handled by a group of international experts in order to discuss a timely topic with regards to the sustainable infrastructures. This volume is part of the proceedings of the 1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017.
Book Synopsis Eco-efficient Repair and Rehabilitation of Concrete Infrastructures by : Fernando Pacheco-Torgal
Download or read book Eco-efficient Repair and Rehabilitation of Concrete Infrastructures written by Fernando Pacheco-Torgal and published by Elsevier. This book was released on 2024-03-22 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eco-efficient Repair and Rehabilitation of Concrete Infrastructures, Second Edition provides an updated state-of-the-art review on the latest advances in this important research field. The first section is brought fully up-to-date and focuses on deterioration assessment methods. Section two contains brand new chapters on innovative concrete repair and rehabilitation materials including: fly ash-based alkali-activated repair materials for concrete exposed to aggressive environments; repairing concrete structures with alkali-activated metakaolin mortars; concrete with micro encapsulated self-healing materials; concrete repaired with bacteria; concrete structures repaired with engineered cementitious composites; concrete repaired by electrodeposition; the assessment of concrete after repair operations and durability of concrete repair. The final section has also been amended to include six new chapters on design, Life-cycle cost analysis and life-cycle assessment. These chapters include maintenance strategies for concrete structures; a comparison of different repair methods; life cycle assessment of the effects of climate change on bridge deterioration; life-cycle-cost benefits of cathodic protection of concrete structures; life-cycle cost analyses for concrete bridges exposed to chlorides and life-cycle analysis of repair of concrete pavements. The book will be an essential reference resource for materials scientists, civil and structural engineers, architects, structural designers and contractors working in the construction industry. Covers the latest research findings on eco-efficient repair and rehabilitation of concrete infrastructures Provides comprehensive coverage from damage detection and assessment, to repair strategies and structural health monitoring Presents a diverse author base that offers insights on construction practice and employed technologies worldwide Includes an entire section on NDT, innovative repair, and rehabilitation materials, as well as case studies on lifecycle cost analysis and lifecycle assessment
Book Synopsis First RILEM International Conference on Concrete and Digital Fabrication – Digital Concrete 2018 by : Timothy Wangler
Download or read book First RILEM International Conference on Concrete and Digital Fabrication – Digital Concrete 2018 written by Timothy Wangler and published by Springer. This book was released on 2018-08-29 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Digital fabrication has been termed the “third industrial revolution”, and is promising to revolutionize many disciplines, including most recently the construction sector. Both academia and industry see immense promise in cementitious materials, which lend themselves well to additive manufacturing techniques for digital fabrication in construction. With this recent trend and high interest in this new research field, the 1st RILEM International Conference on Concrete and Digital Fabrication (Digital Concrete 2018) was organized. Since 2014, ETH Zurich has been host for the Swiss National Centre for Competence in Research (NCCR) for Digital Fabrication in Architecture, which is highly interdisciplinary and unique worldwide. In 2018, this NCCR opened the “DFAB House”, which incorporates many digital fabrication principles for architecture. It is also responsible for the 600 m2 Robotic Fabrication Lab and the first robotically built roof in the world. Held in tandem with Rob|Arch 2018, the leading conference for robotics in architecture, RILEM deemed it the right time to combine forces at this new conference, which will be the first large conference to feature the work of the recently created RILEM Technical Committee on Digital Fabrication with Cement-based Materials, among other leaders in this new field worldwide. This conference proceedings brings together papers that take into account the findings in this new area. Papers reflect the varying themes of the conference, including Materials, Processing, Structure, and Applications.
Book Synopsis Robotic Fabrication in Architecture, Art and Design 2018 by : Jan Willmann
Download or read book Robotic Fabrication in Architecture, Art and Design 2018 written by Jan Willmann and published by Springer. This book was released on 2018-08-25 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents research from Rob|Arch 2018, the fourth international conference on robotic fabrication in architecture, art, and design. In capturing the myriad of scientific advances in robotics fabrication that are currently underway – such as collaborative design tools, computerised materials, adaptive sensing and actuation, advanced construction, on-site and cooperative robotics, machine-learning, human-machine interaction, large-scale fabrication and networked workflows, to name but a few – this compendium reveals how robotic fabrication is becoming a driver of scientific innovation, cross-disciplinary fertilization and creative capacity of an unprecedented kind.
Book Synopsis Clay-containing Polymeric Nanocomposites by : L. A. Utracki
Download or read book Clay-containing Polymeric Nanocomposites written by L. A. Utracki and published by iSmithers Rapra Publishing. This book was released on 2004 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is Part 1 of a two-part set. Part 2 ISBN is 1859574823
Book Synopsis Supplementary Cementing Materials by : Rafat Siddique
Download or read book Supplementary Cementing Materials written by Rafat Siddique and published by Springer Science & Business Media. This book was released on 2011-03-28 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an attempt to consolidate the published research related to the use of Supplementary Cementing Materials in cement and concrete. It comprises of five chapters. Each chapter is devoted to a particular supplementing cementing material. It is based on the literature/research findings published in journals/conference proceeding, etc. Topics covered in the book are; coal fly ash, silica fume (SF), granulated blast furnace slag (GGBS), metakaolin (MK), and rice husk ash (RHA). Each chapter contains introduction, properties of the waste material/by-product, its potential usage, and its effect on the properties of fresh and hardened concrete and other cement based materials.
Book Synopsis Alternative Fuels by : Michael F. Hordeski
Download or read book Alternative Fuels written by Michael F. Hordeski and published by The Fairmont Press, Inc.. This book was released on 2008 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Newly revised, the second edition of this pioneering work addresses emerging factors affecting energy production and use, including the availability and desirability of various fuels. The text provides extensive discussion on hydrogen sources, both solar and nuclear, and fuel cell technology, as well as other alternative fuels such as biomass, and wind power. It delves into cost analysis, regulatory issues, barriers to implementation, conversion and storage systems, thermodynamic efficiency, fuel chain efficiency, air emission issues, and safety. The book also covers natural gas hydrogen gas, methanol, ethanol, and steam reforming."--pub. desc.
Book Synopsis 3D Printing of Concrete by : Arnaud Perrot
Download or read book 3D Printing of Concrete written by Arnaud Perrot and published by John Wiley & Sons. This book was released on 2019-04-30 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction of digital manufacturing techniques, such as 3D printing applied to concrete material, opens up new perspectives on the way in which buildings are designed. Research on this theme is thriving and there is a high rate of innovation related to concrete. At the same time, the first life-size constructions made from printed concrete are emerging from the ground. This book presents state-of-the-art knowledge on the different printing processes as well as on the concrete material that must adapt to these new manufacturing techniques, such as new hardware and new printers for concrete. The possibilities in terms of architectural design are discussed as well as the pathways that remain to be uncovered. The book also explores the challenges that researchers and companies expect to overcome as they get closer to democratizing this potential revolution that is the digital manufacturing of concrete.
Book Synopsis Mechanical Behavior of Concrete by : Jean-Michel Torrenti
Download or read book Mechanical Behavior of Concrete written by Jean-Michel Torrenti and published by John Wiley & Sons. This book was released on 2013-03-01 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title provides a comprehensive overview of all aspects of the mechanical behavior of concrete, including such features as its elastoplasticity, its compressive and tensile strength, its behavior over time (including creep and shrinkage, cracking and fatigue) as well as modeling techniques and its response to various stimuli. As such, it will be required reading for anyone wishing to increase their knowledge in this area.
Book Synopsis Nanostructured Oxide Thin Films Synthesized by Spray Pyrolysis. by : Najoua Kamoun-Turki
Download or read book Nanostructured Oxide Thin Films Synthesized by Spray Pyrolysis. written by Najoua Kamoun-Turki and published by . This book was released on 2018-03 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the spray pyrolysis technique that is used to produce thin films of metallic oxides on glass substrates. Also discussed are the process variables of the spray pyrolysis process used to manufacture specific structures such as nanostructured thin films.
Book Synopsis Advanced Micro- & Mesoporous Materials by : K. Hadjiivanov
Download or read book Advanced Micro- & Mesoporous Materials written by K. Hadjiivanov and published by Heron Press. This book was released on 2008-10-31 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temperature Effects on Concrete by : Tarun R. Naik
Download or read book Temperature Effects on Concrete written by Tarun R. Naik and published by ASTM International. This book was released on 1985 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modelling and Simulation in Thermal and Chemical Engineering by : J. Thoma
Download or read book Modelling and Simulation in Thermal and Chemical Engineering written by J. Thoma and published by Springer Science & Business Media. This book was released on 2000 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main object of this book is modeling and simulation of energetic processes by bond graphs. But even without knowledge of this powerful method it can be used to a certain extent as an introduction to simulation in thermodynamics. The book addresses advanced students, lecturers and researchers in mechanical engineering and automation as well as experienced engineers in process industries.
Book Synopsis Dynamics and Control of Underactuated Multibody Spacecraft by : Sangbum Cho
Download or read book Dynamics and Control of Underactuated Multibody Spacecraft written by Sangbum Cho and published by . This book was released on 2002 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Filtering for Some Stochastic Processes with Discrete Observations by : Oleg V. Makhnin
Download or read book Filtering for Some Stochastic Processes with Discrete Observations written by Oleg V. Makhnin and published by . This book was released on 2002 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
