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Changement Du Volume Des Betons Aux Ajouts Cimentaires
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Book Synopsis Changement Du Volume Des Bétons Aux Ajouts Cimentaires by : Moahmmed Seddik Meddah
Download or read book Changement Du Volume Des Bétons Aux Ajouts Cimentaires written by Moahmmed Seddik Meddah and published by Omniscriptum. This book was released on 2012 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: À l'heure actuelle, l'emploi des bétons à hautes performances (BHP) contenant des ajouts cimentaires dans des éléments structuraux en béton armé est devenu de plus en plus une pratique courante. Quoique ces bétons démontrent d'excellentes durabilité et performances mécaniques, ils présentent toutefois un risque important de fissuration à jeune âge, souvent associé au développement du retrait d'autodessiccation. Cette étude s'intéresse à deux aspects fondamentaux résultant de l'addition d'ajouts minéraux au BHP: le système poreux et le retrait. Ainsi, dans le cadre de ce travail, nous proposons une nouvelle approche permettant, d'une part, une estimation judicieuse de l'amplitude ultime du retrait, et d'autre part, de distinguer les déformations effectives susceptibles d'engendrer des contraintes internes. L'approche est basée sur la vitesse de progression des déformations au cours du temps. Il a été aussi conclut que le développement du retrait d'autodessiccation est étroitement lié à l'évolution du diamètre seuil des pores. Il convient de signaler que le réseau de pores développé par les mélanges testés renferme des populations de pores dont le diamètre est inférieur à 60 nm.
Book Synopsis Évaluation du comportement en durabilité de nouvelles matrices cimentaires pour l'obtention de bétons respectueux de l'environnement by : Charles Lafrenière
Download or read book Évaluation du comportement en durabilité de nouvelles matrices cimentaires pour l'obtention de bétons respectueux de l'environnement written by Charles Lafrenière and published by . This book was released on 2017 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le béton figure parmi les matériaux de construction les plus polluants compte tenu du grand volume utilisé chaque année. La production du ciment portland, l'ingrédient clé du béton, est très énergivore et le procédé de décarbonatation génère de grandes quantités de CO2. L'industrie du ciment est responsable d'environ 5 à 7% des émissions mondiales de gaz à effet de serre. Dans ce contexte, la recherche de nouveaux liants pour la fabrication de bétons verts et durables est un domaine en constante expansion. L'objectif est de développer et proposer des alternatives à l'industrie. Les ciments composés (ciment + ajouts cimentaires alternatifs) et les liants de nouvelle génération appelés "géopolymères" représentent deux alternatives intéressantes. Toutefois, il est important d'évaluer leur comportement en durabilité pour que ces matériaux soient acceptés. Ce projet de recherche s'intéresse donc à l'évaluation du comportement en durabilité de ces deux alternatives. La performance en durabilité de la poudre de verre mixte (PV) et d'une cendre volante de biomasse (CVK) contre l'alcali-réaction (RAG) a ainsi été évaluée par l'entremise d'essais d'expansion sur mortier (CSA A23.2-25A) et sur béton (CSA A23.2-14A) pour des niveaux de remplacement du ciment portland de 20% et 30%. Les résultats obtenus à ce jour montrent qu'à 20% et 30% de remplacement du ciment, ces deux ajouts cimentaires alternatifs ne rencontrent pas les exigences normatives à ce qui a trait à leur utilisation comme mesure préventive appropriée contre la RAG. La performance des géopolymères a également été évaluée dans le but de se familiariser avec les différents paramètres de synthèse, mais aussi afin de déterminer la viabilité de ces systèmes en durabilité, plus précisément contre la RAG. Les résultats sur mortier et sur béton démontrent que la nature du matériau "source", la température et la durée de cure, le temps de malaxage, la nature et la concentration de la solution d'activation, ainsi que la présence d'humidité sont les paramètres qui ont le plus d'influence sur le développement des résistances mécaniques des géopolymères. Les résultats d'essai d'expansion face à l'alcali-réaction sont très variables et aucune tendance n'a été observée sur mortier, tandis que les résultats sur béton montrent une expansion excessive à long terme.
Book Synopsis Ecostructures en béton by : Pierre-Claude Aïtcin
Download or read book Ecostructures en béton written by Pierre-Claude Aïtcin and published by Editions Eyrolles. This book was released on 2013 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quand on sait que - du fait notamment de la transformation du calcaire en chaux - la production de ciment Portland est responsable de 7% des émissions de gaz à effet de serre, on comprend pourquoi il importe désormais de trouver comment minimiser l'empreinte carbone des constructions en béton.On verra comment on peut aujourd'hui réduire de manière significative l'impact environnemental de ces édifices et respecter les impératifs du développement durable sans pour autant - et bien au contraire - mettre en péril l'économie du projet de construction.Il s'agit d'une mutation qui passera toutefois par un changement d'attitude des partenaires: le ciment Portland sera de plus en plus souvent remplacé par des liants binaires, ternaires ou même quaternaires contenant d'autres matériaux cimentaires; un rapport eau/liant plus faible améliorera la résistance mécanique des bétons en même temps qu'il augmentera leur durée de vie et diminuera leur empreinte carbone. Enfin, l'usage renforcé du mûrissement interne (cure) favorisera l'hydratation des matériaux cimentaires, en particulier dans les bétons à haute performance.On trouvera également dans ce livre une présentation des dernières avancées de la science du béton: comment sait-on maintenant améliorer et la rentabilité et la durée de vie de ce matériau en même temps qu'on réduit son impact environnemental.Fruit d'une technologie simple mais aussi d'une science complexe, le béton entre ainsi dans une ère nouvelle.
Book Synopsis Changement de volume et fluage du béton by : Rolf F. Feldman
Download or read book Changement de volume et fluage du béton written by Rolf F. Feldman and published by . This book was released on 1974 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compressive Strength of Concrete by : Pavel Krivenko
Download or read book Compressive Strength of Concrete written by Pavel Krivenko and published by BoD – Books on Demand. This book was released on 2020-03-11 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete made using mineral cements, the raw materials which on earth are practically endless, is known as one of the oldest building materials and during the last decades of the twentieth century has become a dominant building material for general use. At the same time, the requirements of the quality of concrete and its performance properties, in particular compressive strength, durability, economical efficiency, and low negative impact of its manufacture on the environment have not yet been completely met. Bearing these requirements in mind, researchers and engineers worldwide are working on how to satisfy these requirements. This book has been written by researchers and experts in the field and provides the state of the art on recent progress achieved on the properties of concrete, including concrete in which industrial by-products are utilized. The book is dedicated to graduate students, researchers, and practicing engineers in related fields.
Book Synopsis Cement-Based Composites by : Andrzej M. Brandt
Download or read book Cement-Based Composites written by Andrzej M. Brandt and published by CRC Press. This book was released on 2009-01-29 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cement-Based Composites takes a different approach from most other books in the field by viewing concrete as an advanced composite material, and by considering the properties and behaviour of cement-based materials from this stance. It deals particularly, but not exclusively, with newer forms of cement-based materials. This new edition takes a critical approach to the subject as well as presenting up-to-date knowledge. Emphasis is given to non-conventional reinforcement and design methods, problems at the materials' interfaces and to the durability of structures. High strength composites and novel forms of cement-based composites are described in detail. After a basic introduction the book explores the various components of these materials and their properties. It then deals with mechanical properties and considers characteristics under various loading and environmental conditions, and concludes by examining design, optimization and economics with particular emphasis on high-performance concretes. Researchers, graduate students and practising engineers will find this book valuable.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 906 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Recycled Concrete and Demolition Waste by : F. Pacheco-Torgal
Download or read book Handbook of Recycled Concrete and Demolition Waste written by F. Pacheco-Torgal and published by Elsevier. This book was released on 2013-09-30 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: The civil engineering sector accounts for a significant percentage of global material and energy consumption and is a major contributor of waste material. The ability to recycle and reuse concrete and demolition waste is critical to reducing environmental impacts in meeting national, regional and global environmental targets. Handbook of recycled concrete and demolition waste summarises key recent research in achieving these goals. Part one considers techniques for managing construction and demolition waste, including waste management plans, ways of estimating levels of waste, the types and optimal location of waste recycling plants and the economics of managing construction and demolition waste. Part two reviews key steps in handling construction and demolition waste. It begins with a comparison between conventional demolition and construction techniques before going on to discuss the preparation, refinement and quality control of concrete aggregates produced from waste. It concludes by assessing the mechanical properties, strength and durability of concrete made using recycled aggregates. Part three includes examples of the use of recycled aggregates in applications such as roads, pavements, high-performance concrete and alkali-activated or geopolymer cements. Finally, the book discusses environmental and safety issues such as the removal of gypsum, asbestos and alkali-silica reaction (ASR) concrete, as well as life-cycle analysis of concrete with recycled aggregates. Handbook of recycled concrete and demolition waste is a standard reference for all those involved in the civil engineering sector, as well as academic researchers in the field. Summarises key recent research in recycling and reusing concrete and demolition waste to reduce environmental impacts and meet national, regional and global environmental targets Considers techniques for managing construction and demolition waste, including waste management plans, ways of estimating levels of waste, the types and optimal location of waste recycling plants Reviews key steps in handling construction and demolition waste
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 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 Self-Compacting Concrete: Materials, Properties and Applications by : Rafat Siddique
Download or read book Self-Compacting Concrete: Materials, Properties and Applications written by Rafat Siddique and published by Woodhead Publishing. This book was released on 2019-11-19 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-Compacting Concrete: Materials, Properties and Applications presents the latest research on various aspects of self-compacting concrete, including test methods, rheology, strength and durability properties, SCC properties at elevated temperature, SC manufacturing with the use of SCMs, recycled aggregates and industrial by-products. Written by an international group of contributors who are closely associated with the development of self-compacting concrete, the book explores the main differences between SCC and normal concrete in terms of raw materials, fresh properties and hardened properties. Other topics discussed include the structure and practical applications of fiber reinforced SCC. Researchers and experienced engineers will find this reference to be a systematic source to SCC with its accounting of the latest breakthroughs in the field and discussions of SCC constructability, structural integrity, improved flows into complex forms, and superior strength and durability. Offers a systematic and comprehensive source of information on the latest developments in SCC technology Includes mix design procedures, tests standards, rheology, strength and durability properties Explores the properties and practical applications of SCC
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.
Author :Vangipuram Seshachar Ramachandran Publisher :Natural Resources Canada, Canada Centre for Mineral and Energy Technology ISBN 13 : Total Pages :436 pages Book Rating :4.:/5 (31 download)
Book Synopsis Superplasticizers by : Vangipuram Seshachar Ramachandran
Download or read book Superplasticizers written by Vangipuram Seshachar Ramachandran and published by Natural Resources Canada, Canada Centre for Mineral and Energy Technology. This book was released on 1997 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been prepared with the aim of integrating information about the chemistry and application of concrete superplasticizers in a manner relevant to concrete engineers and technologists. The opening chapter introduces basic aspects of concrete science as background for what follows. Chapters 2-4 discuss the chemical synthesis of superplasticizers, methods used to characterize those chemicals, and techniques for evaluation of their effect in cementitious systems. Subsequent chapters cover: the influence of superplasticizers on hydration of cement materials; rheology of cementitious systems; issues related to the mode of action and compatibility of superplasticizers; the effect of superplasticizers on fresh concrete; mechanical properties and durability of concrete; innovative applications of superplasticizers in concrete; superplasticizer dispensing, specifications, and standards; patents related to superplasticizers; and current and future trends in the use of superplasticizers in concrete.
Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
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 Canadian Journal of Civil Engineering by :
Download or read book Canadian Journal of Civil Engineering written by and published by . This book was released on 1996 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultra High Performance Concrete by : Ekkehard Fehling
Download or read book Ultra High Performance Concrete written by Ekkehard Fehling and published by kassel university press GmbH. This book was released on 2008-01-01 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
