Estudo De Res Duos Da Constru O Civil Para Concreto Estrutural Aplicado Em Lajes Pr Moldadas
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Estudo De Res Duos Da Constru O Civil Para Concreto Estrutural Aplicado Em Lajes Pr Moldadas
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Author : Enildo Tales Ferreira
language : pt-BR
Publisher: Editora Appris
Release Date : 2022-07-25
Estudo De Res Duos Da Constru O Civil Para Concreto Estrutural Aplicado Em Lajes Pr Moldadas written by Enildo Tales Ferreira and has been published by Editora Appris this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-07-25 with Computers categories.
Diversas cidades brasileiras enfrentam dificuldades para a destinação final dos resíduos da construção civil (RCC). Considerando essa realidade, o autor deste livro apresenta um estudo que aborda a destinação desse resíduo no próprio setor, com base numa análise do potencial de uso de agregados de RCC em concretos estruturais (fck = 25 MPa), aplicados em lajes pré-moldadas. Sugere, ainda, uma alternativa para enfrentar o problema do baixo consumo de agregados reciclados de RCC no mercado local (João Pessoa, PB): a possibilida-de da ampliação do seu uso também em concretos estruturais. O estudo considera a compo-sição das amostras de RCC coletadas aleatoriamente em três momentos diferentes na usina de reciclagem (Usiben), existente na mesma cidade, que é o destino de parte dos RCC gerados nas construções locais. O estudo de dosagem desenvolvido busca qualificar as propriedades dos agregados reciclados utilizados, visando a obter o melhor cenário com maior teor de agregados graúdos de RCC, substituindo os naturais, e o atendimento ao requisito principal (fck = 25 MPa) para o concreto estrutural, avaliado nas lajes pré-molda-das. Os protótipos dessas lajes, executados com concreto contendo 75% de agregados graúdos de RCC, submetidos ao ensaio de resistência à flexão, permitem afirmar que o desempenho atende às expectativas tanto na resistência quanto na deformação para esse elemento pré-moldado. Com base nessa principal conclusão, confirma-se a possibilidade de uso desse concreto reciclado nas lajes pré-moldadas, que são usuais justamente nas pequenas edificações/reformas que, em média, na soma global, contribuem com maiores percentuais no total de RCC gerados nas cidades. Embora seja um estudo com resultados promissores, alicerçados no rigor científico e no adequado controle das variáveis, as características dos equipamentos utilizados no beneficiamento do RCC para gerar os agregados reciclados, assim como a tecnologia construtiva utilizada nas edificações, no contexto geográfico e temporal, são dados considerados como influentes nos resultados alcançados nesse estudo, sendo importante a cautela nas generalizações dos achados. Por fim, ressalta-se a importância de estudos dessa natureza, que contribuem para a melhoria da qualidade do meio ambiente, fornecendo elementos científicos para a redução do consumo de agregados naturais e possivelmente das deposições clandestinas de RCC.
Fire Design Of Concrete Structures Materials Structures And Modelling
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Author : fib Fédération internationale du béton
language : en
Publisher: fib Fédération internationale du béton
Release Date : 2007-01-01
Fire Design Of Concrete Structures Materials Structures And Modelling written by fib Fédération internationale du béton and has been published by fib Fédération internationale du béton this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-01-01 with Technology & Engineering categories.
Fire design of concrete structures has emerged in recent years as a high profile subject of great interest to both experts and the public. This has been largely prompted by severe damage to concrete in a number of recent tunnel fires, as well as a considerable amount of research and development that has taken place world-wide. fib Task Group 4.3, "Fire Design of Concrete Structures", therefore took the initiative to develop this bulletin in order to present the results of this international research to a wider group of concrete professionals. The report presents a general brief outline of the effect of fire on both concrete material and concrete structures, with emphasis placed on the important developments of the past few years, namely: (a) the increasing use of high strength concrete (HSC) in buildings, tunnels and bridges; (b) the growing acceptance of the use of performance based fire engineering calculations for the structural analysis and design against fire; (c) the problem of, and solutions to, explosive spalling; and (d) fires in tunnels. This report is not intended to be an exhaustive review of the effect of fire on concrete and concrete structures, nor to present a database of properties at high temperature. Instead, the main aims of this document are to present recent trends and developments, highlight key influencing factors, bring together the disparate but related issues in one short document, highlight the deficiencies in current practice and point to the future. The basic principles of performance based codes and fire engineering are also presented on the assumption that the reader is not a specialist in this field.
Introduction To Architecture
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Author : Francis D. K. Ching
language : en
Publisher: John Wiley & Sons
Release Date : 2012-10-23
Introduction To Architecture written by Francis D. K. Ching and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-23 with Architecture categories.
A survey of the built environment distills the work of legendary author and illustrator Francis D. K. Ching into a single volume Introduction to Architecture presents the essential texts and drawings of Francis D. K. Ching for those new to architecture and design. With his typical highly graphic approach, this is the first introductory text from Ching that surveys the design of spaces, buildings, and cities. In an easy to understand format, readers will explore the histories and theories of architecture, design elements and process, and the technical aspects of the contemporary profession of architecture. The book explains the experience and practice of architecture and allied disciplines for future professionals, while those who love the beauty of architecture drawing will delight in the gorgeous illustrations included. Overview of the issues and practices of architecture in an all-in-one introductory text Includes new chapters and introductory essays by James Eckler, and features more than 1,000 drawings throughout Professor Ching is the bestselling author of numerous books on architecture and design, all published by Wiley; his works have been translated into 16 languages and are regarded as classics for their renowned graphical presentation For those pursuing a career in architecture or anyone who loves architectural design and drawing, Introduction to Architecture presents a beautifully illustrated and comprehensive guide to the subject.
Multi Storey Precast Concrete Framed Structures
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Author : Kim S. Elliott
language : en
Publisher: John Wiley & Sons
Release Date : 2013-10-07
Multi Storey Precast Concrete Framed Structures written by Kim S. Elliott and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-07 with Technology & Engineering categories.
Precast reinforced and prestressed concrete frames provide a high strength, stable, durable and robust solution for any multi-storey structure, and are widely regarded as a high quality, economic and architecturally versatile technology for the construction of multi-storey buildings. The resulting buildings satisfy a wide range of commercial and industrial needs. Precast concrete buildings behave in a different way to those where the concrete is cast in-situ, with the components subject to different forces and movements. These factors are explored in detail in the second edition of Multi-Storey Precast Concrete Framed Structures, providing a detailed understanding of the procedures involved in precast structural design. This new edition has been fully updated to reflect recent developments, and includes many structural calculations based on EUROCODE standards. These are shown in parallel with similar calculations based on British Standards to ensure the designer is fully aware of the differences required in designing to EUROCODE standards. Civil and structural engineers as well as final year undergraduate and postgraduate students of civil and structural engineering will all find this book to be thorough overview of this important construction technology.
Steel Corrosion In Concrete
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Author : Arnon Bentur
language : en
Publisher: CRC Press
Release Date : 1997-10-09
Steel Corrosion In Concrete written by Arnon Bentur and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-10-09 with Technology & Engineering categories.
Poor durability of concrete is a major cause of problems in modern building and civil engineering structures in all countries: the annual cost of investigating and repairing deteriorating reinforced concrete structures runs into many millions of pounds. This book explains the fundamentals of the corrosion of steel in concrete. It is comprehensive and provides a basis for the practising engineer to design concrete structures which avoid the problem using modern concepts and specifications. A limited discussion of corrosion measurement and repairs is also provided.
Handbook On Nondestructive Testing Of Concrete
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Author : V. M. Malhotra
language : en
Publisher: CRC Press
Release Date : 2004
Handbook On Nondestructive Testing Of Concrete written by V. M. Malhotra and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Technology & Engineering categories.
Civil engineers will value this resource that examines the tools and techniques used to estimate the in-place strength on concrete, permeation properties that relate to potential durability, and the methods used to assess the internal condition of concrete and the corrosion activity of steel reinforcement.
Frp Reinforcement In Rc Structures
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Author : fib Fédération internationale du béton
language : en
Publisher: fib Fédération internationale du béton
Release Date : 2007-01-01
Frp Reinforcement In Rc Structures written by fib Fédération internationale du béton and has been published by fib Fédération internationale du béton this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-01-01 with Technology & Engineering categories.
fib Bulletin 40 deals mainly with the use of FRP bars as internal reinforcement for concrete structures. The background of the main physical and mechanical properties of FRP reinforcing bars is presented, with special emphasis on durability aspects. For each of the typical ultimate and serviceability limit states, the basic mechanical model is given, followed by different design models according to existing codes or design guidelines. Composite FRP materials are still relatively new in construction and most engineers are unfamiliar with their properties and characteristics. The second chapter of this bulletin therefore aims to provide practising engineers with the necessary background knowledge in this field, and also presents typical products currently available in the international market. The third chapter deals with the issue of durability and identifies the parameters that can lead to deterioration, which is necessary information when addressing design issues. A series of parameters is used to identify the allowable stress in the FRP after exposure for a specified period of time in a specific environment. The bulletin covers the issues of Ultimate Limit States (primarily dealing with flexural design), Serviceability Limit States (dealing with deflections and cracking), Shear and Punching Shear and Bond and Tension Stiffening. It provides not only the state-of-the-art but also in many cases ideas for the next generation of design guidelines. The final chapter deals with the fundamental issue of design philosophy. The use of these new materials as concrete reinforcement has forced researchers to re-think many of the fundamental principles used until now in RC design. The bulletin ends with a discussion of a possible new framework for developing partial safety factors to ensure specific safety levels that will be flexible enough to cope with new materials.
The Structural Engineer
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Author :
language : en
Publisher:
Release Date : 1944
The Structural Engineer written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1944 with Building categories.
Ceb Fip Model Code 1990
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Author : FIB – International Federation for Structural Concrete
language : en
Publisher: fib Fédération internationale du béton
Release Date : 1993-01-01
Ceb Fip Model Code 1990 written by FIB – International Federation for Structural Concrete and has been published by fib Fédération internationale du béton this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-01-01 with Technology & Engineering categories.
This design code for concrete structures is the result of a complete revision to the former Model Code 1978, which was produced jointly by CEB and FIP. The 1978 Model Code has had a considerable impact on the national design codes in many countries. In particular, it has been used extensively for the harmonisation of national design codes and as basic reference for Eurocode 2. The 1990 Model Code provides comprehensive guidance to the scientific and technical developments that have occurred over the past decade in the safety, analysis and design of concrete structures. It has already influenced the codification work that is being carried out both nationally and internationally and will continue so to do.
Binders For Durable And Sustainable Concrete
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Author : Pierre-Claude Aïtcin
language : en
Publisher: CRC Press
Release Date : 2007-08-07
Binders For Durable And Sustainable Concrete written by Pierre-Claude Aïtcin and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-07 with Technology & Engineering categories.
Linking theory to practice, this book provides a better fundamental understanding of Portland cement and hydraulic binders which is necessary to make better concrete. It has been clearly demonstrated that concrete durability is closely linked to its water/binder ratio and proper curing during the first week after casting. In this rigorously presented work, Pierre-Claude Aïtcin explains the complexity of the hydration reaction and how to make, use and cure durable and sustainable concrete. This book also details the problems with Portland cement composition at present and outlines the concept of an ideal hydraulic binder which is technically and ecologically efficient, as well as being long-lasting and robust. Binders for Durable and Sustainable Concrete is a practical and innovative reference text which will be particularly relevant to engineers and chemists working in the Portland cement, concrete and admixture industries. This book will also be of interest to academics and graduate-level students in Civil Engineering departments who specialize in Portland cement and concrete technology.