Durability Of Concrete Repairs
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Durability Of Concrete Repairs
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Author : P. R. Vassie
language : en
Publisher:
Release Date : 1987
Durability Of Concrete Repairs written by P. R. Vassie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Bridges, Concrete categories.
This report describes methods of removing localised and general corrosion deposits from reinforcing bars and the subsequent behaviour of the steel in concrete following repair.
Durability Of Concrete Structures
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Author : G.C. Mays
language : en
Publisher: CRC Press
Release Date : 1991-11-14
Durability Of Concrete Structures written by G.C. Mays and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-11-14 with Architecture categories.
This book is concerned with the long term durability of concrete as a structural material as used in the construction of buildings, bridges, roads, marine and civil engineering structures. It discusses the fundamental reasons for the deterioration of concrete over time and available techniques for detecting, remedying and preventing the deteriorati
Failure Distress And Repair Of Concrete Structures
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Author : Norb Delatte
language : en
Publisher: Elsevier
Release Date : 2009-10-26
Failure Distress And Repair Of Concrete Structures written by Norb Delatte and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-10-26 with Technology & Engineering categories.
Understanding and recognising failure mechanisms in concrete is a fundamental pre-requisite to determining the type of repair, or whether a repair is feasible. This title provides a review of concrete deterioration and damage, as well as looking at the problem of defects in concrete. It also discusses condition assessment and repair techniques. Part one discusses failure mechanisms in concrete and covers topics such as causes and mechanisms of deterioration in reinforced concrete, types of damage in concrete structures, types and causes of cracking and condition assessment of concrete structures. Part two reviews the repair of concrete structures with coverage of themes such as standards and guidelines for repairing concrete structures, methods of crack repair, repair materials, bonded concrete overlays, repairing and retrofitting concrete structures with fiber-reinforced polymers, patching deteriorated concrete structures and durability of repaired concrete. With its distinguished editor and international team of contributors, Failure and repair of concrete structures is a standard reference for civil engineers, architects and anyone working in the construction sector, as well as those concerned with ensuring the safety of concrete structures. Provides a review of concrete deterioration and damage Discusses condition assessment and repair techniques, standards and guidelines
Durability Evaluation Of Cement Based Repair Materials Used For Corrosion Damaged Steel Reinforced Concrete Structures
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Author : Boyu Wang
language : en
Publisher:
Release Date : 2018
Durability Evaluation Of Cement Based Repair Materials Used For Corrosion Damaged Steel Reinforced Concrete Structures written by Boyu Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Concrete repair materials are being widely used to restore and extend the service life of structures. While most cement-based repair materials are compatible with concrete structures, their durability properties do not attract much attention which it deserves from researchers. Since repair materials can deteriorate like conventional concrete, the search for reliable, long-lasting concrete repair materials is becoming more intensive. Amongst other factors, concrete permeability and chloride diffusivity within concrete are believed to play a major role in determining the durability and success of the repair. These two parameters determine the penetration rate of aggressive substances into concrete and how fast degradation could take place. A number of test methods have been proposed to study these two factors, and the commonly used test methods are water penetration, surface/bulk electrical resistivity, rapid chloride permeability (RCP), and half-cell potential. However, the relationship between each durability test method and their correlation with compressive strength measurement have not been fully understood. So, in this study, we aim for using multiple testing techniques, destructive and non-destructive, to evaluate the durability of concrete repair materials as well as correlating different test methods. Three types of commercially available cement-based materials are tested and evaluated, and results have indicated that cementitious concrete mortar (termed as Mix M) amongst others has the best durability performance which means low water permeability, high resistivity, and compressive strength. Whereas, the flexural performance of Mix M still needs some improvement in terms of flexural strength and flexural toughness. For various durability testing methods, surface resistivity is found to have a strong linear relation and a polynomial relation to bulk resistivity and water permeability respectively. No relationship is established between concrete resistivity and compressive strength, though high-strength concrete tends to have a high resistivity in our study. RCP test results do not correlate well with resistivity measurements, which requires further study to overcome its heating and binding effect when measurements are being taken. Half-cell potential method is used for validating test results but it reveals no difference for materials with different permeability and resistivity. A model is proposed to counteract temperature's effect while calculating the coefficient of diffusion, which indicates the concrete to resist chloride diffusion. It is found that this model can shift the RCP measurement slightly closer to its theoretical prediction but the difference between them is still large. Therefore, further research is required for acquiring more raw data from RCP measurements as the regression analysis input. In addition, a more comprehensive model that involves more correction factors for binding effects, etc., is also needed.
Concrete Durability And Repair Technology
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Author : Ravindra K. Dhir
language : en
Publisher: Thomas Telford
Release Date : 1999
Concrete Durability And Repair Technology written by Ravindra K. Dhir and has been published by Thomas Telford this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Technology & Engineering categories.
Concrete will be the key material for Mankind to create the built environment of the next millennium. The requirements of this infrastructure will be both demanding, in terms of technical performance and economy, and yet be greatly varied, from architectural masterpieces to the simplest of utilities.Concrete durability and repair technology forms the Proceedings of the three day International Conference held during the Congress, Creating with Concrete, 6-10 September 1999, organised by the Concrete technology Unit, University of Dundee.
Concrete Repair Rehabilitation And Retrofitting Iv
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Author : Frank Dehn
language : en
Publisher: CRC Press
Release Date : 2015-09-18
Concrete Repair Rehabilitation And Retrofitting Iv written by Frank Dehn and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-18 with Technology & Engineering categories.
The Fourth International Conference on Concrete Repair, Rehabilitation and Retrofitting (ICCRRR 2015) was held 5-7 October 2015 in Leipzig, Germany. This conference is a collaborative venture by researchers from the South African Research Programme in Concrete Materials (based at the Universities of Cape Town and The Witwatersrand) and the Material Science Group at Leipzig University and The Leipzig Institute for Materials Research and Testing (MFPA) in Germany. ICCRRR 2015 continues to seek and to extend a sound base of theory and practice in repair and rehabilitation, through both theoretical andexperimental studies, and through good case study literature. Two key aspects need to be addressed: that of developing sound and easily applied standard practices for repair, possibly codified, and the need to study seriously the service performance of repaired structures and repair systems. In fact, without making substantial efforts to implement the latter goal, much of the effort in repair and rehabilitation may prove to be less than economical or satisfactory. The conference proceedings contain papers presented at the conference which can be grouped under the six main themes of (i) Concrete durability aspects, (ii) Condition assessment of concrete structures, (iii) Modern materials technology, (iv) Concrete repair, rehabilitation and retrofitting, (v) Performance and health monitoring and (vi) Education, research and specifications. The large number of high quality papers presented and the wide range of relevant topics covered confirm that these proceedings will be a valued reference for many working in this important field and that they will form a suitable base for discussion and provide suggestions for future development and research. Set of book of abstracts (244 pp) and a searchable full paper CD-ROM (1054 pp).
Repair And Rehabilitation Of Concrete Structures
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Author : MODI, POONAM I.
language : en
Publisher: PHI Learning Pvt. Ltd.
Release Date : 2015-12-01
Repair And Rehabilitation Of Concrete Structures written by MODI, POONAM I. and has been published by PHI Learning Pvt. Ltd. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-01 with Technology & Engineering categories.
The field of Concrete Repair and Rehabilitation is gaining importance in view of its positive impacts in terms of socio-economic benefits and environmental sustainability. Due to growing importance of this field, many engineering colleges have included the subject of concrete repair and rehabilitation in the senior undergraduate and postgraduate course curriculums of civil engineering. This book is an earnest attempt to help students of civil engineering in enhancing their understanding and awareness about critical elements of repair and rehabilitation of concrete structure. The content is organised in such a way that it fulfils the academic needs of the students. This text attempts to dovetail all important aspects such as causes of distress, assessment and evaluation of deterioration, techniques for repair and rehabilitation along with selection of repair and rehabilitation materials and other important aspects related to preventive maintenance and rehabilitation/structural safety measures. The primary objective of this textbook is to guide students to: • Understand the underlying causes and types of deterioration in concrete structure • Learn about the field and laboratory testing methods available to evaluate the level of deterioration. • Get well acquainted with options of repair materials and techniques available to address different types of distress in concrete structure. • Grasp the knowledge of available techniques and their application for strengthening existing structural systems.
Durability Of Engineering Structures
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Author : J Bijen
language : en
Publisher: Elsevier
Release Date : 2003-08-31
Durability Of Engineering Structures written by J Bijen and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-08-31 with Technology & Engineering categories.
Civil engineering failures currently amount to 5 to 10 % of the total investment in new buildings and structures. These failures not only represent important cost considerations, they also have an environmental burden associated with them. Structures often deteriorate because not enough attention is given during the design stage and most standards for structural design do not cover design for service life. Designing for durability is often left to the structural designer or architect who may not have the necessary skills, and the result is all too often failure, incurring high maintenance and repair costs. Knowledge of the long-term behaviour of materials, building components and structures is the basis for avoiding these failures. Durability of engineering structures uses on the design of buildings for service life, effective maintenance and repair techniques in order to reduce the likelihood of failure. It describes the in situ performance of all the major man-made materials used in civil engineering construction - metals (steel and aluminium), concrete and wood. In addition some relatively new high-performance materials are discussed - high-performance concrete, high-performance steel and fibre-reinforced polymers (FRP). Deterioration mechanisms and the measures to counteract these, as well as subsequent maintenance and repair techniques are also considered and the latest standards on durability and repair are explained. Strategies for durability, maintenance and repair, including life cycle costing and environmental life cycle assessment methods are discussed. Finally practical case studies show how repairs can be made and the best ways of ensuring long term durability. This book is aimed at students in civil engineering, engineers, architects, contractors, plant managers, maintenance managers and inspection engineers. Explains the reasons why structures often deteriorate before they should because of poor design Shows how to design structures effectively for service life Considers durability characteristics of standard and high performance construction materials
Principles Of Chemical Engineering Processes
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Author : Nayef Ghasem
language : en
Publisher: CRC Press
Release Date : 2008-09-19
Principles Of Chemical Engineering Processes written by Nayef Ghasem and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-09-19 with Science categories.
Written in a clear, concise style, Principles of Chemical Engineering Processes provides an introduction to the basic principles and calculation techniques that are fundamental to the field. The text focuses on problems in material and energy balances in relation to chemical reactors and introduces software that employs numerical methods to solve these problems. Upon mastery of this material, readers will be able to: Understand basic processing terminology (batch, semibatch, continuous, purge, and recycle) and standard operations (reaction, distillation, absorption, extraction, and filtration) Draw and fully label a flowchart for a given process description Choose a convenient basis for calculation for both single- and multiple-unit processes Identify possible subsystems for which material and energy balances might be written Perform a degree of freedom analysis for the overall system and each possible subsystem, formulating the appropriate material and energy balance equations Apply the first law of thermodynamics, calculate energy and enthalpy changes, and construct energy balances on closed and open systems Written as a text to fully meet the needs of advanced undergraduate students, it is also suitable as a reference for chemical engineers with its wide coverage across the biochemical and electromechanical fields. Each chapter of the text provides examples, case studies, and end-of-chapter problems, and the accompanying CD-ROM contains software designed for solving problems in chemical engineering.
Repair Of Concrete Bridges
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Author : G. P. Mallett
language : en
Publisher: Thomas Telford
Release Date : 1994
Repair Of Concrete Bridges written by G. P. Mallett and has been published by Thomas Telford this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Technology & Engineering categories.
Provides a review of the repair, maintenance and protection of concrete bridges. This book summarizes information from conference papers, research and technical reports, and others. It aims to increase the expertise of structural engineers and safeguard the investment. It presents solutions to the problems and pitfalls that engineers encounter.