June 19, 2021

Download Ebook Free Eco-efficient Repair And Rehabilitation Of Concrete Infrastructures

Eco-efficient Repair and Rehabilitation of Concrete Infrastructures

Eco-efficient Repair and Rehabilitation of Concrete Infrastructures
Author : Fernando Pacheco-Torgal,Robert Melchers,Nele de Belie,Xianming Shi,Kim Van Tittelboom,Andres Saez Perez
Publisher : Woodhead Publishing
Release Date : 2017-11-15
Category : Technology & Engineering
Total pages :632
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Eco-efficient Repair and Rehabilitation of Concrete Infrastructures provides an updated state-of-the-art review on eco-efficient repair and rehabilitation of concrete infrastructure. The first section focuses on deterioration assessment methods, and includes chapters on stress wave assessment, ground-penetrating radar, monitoring of corrosion, SHM using acoustic emission and optical fiber sensors. Other sections discuss the development and application of several new innovative repair and rehabilitation materials, including geopolymer concrete, sulfoaluminate cement-based concrete, engineered cementitious composites (ECC) based concrete, bacteria-based concrete, concrete with encapsulated polyurethane, and concrete with super absorbent polymer (SAPs), amongst other topics. Final sections focus on crucial design aspects, such as quality control, including lifecycle and cost analysis with several related case studies on repair and rehabilitation. 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. Delivers the latest research findings with contributions from leading international experts Provides fully updated information on the European standard on materials for concrete repair (EN 1504) Includes an entire sections on the state-of-the-art in NDT, innovative repair and rehabilitation materials, as well as LCC and LCA information

Eco-Efficient Repair of Concrete Infrastructures

Eco-Efficient Repair of Concrete Infrastructures
Author : Anonim
Publisher : Unknown
Release Date : 2018-05
Category :
Total pages :190
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Buildings and other structures have a convinced useful life, which depends on the specifications adopted. The large numbers of monuments, which are esteemed heritage structures, have stood well over a period of time. But some of these have shown signs of distress due to age, aggressive natural environment/industrial pollution etc. Further, distress gets aggravated due to overloading/ misuse of buildings. A few buildings have also failed due to faulty design / construction. Thus, Repairs & Rehabilitation of buildings are of vital importance. For many local governments the resulting challenges, such as extremely high demand for infrastructure investments, are amplified by persistent local issues such as rising informality, poverty and inequality within cities as well as global forces, including globalization, climate change and increasing natural and human-caused disasters and conflicts and high energy costs. The transition from a "traditional" to an eco-efficient building takes place more easily and with greater emphasis in the planning of new buildings, through the introduction of a high potential in terms of experimentation and applied research on building systems and components. The refurbishment of existing buildings raises several questions and presents considerable difficulties, especially when the intervention involves a building bearer of intrinsic meaning and historical, constructive and cultural values. Eco-efficient Repair and Rehabilitation of Concrete Infrastructures provides the state-of-the-art review on eco-efficient repair and rehabilitation of concrete infrastructure, focusing on essential design aspects, such as quality control, as well as lifecycle and cost analysis with a number of real world cases on repair and rehabilitation. This book provides a literature review on concrete repair materials, highlighting the current problems face by them. It covers concrete surface treatments, patch repair and FRP strengthening. The potential of geopolymers to overcome those limitations is analyzed. It aims to provide practical tools to city planners and decision makers for addressing these challenges. This book serves as a valuable guiding tool for students, civil and structural engineers, architects, structural designers, materials scientists, and contractors working in the construction industry.

Nanotechnology in Eco-efficient Construction

Nanotechnology in Eco-efficient Construction
Author : Fernando Pacheco-Torgal,Maria Vittoria Diamanti,Ali Nazari,Claes Goran-Granqvist,Alina Pruna,Serji Amirkhanian
Publisher : Woodhead Publishing
Release Date : 2018-11-22
Category : Technology & Engineering
Total pages :896
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Covering the latest technologies, Nanotechnology in eco-efficient construction provides an authoritative guide to the role of nanotechnology in the development of eco-efficient construction materials and sustainable construction. The book contains a special focus on applications concerning concrete and cement, as nanotechnology is driving significant development in concrete technologies. The new edition has 14 new chapters, including 3 new parts: Mortars and concrete related applications; Applications for pavements and other structural materials; and Toxicity, safety handling and environmental impacts. Civil engineers requiring an understanding of eco-efficient construction materials, as well as researchers and architects within any field of nanotechnology, eco-efficient materials or the construction industry will find this updated reference to be highly valuable. Addresses issues such as toxicity and LCA aspects New chapters covering safety handling on occupational exposure of nanoparticles and the assessment of personal exposure to airborne nanomaterials Discusses the effects of adding nano-particles on the durability and on the properties of geopolymers

Concrete Infrastructure Sustainability

Concrete Infrastructure Sustainability
Author : Alissa Kendall
Publisher : Unknown
Release Date : 2007
Category :
Total pages :129
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Proceedings of the ... Engineering Technology Conference on Energy

Proceedings of the ... Engineering Technology Conference on Energy
Author : Anonim
Publisher : Unknown
Release Date : 2001
Category : Energy development
Total pages :129
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Canadian Journal of Civil Engineering

Canadian Journal of Civil Engineering
Author : Anonim
Publisher : Unknown
Release Date : 2006
Category : Civil engineering
Total pages :129
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Development, Durability Studies and Application of High Performance Green Hybrid Fiber-Reinforced Concrete (HP-G-HyFRC) for Sustainable Infrastructure and Energy Efficient Buildings

Development, Durability Studies and Application of High Performance Green Hybrid Fiber-Reinforced Concrete (HP-G-HyFRC) for Sustainable Infrastructure and Energy Efficient Buildings
Author : Rotana Hay
Publisher : Unknown
Release Date : 2015
Category :
Total pages :221
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Concrete-related construction industry consumes considerable amount of energy, resulting in large CO2 release into the atmosphere. Cement which is used as the main binder in concrete is energy intensive to produce and contributes about 7% to total global anthropogenic carbon emission. Infrastructure across the globe suffers from durability problems and requires frequent repair and maintenance. This brings about high direct cost for rehabilitation and unaccounted indirect cost resulted from loss of productive time, traffic congestion and diversion, and in the process more CO2 emission. In the meantime, buildings which are part of the overall civil infrastructure system require extensive amount of energy to keep the internal environment comfortable to users. The sector accounts for about 40% of global primary energy consumption. With increasing population and demand, actions from various building disciplines are needed to build a more sustainable industry. This research addresses these issues through the development of a new high performance fiber-reinforced concrete, its durability studies and its application to reduce operational energy in buildings. Durability is critical for infrastructure systems whose frequent maintenance and rehabilitation pose adverse impacts to the environment and add considerable costs to the economy. By accounting for sustainability aspects from materials conception to usage and disposal, this study encompasses the concept of sustainability through life cycle consideration. This represents a deviation from conventional sustainable approach where a focus is usually spent on reducing embodied energy of concrete composites. The first area of focus was on the development of a new concrete composite called high performance green hybrid fiber-reinforced concrete (HP-G-HyFRC) reinforced with polyvinyl alcohol (PVA) micro- and hooked-end steel macrofibers. For easy construction and durability, the design criteria were defined to cover high workability, high strength and deflection hardening which is defined as an ability of the composite to carry increasing load after the first crack is formed. It was demonstrated that theoretical analysis could be used to limit the number of trials in determining the critical fiber volume fractions for the deflection hardening behavior in the composite. As compared to conventional self-consolidating concrete (SCC), fine aggregate over coarse aggregate ratio had to be increased in FRC for enhanced workability. Addition of supplementary cementitious materials (SCMs) in concrete especially fly ash helped to improve the composite's workability. This is attributed to fly ash's favorable fineness, size distribution and spherical shape which resulted in ball-bearing action provided to other concrete constituents. PVA microfibers controlled propagation of micro cracks inherent in concrete or formed during loading. They also provided toughening around steel fibers and ensured a gradual pullout of steel fibers. The synergy of PVA micro- and steel macrofibers led to a smooth deflection hardening behavior of the composite under flexure at a relatively low fiber volume fractions of 1.5% steel fibers and 0.15% PVA fibers. A study on corrosion performance of HP-G-HyFRC with accelerated corrosion test with an impressed current was then conducted. It was found that wide cracks ranging from 1.1 to 2 mm were observed in high performance concrete (HPC) without fibers. The presence of hybrid fibers in HP-G-HyFRC, on the other hand, reduced corrosion rates by half, attributable to crack bridging of fibers and the resulting formation of distributed cracks of small sizes. Also, under no applied current, all embedded steel rebars in HP-G-HyFRC were in the inactive corrosion zone even with the presence of 4% NaCl in the mixing water. Microscopic observation at steel-concrete interface showed a densification of corrosion products, which is postulated to limit iron dissolution and subsequently to reduce corrosion rates of the embedded bars. HP-G-HyFRC corrosion samples were also able to retain most of its strength after the accelerated corrosion tests. As corrosion resistance of HP-G-HyFRC was considered at a composite level, the effects of individual mix component such as slag and fibers on corrosion were yet unknown. The next area of focus was on the influence of high-volume slag as cement replacement, hybrid fibers and steel-concrete interface on corrosion of steel in concrete. The studies elaborated various phenomena observed in the corrosion study of HP-G-HyFRC and also provided a fundamental understanding of different concrete parameters on corrosion. It was found that due to shrinkage-induced cracking and possibly poor quality passive film due to the presence of reducing agents in concrete pore solutions, samples with 60% slag replacement and with no fiber reinforcement showed an early corrosion initiation and higher mass loss induced by the impressed current. Microstructural imaging showed that the samples with slag, despite having a higher gas permeability, showed a denser matrix but more continuous distributed microcracking in the matrix. This led to its poor ability to accommodate corrosion products at the interface and as a result the concrete experienced an early onset of cracking. Under the same regime of applied current, samples made of slag concrete also experienced higher gravimetric mass losses. This is attributed to a less stable passive film and more intense acidification at the interface due to a reduction in calcium hydroxide (CH) in the matrix. Also, an inclusion of hybrid fibers in concrete slightly increased concrete permeability although this did not adversely affect corrosion initiation performance of concrete. However, under propagation stage achieved by an induced current, hybrid fibers in concrete significantly reduced corrosion rates through confinement and densification of corrosion products at steel-concrete interface. The influence of interface qualities on corrosion of steel in concrete showed conflicting performance in corrosion initiation and propagation stages. It was found that higher porosity at the steel-concrete interface initiated an early corrosion. However, the porous interface could accommodate more corrosion products. This led to a smaller pressure buildup from the corrosion products and less damage to the surrounding concrete. As a result, smaller corrosion rates were observed in the samples with more porous interfaces after impressed current regimes. The finding helps to explain the more extensive damage in high performance concrete (HPC) as compared to normal strength concrete. This warrants the inclusion of fibers in HPC to extend the service life of structures constructed with the composite. The study ended with a proposed application of HP-G-HyFRC in an innovative double skin façade (DSF) system in place of a conventional solid façade system to enhance operational energy performance of buildings. It was found that although the DSF is more energy intensive and more costly to construct, it allowed for a full recovery of the additional embodied energy within the first year of operation and cost recovery within the first 6 years of operation. The overall study exemplifies a life-cycle consideration adopted for materials design, durability investigation and application to ensure more sustainable infrastructure and buildings for our society.

Concrete International

Concrete International
Author : Anonim
Publisher : Unknown
Release Date : 2008
Category : Concrete
Total pages :129
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The Indian Concrete Journal

The Indian Concrete Journal
Author : Anonim
Publisher : Unknown
Release Date : 1997
Category : Concrete construction
Total pages :129
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Infrastructure Directory 2004

Infrastructure Directory 2004
Author : Anonim
Publisher : Unknown
Release Date : 2005
Category : Infrastructure (Economics)
Total pages :176
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Public Infrastructure Asset Management, Second Edition

Public Infrastructure Asset Management, Second Edition
Author : Waheed Uddin,W. Ronald Hudson,Ralph C.G. Haas
Publisher : McGraw Hill Professional
Release Date : 2013-07-30
Category : Business & Economics
Total pages :522
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"This comprehensive resource provides thorough coverage of the tools and techniques used in planning, building, maintaining, and fixing civil infrastructure. Thoroughly updated throughout, Public Infrastructure Asset Management, Second Edition presents the framework and elements of life cycle management of civil infrastructure assets in the context of current practice. The book explains how to achieve the optimal integrated, multi-disciplinary set of strategies (design, construction, maintenance, rehabilitation, and renovation) necessary to manage and sustain modern public physical infrastructure assets. These include: roads and bridges / airports / ports / public utilities / water and wastewater facilities / mass transit systems / hospitals / schools / parks and recreation facilities / sports complexes. The book has been thoroughly revised to reflect the impact of built infrastructure on the environment, social concerns, new technologies and scientific developments, and the impacts of natural and man-made disasters. Covers valuation of infrastructure assets, largely in response to Government Accounting Standards Requirements such as GASB34 in the United States, PSAB3150 in Canada, and similar standards in Australia Addresses the adverse environmental impacts of deteriorating air quality, GHG emissions, excessive noise, and available mitigation strategies Includes specific approaches to sustainability including green methodologies, resource conservation, re-use of materials, renewable energy Financing models for publicly owned infrastructure and for public-private-partnerships (P3s) Addresses online infrastructure (data access, mobile apps, cloud computing) and how these infrastructure services are assessed and provided Adds new and/or updated methodologies on performance measures related to sustainability, security, level of service provisions, safety, institutional effectiveness, preservation of assets and investments, technologies for in-service monitoring, data analysis, prioritization, and decisionsupport and knowledge management "--

Eldoret East

Eldoret East
Author : Kenya. Ministry of State for Planning, National Development, and Vision 2030
Publisher : Unknown
Release Date : 2009
Category : Kenya
Total pages :129
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Info Source

Info Source
Author : Canada
Publisher : Unknown
Release Date : 2007
Category : Administrative agencies
Total pages :129
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Updates of the Philippine Development Plan, 1990-1992

Updates of the Philippine Development Plan, 1990-1992
Author : Anonim
Publisher : Unknown
Release Date : 1990
Category : Philippines
Total pages :190
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Acoustic Emission Testing

Acoustic Emission Testing
Author : Ronnie K. Miller,Eric v. K. Hill,Patrick O. Moore
Publisher : Amer Society for Nondestructive
Release Date : 2005
Category : Technology & Engineering
Total pages :446
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