High Performance Concrete Bridge Decks A Fast Track Implementation Study Volume 2 Materials
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High Performance Concrete Bridge Decks A Fast Track Implementation Study Volume 2 Materials
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Author : Mateusz Radlinski
language : en
Publisher: Purdue University Press
Release Date : 2008-11-01
High Performance Concrete Bridge Decks A Fast Track Implementation Study Volume 2 Materials written by Mateusz Radlinski and has been published by Purdue University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11-01 with Transportation categories.
The purpose of this research was to examine the applicability of ternary binder systems containing ordinary portland cement (OPC), class C fly ash (FA) and silica fume (SF) for bridge deck concrete. This was accomplished in two parts, the laboratory part and a field application part. During the laboratory studies, four ternary mixtures, each containing either 20% or 30% FA and either 5% or 7% SF were subjected to four different curing regimes (air drying, 7 days curing compound application and 3 or 7 days wet burlap curing). In general, all four ternary mixtures exhibited very good water and chloride solution transport-controlling properties (resistance to chloride-ion penetration, chloride diffusivity and rate of water absorption). However, it was concluded that in order to ensure adequate strength, good freezing and thawing resistance, satisfactory resistance to salt scaling, and adequate shrinkage cracking resistance the FA content should not exceed 20%, SF content should not exceed 5% (by total mass of binder) and paste content should be kept below 24% by volume of concrete. Further, wet burlap curing for a minimum of 3 days was required to achieve satisfactory performance and to obtain a reliable assessment of in-situ compressive strength (up to 28 days) using maturity method. The second part of this research examined the performance of ternary concrete containing 20% FA and 5% SF in the pilot HPC bridge deck constructed in northern Indiana. Using maturity method developed for the purpose of this study, it was determined that the unexpectedly high RCP values of concrete placed late in the construction season were mostly attributed to low ambient temperature. Additional applications of the developed maturity method were also demonstrated. These include assessment of risk of scaling and reduction in time to corrosion initiation as a function of construction date, as well as estimation of long-term RCP values of concrete subjected to accelerated curing.
High Performance Concrete Bridge Decks A Fast Track Implementation Study Volume 1 Structural Behavior
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Author : Robert J. Frosch
language : en
Publisher: Purdue University Press
Release Date : 2008-11-01
High Performance Concrete Bridge Decks A Fast Track Implementation Study Volume 1 Structural Behavior written by Robert J. Frosch and has been published by Purdue University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11-01 with Transportation categories.
Transverse cracking of concrete bridge decks is problematic in numerous states. Cracking has been identified in the negative and positive moment regions of bridges and can appear shortly after opening the structure to live loads. To improve the service life of the bridge deck as well as decrease maintenance costs, changes to current construction practices in Indiana are being considered. A typical bridge deck was instrumented which incorporated the following: increased reinforcement amounts, decreasing reinforcement spacing, and high-performance, low-shrinkage concrete. The low shrinkage concrete was achieved using a ternary concrete mix. The objective of this research was to determine the performance, particularly in terms of transverse cracking and shrinkage, of a bridge incorporating design details meant to reduce cracking. Based on measurements from the bridge, it was determined that maximum tensile strains experienced in the concrete were not sufficient to initiate cracking. An on-site inspection was performed to confirm that cracking had not initiated. The data was analyzed and compared with the behavior of a similarly constructed bridge built with nearly identical reinforcing details, but with a more conventional concrete to evaluate the effect of the HPC. Based on this study, it was observed that full-depth transverse cracks did not occur in the structure and that the use of HPC lowered the magnitude of restrained shrinkage strains and resulting tensile stresses.
High Performance Construction Materials
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Author :
language : en
Publisher:
Release Date :
High Performance Construction Materials written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Highway Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1993
Highway Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Highway engineering categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1996
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Science categories.
Nondestructive Testing To Identify Concrete Bridge Deck Deterioration
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Author :
language : en
Publisher: Transportation Research Board
Release Date : 2013
Nondestructive Testing To Identify Concrete Bridge Deck Deterioration written by and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Technology & Engineering categories.
" TRB's second Strategic Highway Research Program (SHRP 2) Report S2-R06A-RR-1: Nondestructive Testing to Identify Concrete Bridge Deck Deterioration identifies nondestructive testing technologies for detecting and characterizing common forms of deterioration in concrete bridge decks.The report also documents the validation of promising technologies, and grades and ranks the technologies based on results of the validations.The main product of this project will be an electronic repository for practitioners, known as the NDToolbox, which will provide information regarding recommended technologies for the detection of a particular deterioration. " -- publisher's description.
Ultra High Performance Concrete Uhpc
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Author : Michael Schmidt
language : en
Publisher:
Release Date : 2004
Ultra High Performance Concrete Uhpc written by Michael Schmidt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with High strength concrete categories.
Ultra High Performance Concrete
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Author : Ekkehard Fehling
language : en
Publisher: kassel university press GmbH
Release Date : 2008-01-01
Ultra High Performance Concrete written by Ekkehard Fehling and has been published by kassel university press GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-01 with High strength concrete categories.
Popular Science
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Author :
language : en
Publisher:
Release Date : 2004-12
Popular Science written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-12 with categories.
Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.
Ultra High Performance Concrete Uhpc
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Author : Ekkehard Fehling
language : en
Publisher: John Wiley & Sons
Release Date : 2015-04-20
Ultra High Performance Concrete Uhpc written by Ekkehard Fehling 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 2015-04-20 with Technology & Engineering categories.
Selected chapters from the German concrete yearbook are now being published in the new English "Beton-Kalender Series" for the benefit of an international audience. Since it was founded in 1906, the Ernst & Sohn "Beton-Kalender" has been supporting developments in reinforced and prestressed concrete. The aim was to publish a yearbook to reflect progress in "ferro-concrete" structures until - as the book's first editor, Fritz von Emperger (1862-1942), expressed it - the "tempestuous development" in this form of construction came to an end. However, the "Beton-Kalender" quickly became the chosen work of reference for civil and structural engineers, and apart from the years 1945-1950 has been published annually ever since. Ultra high performance concrete (UHPC) is a milestone in concrete technology and application. It permits the construction of both more slender and more durable concrete structures with a prolonged service life and thus improved sustainability. This book is a comprehensive overview of UHPC - from the principles behind its production and its mechanical properties to design and detailing aspects. The focus is on the material behaviour of steel fibre-reinforced UHPC. Numerical modelling and detailing of the connections with reinforced concrete elements are featured as well. Numerous examples worldwide - bridges, columns, facades and roofs - are the basis for additional explanations about the benefits of UHPC and how it helps to realise several architectural requirements. The authors are extensively involved in the testing, design, construction and monitoring of UHPC structures. What they provide here is therefore a unique synopsis of the state of the art with a view to practical applications.