Concrete Bridge Deck Performance
Author: H. G. Russell
Publisher: Transportation Research Board
Published: 2004
Total Pages: 188
ISBN-13: 0309070112
DOWNLOAD EBOOKAt head of title: National Cooperative Highway Research Program.
Posts
Nondestructive Testing to Identify Concrete Bridge Deck Deterioration
Author:
Publisher: Transportation Research Board
Published: 2013
Total Pages: 96
ISBN-13: 0309129338
DOWNLOAD EBOOK" 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.
Cracking in Concrete Bridge Decks
Author: Tony R. Schmitt
Publisher:
Published: 1995
Total Pages: 174
ISBN-13:
DOWNLOAD EBOOKThe causes of cracking in bridge decks are investigated and procedures are recommended to alleviate the problem. Forty continuous steel girder bridges, thirty-seven composite and three noncomposite bridges are evaluated. Field surveys conducted to document cracking patterns and to determine the crack density of each bridge are described. Information collected from construction documents, field books, and weather data logs is presented and compared to the observed levels of cracking to identify correlations between cracking and the variables studied. Thirty-one variables are considered such as material properties, site conditions, construction procedures, design specifications, age of bridge and traffic volume. Based on the research reported herein, cracking in monolithic bridge decks increases with increasing values of concrete slump, percent volume of water and cement, water content, and compressive strength, and decreasing values of air content (especially below 6.0%). Bridge deck overlays placed with zero slump concrete consistently exhibit high levels of cracking. Cracking in overlays also increases as placement lengths increase. High maximum air temperatures and large changes in air temperature on the day of casting aggravate cracking in monolithic bridge decks. High average air temperatures and large changes in air temperature similarly aggravate cracking in bridge deck overlays. Both monolithic and two layer bridges with fixed-ended girders exhibit increased cracking near the abutments compared to those with pin-ended girders.
CIGOS 2021, Emerging Technologies and Applications for Green Infrastructure
Author: Cuong Ha-Minh
Publisher: Springer Nature
Published: 2021-10-28
Total Pages: 1861
ISBN-13: 9811671605
DOWNLOAD EBOOKThis book highlights the key role of green infrastructure (GI) in providing natural and ecosystem solutions, helping alleviate many of the environmental, social, and economic problems caused by rapid urbanization. The book gathers the emerging technologies and applications in various disciplines involving geotechnics, civil engineering, and structures, which are presented in numerous high-quality papers by worldwide researchers, practitioners, policymakers, and entrepreneurs at the 6th CIGOS event, 2021. Moreover, by sharing knowledge and experiences around emerging GI technologies and policy issues, the book aims at encouraging adoption of GI technologies as well as building capacity for implementing GI practices at all scales. This book is useful for researchers and professionals in designing, building, and managing sustainable buildings and infrastructure.
Thermal Cracking in Concrete at Early Ages
Author: R. Springenschmid
Publisher: CRC Press
Published: 1994-10-13
Total Pages: 500
ISBN-13: 9780419187103
DOWNLOAD EBOOKRestraint and intrinsic stresses in concrete at early ages are vitally important for concrete structures which must remain free of water-permeable cracks, such as water-retaining structures, tunnel linings, locks and dams. The development of hydration heat, stiffness and strength, also the degree of restraint and, especially for high-strength concrete, non-thermal effects, are decisive for sensitivity to cracking. Determining thses stresses in the laboratory and in construction components has led to a clearer understanding of how they develop and how to optimize mix design, temperature and curing conditions. New testing equipment has enabled the effects of all the important parameters to be qualified and more reliable models for predictiong restraint stresses to be developed. Thermal Cracking in Conrete at Early Ages contains 56 contributions by leading international specialists presented at the RILEM Symposium held in October 1994 at the Technical University of Munich. It will be valuable for construction and site engineers, concrete technologists and scientists.
Cracking in Bridge Decks
Author: Pui-shum B. Shing
Publisher:
Published: 1999
Total Pages: 182
ISBN-13:
DOWNLOAD EBOOKThis report summarizes the findings of a study whose primary objectives are to determine the cause of extensive transverse cracking that has been observed in some existing bridge decks, and to identify the change of material specifications and construction practice that is necessary to reduce the severity of deck cracking. To achieve these goals, recent studies on the cause of bridge deck cracking were reviewed, an experimental study was conducted to compare the shrinkage properties of different concrete mixes, and the current material and design specifications and construction practice adopted by the Colorado Department of Transportation (CDOT) were reviewed to identify areas that need improvement. A survey was conducted on seven newly constructed bridges to examine the extent of cracking in concrete decks that were constructed with the different mix designs and curing procedure that were currently used by CDOT.
Cracks in Concrete Bridge Decks
Author: D. Campbell-Allen
Publisher:
Published: 1978
Total Pages: 52
ISBN-13:
DOWNLOAD EBOOKReflective Cracking in Pavements
Author: L. Francken
Publisher: CRC Press
Published: 1996-09-26
Total Pages: 582
ISBN-13: 9780419222606
DOWNLOAD EBOOKProceedings of RILEM TC-PRC third conference on this subject. Papers from road authorities, engineers, researchers, contractors and manufacturers discussing the implementation and the long term behaviour of overlay systems. The following topics are covered: prevention and cracking assessment, choice and design of overlay systems, practical implementation, case histories and long term performance.
Bridge Deck Behaviour
Author: E C Hambly
Publisher: CRC Press
Published: 1991-07-25
Total Pages: 334
ISBN-13: 1482267160
DOWNLOAD EBOOKThis book describes the underlying behaviour of steel and concrete bridge decks. It shows how complex structures can be analysed with physical reasoning and relatively simple computer models and without complicated mathematics.
Sensing Issues in Civil Structural Health Monitoring
Author: Farhad Ansari
Publisher: Springer Science & Business Media
Published: 2005-07-14
Total Pages: 552
ISBN-13: 9781402036606
DOWNLOAD EBOOKCivil infrastructure systems are generally the most expensive assets in any country, and these systems are deteriorating at an alarming rate. In addition, these systems have a long service life in comparison to most other commercial products. As well, the introduction of intelligent materials and innovative design approaches in these systems is painfully slow due to heavy relianceon traditional construction and maintenance practices, and the conservative nature of design codes. Feedback on the "state of the health" of constructed systems is practically nonexistent. In the quest for lighter, stronger and corrosion-resistant structures, the replacement of ferrous materials by high-strength fibrous ones is being actively pursued in several countries around the world, both with respect to the design of new structures as well as for the rehabilitation and strengthening of existing ones. In North America, active research in the design of new highway bridges is focused on a number of specialty areas, including the replacement of steel reinforcing bars in concrete deck slabs by randomly distributed low-modulus fibers, and the replacement of steel prestressing cables for concrete components by tendons comprising super-strong fibers. Research is also being conducted on using FRPs to repair and strengthen existing structures.
