Author: W. Spencer Guthrie
Publisher:
ISBN:
Category : Concrete bridges
Languages : en
Pages : 68
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Book Description
The purpose of this research was to develop a new index for concrete bridge deck management in Utah. Visual inspection, sounding, Schmidt hammer, half-cell potential, and chloride concentration data were collected in the summer of 2005 from 15 concrete bridge decks in the vicinity of Salt Lake City. Collected data were analyzed using statistics, and age, cover, and half-cell potential were ultimately selected for inclusion in a new Utah Bridge Deck Index (UBDI); these variables effectively reflect chloride-induced corrosion mechanisms active on Utah bridge decks, are highly correlated to delamination distresses, and are relatively easy to measure compared to chloride concentration.
Author: Ellen T. White
Publisher:
ISBN:
Category : Concrete bridges
Languages : en
Pages : 68
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Book Description
In addition, the possibility of treatment applications was considered, leading to required adjustments in the UBDI calculation; the treatment options that were considered include an epoxy seal, an HPC overlay, and an asphalt membrane overlay. Four case scenarios were developed to demonstrate the response of the revised UBDI equation to these treatments. Finally, as aids for UDOT personnel implementing this research, charts were created to facilitate rapid determination of the required number of half-cell potential and concrete cover measurements for different levels of reliability and tolerance.
Author: Mauricio Sánchez-Silva
Publisher: Springer
ISBN: 3319209469
Category : Technology & Engineering
Languages : en
Pages : 371
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Book Description
This book compiles and critically discusses modern engineering system degradation models and their impact on engineering decisions. In particular, the authors focus on modeling the uncertain nature of degradation considering both conceptual discussions and formal mathematical formulations. It also describes the basics concepts and the various modeling aspects of life-cycle analysis (LCA). It highlights the role of degradation in LCA and defines optimum design and operation parameters. Given the relationship between operational decisions and the performance of the system’s condition over time, maintenance models are also discussed. The concepts and models presented have applications in a large variety of engineering fields such as Civil, Environmental, Industrial, Electrical and Mechanical engineering. However, special emphasis is given to problems related to large infrastructure systems. The book is intended to be used both as a reference resource for researchers and practitioners and as an academic text for courses related to risk and reliability, infrastructure performance modeling and life-cycle assessment.
Author: Robert S. Tuttle
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 110
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Book Description
Given the need for increasingly cost-effective strategies for bridge deck maintenance, rehabilitation, and replacement, the Utah Department of Transportation (UDOT) initiated this research to ultimately develop a protocol offering guidance as to whether deteriorated bridge decks should be rehabilitated or replaced.
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 2248
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 586
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Book Description
Author:
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 896
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Book Description
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1228
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Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Author: W. Spencer Guthrie
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 110
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Book Description
Author: Robert S. Tuttle
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 110
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Book Description
Several evaluation techniques were employed to assess concrete bridge deck condition, including visual inspection, hammer sounding and chaining, dielectric measurements, ground-penetrating radar imaging, resistivity testing, half-cell potential testing, and chloride concentration testing. The condition assessment testing confirmed that chloride-induced corrosion of reinforcing steel is the primary mechanism of deck deterioration and that inadequate cover over the upper steel mat facilitated accelerated corrosion damage in many instances. The bridge deck condition analyses produced from the results of non-destructive testing were compared to the visual inspection ratings assigned to each deck by UDOT.
