scholarly journals Current bridge deck rehabilitation practices : use and effectiveness

2021 ◽  
Author(s):  
Melvin Ramcharitar
Keyword(s):  
North America ◽  
Service Life ◽  
Environmental Impacts ◽  
Old Age ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Winter Season ◽  
Department Of Transportation ◽  
Repair Operation ◽  
Bridge Rehabilitation

Approximately thirty to forty percent of all bridges across North America have some form of deterioration on them. Many organizations/agencies across North America are investing significant amounts of money on repairing and rehabilitating their bridges. The reason being, these bridges are deteriorating due to heavy use (overloading from today's oversized trucks), old age (many built in late 1950s and 1960s) and environmental and chemical attacks (deicing salt applications during the winter season). The purpose of this thesis concentrated on one area, namely bridge decks. To better understand how these organizations/agencies were dealing with bridge deck deterioration, a survey containing thirteen questions was developed and sent out throughout North America, to Department of Transportation, Ministry of Transportation, Municipalities, Bridge Authorities and Consultants. The survey was made up of six parts, each focusing on different areas during a bridge rehabilitation/repair operation. Areas looked at were: Condition Surveys, Concrete Removal, Rehabilitation Techniques, Environmental Impacts and Service Life.

scholarly journals Current bridge deck rehabilitation practices : use and effectiveness

2021 ◽  
Author(s):  
Melvin Ramcharitar
Keyword(s):  
North America ◽  
Service Life ◽  
Environmental Impacts ◽  
Old Age ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Winter Season ◽  
Department Of Transportation ◽  
Repair Operation ◽  
Bridge Rehabilitation

Approximately thirty to forty percent of all bridges across North America have some form of deterioration on them. Many organizations/agencies across North America are investing significant amounts of money on repairing and rehabilitating their bridges. The reason being, these bridges are deteriorating due to heavy use (overloading from today's oversized trucks), old age (many built in late 1950s and 1960s) and environmental and chemical attacks (deicing salt applications during the winter season). The purpose of this thesis concentrated on one area, namely bridge decks. To better understand how these organizations/agencies were dealing with bridge deck deterioration, a survey containing thirteen questions was developed and sent out throughout North America, to Department of Transportation, Ministry of Transportation, Municipalities, Bridge Authorities and Consultants. The survey was made up of six parts, each focusing on different areas during a bridge rehabilitation/repair operation. Areas looked at were: Condition Surveys, Concrete Removal, Rehabilitation Techniques, Environmental Impacts and Service Life.

scholarly journals Conditional survival analysis for concrete bridge decks

2019 ◽  
Vol 9 (1) ◽  
pp. 63-75
Author(s):  
Azam Nabizadeh ◽  
Habib Tabatabai ◽  
Mohammad A. Tabatabai
Keyword(s):  
Service Life ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Conditional Survival ◽  
Probability Of Survival ◽  
Concrete Bridge Decks ◽  
Maintenance Decisions ◽  
National Bridge Inventory ◽  
Specific Number

AbstractBridge decks are a significant factor in the deterioration of bridges, and substantially affect long-term bridge maintenance decisions. In this study, conditional survival (reliability) analysis techniques are applied to bridge decks to evaluate the age at the end of service life using the National Bridge Inventory records. As bridge decks age, the probability of survival and the expected service life would change. The additional knowledge gained from the fact that a bridge deck has already survived a specific number of years alters (increases) the original probability of survival at subsequent years based on the conditional probability theory. The conditional expected service life of a bridge deck can be estimated using the original and conditional survival functions. The effects of average daily traffic and deck surface area are considered in the survival calculations. Using Wisconsin data, relationships are provided to calculate the probability of survival of bridge decks as well as expected service life at various ages. The concept of survival dividend is presented and the age when rapid deterioration begins is defined.

scholarly journals Prediction of Remaining Life for Bridge Decks Considering Deterioration Factors and Propose of Prioritization Process for Bridge Deck Maintenance

2020 ◽  
Vol 12 (24) ◽  
pp. 10625
Author(s):  
Ki Hwan Kim ◽  
Moon S. Nam ◽  
Hoon Hee Hwang ◽  
Ki Yong Ann
Keyword(s):  
Service Life ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Highway Bridges ◽  
Performance Degradation ◽  
Remaining Life ◽  
Remaining Service Life ◽  
Prioritization Process ◽  
Optimizing Design ◽  
Inspection Data

Aged highway bridges have become substantially prevalent in recent years. Moreover, combined deterioration, caused by using deicing agents in winter, has led to increased bridge maintenance costs. Accordingly, to extend the service life of bridge decks, this study utilized actual inspection data and major deterioration factors to derive the remaining service life of bridge decks. Based on this study, the following three factors are selected: deicing agent exposure grade, pavement condition state, and surface improvement status. Performance degradation curves were derived for 11 cases that considered the representative three deterioration factors, and the performance degradation of decks was examined for each deterioration factor. Additionally, a process to determine maintenance priorities, using the current condition of highway bridges and the deterioration factors of individual bridges, was proposed. The maintenance demand was predicted based on the end of deck life, which indicated that the demand for deck replacement will sharply increase in 15 years, and that the decks of more than 2000 bridges will reach the end of life in 40 years. Furthermore, this paper proposes a process for prioritizing the maintenance of approximately 9000 highway bridge decks. By applying the prioritization process for bridge deck maintenance to the bridge deck, not only can the life of the bridge deck be extended, but also environmental pollution can be minimized. Additionally, an optimizing design for bridge decks, by considering the remaining life and deterioration factors, can be possible. Therefore, it is expected that the sustainability of the bridge deck can be accomplished.

scholarly journals Behavior of FRP Link Slabs in Jointless Bridge Decks

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Aziz Saber ◽  
Ashok Reddy Aleti
Keyword(s):  
Bridge Deck ◽  
Bridge Decks ◽  
Development Program ◽  
Theoretical Work ◽  
Department Of Transportation ◽  
Concrete Bridge Decks ◽  
Reinforced Plastic ◽  
Federal Highway ◽  
New Construction ◽  
Jointless Bridge

The paper investigated the use of fiberglass-reinforced plastic (FRP) grid for reinforcement in link slabs for jointless bridge decks. The design concept of link slab was examined based on the ductility of the fiberglass-reinforced plastic grid to accommodate bridge deck deformations. The implementation of hybrid simulation assisted in combining the experimental results and the theoretical work. The numerical analyses and the experimental work investigated the behavior of the link slab and confirmed its feasibility. The results indicated that the technique would allow simultaneous achievement of structural need, lower flexural stiffness of the link slab approaching the behavior of a hinge, and sustainability need of the link slab. The outcome of the study supports the contention that jointless concrete bridge decks may be designed and constructed with fiberglass-reinforced plastic grid link slabs. This concept would also provide a solution to a number of deterioration problems associated with bridge deck joints and can be used during new construction of bridge decks. The federal highway administration provided funds to Louisiana Department of Transportation through the innovative bridge research and development program to implement the use of FRP grid as link slab.

Rehabilitation of bridges using aluminum decks

2001 ◽  
Vol 28 (6) ◽  
pp. 992-1002 ◽  
Author(s):  
Paul Arrien ◽  
Josée Bastien ◽  
Denis Beaulieu
Keyword(s):  
Numerical Modeling ◽  
Economic Analysis ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Grid Method ◽  
Economic Study ◽  
Bridge Rehabilitation ◽  
Traffic Loads ◽  
The Cost

The rehabilitation of highway and road bridges is without any question one of today's major challenges. It is to keep up with this challenge that this paper presents an innovative bridge rehabilitation technique which consists in using aluminum decking to replace deteriorated bridge decks. Numerical modeling was carried out on a favored type of decking in order to study and analyze its performance under Canadian traffic loads. Also, an economic analysis was made on a case-study bridge, in order to compare the costs of the proposed technique to the cost of the method currently used by the Quebec Ministry of Transportation for the rehabilitation of certain types of bridge deck.Key words: aluminum, bridge, deck, economic study, extrusion, grid method, rehabilitation.

ENVIRONMENTAL IMPACTS OF THE FORMER NEW IDRIA MINE, THE SECOND LARGEST MERCURY MINE IN NORTH AMERICA, NEW IDRIA, CA

2020 ◽  
Author(s):  
Rachel A. Hohn ◽  
◽  
Byran C. Fuhrmann ◽  
Cindy De Jesus Bartolo ◽  
Kyle H. Ikeda ◽  
...  
Keyword(s):  
North America ◽  
Environmental Impacts ◽  
Mercury Mine

Macdonald Bridge Suspended Spans Deck Replacement:Construction Engineering Challenges and Solutions

2016 ◽  
Author(s):  
Dusan Radojevic ◽  
Keith Kirkwood
Keyword(s):  
Nova Scotia ◽  
Wind Tunnel ◽  
Service Life ◽  
Bridge Deck ◽  
Suspension Bridge ◽  
Wind Tunnel Testing ◽  
Aerodynamic Stability ◽  
Bridge Superstructure ◽  
Suspended Structure ◽  
Analysis Models

The Angus L. Macdonald Bridge, a major suspension bridge that crosses Halifax Harbour in Halifax, Nova Scotia, opened to traffic in 1955. The bridge deck has reached the end of its service life, and the design of the new bridge superstructure and its replacement sequence were completed in 2014. The entire suspended structure and hangers are now being replaced sequentially during night and weekend closures while the bridge is opened for traffic during the daytime. The erection sequence is supported by sophisticated automated erection analysis models which take into account the geometry of the existing bridge, positioning of the erection equipment on the deck, and hanger and strand jack adjustments that are required during construction. Significant wind tunnel testing and analysis have been performed to ensure aerodynamic stability of the bridge during erection and in its final condition.

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