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Showing 1 to 20 of 144 for “"Concrete Bridge"”.
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Concrete bridge prioritization system
An alternative method of prioritization for concrete bridge maintenance, repair, and rehabilitation activities is required due to the inability of the current system to manage the increasing numnber of aging concrete bridges. The Concrete Bridge Prioritization System was proposed because of its …
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Evaluation of concrete bridge deck overlays
… been used by many states for the protection of bridge decks, but the premature delaminations and failures have been observed in many cases. A comprehensive study was recently defined to investigate overlay performance in collaboration with the West Virginia Department of Transportation-Division …
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Performance of Concrete Bridge Deck Joints
… the types of joints available for use on concrete bridge decks and to investigate the performance characteristics of each type, including primary functions and movement ranges. Eleven reports on joint performance published by state departments of transportation and universities nationwide …
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Concrete Bridge Girders with Exposed Flexural Reinforcement
Reinforced concrete highway bridge girders are regularly repaired by replacing deteriorated concrete with new concrete, temporarily exposing the flexural reinforcement. The absence of bond between the concrete and steel at this stage makes it difficult to compute the flexural capacity and the …
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Performance of Concrete Bridge Deck Surface Treatments
… types of surface treatments available for use on concrete bridge decks and to determine which materials are most capable of providing long-term protection from contamination by chloride ions. The products addressed in this report primarily include urethanes, silicon-based sealers, and epoxies. An …
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GPR data processing for reinforced concrete bridge decks
… several aspects of GPR data processing for RC bridge decks are studied. First, autofocusing techniques are proposed to replace the previous expensive and unreliable human visual inspections during the iterative migration process for the estimation of the velocity/dielectric permittivity …
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Crack detection technique for reinforced concrete bridge decks
… instrumentation and test results of a reinforced concrete bridge deck constructed on 3-span continuous steel girders. The instrumented bridge is located in Evansville, West Virginia at the intersection of US Route 50 East and WV 92 South. An instrumentation system is developed and implemented …
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Seismic Performance of Self-Consolidating Concrete Bridge Columns
… the seismic performance of self-consolidating concrete (SCC) bridge columns. This study included literature review, experimental evaluation of concrete mixtures, experimental testing of reinforced concrete bridge columns under combined axial loading and lateral load reversals, and analytical …
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Condition Analysis of Concrete Bridge Decks in Utah
Concrete bridge decks in Utah are experiencing observable deterioration due primarily to freeze-thaw cycles and the routine application of deicing salts during winter maintenance activities. Given the need for increasingly cost-effective strategies for bridge deck maintenance, rehabilitation, and …
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Concrete bridge deck assessment using thermography and radar
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1987.
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Interface Shear Strength in Lightweight Concrete Bridge Girders
… and cast-in-place decks are a typical type of concrete bridge construction. A key part of this type of construction is developing composite action between the girder and deck. In order to develop composite action, adequate horizontal shear resistance must be provided at the interface. As …
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Automated detection of wave velocities in concrete bridge decks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1998.
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C-Grid as Shear Reinforcement in Concrete Bridge Girders
… reinforcing steel causes shorter life spans in bridges throughout the United States. The use of carbon fiber reinforced polymer (CFRP) materials as the flexural reinforcement in bridge girders has been extensively studied. However, CFRP transverse reinforcement has not been as rigorously …
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Development of an expert system for reinforced concrete bridge repair.
Current techniques for selecting reinforced concrete repair materials are often based on ad-hoc methods for specifying repair material properties. The inherent lack of understanding of material behaviour in this approach can lead to premature failure of repairs.This research has examined state of …
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Automatic delamination detection of concrete bridge decks using acoustic signatures
Thesis (Ph. D.)--Michigan State University. Department of Civil Engineering, 2010
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Carbonation of concrete bridge structures in three South African localities
… data measured from approximately 30 in-service bridges in each locality. One of the uses of the derived models was to allow the preparation of maintenance plans so as to avoid carbonation-induced corrosion for structures in these localities. Since the rate of carbonation depends strongly on …
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