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Phasing Down Lead in Gasoline through Economic Instruments
Publisher: American Society of Civil Engineers
Abstract: The phaseout of leaded gasoline in the United States was accomplished through a series of measures known as the lead‐phasedown program. In accomplishing this program, the regulations promulgated by the Environmental ...
A WIM-Based Assessment of Multiple Vehicle Presence Effects on Fatigue Damage of Highway Bridges
Publisher: American Society of Civil Engineers
Abstract: The fatigue provisions for bridge design in North America and Europe are highly simplified for the sake of practical implementation, in comparison with the state of the art in understanding of the true fatigue behavior. ...
Geometrical and Material Characterization of Quenched and Self-Tempered Steel Reinforcement Bars
Publisher: American Society of Civil Engineers
Abstract: Quenched and self-tempered (QST) steel reinforcement bars (rebars) are manufactured by Thermex or Tempcore processes. Characterization studies of QST rebars are mostly limited to reveal the hardened outer layer and some ...
Fatigue Strength Upgrading of Cover Plate Ends by Welded Extensions in Existing Steel Bridge Girders
Publisher: American Society of Civil Engineers
Abstract: This paper investigates the fatigue upgrading of typical cover plate joint connections in existing steel bridge girders through cover plate extension. The upgraded detail is created by removing the existing transverse end ...
Geometrical and Material Characterization of Quenched and Self-Tempered Steel Reinforcement Bars
Publisher: American Society of Civil Engineers
Abstract: Quenched and self-tempered (QST) steel reinforcement bars (rebars) are manufactured by Thermex or Tempcore processes. Characterization studies of QST rebars are mostly limited to reveal the hardened outer layer and some ...
Strengthening of Steel Connections in a 92-Year-Old Railway Bridge Using Prestressed CFRP Rods: Multiaxial Fatigue Design Criterion
Publisher: ASCE
Abstract: This paper presented a new retrofit system for strengthening the stringer-to-floor-beam double-angle connections in a 92-year-old riveted railway bridge in Switzerland, using prestressed carbon fiber-reinforced polymer ...
Development of a Mechanical Wedge–Barrel Anchor for CFRP Rods: Static and Fatigue Behaviors
Publisher: ASCE
Abstract: In this study, a mechanical anchorage for prestressed carbon fiber–reinforced polymer (CFRP) rods was proposed. The proposed anchorage consisted of a steel barrel with a conical hole and three separate aluminum wedges that ...
Multi-Dimensional Two-Phase Flow Modeling Applied to Interior Ballistics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Complex phenomena occur in a combustion chamber during a ballistic cycle. From the ignition of the black powder in the primer to the exit of the projectile through the muzzle, two-phase ...
Robust Mobile Ad Hoc Space for Collaboration to Support Disaster Relief Efforts Involving Critical Physical Infrastructure
Publisher: American Society of Civil Engineers
Abstract: When an extreme event hits an urban area, the efficiency and effectiveness of the first response have a profound effect on disaster relief efforts. The redefinition of the civil engineers’ role and responsibilities as first ...
Simultaneous Vehicle Crossing Effects on Fatigue Damage Equivalence Factors for North American Roadway Bridges
Publisher: American Society of Civil Engineers
Abstract: In many design codes for roadway bridges, fatigue design involves passing a load model over an influence line for a critical location on the bridge and then determining the resulting nominal stress range. For fatigue design ...
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