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21
Aug
2018
Technical Reports
Material and Manufacturing Requirements for Freeze-Thaw Durable Concrete Railroad Ties: Volume I
Subject
Testing
Keywords: Concrete consolidation, air void system, freeze-thaw durability, concrete crosstie
Abstract: This research program was conducted as a partnership between the University of Illinois at Urbana-Champaign (UIUC), Kansas State University (KSU), and the Illinois Department of...
Report Number
DOT/FRA/ORD-18/31
Office
RDI-21
20
Aug
2018
Presentations
PTC Symposium #3 August 20, 2018: PTC System Certification
Subject
Positive Train Control
Keywords: Positive Train Control
Abstract: PTC Safety Plan Prerequisites, Preparation, Content, Supporting Data and Review Process
Presenter
Federal Railroad Administration
Location
Washington, DC
United States
1
Aug
2018
Research Results
Understanding the Splitting and Bursting Failure of Concrete Crossties
Subject
Analysis
Keywords: Pretensioned concrete crosstie, splitting crack, bursting crack, concrete release strength, prestressing wire, prestressing strand, bond strength, finite element analysis
Abstract: Under the sponsorship of the Federal Railroad Administration, finite element (FE) analyses were conducted at the Volpe National Transportation Systems Center (Volpe Center)...
Report Number
RR 18-12
Office
RDI-21
30
Jul
2018
Technical Reports
Field Demonstration of Geocell Track Substructure Support System Under High-Speed Passenger Railroad Operations
Subject
Track
Keywords: Track geometry, high-speed track, track quality index, TQI, ballast, sub-ballast, subgrade, Surfacing Cycle, geocell, Neoweb™, Amtrak, Northeast Corridor, NEC
Abstract: Regions of track, which experience high rates of track geometry degradation, tend to require frequent maintenance interventions that are typically surfacing or tamping. Harsco...
Report Number
DOT/FRA/ORD-18/27
Office
RDI-21
26
Jul
2018
Presentations
Environmental Review
Subject
Environmental Protection
Keywords: Environment, NEPA
Abstract: The Federal Railroad Administration hosted a webinar on its Environmental Review process on July 26, 2018.
Presenter
Andrea Martin
Audience
FRA HQ
Location
Washington, DC
United States