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11
Jun
2024
Technical Reports
Performance-Based Specifications for Concrete Railroad Tie Freeze-Thaw Durability
Subject
Tracks & Structures
Keywords: Concrete railroad ties, freeze-thaw durability, manufacturing process control
Abstract: The University of Florida and the University of Illinois at Urbana-Champaign, in partnership with the Austrian firm voestalpine Railway Systems Nortrak, developed a performance...
Report Number
DOT/FRA/ORD-24/17
Office
RDI-21
3
Jun
2024
Technical Reports
A 3D Scanning Method to Measure Concrete Crosstie Geometry
Subject
Tracks & Structures
Keywords: infrastructure, railroad ties, 3D scanning, tie cross-section parameters, transfer length, shape factor, prestressed concrete, high speed rail
Abstract: The Federal Railroad Administration sponsored Kansas State University (K-State) in research to improve the design and performance of crossties. K-State used a Creaform...
Report Number
RR 24-05
Office
RDI-21
15
Apr
2019
Technical Reports
Quasi-Static Research Testing of Workstation Tables
Subject
Occupant Protection,
Crashworthiness - Passenger Equipment,
Testing
Keywords: Passenger rail car, workstation tables, energy absorption, interior crashworthiness, train collision safety
Abstract: Sharma & Associates, Inc. (SA) performed quasi-static destructive loading tests on two different designs of passenger workstation tables in accordance with the requirements of...
Report Number
DOT/FRA/ORD-19/08
Office
RDI-22
10
Sep
2018
Technical Reports
Material and Manufacturing Requirements for Freeze-Thaw Durable Concrete Railroad Ties, Appendices A Through C
Subject
Testing
Keywords: Concrete consolidation, air void system, freeze-thaw durability, concrete crosstie
Abstract: Appendix A documents additional rheological data taken on concrete during vibration; while Appendix B depicts the measured and predicted temperature and relative humidity of...
Report Number
DOT/FRA/ORD-18/31
Office
RDI-21
5
Sep
2018
Technical Reports
Inspection of Concrete Ties Using Sonic/Ultrasonic Impact Velocity and Impact Echo Measurements
Subject
Testing
Keywords: Concrete, crossties, ties, Rayleigh waves, impact echo, impact velocity
Abstract: This report documents NDT Corporation’s development of a non-destructive system for inspecting the internal condition of concrete crossties using sonic/ultrasonic impact velocity...
Report Number
DOT/FRA/ORD-18/32
Office
RDI-21