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52550
  
  

  10
May
2019
Research Results
Determining Bond-Slip Characteristics of Prestressing Tendons with Varying Geometries in Two Concrete Mixtures
Author
          Federal Railroad Administration

Subject
                    Tracks & Structures

**Keywords:** Track, ties, concrete, bond-slip, prestressing tendons
**Abstract:** Untensioned pullout tests were conducted to obtain the bond-slip characteristics of two groups of prestressing tendons used in concrete railroad tie production. The purpose of...
Report Number
              RR 19-13

  Office
              RDI-21
    19
Apr
2019
Research Results
Impact of Water on Cracked Concrete Crosstie Service Life
Author
          Federal Railroad Administration

Subject
                    Tracks & Structures

**Keywords:** Concrete crossties, water damage, center cracks, cyclic loading
**Abstract:** To investigate the impact of moisture on crack growth and other tie damage, UIUC researchers subjected pretensioned concrete crossties and small-scale beams to repeated loading...
Report Number
              DOT/FRA/ORD-19/11

  Office
              RDI-21
    29
Sep
2017
Technical Reports
A Survey of Wheel/Rail Friction
Author
          Federal Railroad Administration

Subject
                    Track,
                    Tracks & Structures,
                    Track/Train Interactions

**Keywords:** Friction, friction management, lubrication, vehicle-track interaction, wheel-rail interaction v
**Abstract:** Friction has a huge influence on the vehicle/track interaction and yet it remains poorly understood, its consideration an afterthought in many simulation activities. This survey...
Report Number
              DOT/FRA/ORD-17/21

  Office
              RDI-21
    3
Feb
2017
Accident Investigations
HQ-2017-1184 (Finalized)

Subject
                    Accident Investigations,
                    Tracks & Structures

**Keywords:** Accident Investigations, Union Pacific
**Abstract:** On February 3, 2017, at approximately 8:55 p.m., CST, southbound Union Pacific Railroad (UP) Coal Train CWTCL9-01, with 2 lead locomotives, 2 distributed power locomotives at the...
Accident Date
              February 3, 2017

  Accident Type
              Derailment (DRM)

  Railroad Name
              Union Pacific Railroad Company (UP)

  Location
              Hearne, TXUnited States

  Accident Number
              HQ-2017-1184

  Investigation Status
              Finalized
    27
Jan
2017
Presentations
2016 FRA Rail Program Delivery: FRA Methods and Approaches in Environmental Analysis and Critical NEPA Procedures

Subject
                    Tracks & Structures,
                    Grants & Financial Assistance

**Keywords:** NEPA Procedures
**Abstract:** The Federal Railroad Administration hosted the third FRA Rail Program Delivery Meeting—a 2.5-day conference for grantees, railroad representatives, federal oversight contractors,...
Presenter
              Jamie Maughan, Travis Mast

  Audience
              FRA HQ

  Location
              Washington, DCUnited States

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