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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
    5
Mar
2019
Technical Reports
Data Analysis for Maintenance-of-Way Worker Fatigue
Author
          Federal Railroad Administration

Subject
                    Fatigue Management

**Keywords:** Fatigue, work schedule, maintenance-of-way, sleep pattern, alertness, shiftwork, hours of service, biomathematical fatigue model

Report Number
              DOT/FRA/ORD-19/02

  Office
              RDI-24
    2
May
2018
Accident Investigations
HQ-2018-1266 (Finalized)

Subject
                    Accident Investigations,
                    Fatigue Management,
                    Human Factors,
                    Switching Operations

**Keywords:** derailment; BNSF Railway Company; Saginaw, TX; human factors
**Abstract:** At approximately 1:30 a.m., CDT, BNSF Railway (BNSF) derailed 18 railcars in the Saginaw, Texas Yard, at Milepost (MP) 351.4 on the Ft. Worth Subdivision. The switch crew handling...
Accident Date
              May 2, 2018

  Accident Type
              Derailment (DRM)

  Railroad Name
              BNSF Railway Company

  Location
              Saginaw, TXUnited States

  Accident Number
              HQ-2018-1266

  Investigation Status
              Finalized
    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

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