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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
    20
Jun
2016
Technical Reports
Installation of Active Noise Control and Active Vibration Control on a GP40-2 Locomotive
Author
          Federal Railroad Administration

Subject
                    Operating Practices

**Keywords:** active noise control, active vibration control, static operation, on-track operation
**Abstract:** This project evaluated the performance of active noise control (ANC) and active vibration control (AVC) technologies using a GP40-2 locomotive located at the Transportation...
Report Number
              DOT/FRA/ORD-16/20

  Office
              RDI-22
    17
Jun
2016
Technical Reports
Improved Quality Truck Castings
Author
          Federal Railroad Administration

Subject
                    Operating Practices

**Keywords:** Bolster, side frame, truck, casting, foundry
**Abstract:** A review of the car repair billing database shows that many bolsters and side frames are removed from service each year due to cracking or breaking. Derailment-related costs due...
Report Number
              DOT/FRA/ORD-16/18

  Office
              RDI-22

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