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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
    8
Jan
2015
Technical Reports
Identity Management for Interoperable PTC Systems in Bandwidth-Limited Environments (Part 1)
Author
          Howard & George Mason University

Subject
                    Positive Train Control,
                    Grants & Financial Assistance

**Keywords:** PTC Railroad Safety Technology Grant
**Abstract:** Positive Train Control is a wireless based system designed to provide comprehensive safety coverage for passenger and cargo trains operating on US railroads by 2015. Mandated by...
Report Number
              FR-TEC-0006-11-01-00

  Office
              RRS-13.5
    8
Jan
2015
Technical Reports
Identity Management for Interoperable PTC Systems in Bandwidth-Limited Environments (Part 2)
Author
          Howard & George Mason University

Subject
                    Positive Train Control,
                    Grants & Financial Assistance

**Keywords:** PTC Railroad Safety Technology Grant
**Abstract:** Technical Report- REDACTED
Report Number
              FR-TEC-0006-11-01-00

  Office
              RRS-13.5

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