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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
    24
Jul
2014
Research Results
UIUC Concrete Tie and Fastener Field Testing at TTC
Author
          Cameron Stuart

Subject
                    Track,
                    Track/Train Interactions,
                    Tracks & Structures

**Keywords:** Concrete crossties, elastic fastening systems, field instrumentation, concrete sleepers, loading conditions, displacements

Report Number
              RR 14-23

  Office
              RDI-21
    24
Jul
2014
Research Results
Ground Penetrating Radar Evaluation and Implementation
Author
          Hugh B. Thompson II and Gary Carr

Subject
                    Track,
                    Track/Train Interactions,
                    Tracks & Structures

**Keywords:** GPR, ground penetrating radar, ballast, subballast, substructure, fouled ballast, ballast moisture

Report Number
              RR 14-24

  Office
              RDI-21
    13
Jun
2014
Research Results
Part 1: Heavy Axle Load Revenue Service Mega Site Testing 2005–2012
Author
          Luis Maal and Gary Carr

Subject
                    Heavy Axle Load (HAL),
                    Track,
                    Track/Train Interactions,
                    Tracks & Structures

**Keywords:** Heavy axle load, track infrastructure, mega sites

Report Number
              RR 14-13

  Office
              RDI-21

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