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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
    25
Mar
2019
Other Reports
SOFA Switching Fatality and Severe Injury Update 4th Quarter 2018
Author
          SOFA WG

Subject
                    Switching Operations

**Keywords:** SOFA
**Abstract:** Switching Operations Fatality Analysis (SOFA)
• A voluntary, non-regulatory, railroad-safety partnership of representatives from AAR, ASLRRA, BLET, FRA, and
UTU-SMART-TD
• Seeks...
Office
              RRS-24
    4
Jan
2019
Other Reports
SOFA Switching Fatality and Severe Injury Update 3rd Quarter 2018
Author
          SOFA WG

Subject
                    Switching Operations

**Keywords:** SOFA

Office
              RRS-24
    3
Jan
2019
Other Reports
SOFA Switching Fatality and Severe Injury Update 2nd Quarter 2018
Author
          SOFA WG

Subject
                    Switching Operations

**Keywords:** SOFA

Office
              RRS-24

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