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5
Apr
2019
Research Results
Rail Integrity and Initial Performance Testing at the Mega Site
Subject
Track
Keywords: Rail, rolling contact fatigue, RCF, wear, friction control, grinding, mega site
Abstract: The Federal Railroad Administration (FRA) with the Association of American Railroads (AAR) co-sponsored rail integrity and performance testing as part of the joint Heavy-Axle-Load...
Report Number
RR 19-08
Office
RDI-21
5
Apr
2019
Research Results
Settlement of Fine-Contaminated Ballast
Subject
Track
Keywords: Ballast, fines, drainage, mud pumping, settlement
Abstract: In 2017, the Federal Railroad Administration (FRA) and Transportation Technology Center, Inc. (TTCI) constructed and performed ongoing initial tests on a “Rainy Section” of track...
Report Number
RR 19-09
Office
RDI-21
18
Mar
2019
Research Results
A Wire Indent Profiling System for the Assessment of Crosstie Bond and Splitting Propensity
Subject
Track
Keywords: infrastructure, railroad ties, indented wire geometry, transfer length, cracking and splitting, prestressed concrete, high-speed rail
Abstract: This report highlights the development and testing of an automated, high-resolution, non-contact wire indent profile measurement system designed to measure geometric parameters of...
Report Number
RR 19-06
Office
RDI-21
12
Feb
2019
Research Results
Thermite Head-Defect Repair Welds at the Eastern Mega Site
Subject
Track
Keywords: Rail, weld, thermite, railhead repair, rail welding, revenue service
Abstract: From October 2013 to March 2017, thermite head-defect repair test welds from two different suppliers were installed at the eastern mega site near Princeton, WV, on mainline...
Report Number
RR 19-02
Office
RDI-21
6
Feb
2019
Research Results
Drainage Properties of Fine Contaminated Ballast
Subject
Track
Keywords: Ballast, fines, drainage, mud pumping, track
Abstract: In 2017, the Federal Railroad Administration (FRA) and Transportation Technology Center, Inc. (TTCI) completed the initial phase of testing on a “Rainy Section” in the High...
Report Number
RR 19-01
Office
RDI-21