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Keywords: Ballast behavior, discrete element modeling, DEM, Discrete Element Method, triaxial test, fouling, dynamic train loading, ballast degradation and image analysis
Abstract: An innovative integrated computational-experimental laboratory testing framework has been developed at the University of Illinois at Urbana-Champaign to evaluate clean and fouled...
Keywords: Concrete railroad ties, alkali-silica reaction (ASR), delayed ettringite formation (DEF), impact echo, material analysis, prestressing tendons, degradation mechanisms, petrographic analyses, bursting and splitting forces, transfer strength and length
Abstract: Simpson Gumpertz & Heger Inc. conducted an investigation into the factors that caused widespread failure in prestressed concrete railroad ties on the Northeast Corridor. The...
Keywords: Fiber Optic, Broken Rail, Acoustic, Seismic, Rail Break, Wayside Systems
Abstract: This report describes the activities and presents the results of a feasibility study to examine the viability of using fiber-optic acoustic technologies to detect broken rails in...
Keywords: 49CFR Transportation, international high speed rail standards
Abstract: This report compares international standards with selected parts of Federal Railroad Administration (FRA) Code of Federal Regulation Title 49 CFR Transportation. The parts were...