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This report summarizes the development of an un-tensioned pullout test to quantify the bond quality of prestressing wires used in the manufacture of pretensioned concrete railroad ties. Bond quality will vary considerably based on the characteristics of the wire indents. This research...
This report highlights research conducted to determine the remaining (residual) prestress force in prestressed concrete ties that had performed well in track and were subsequently removed after 25 years of service. The team developed a new, direct tension test method to experimentally determine...
The Northeast Corridor Joint Procurement Study, as required by Section 11312(b) of the FAST Act (P.L. 114-94), which directed the Secretary of Transportation to complete, in cooperation with the Northeast Corridor Commission, Amtrak, and commuter rail transportation authorities on the...