Replacing Timber Decks on Railroad Bridges With Prestressed Concrete Slabs

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Title: Replacing Timber Decks on Railroad Bridges With Prestressed Concrete Slabs

Author(s): W.R. Hyma

Publication: Concrete International

Volume: 1

Issue: 5

Appears on pages(s): 18-21

Keywords: bonding; bridge decks; composite con- struction (concrete and steel); concrete slabs; epoxy resins; precast concrete; prestressed concrete; rail-road bridges; renovating; wood.

Date: 5/1/1979

Abstract:
Thirty-two miles of bridges owned by a major railroad are steel-deck girder spans with timber-ballasted decks. The Atchinson, Topeka and Santa Fe is im-mersed in a program of replacing 50- to 60-year-old timber decks with precast-prestressed concrete slabs which are bonded to the steel with an epoxy grout. Transverse joints between slabs also are epoxy-grouted. The result: a monolithic, watertight deck which protects the steel and should greatly extend the painting cycle.