Characterizing the Behavior of a Machine-Placed UHPC Bridge Deck Overlay

Project Details
STATE

IA

SOURCE

RIP

START DATE

04/01/18

END DATE

06/30/20

RESEARCHERS

Goetz, Vanessa; Sritharan, Sri

SPONSORS

Iowa Highway Research Board; Iowa Department of Transportation

KEYWORDS

Bridge decks; Durability; Overlays (Pavements); Pavement design; Thickness; Ultra high performance concrete

Project description

Bridge deck deterioration is a frequent problem faced by many states in the U.S., especially the Midwest and Northern states where deicing is used and Coastal states. Maintenance and repair associated with bridge decks can cost 50 to 80% of all bridge related expenditures, which is conservatively estimated to be more than $5B per year (Gucunski et al. 2011). With its superior durability properties, the use of ultra-high performance concrete with fiber reinforcement (UHPC) in bridge deck has been explored in Iowa as a means to combat wide-ranging bridge deck deterioration problems. Given that solid UHPC slab deck is prohibitively expensive, use of a waffle deck was successfully demonstrated.
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