Methods for Removing Concrete Decks from Bridge Girders, TR-647, 2014

(2014) Methods for Removing Concrete Decks from Bridge Girders, TR-647, 2014. Transportation, Department of

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Abstract

With ever tightening budgets and limitations of demolition equipment, states are looking for cost-effective, reliable, and sustainable methods for removing concrete decks from bridges. The goal of this research was to explore such methods. The research team conducted qualitative studies through a literature review, interviews, surveys, and workshops and performed small-scale trials and push-out tests (shear strength evaluations). Interviews with bridge owners and contractors indicated that concrete deck replacement was more economical than replacing an entire superstructure under the assumption that the salvaged superstructure has adequate remaining service life and capacity. Surveys and workshops provided insight into advantages and disadvantages of deck removal methods, information that was used to guide testing. Small-scale trials explored three promising deck removal methods: hydrodemolition, chemical splitting, and peeling

Item Type: Departmental Report
Keywords: Bridge decks, Bridges, Concrete, Girders, Girder bridges, Steel bridges, TR-647
Subjects: Transportation
Transportation > Materials
Transportation > Bridges and tunnels
Transportation > Research
Transportation > Equipment
Transportation > Maintenance and preservation
ID Code: 17908
Deposited By: Leighton Christiansen
Deposited On: 03 Nov 2014 21:17
Last Modified: 03 Nov 2014 21:17
URI: http://publications.iowa.gov/id/eprint/17908