Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polk-Quincy Viaduct I-70, Topeka, Kansas Concrete Box Girder Condition Survey
The Polk-Quincy Viaduct was constructed in 1963. A two inch concrete bridge deck overlay was applied in 1981. In 1989 a petromat membrane with a 1.5 inch BM-1B asphalt concrete overlay was applied. In early 1991 a review of the condition of the viaduct was requested by the KDOT management. The report is a summary of the findings of the KDOT Research Unit. Standard sampling equipment was mechanically altered to allow the KDOT technicians to acquire the samples from the bottom of the box girder section of the structure. Samples were taken using a scissor lift to allow access to the bottom of the structure, air was supplied to the coring equipment rather than water for cooling of the core barrel and clearing of cuttings. Copper, copper sulfate half cells were used to determine corrosion potentials. The Research Unit determined that the deck has a considerable amount of deterioration in the form of delaminations and excessively high chloride contents. The bottom of the box girders however have little or no deterioration.
Polk-Quincy Viaduct I-70, Topeka, Kansas Concrete Box Girder Condition Survey
The Polk-Quincy Viaduct was constructed in 1963. A two inch concrete bridge deck overlay was applied in 1981. In 1989 a petromat membrane with a 1.5 inch BM-1B asphalt concrete overlay was applied. In early 1991 a review of the condition of the viaduct was requested by the KDOT management. The report is a summary of the findings of the KDOT Research Unit. Standard sampling equipment was mechanically altered to allow the KDOT technicians to acquire the samples from the bottom of the box girder section of the structure. Samples were taken using a scissor lift to allow access to the bottom of the structure, air was supplied to the coring equipment rather than water for cooling of the core barrel and clearing of cuttings. Copper, copper sulfate half cells were used to determine corrosion potentials. The Research Unit determined that the deck has a considerable amount of deterioration in the form of delaminations and excessively high chloride contents. The bottom of the box girders however have little or no deterioration.
Polk-Quincy Viaduct I-70, Topeka, Kansas Concrete Box Girder Condition Survey
D. Meggers (Autor:in) / K. Hurst (Autor:in) / D. Scherschligt (Autor:in)
1991
30 pages
Report
Keine Angabe
Englisch
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