Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation of Silica Fume in Bridge Deck Concrete Overlays
Chlorides that are used for ice control on the Kansas highways cause serious corrosion of the reinforcing steel in concrete bridges. The Kansas Department of Transportation (KDOT) has tried various methods to prevent chloride from penetrating the concrete on bridge decks. In 1990 two silica fume bridge deck overlays were placed on I-470 in Shawnee County along side of two control bridges. While the silica fume overlays have successfully inhibited the chloride penetration of the concrete, extensive cracking occurred in the silica fume overlays. Most of the cracking occurred in the first five years of the bridge deck life. KDOT has made significant changes in curing methods since 1990 to control the early cracking in the silica fume overlays.
Evaluation of Silica Fume in Bridge Deck Concrete Overlays
Chlorides that are used for ice control on the Kansas highways cause serious corrosion of the reinforcing steel in concrete bridges. The Kansas Department of Transportation (KDOT) has tried various methods to prevent chloride from penetrating the concrete on bridge decks. In 1990 two silica fume bridge deck overlays were placed on I-470 in Shawnee County along side of two control bridges. While the silica fume overlays have successfully inhibited the chloride penetration of the concrete, extensive cracking occurred in the silica fume overlays. Most of the cracking occurred in the first five years of the bridge deck life. KDOT has made significant changes in curing methods since 1990 to control the early cracking in the silica fume overlays.
Evaluation of Silica Fume in Bridge Deck Concrete Overlays
R. A. Montney (Autor:in) / J. B. Wojakowski (Autor:in)
2007
14 pages
Report
Keine Angabe
Englisch
Highway Engineering , Construction Equipment, Materials, & Supplies , Corrosion & Corrosion Inhibition , Bridge deck overlays , Concrete bridges , Reinforcing steel , Corrosion , Silicon dioxide , Kansas , Curing methods , Concrete durability , Highway construction , Cracking(Fracturing) , Admixtures , Silica fume
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