Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Salt Penetration and Corrosion in Prestressed Concrete Members
A study was made of the condition of prestressed concrete (PS/C) bridge elements located in adverse, potentially corrosive environments. A total of five bridges were subjected to detailed surveys. Additional structures were surveyed visually and given limited investigation. Bridges were located both in northern climates subjected to application of roadway deicing salts and in southern areas subjected to marine spray. Results indicated that, in northern areas, primary cause of deterioration of PS/C members is due to penetration of solutions containing deicing salts through concrete cover and through anchorage zones. Improperly designed and maintained joints and drainage systems are the primary pathways for the salt ingress. In southern areas primary cause of deterioration is marine salts sprayed directly onto substructural elements by wave action. Recommendations concerning procedures, parameters and threshold values for detection of corrosive environments and assessing the condition of prestressing steel in bridge components are included.
Salt Penetration and Corrosion in Prestressed Concrete Members
A study was made of the condition of prestressed concrete (PS/C) bridge elements located in adverse, potentially corrosive environments. A total of five bridges were subjected to detailed surveys. Additional structures were surveyed visually and given limited investigation. Bridges were located both in northern climates subjected to application of roadway deicing salts and in southern areas subjected to marine spray. Results indicated that, in northern areas, primary cause of deterioration of PS/C members is due to penetration of solutions containing deicing salts through concrete cover and through anchorage zones. Improperly designed and maintained joints and drainage systems are the primary pathways for the salt ingress. In southern areas primary cause of deterioration is marine salts sprayed directly onto substructural elements by wave action. Recommendations concerning procedures, parameters and threshold values for detection of corrosive environments and assessing the condition of prestressing steel in bridge components are included.
Salt Penetration and Corrosion in Prestressed Concrete Members
V. Novokshchenov (Autor:in)
1989
215 pages
Report
Keine Angabe
Englisch
Highway Engineering , Construction Equipment, Materials, & Supplies , Materials Degradation & Fouling , Corrosion & Corrosion Inhibition , Bridges(Structures) , Prestressed concrete , Corrosion environments , Deterioration , Stress corrosion , Pitting , Prestressing steels , Failure(Materials) , Cracking(Fracturing) , Corrosion prevention , Structural analysis
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