A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance Evaluation of Bridge Deck Protection Systems. Volume II
One of the most serious and costly problems presently facing highway agencies in many parts of the country is premature deterioration of concrete bridge decks. The major cause has now been linked to deicing chemical 'chloride' induced corrosion of the reinforcement. In some cases, bridge decks designed to last 40 years have required major repairs after only 10 years of service due to corrosion related 'chuckholing' or spalling. The Minnesota Department of Transportation has become increasingly aware of this problem during the last six years and has initiated a comprehensive program to resolve it. The two basic approaches being used to try and solve the problem are keep the salt and moisture out of the decks with protective overlays and membranes, modified concretes or sealers, and protect the steel from corrosion once the concrete's protective nature has been destroyed by chloride contamination, using epoxy coated and galvanized rebars. Bridge decks were constructed or reconstructed using protective membranes, modified concretes and coated bars. Testing and evaluation of field performance consists of visual observations, delamination detection, chloride content determinations, checking depth of concrete cover over rebars and electrical potential measurements.
Performance Evaluation of Bridge Deck Protection Systems. Volume II
One of the most serious and costly problems presently facing highway agencies in many parts of the country is premature deterioration of concrete bridge decks. The major cause has now been linked to deicing chemical 'chloride' induced corrosion of the reinforcement. In some cases, bridge decks designed to last 40 years have required major repairs after only 10 years of service due to corrosion related 'chuckholing' or spalling. The Minnesota Department of Transportation has become increasingly aware of this problem during the last six years and has initiated a comprehensive program to resolve it. The two basic approaches being used to try and solve the problem are keep the salt and moisture out of the decks with protective overlays and membranes, modified concretes or sealers, and protect the steel from corrosion once the concrete's protective nature has been destroyed by chloride contamination, using epoxy coated and galvanized rebars. Bridge decks were constructed or reconstructed using protective membranes, modified concretes and coated bars. Testing and evaluation of field performance consists of visual observations, delamination detection, chloride content determinations, checking depth of concrete cover over rebars and electrical potential measurements.
Performance Evaluation of Bridge Deck Protection Systems. Volume II
R. G. Tracy (author)
1977
76 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Corrosion & Corrosion Inhibition , Bridge decks , Corrosion prevention , Protective coatings , Coverings , Concrete pavements , Reinforcing steels , Zinc coatings , Deicers , Chlorides , Spalling , Bitumens , Waterproof coatings , Epoxy coatings , Electric potential , Performance evaluation , Pavement overlays
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