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Set retarded concrete placed in bridge deck and finished with conven tional equipment exhibited severe surface deterioration in form of flaking several days after paving; similar concrete placed in approach slab on granular subgrade did not flake; laboratory and field investigations showed that flaking was caused by formation of weak plane immediately below surface of concrete and was closely connected with bleeding characteristics of mix; solution was found in reducing bleeding rate of concrete by change in type of set retarding admixture.
Set retarded concrete placed in bridge deck and finished with conven tional equipment exhibited severe surface deterioration in form of flaking several days after paving; similar concrete placed in approach slab on granular subgrade did not flake; laboratory and field investigations showed that flaking was caused by formation of weak plane immediately below surface of concrete and was closely connected with bleeding characteristics of mix; solution was found in reducing bleeding rate of concrete by change in type of set retarding admixture.
Unusual case of surface deterioration on concrete bridge deck
Am Concrete Inst -- J
Ryell, J. (author)
1965
22 pages
Article (Journal)
English
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