Title:
An Unusual Case of Surface Deterioration on a Concrete Bridge Deck
Author(s):
John Ryell
Publication:
Journal Proceedings
Volume:
62
Issue:
4
Appears on pages(s):
421-442
Keywords:
Admixture, bleeding, bridge deck, curing, durability, flaking, pavement, research, set-retarding admixture.
DOI:
10.14359/7702
Date:
4/1/1965
Abstract:
Set retarded concrete placed in a bridge deck and finished with conventional equipment exhibited a severe surface deterioration in the form of flaking several days after poving. Similar concrete placed in the approach slab on a granular subgrade did not flake. laboratory and field investigations showed that the flaking was due to the formation of a weak plane immediately below the surface of the concrete and was closely con-nected with the bleeding characteristics of the mix. The solution was found in reducing the bleeding rate of the concrete by a change in the type of set retarding admixture.