983
4384.007
Brink, Russell; William E. Grieb and Donald O. Woolf
Paper
Bureau of Public Roads
1968
October
1-25 + tab.,fig
Y
The use of deicing chemicals for the removal of snow and ice from concrete pavements frequently causes scaling of the concrete surface. This deterioration occurs on both road slabs placed on a subgrade and on bridge slabs. The latter is recognized as being the far more serious problem. The Bureau of Public Roads has previously published several reports 1, 2, 3 on the resistance of concrete surfaces to scaling. The results reported therein were based on the performance of test slabs placed on the ground so that freezing would occur in a manner similar to that occurring on a road slab; that is, from the top down, with the ground insulating the bottom surface.In recognition of the more extensive determiration of bridge deck slabs, it was considered advisable also to study the resistance to scaling of concrete surfaces in a simulated bridge deck environment. The findings reported here are based on the performance of slabs mounted on columns so that both the top and bottom surfaces were exposed to the air as in the case of bridge decks.
Series IV tests used some lightweight aggregate. Lightweight concrete made with all LWA or NW and LW coarse aggregates had good resistance to scaling and were equal to or better than concretes with all NW aggregates.