Physical Aspects of Sodium Sulfate Attack on Concrete
Thomas J. Reading
Appears on pages(s):
aggregates; alkali aggregate reactions; calcium
carbonates; cements; concrete cores; concrete dams; concrete
durability; deterioration; ettringite; gypsum; pozzolans; salts;
sodium sulfate; sulfate attack; tests. ----
Evidence is presented to show that sodium sulfate attack on concrete has physical, as well as chemical aspects. This has been shown in the laboratory and in studies of field structures, Including ft. Peck Dam. Inspection, coring, and testing of the Ft. Peck concrete after 40 years of severe sulfate exposure are described. Sulfate attack was noted in a fen areas, but the overall condition of the concrete is surprisingly good.