چكيده لاتين :
This paper presents a detailed experimental investigation on the acid resistance of ternary blended concrete immersed up to 32 weeks in sulfuric acid (H2SO4) and hydrochloric acid (HC1) solutions. The results are compared with those of the control and binary blended
concrete. ASTM class F fly ash was considered to develop the binary blended concrete at the replacement level of cement as 20% by weight. Then silica fume was considered to develop the ternary blended concrete and the replacement of cement in the ternary system
by silica fume was suggested as 8% of total powder content by weight. The variable factors considered in this study were concrete grades (1י120, M30 and M40) and curing periods (28 days and 90 days) of the concrete specimens. The parameter investigated was the time in
days taken to cause 10% mass loss and strength deterioration factor of fully immersed concrete specimen in a 5% H2SO4 and 5% Hel solutions. The investigation indicated that the ternary blended concrete prepared by 20% fly ash and 8% silica fume performed better acid resistance than the ordinary plain concrete and binary blended concrete.
