Akademik Veri Yönetim Sistemi
13th International İstanbul Scientific Research Congress on Life, Engineering, and Applied Sciences, İstanbul, Türkiye, 21 - 23 Ocak 2023, cilt.1, ss.58-66
One of the reasons that reduce the
durability of reinforced concrete structures is corrosion. Although various
methods are applied to prevent reinforcement corrosion, the most interesting
are inhibitors. Inhibitors are of interest in preventing corrosion due to both
their economically and ease of use in practice. The most widely used of these
was the calcium nitrite-containing inhibitor. However, it is possible for the
reinforced concrete structure using CN inhibitor to meet with different
environmental effects. One of them is the effect that may occur against sulfate
ions. The effect of the mortar structure using CN inhibitor against sulfate
attack was investigated in this study. Without reinforcement, only the effect
of durability on the mortar structure was investigated. In this study, an
inorganic calcium nitrite (CN)-containing inhibitor added to the mortar during
production was used. CN ratio was used between 1% and 2% of cement weight. In
addition, control samples without inhibitor were produced. In all samples, the
water/cement ratio (0.50) was taken. 0-4 mm limestone crushed sand was used.
The samples were kept in 5% MgSO4 solution containing sulfate ions for 7, 28,
90 and 180 days in accordance with ASTM C 1012. Ultrasonic pulse velocity test,
unit weight, compressive and flexure strength tests were applied on the samples
exposed to sulfate effect. When the test results were examined, 0.5% strength
loss was observed at the 180th day in the use of 1% CN inhibitor. FE-SEM
microstructure examinations were performed on the samples exposed to the
sulfate effect.