Abstract
Accelerated corrosion tests of reinforcing steel in mortar containing chlorides were conducted using a lithium nitrite corrosion inhibitor focusing on the nitrite–chloride ion molar ratio ( NO 2 - / Cl - ) as a test parameter. Lithium nitrite’s corrosion-inhibiting effect was non-destructively monitored by embedding a corrosion sensor in each specimen. The result of this study came out that the minimum effective dosage of lithium nitrite is 0.6 in terms of NO 2 - / Cl - ; sensor corrosion occurs when the ratio of the measured sensor resistance ( R) to the initial sensor resistance ( R 0) increases from 2 to 4; and the onset time and degree of corrosion in reinforcement bar can be non-destructively monitored by measuring the resistance ( R) using the sensor for the correlation between R/ R 0 and the percentage of the corrosion area ( A cor).
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