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CALÇADA, Luciana Maltez Lengler et al. Evaluation of the effectiveness of ASTM C 1202 in measuring the concrete's ability to resist chloride ion penetration. In: INTERNATIONAL CONFERENCE ON HIGH-PERFORMANCE CONCRETE, PERFORMANCE AND QUALITY OF CONCRETE STRUCTURES, 3., 2002, Recife. Anais… Recife, 2002.
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Abstract

The present work aimed to evaluate some parameters related to ASTM C1202 – Standard test method for electrical indication of concrete’s ability to resist chloride ion penetration (1). Specimens from several different concrete mixtures, some of them containing mineral additions, were produced. After curing, the specimens were tested according to ASTM C1202 (1) procedure. Both the passing current and temperature increase during the test were recorded. After the test, that lasted 6 hours, the equipment was switched off until the ambient temperature was reached. Then, the standard difference of potential (60 V) was applied again and the correspondent passing current recorded. However, the expected higher passing current value than that measured at the beginning of the test, didn’t occur. The passant current recorded was practically the same as that measured at the beginning of the previous test. Moreover, good correlations between both initial current versus passing charge at the end of test and passing current versus temperature were found, leading to the conclusion that ASTM test is not actually measuring the concrete’s ability to resist chloride ion penetration. Using the test data obtained by other researchers, good correlations between the same parameters were found.
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