The primary objective of this project is to determine, via field tests, the long term effectiveness of several products or procedures in protecting concrete surfaces against the intrusion of chloride ions. Five separate structural elements (pier columns), constructed under identical construction standards and subject to very similar exposure conditions in both the past and future, were selected as a candidate site. Each of four structural elements were coated with a separate protective system. The fifth was untreated for control comparison. Prior to the application of protective systems, two inch diameter core samples were obtained from each pier column. These core samples were tested to establish chloride content level for comparison with later samples.
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