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Sampling and Testing for Chloride Ion in Concrete

K. C. Clear / E. T. Harrigan

One of the most severe problems facing the highway community is chloride ion-induced reinforcing steel corrosion and the subsequent deterioration of concrete bridge decks and marine structures. This report presents recommended methods for sampling and testing for both total and water-soluble chloride ion in hardened concrete. The methods are updated and expanded revisions of the earlier procedure developed by FHWA. Alternate procedures for sampling the hardened concrete with either a core drill or a rotary impact drill are included. In addition, two alternate methods of chemical analysis are presented, the original potentiometric titration method and a significantly more rapid method employing the Gran endpoint determination procedure. Both are compatible with either chloride or silver ion-selective electrodes.

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Sampling and Testing for Chloride Ion in Concrete

K. C. Clear / E. T. Harrigan

One of the most severe problems facing the highway community is chloride ion-induced reinforcing steel corrosion and the subsequent deterioration of concrete bridge decks and marine structures. This report presents recommended methods for sampling and testing for both total and water-soluble chloride ion in hardened concrete. The methods are updated and expanded revisions of the earlier procedure developed by FHWA. Alternate procedures for sampling the hardened concrete with either a core drill or a rotary impact drill are included. In addition, two alternate methods of chemical analysis are presented, the original potentiometric titration method and a significantly more rapid method employing the Gran endpoint determination procedure. Both are compatible with either chloride or silver ion-selective electrodes.

Sampling and Testing for Chloride Ion in Concrete

K. C. Clear / E. T. Harrigan

One of the most severe problems facing the highway community is chloride ion-induced reinforcing steel corrosion and the subsequent deterioration of concrete bridge decks and marine structures. This report presents recommended methods for sampling and testing for both total and water-soluble chloride ion in hardened concrete. The methods are updated and expanded revisions of the earlier procedure developed by FHWA. Alternate procedures for sampling the hardened concrete with either a core drill or a rotary impact drill are included. In addition, two alternate methods of chemical analysis are presented, the original potentiometric titration method and a significantly more rapid method employing the Gran endpoint determination procedure. Both are compatible with either chloride or silver ion-selective electrodes.

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Title:

Sampling and Testing for Chloride Ion in Concrete

Contributors:

K. C. Clear (author) / E. T. Harrigan (author)

Publication date:

1977

Size:

26 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Construction Equipment, Materials, & Supplies , Highway Engineering , Analytical Chemistry , Portland cements , Concretes , Bridge decks , Chlorides , Chemical analysis , Sampling , Volumetric analysis , Experimental design , Corrosion , Deicers , Marine atmospheres

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