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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: In Situ Measurement of the Permeability of Concrete to Chloride Ions
Author(s): D. Whiting
Publication: Special Publication
Appears on pages(s): 501-524
Keywords: (plastic); measurement; nondestructive tests; permeability;
chlorides- electronic instruments; latex
polymer concretes; resurfacing.
Abstract:An electronic device and test procedure which can be used to rapidly assess the permeability of various types of concrete to chloride ions is described. The method consists of monitoring the amount of electrical current passed through a test area on a concrete slab when a potential difference of 80 Vdc is maintained across the specimen for a period of six hours. Chloride ions are forced to migrate out of a sodium chloride solution subjected to a negative charge through the concrete towards reinforcing steel maintained at a positive potential. Development of a prototype device and testing on small scale laboratory slabs of ordinary portland cement concrete, latex modified concrete, internally sealed concrete, dense (‘@Iowa) concrete, polymer impregnated, and polymer concrete are des-In addition, field trials carried out on a conventional concrete deck and a deck overlaid with dense Iowa) concrete are discussed. The method has been found to give a good correlation with long-~ term ponding data on companion concrete slabs. It can be used as a quality control tool for new construction or as a means of 6 monitoring permeability of structures currently in-service.
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