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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: Use of Electrical Resistance Probes in Tracing Moisture Permeation Through Concrete
Author(s): Gunars Bracs, Emery Balint, and Dennis F. Orchard
Publication: Journal Proceedings
Appears on pages(s): 642-647
Keywords: compressive strength; concretes; electrical resistance; hardened concretes; moisture;permeability; porosity; research; voids.
Abstract:Describes the development and application of a method, based on measuring electrical resistance, for the tracing of moisture transfer through specimens of concrete. Cured and dried specimens of various concretes were subjected to a small, constant head of water and frequent measurements of electrical resistance were taken between embedded pairs of electrodes. Since the conductivity of moisture reduced the local resistance, advance of the moisture in the specimen could be traced. Results were interpreted with the aid of records of moisture volumes involved in the process of permeation. It was found that the oven-dried specimens were fully permeated within a few days but then, over the total period of I20 days, hard-ening and reduction of permeability occurred. Specimens were classed and concrete quality determined according to these two factors: initial speed of permeation and later reduction of permeability.
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