Laboratory experience with the rapid chloride permeability test

Barzin Mobasher, Terry Mitchell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


The new rapid chloride permeability test, in which chloride ions are driven into concrete samples electrically over a 6-hour period, is becoming widely used and has been accepted as an American Association of State and Highway Transportation Officials (AASHTO) standard, T277. This paper summarizes the results of an extensive series of laboratory tests with the new method. Results of an interlaboratory test program provide single operator and multilaboratory coefficients of variation suitable for use in a precision statement in the standard versions of the method. Several possible revisions to the AASHTO standard procedure are examined, but further study is necessary before any can be accepted. Test results on specimens with diameters other than the standard 3.75 in. (95 mm) called for in T277 are found to be easily adjustable to allow comparisons with standard size specimens. Several fundamental properties of concrete, namely water-cement ratio, coarse aggregate type and gradation, and air content, are shown to affect chloride permeability.

Original languageEnglish (US)
Title of host publicationPermeability of Concrete
EditorsDavid Whiting, Arthur Walitt
PublisherAmerican Concrete Institute
Number of pages28
ISBN (Electronic)9780870316067
StatePublished - Aug 1 1988
Externally publishedYes
Event1987 Symposium on Permeability of Concrete - Seattle, United States
Duration: Nov 8 1987Nov 13 1987

Publication series

NameAmerican Concrete Institute, ACI Special Publication
ISSN (Print)0193-2527


Conference1987 Symposium on Permeability of Concrete
Country/TerritoryUnited States


  • Aggregate gradation
  • Air entrainment
  • Chlorides
  • Coarse aggregates
  • Concretes
  • Permeability
  • Tests
  • Water-cement ratio

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science


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