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Cover of Testing and Specifying Chloride Resistance of Concrete
Testing and Specifying Chloride Resistance of Concrete
  • Publication no: ABC-SAS010-11
  • Published: 31 October 2011

A wide range of test methods has been used to measure the resistance of concrete to chloride penetration. Each method is purported to measure the property of concrete central to the chloride transport mechanism into concrete. They include water absorption, water permeability, chloride diffusion, chloride migration and electrochemical resistance. In this paper, an assessment of five commonly specified properties: namely the water-cement ratio, 28-day diffusion coefficient, sorptivity, volume of permeable voids, and ASTM C1202 rapid chloride permeability; was made in terms of its relation to the long-term chloride diffusion coefficient taking into consideration the precision of the test methods. The long-term chloride diffusion coefficient is derived from the chloride penetration profile into concrete after one-year immersion in sodium chloride solution. The results cover a range of concretes commonly used in Australia.