Ten peer-reviewed papers focus on new techniques for characterizing and predicting the performance of concrete subjected to freezing-thawing (F-T) cycles. This special issue highlights recent advances in concrete F-T durability.

Topics cover:
• New technologies and test methods for characterizing air voids in fresh cement paste and hardened concrete
• State-of-the art information on F-T durability of special concrete, such as lightweight concrete, engineered cementitious composites, and pervious concrete
• Effects of void parameters on concrete F-T resistance
• New test method for determining air entraining agent demand of a concrete mixture
• Guidance for interpreting F-T test results of field concrete and for reconciling laboratory-based specifications with field experience.

This new ASTM publication will facilitate significant improvements in concrete void characterization, F-T durability evaluation, and test specifications.