ASTM C31/C31M requires the performance of air content testing for specimens fabricated in the field. This is irrespective of whether the mixture is air entrained. It is important that a baseline air content for comparison be established during the mixture design process. Therefore, It is proposed to remove “when required” from section 8.2.2, so that air content testing is performed for all mixtures during the design process.
Date Initiated: 12-05-2023
Technical Contact: Michael Kesselmayer
Item: 000
Ballot:
Status: