Research Report RR:C09-1049
An Interlaboratory Study was conducted to establish a precision statement for Test Method C231/C231M, Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method. The current test method contains precision information for the Type A meter only. This study was conducted to establish precision information using the Type B meter and this report outlines details of the work that was performed, participants involved, and results obtained during the study.
Committee C09 on Concrete and Concrete Aggregates
Subcommittee C09.60 on Testing Fresh Concrete