We are balloting to revise 12.1 Precision, to reflect the fact that we have no data to support a precision statement for the estimate of optimum sulfate. This lack was addressed by a round robin conducted under ILS #0032, but unfortunately it failed to give usable data. The analysis indicating this failure has been filed at ASTM headquarters. This revision alerts the user to the situation. Developing a new round-robin will be an item of new business at the next subcommittee meeting.
blended hydraulic cement; calcium sulfate; cement; compressive strength; gypsum; hydraulic cement; optimum sulfate content (of cement); portland cement; strength (of cement); sulfate content (of cement);
Citing ASTM Standards
[Back to Top]