Work Item
ASTM WK96409
Revision of C204-25 Standard Test Methods for Fineness of Hydraulic Cement by Air-Permeability Apparatus
Rationale
Standard C1222 requires a six month check of the Blaine apparatus with a reference standard. This is currently a note recommendation in C204. This ballot is to add this requirement into C204 to provide direction on how this check should take place. This was balloted several years ago and received a negative regarding the precision limit. The new ballot will re-state the precision value from Section 9 to be used in the check.
Work Item Status
Date Initiated: 09-19-2025
Technical Contact: Megan Karr
Item: 000
Ballot:
Status: