Work Item
ASTM WK90276

Revision of C91/C91M-23 Standard Specification for Masonry Cement

Rationale

ASTM C1891 - Standard Test Method for Fineness of Hydraulic Cement by Air Jet Sieving at 45um is currently used for C150 and C595 cements as an alternate test method to ASTM C430 and is also currently an accepted industry practice in the production of Cements for Masonry. The proposal is to permit the use of ASTM C1891 in ASTM C91 as an alternative test method to C430.

Details

Developed by Subcommittee: C01.11

Committee: C01

Staff Manager: W Scott Orthey

Work Item Status

Date Initiated: 04-11-2024

Technical Contact: April Innes