Rationale

In many regions, the availability of ASTM C150 - Type I Cement is not available and only ASTM C595 - IL Cements are being manufactured. Due to the lack of availability for C150 - Type I Cements, a potential revision to ASTM C1260 is needed to allow for the new cements. Before making the change, a new ILS is needed to verify the implication of the changes in cement.