International Code Council Board of Directors Sunsets Standard for Low-Carbon Alternative Cements Used in Concrete

During its meeting on April 18, 2026, the International Code Council (ICC) Board of Directors resolved to sunset the ICC 1155 Standard for Low-Carbon Alternative Cements Used in Concrete (IS-LCCC) and IS-LCCC Committee. This action was responsive to ICC staff’s evaluation of the original intent of the ICC 1155 performance standard and corresponding recommendation that the IS-LCCC’s Committee’s work is better aligned with the expertise of other standards developing organizations such as the American Concrete Institute (ACI).  

 The ANSI PINS withdrawal will be included in the ANSI Standards Action dated May 1, 2026. 

The ICC 1155 performance standard was intended to assess low-carbon alternative cement properties based on ICC-ES Acceptance Criteria for Low Carbon Alternative Cements for Use in Concrete (AC529). The need for this standard derived from the cement industry being responsible for approximately 8% of the CO2 emissions around the world.  

With increased attention on the effects of global CO2 productions, there is a need for low carbon alternative cement that has the proper physical properties in accordance with model building codes and the referenced standards within. ACI and other standards developing organizations have committed to continuing to monitor this issue.  

More information on the ICC 1155 can be found here.