CRMCA presents the Online Concrete Procedures for preparing for ACI certifications.

C231/C231M—Air Content of Freshly Mixed Concrete by the Pressure Method

To skip to after filling of the pot at 4:27, click here:    • Video  

**Updated for 2022**


CRMCA website: https://www.crmca.org/
CRMCA Registration for ACI: https://www.crmca.org/americanconcre...

ACI website: https://www.concrete.org/
ASTM website: https://www.astm.org/