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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**
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CRMCA website: www.crmca.org/
CRMCA Registration for ACI: www.crmca.org/...
ACI website: www.concrete.org/
ASTM website: www.astm.org/