ACI Lab Level 2 - ASTM C157 Length Change of Concrete (Shrinkage) - CRMCA Online Concrete Procedures 

**Still valid in 2024**
CRMCA presents the Online Concrete Procedures for preparing for ACI certifications.
ASTM C157 / C157M - Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
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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/
ACI Reference for Modifications to C157 (2018): • Modification to ASTM C...