December 1-2, 2020 held at the Associated Builders and Contractors (ABC) Building, Pearl, MS This class covers laboratory testing of hardened concrete. ACI Concrete Strength Testing Technician certification covers the following standard test methods: ASTM C617 Capping Cylindrical Specimens ASTM C1231 Unbonded Caps for Concrete Cylinders ASTM C39 Compressive Strength of Cylindrical Concrete Specimens ASTM