March 3-4, 2020 held at ABC of MS in Pearl, MS This class covers field testing of fresh concrete. ACI Concrete Field Testing Technician, Grade 1 certification covers the following standard test methods: ASTM C172 Sampling ASTM C143 Slump ASTM C138 Unit Weight ASTM C173 Air Content Volumetric Method ASTM C231 Air Content Pressure Method