Concrete Air Test - ASTM C231 Pressure Method

Overview of ASTM C231 - Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method. This is a test required to pass the American Concrete Institute (ACI) Field Technician Certification Program -- "Concrete Field Testing Technician—Grade I." A Concrete Field Testing Technician—Grade I is an individual who has demonstrated the knowledge and ability to properly perform and record the results of seven basic field tests on freshly mixed concrete. The program req

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