ASTM C138 Standard Test Method for Density (Unit Weight), Yield, and Air Content of Concrete

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  • เผยแพร่เมื่อ 23 พ.ย. 2024
  • Overview of ASTM C138 - Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete.
    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 requires a working knowledge of the following ASTM test methods and practices:
    ● C1064/C1064M - Temperature of Freshly Mixed Hydraulic-Cement Concrete
    ● C172 - Sampling Freshly Mixed Concrete
    ● C143/C143M - Slump of Hydraulic-Cement Concrete
    ● C138/C138M - Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete
    ● C231 - Air Content of Freshly Mixed Concrete by the Pressure Method
    ● C173/C173M - Air Content of Freshly Mixed Concrete by the Volumetric Method

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