Practice Test GeeksPractice Test Geeks
← All ACI Certification Flashcard Decks

Field Testing Technician Flashcards

7 cards from real ACI Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Field Testing Technician flashcards as text

  1. Per ASTM C143, the height of the standard slump cone is:

    Answer: 12 inches

    The standard slump cone is 12 inches (305 mm) tall per ASTM C143.

  2. When performing the slump test per ASTM C143, the concrete is placed in the mold in:

    Answer: 3 layers

    ASTM C143 requires filling the cone in 3 equal layers, each rodded 25 times with a tamping rod.

  3. The entire slump test procedure from start of filling the mold to removal of the cone must be completed within:

    Answer: 2 minutes and 30 seconds

    ASTM C143 requires the complete procedure from start of filling to cone removal to be done within 2 minutes and 30 seconds.

  4. The tamping rod specified in ASTM C143 for the slump test is:

    Answer: 5/8 inch diameter, 24 inches long, hemispherical end

    ASTM C143 specifies a 5/8-inch (16 mm) diameter, 24-inch (600 mm) long rod with a rounded hemispherical tip.

  5. Per ASTM C143, the slump measurement is recorded to the nearest:

    Answer: 1/4 inch

    ASTM C143 requires reporting the slump to the nearest 1/4 inch (5 mm).

  6. If concrete produces a shear slump (falls to one side) on the first test attempt per ASTM C143, the technician should:

    Answer: Repeat the test using a new sample from the same batch

    A shear slump on the first attempt requires repeating the test; if it shears again on the second try, the concrete lacks the plasticity needed for a valid slump result.

  7. Per ASTM C1064, a temperature-measuring device must remain immersed in fresh concrete for a minimum of:

    Answer: 2 minutes

    ASTM C1064 requires the thermometer to remain inserted in the concrete for at least 2 minutes before reading the temperature.