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ACI CONCRETE FIELD TESTING TECHNICIAN -
GRADE I EXAM NEWEST 2025 ACTUAL EXAM
COMPLETE 150 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+
When raising the slump mold, it should not be rotated or twisted, True or False? - ANSWER-True
How much time is allowed for lifting the slump mold? - ANSWER-5 +- 2 seconds
The measurement for slump is made from the top of the mold to what point of the concrete specimen? - ANSWER-The displaced original center of the top surface of the specimen
The slump of the concrete is measured and reported to the nearest _____. - ANSWER-1/4 in. [5 mm]
How much time is allowed to conduct the slump test from beginning to completion? - ANSWER-2 1/2 minutes
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The diameter of the tamping rod used in the test method is _____. - ANSWER-5/8 in. [16 mm]
What is the required shape of the tamping end of the rod? - ANSWER-Rounded to a hemispherical tip
What is the required minimum frequency of the vibrator used in this test method? - ANSWER-7000 vibrations per minute
The outside diameter or side dimension of the vibrating element must be at least _____ but not greater than _____. - ANSWER- 0.75 in. [19 mm], 1.50 in. [38 mm]
A plastic container can be used for the measure in this method.True or False? - ANSWER-False, measure must be steel or another suitable metal
What is the minimum thickness of a metal strike-off plate? - ANSWER-1/4 in. [6 mm]
What is the minimum thickness for a glass or acrylic strike-off plate? - ANSWER-1/2 in. [12 mm] 2 / 3
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What is the specified weight of the mallet used on measures that are 0.5 ft^3 [14 L] or smaller? - ANSWER-1.25 +- 0.50 lb. [600 +- 200 g]
Measures other than air meter bowls used for this test must conform to ASTM _____. - ANSWER-C29
Air meter bowls used for this test must conform to ASTM _____ and be calibrated for volumee according to ASTM _____. -
ANSWER-C231, C29
The concrete sample must be obtained in accodance with what ASTM method? - ANSWER-C172
What method of consolidation must be used when the slump is greater than 3 in. [75 mm]? - ANSWER-Rodding
What method of consolidation must be used when the slump is less than 1 in. (25 mm]? - ANSWER-Vibration
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