ACI Concrete Field-Testing

ACI Concrete Field-Testing Technician Grade I Certification Exam Prep (Latest Update 2025 / 2026) Questions & Answers | Grade A | 100% Correct

Question:

What type of alcohol and concentration must be used in this test method?

Answer:

Isopropyl, 70% by volume (65% by weight)

Question:

A mallet weighing ____ must be used to tap the sides of the bowl after rodding each layer

Answer:

1.25 +-0.5 lb

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Question:

The sample of concrete used in the test method must be obtained in accordance with what ASTM Practice?

Answer:

C172

Question:

The maximum size aggregate allowed in this test method is ___

Answer:

1.5 inch

Question:

If the concrete sample contains aggregate larger than that allowed for this test, the sample must be ____

Answer:

Wet sieved over a 1 in sieve

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Question:

When filling the measuring bowl of the air meter, the concrete must be placed in ___ layers of equal volume

Answer:

2

Question:

What is the specified number of strokes required when rodding each layer of concrete?

Answer:

25

Question:

It is necessary to tap the sides of the measuring bowl after each layer has been rodded

Answer:

True

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Question:

The initial quantity of water and alcohol added to the air meter can be poured directly into the neck of the top section of the air meter

Answer:

False, the funnel must be used

Question:

Upon final filling of the air meter with water, what part of the liquid level should be adjusted to the zero

Answer:

Bottom of the meniscus

Question:

How long should the air meter be inverted and agitated?

Answer:

No more than 5 seconds at a time, but must be repeated for a minimum of 45 seconds to free concrete from the base

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