ACI Concrete Field Test Solution Manual Fully Solved 2025-2026 Already Passed
The concrete sample(s) must always be protected from - Answers All of the above (Sun, Wind,
Contamination)
When concrete contains aggregate particles larger than permitted, the concrete sample must be -
Answers Wet sieved
The maximum allowable time for obtaining the first and final portion of the composition is - Answers 15
minutes
Slump must be started within _____ after obtaining the final portion of the composite sample - Answers
5 minutes
When strength tests are to be made, the minimum sample size of the composite sample shall be -
Answers 1 cubic foot
When sampling from a revolving truck mixer, the sample shall be taken during the discharge of -
Answers The middle portion of the batch
When sampling from paving mixers, obtain samples - Answers From at least 5 portions of the pile
Start molding samples for strength within _____ after preparing for the composite sample - Answers 15
minutes
The slump mold must be placed - Answers On a flat, clean, moist, non-absorbent, rigid surface
Each layer of concrete in the slump test mold must be consolidated by - Answers Rodding 25 times,
uniformly distributing the strokes
Strike off the top of the slump mold with a - Answers Tamping rod
The tamping rod used in the slump test must be - Answers ⅝-in. Diameter rod with a rounded tamping
end
The total elapsed time between start and finish of slump test must be completed within - Answers 2-½
minutes
If falling away or shearing off of concrete occurs after lifting the slump cone - Answers Disregard
The dimensions of the mold for the slump test are - Answers 8 inch dia base, 4 inch dia top, and 12
inches high
If the concrete slump measures 4-5/16 inches, record the slump as - Answers 4-¼ inches
The minimum capacity of a unit weight measure (bucket) is based on the - Answers Nominal maximum
size of coarse aggregate in the concrete
The concrete sample(s) must always be protected from - Answers All of the above (Sun, Wind,
Contamination)
When concrete contains aggregate particles larger than permitted, the concrete sample must be -
Answers Wet sieved
The maximum allowable time for obtaining the first and final portion of the composition is - Answers 15
minutes
Slump must be started within _____ after obtaining the final portion of the composite sample - Answers
5 minutes
When strength tests are to be made, the minimum sample size of the composite sample shall be -
Answers 1 cubic foot
When sampling from a revolving truck mixer, the sample shall be taken during the discharge of -
Answers The middle portion of the batch
When sampling from paving mixers, obtain samples - Answers From at least 5 portions of the pile
Start molding samples for strength within _____ after preparing for the composite sample - Answers 15
minutes
The slump mold must be placed - Answers On a flat, clean, moist, non-absorbent, rigid surface
Each layer of concrete in the slump test mold must be consolidated by - Answers Rodding 25 times,
uniformly distributing the strokes
Strike off the top of the slump mold with a - Answers Tamping rod
The tamping rod used in the slump test must be - Answers ⅝-in. Diameter rod with a rounded tamping
end
The total elapsed time between start and finish of slump test must be completed within - Answers 2-½
minutes
If falling away or shearing off of concrete occurs after lifting the slump cone - Answers Disregard
The dimensions of the mold for the slump test are - Answers 8 inch dia base, 4 inch dia top, and 12
inches high
If the concrete slump measures 4-5/16 inches, record the slump as - Answers 4-¼ inches
The minimum capacity of a unit weight measure (bucket) is based on the - Answers Nominal maximum
size of coarse aggregate in the concrete
