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ACI Grade 1 Written Exam Practice Questions and Answers 100% Pass

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  • Course
  • ACI concrete strength technician
  • Institution
  • ACI Concrete Strength Technician

ACI Grade 1 Written Exam Practice Questions and Answers 100% Pass The temp. measuring device shall be capable of accurately measuring the temp. of freshly mixed concrete to ____ throughout a range of ____. - ANSWER-1 Degree F, 30-120 Degrees F A composite sample of concrete is required even if...

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  • November 18, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ACI concrete strength technician
  • ACI concrete strength technician
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SophiaBennett
ACI Grade 1 Written Exam Practice
Questions and Answers 100% Pass

The temp. measuring device shall be capable of accurately measuring the temp. of

freshly mixed concrete to ____ throughout a range of ____. - ANSWER✔✔-1 Degree F,

30-120 Degrees F


A composite sample of concrete is required even if the only purpose for obtaining the

sample is to determine the temp. T or F? - ANSWER✔✔-False


C172/C172M covers sampling from five type of equipment which are___, ___, ___, ___,

& ____? - ANSWER✔✔-revolving drum, stationary, paving, continuous, & open top


The mold for making the slump test is in the shape of ____. - ANSWER✔✔-the frustum

of a cone


The surface on which the slump mold will be placed must be ____. - ANSWER✔✔-Flat,

moist non-absorbent, & rigid


How deep should the tamping rod penetrate each layer? - ANSWER✔✔-Rod each layer

throughout it's depth , on second & final layer the rod should penetrate into the

previous layer approximately 1 in.




Copyright ©SOPHIABENNETT 2025 ACADEMIC YEARALL RIGHTS RESERVED. Page 1/7

, Prior to lifting the mold, concrete must be removed from ____. - ANSWER✔✔-the area

surrounding the base of the mold


What is the minimum frequency of the vibrator used in Test Method C138/C138M -

ANSWER✔✔-9000 Vibrations/Min., 150 Hertz


What is the minimum thickness of a metal strike-off plate used in Test Method

C138/C138M? - ANSWER✔✔-1/4 in.


What is the minimum thickness of a glass/acrylic strike-off plate used in Test Method

C138/C138M? - ANSWER✔✔-1/2 in.


Measures other than air meter bowls used for Test Method C138/C138M must conform

to Test Method ___. - ANSWER✔✔-C29/C29M


Air meter bowls used for Test Method C138/C138M must conform to Test Method ___

and be calibrated for volume according to Test Method ___. - ANSWER✔✔-C231, C29


The pressure method of determining air content can be used on concrete containing ___

____ aggregate. - ANSWER✔✔-relatively dense


The pressure method of determining air content cannot be used on concrete containing

the following types of aggregate: ___, ___, & ___. - ANSWER✔✔-light weight, air-

cooled blast furnace slag, & aggregate of high porosity


What is the minimum allowable capacity of the measuring bowl used in Test Method

C231/C231M? - ANSWER✔✔-6L (0.2ft^3)

Copyright ©SOPHIABENNETT 2025 ACADEMIC YEARALL RIGHTS RESERVED. Page 2/7

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