2025 ACI CERTIFICATION- CONCRETE FIELD TESTING TECHNICIAN GRADE 1 CP-1 (12) QUESTIONS AND ANSWERS COMPLETE EXAM GUIDE 2025

2025 ACI CERTIFICATION- CONCRETE FIELD TESTING
TECHNICIAN GRADE 1 CP-1 (12) QUESTIONS AND
ANSWERS COMPLETE EXAM GUIDE 2025

ASTM C1064 - RIGHT ANSWER✔✔ Standard Test Method For Temperature of Freshly Mixed
Hydraulic- Cement Concrete



The sensor of the temperature measuring device shall be submerged a minimum of
inches into the freshly mixed concrete. - RIGHT ANSWER✔✔ 3"



The temperature measuring device shall have a capacity of measuring temperature of
freshly mixed concrete to ±_°F throughout a range of . - RIGHT ANSWER✔✔ 1
degree, 30
degrees to 120 degrees



The temperature measuring device shall be calibrated , or whenever there is a
question of-------------answer Annually, accuracy



The temperature of concrete may be measured in a wheelbarrow. True or False? - RIGHT
ANSWER✔✔ True



The temperature of concrete may be measured in a wall form. True or False? - RIGHT
ANSWER✔✔ True



What must be done to the sample container prior to sampling the concrete? - RIGHT
ANSWER✔✔ Dampen with water

,What must be done to the concrete surrounding the temperature measuring device after
the device is submerged in the fresh concrete? - RIGHT ANSWER✔✔ Close off air voids by
gently pressing the concrete around the device



How long must the temperature measuring device remain in the freshly mixed concrete? -
RIGHT ANSWER✔✔ minimum of two minutes, maximum of five minutes



The temperature of the concrete is reported to the nearest °F - RIGHT ANSWER✔✔ 1
degree



A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or False?
- RIGHT ANSWER✔✔ False



ASTM C172 - RIGHT ANSWER✔✔ Standard Practice for Sampling Freshly Mixed Concrete



Sampling by this method is required when tests are to be made to determine with
specification requirements. - RIGHT ANSWER✔✔ Compliance



This method covers sampling from four types of mixers, which are , , , and
. - RIGHT ANSWER✔✔ Stationary mixers, paving mixers, revolving drum mixers
and open top mixers



The maximum allowable time between obtaining the first and final portions of a composite
sample is______minutes. - RIGHT ANSWER✔✔ 15



Portions of a composite sample shall be thoroughly remixed before beginning tests on the
sample. True or False? - RIGHT ANSWER✔✔ True

, The maximum elapsed time allowed between obtaining the final portion of the composite
sample and beginning the tests for slump, temperature, and air content is minutes. -
RIGHT ANSWER✔✔ 5



The molding of strength test specimens shall begin within minutes after fabricating the
composite

sample. - RIGHT ANSWER✔✔ 15



The concrete sample must be protected from contamination and . - RIGHT
ANSWER✔✔ Rapid evaporation



The minimum size sample for making strength test specimens is . - RIGHT ANSWER✔✔
1 cubic foot



When sampling from a stationary mixer, the batch must be sampled at or more
regularly spaced intervals during discharge of the middle portion of the batch. - RIGHT
ANSWER✔✔ 2



The composite sample for a paving mixer must represent a minimum of different
portions of the batch of concrete taken from the pile after discharge. - RIGHT
ANSWER✔✔ 5



When sampling from a revolving drum truck mixer, concrete must be sampled at a
minimum of regularly spaced intervals during discharge of the middle portion of the batch.
- RIGHT ANSWER✔✔ 2



Concrete samples from a truck mixer must be obtained before any water or admixtures are
added to the mixer at the job site. True or False? - RIGHT ANSWER✔✔ False



The composite sample from a truck mixer must be obtained from the portion of the
batch. - RIGHT ANSWER✔✔ middle