ACI Certification- Concrete Field Testing Technician Grade 1 CP-1 (12) Questions and answers Latest 2025/2026 With complete solution 100% VERIFIED CORRECT

ACI Cer fica on- Concrete Field Tes ng Technician
Grade 1 CP-1 (12) Ques ons and answers Latest
2025/2026 With complete solu on 100% VERIFIED
CORRECT
ASTM C1064 - Correct Answers 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. - Correct Answers 3"



The temperature measuring device shall have a capacity of measuring temperature of freshly
mixed concrete to ± ______ °F throughout a range of ____________. - Correct Answers 1
degree, 30 degrees to 120 degrees



The temperature measuring device shall be calibrated ______ , or whenever there is a ques-on
of ______ . - Correct Answers Annually, accuracy



The temperature of concrete may be measured in a wheelbarrow. True or False? - Correct
Answers True



The temperature of concrete may be measured in a wall form. True or False? - Correct Answers
True



What must be done to the sample container prior to sampling the concrete? - Correct Answers
Dampen with water

,What must be done to the concrete surrounding the temperature measuring device a1er the
device is submerged in the fresh concrete? - Correct Answers 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? -
Correct Answers minimum of two minutes, maximum of five minutes



The temperature of the concrete is reported to the nearest ______ °F - Correct Answers 1
degree



A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or False? -
Correct Answers False



ASTM C172 - Correct Answers Standard Prac-ce for Sampling Freshly Mixed Concrete



Sampling by this method is required when tests are to be made to determine _____ with
specifica-on requirements. - Correct Answers Compliance



This method covers sampling from four types of mixers, which are _____ , _____ , _____ , and
_____ . - Correct Answers Sta-onary mixers, paving mixers, revolving drum mixers and open
top mixers



The maximum allowable -me between obtaining the first and final por-ons of a composite
sample is _____ minutes. - Correct Answers 15



Por-ons of a composite sample shall be thoroughly remixed before beginning tests on the
sample. True or False? - Correct Answers True

, The maximum elapsed -me allowed between obtaining the final por-on of the composite
sample and beginning the tests for slump, temperature, and air content is _____ minutes. -
Correct Answers 5



The molding of strength test specimens shall begin within _____ minutes a1er fabrica-ng the
composite

sample. - Correct Answers 15



The concrete sample must be protected from contamina-on and _____. - Correct Answers
Rapid evapora-on



The minimum size sample for making strength test specimens is _____. - Correct Answers 1
cubic foot



When sampling from a sta-onary mixer, the batch must be sampled at _____ or more regularly
spaced intervals during discharge of the middle por-on of the batch. - Correct Answers 2



The composite sample for a paving mixer must represent a minimum of _____ different
por-ons of the batch of concrete taken from the pile a1er discharge. - Correct Answers 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 por-on of the batch. - Correct
Answers 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? - Correct Answers False



The composite sample from a truck mixer must be obtained from the _____ por-on of the
batch. - Correct Answers middle