ACI CONCRETE STRENGTH TESTING TECHNICIAN
EXAM NEWEST 2025/ 2026 ACTUAL EXAM 200
QUESTIONS AND CORRECT DETAILED ANSWERS
WITH RATIONALES (VERIFIED ANSWERS) |A+
GRADED||SUCCESS GUARANTEED!!!
(C617) When capping cylinders it is acceptable to ___ but
not rock the capping plate in an effort to extrude excess
material and air voids - ANSWER-twist
(C617) What type of gas can be produced when sulfur
mortar is contaminated with organic material? - ANSWER-
Hydrogen sulfide gas
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(C617) When capping cylinders it is acceptable to twist but
not rock the capping plate in an effort to extrude___ ___
and ___ ___ - ANSWER-excess material and air voids
(C617) Neat cement paste caps can ___ and ___ if
allowed to dry - ANSWER-shrink and crack
(C617) The end of a capped cylinder must be plane to
within ___in - ANSWER-.002in (.05mm)
(C617) Empty the pot and recharge with fresh material to
ensure the oldest material is not reheated more than how
many times? - ANSWER-5 times
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(C617) Cement paste should be applied to freshly molded
cylinder within how many hours after molding to allow for
settling of the concrete specimen - ANSWER-within 2 to 4
hours
(C617) The vertical distance between the highest and
lowest points on the end of an uncapped cylinder shall not
exceed ___ - ANSWER-1/8 inch (3mm)
(C617) The guide bar/bullseye level ensures caps are
perpendicular to the axis within __ degrees - ANSWER-.5
degrees
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(C617) Remove and replace any caps having voids or
steam pockets greater than __in - ANSWER-1/4 inch
(6mm)
(C617) Metal capping plates should be free of gouges
greater than ___in - ANSWER-.01 inch (25mm)
(C617) In general with high strength gypsum paste, a
capping plate may be removed within how many minutes
without visibly damaging the cap? - ANSWER-45 mins
What is ASTM C39? - ANSWER-Standard Test Method for
Compressive strength of cylindrical concrete specimens