ACI Concrete Strength Testing Technician Sample Written Exam Questions with
correct stated answers
E) - correct answer-These procedures for capping enable concrete cylinders and cores to
meet the standard's requirements for: a) planeness b)strength c) perpendicularity d) B and
C e) A and C
E) - correct answer-The strength of the neat hydraulic cement paste used for capping
cylinders depends on: a) the water/cement ratio b) time c) its consistency d) the type of
cement e) all of the above
A) - correct answer-The maximum allowable depth of depressions in the ends of cylinders
that need not be sawed or ground in: a) 5 mm [0.20 in.] b) 6 mm [0.24 in.] c) 8 mm [0.31 in.]
d) 9 mm [0.35 in.]
B) - correct answer-Practie C1231/C1231M contains step-by-step procedures for aligning
the specimens in the testing machine through initial application of the load: a) True b)
False
A) - correct answer-This test method consists of applying a compressive axial load to
molded cylinders or cores at a rate which is within a prescribed range until failure occurs:
a) True b) False
B) - correct answer-The percent error for loads used in the testing machine should not
exceed ___ percent of the indicated load: a) +/- 0.05% b) +/- 1.0% c) +/- 0.5% d) +/- 1.5% e)
+/- 2.0%
B) - correct answer-To determine the average width, depth, and line of fracture location of
the specimen, you should take ___ measurements across each dimension: a) 2 b) 3 c) 4 d)
5
correct stated answers
E) - correct answer-These procedures for capping enable concrete cylinders and cores to
meet the standard's requirements for: a) planeness b)strength c) perpendicularity d) B and
C e) A and C
E) - correct answer-The strength of the neat hydraulic cement paste used for capping
cylinders depends on: a) the water/cement ratio b) time c) its consistency d) the type of
cement e) all of the above
A) - correct answer-The maximum allowable depth of depressions in the ends of cylinders
that need not be sawed or ground in: a) 5 mm [0.20 in.] b) 6 mm [0.24 in.] c) 8 mm [0.31 in.]
d) 9 mm [0.35 in.]
B) - correct answer-Practie C1231/C1231M contains step-by-step procedures for aligning
the specimens in the testing machine through initial application of the load: a) True b)
False
A) - correct answer-This test method consists of applying a compressive axial load to
molded cylinders or cores at a rate which is within a prescribed range until failure occurs:
a) True b) False
B) - correct answer-The percent error for loads used in the testing machine should not
exceed ___ percent of the indicated load: a) +/- 0.05% b) +/- 1.0% c) +/- 0.5% d) +/- 1.5% e)
+/- 2.0%
B) - correct answer-To determine the average width, depth, and line of fracture location of
the specimen, you should take ___ measurements across each dimension: a) 2 b) 3 c) 4 d)
5
