ACI AGGREGATE TESTING TECHNICIAN
LEVEL 1 - SECTION 4 QUESTIONS WITH ALL
CORRECT & VERIFIED ANSWERS
AASHTO T 27 / ASTM C136
In this test method a set of sieves with progressively _____ openings determines the ______ of the
size of the particles sampled. Correct answer-Smaller, distribution
AASHTO T 27 / ASTM C136
The purpose of the test is to determine the _____ of the materials used as aggregates or proposed to
be used as aggregates. Correct answer-Grading
AASHTO T 27 / ASTM C136
Results of the test may also be useful in developing relationships related to porosity and packing.
Correct answer-True
AASHTO T 27 / ASTM C136
For material finer than the 75-μm sieve, you must use Test Method T 98. Correct answer-False;
Method T 11
AASHTO T 27 / ASTM C136
Balances for testing fine aggregate must be readable to _____ . Correct answer-0.1 g
AASHTO T 27 / ASTM C136
When a sample is 20 kg or more, a ____ shaker is recommended. Correct answer-Mechanical sieve
AASHTO T 27 / ASTM C136
More than ____ min. is considered excessive time spent in the mechanical sieve shaker and may
result in _____ of the sample. Correct answer-10, degradation
AASHTO T 27 / ASTM C136
The size of the field sample should be that shown in Practice T 2, or ____ that required in the chart
under 7.4 and 7.5 (except as modified in 7.6), whichever is greater. Correct answer-Four times
AASHTO T 27 / ASTM C136
The minimum size of the test sample of fine dry aggregate is _____ g. Correct answer-300
AASHTO T 27 / ASTM C136
Reduction of the size of the sample in the field may occur when ______ is the only test to be done.
Correct answer-Sieve analysis
AASHTO T 27 / ASTM C136
The size of the test sample of coarse aggregate or of aggregate mixtures must be between ___ and
___ kg. Correct answer-300, 500
AASHTO T 27 / ASTM C136
It is usually important to dry coarse aggregate for the sieve analysis or the results will be affected by
the moisture content. Correct answer-False; it's unnecessary; the results are affected little
AASHTO T 27 / ASTM C136
LEVEL 1 - SECTION 4 QUESTIONS WITH ALL
CORRECT & VERIFIED ANSWERS
AASHTO T 27 / ASTM C136
In this test method a set of sieves with progressively _____ openings determines the ______ of the
size of the particles sampled. Correct answer-Smaller, distribution
AASHTO T 27 / ASTM C136
The purpose of the test is to determine the _____ of the materials used as aggregates or proposed to
be used as aggregates. Correct answer-Grading
AASHTO T 27 / ASTM C136
Results of the test may also be useful in developing relationships related to porosity and packing.
Correct answer-True
AASHTO T 27 / ASTM C136
For material finer than the 75-μm sieve, you must use Test Method T 98. Correct answer-False;
Method T 11
AASHTO T 27 / ASTM C136
Balances for testing fine aggregate must be readable to _____ . Correct answer-0.1 g
AASHTO T 27 / ASTM C136
When a sample is 20 kg or more, a ____ shaker is recommended. Correct answer-Mechanical sieve
AASHTO T 27 / ASTM C136
More than ____ min. is considered excessive time spent in the mechanical sieve shaker and may
result in _____ of the sample. Correct answer-10, degradation
AASHTO T 27 / ASTM C136
The size of the field sample should be that shown in Practice T 2, or ____ that required in the chart
under 7.4 and 7.5 (except as modified in 7.6), whichever is greater. Correct answer-Four times
AASHTO T 27 / ASTM C136
The minimum size of the test sample of fine dry aggregate is _____ g. Correct answer-300
AASHTO T 27 / ASTM C136
Reduction of the size of the sample in the field may occur when ______ is the only test to be done.
Correct answer-Sieve analysis
AASHTO T 27 / ASTM C136
The size of the test sample of coarse aggregate or of aggregate mixtures must be between ___ and
___ kg. Correct answer-300, 500
AASHTO T 27 / ASTM C136
It is usually important to dry coarse aggregate for the sieve analysis or the results will be affected by
the moisture content. Correct answer-False; it's unnecessary; the results are affected little
AASHTO T 27 / ASTM C136
