ACI Aggregate Testing Technician -
Level 1 - Section 8 Questions And
Answers
AASHTO T 21 / ASTM C40
This test method involves the use of hazardous materials. - (correct
answer) -True
AASHTO T 21 / ASTM C40
The user of these standards is responsible for any safety problems
associated with them. - (correct answer) -True
AASHTO T 21 / ASTM C40
The principal value of this test is to furnish a warning that injurious
amounts of ____ may be present. - (correct answer) -Organic
impurities
AASHTO T 21 / ASTM C40
A dark color in the test sample is a warning sign. - (correct answer) -
True
, AASHTO T 21 / ASTM C40
When a sample subjected to this test produces a color lighter than
the standard color solution, it is
advisable to perform the test for the effect of organic impurities on
the strength of the mortar. - (correct answer) -False; when it
produces a darker color
AASHTO T 21 / ASTM C40
When organic impurities are evident in the fine aggregate tested, it
is advisable to perform Test Method _____ . - (correct answer) -T 71
AASHTO T 21 / ASTM C40
For this test, bottles of at least 3 inch outside thickness should be
used. - (correct answer) -False; thickness no more than 2.5 in.
AASHTO T 21 / ASTM C40
Unmarked bottles may be calibrated and scribed with graduations
by the user. - (correct answer) -True
AASHTO T 21 / ASTM C40
In such case, graduation marks are required at only ____ points. -
(correct answer) -Three
AASHTO T 21 / ASTM C40
Level 1 - Section 8 Questions And
Answers
AASHTO T 21 / ASTM C40
This test method involves the use of hazardous materials. - (correct
answer) -True
AASHTO T 21 / ASTM C40
The user of these standards is responsible for any safety problems
associated with them. - (correct answer) -True
AASHTO T 21 / ASTM C40
The principal value of this test is to furnish a warning that injurious
amounts of ____ may be present. - (correct answer) -Organic
impurities
AASHTO T 21 / ASTM C40
A dark color in the test sample is a warning sign. - (correct answer) -
True
, AASHTO T 21 / ASTM C40
When a sample subjected to this test produces a color lighter than
the standard color solution, it is
advisable to perform the test for the effect of organic impurities on
the strength of the mortar. - (correct answer) -False; when it
produces a darker color
AASHTO T 21 / ASTM C40
When organic impurities are evident in the fine aggregate tested, it
is advisable to perform Test Method _____ . - (correct answer) -T 71
AASHTO T 21 / ASTM C40
For this test, bottles of at least 3 inch outside thickness should be
used. - (correct answer) -False; thickness no more than 2.5 in.
AASHTO T 21 / ASTM C40
Unmarked bottles may be calibrated and scribed with graduations
by the user. - (correct answer) -True
AASHTO T 21 / ASTM C40
In such case, graduation marks are required at only ____ points. -
(correct answer) -Three
AASHTO T 21 / ASTM C40
