ACI Aggregate Testing Technician - Level 1 - Section 8

ACI Aggregate Testing Technician - Level 1 -
Section 8
This test method involves the use of hazardous materials. True or False?
True
The user of these standards is responsible for any safety problems associated
with them. True or False?
True
The principal value of this test is to furnish a warning that injurious amounts of
____ may be present.
Organic impurities
A dark color in the test sample is a warning sign. True or False?
True
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. True or False?
False; when it produces a darker color
When organic impurities are evident in the fine aggregate tested, it is advisable to
perform Test Method _____ .
T71
For this test, bottles of at least 3 inch outside thickness should be used. True or
False?
False; thickness no more than 2.5 in.
Unmarked bottles may be calibrated and scribed with graduations by the user.
True or False?
True
In such case, graduation marks are required at only ____ points.
Three
The bottles used should be a light green in color. True or False?
False; Colorless glass
The graduations on the bottles should always be in ounces. True or False?
False; milliliters or ounces
Bottles used for tests should:
a) have water-tight caps or stoppers
b) be light green in color
c) be more than 2-1/2 in. thick
d) all of the above
e) none of the above
a) have water-tight caps or stoppers
The amount of Sodium Hydroxide Solution (NaOH) needed by mass for the test is
_____ %.
3