ACI Aggregate Testing Technician - Level 1 - Section 8 Questions And Answers.

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