ACI Aggregate Testing Technician - Level 1 -
Section 5 Questions And Answers
The method is appropriate for coarse but not ____
aggregate. - (correct answer) -Lightweight
SSD refers to _____ - _____ - _____ condition. - (correct
answer) -saturated-surface-dry
To calculate the volume of aggregate in a mixture
(including the voids between the particles) is to determine
the ______. - (correct answer) -Bulk specific gravity
When the mass of the water within the voids after 24-hour
absorption is included in the volume of aggregate, you are
calculating the ______. - (correct answer) -Relative specific
gravity (SSD)
Computing the impermeable portion of the aggregate is
finding the _____. - (correct answer) -Apparent specific
gravity
The laboratory standard for absorption is the level
obtained after ____ of soaking. - (correct answer) -15 hr
Absorption values pertain to the ____ in the mass of the
aggregate due to ____ absorbed in the pores. - (correct
answer) -Change, water
Forms of conditioning (besides the 15-hr soak) for which
this test may be used include ______ and _____. - (correct
answer) -Boiling water, vacuum saturation
Section 5 Questions And Answers
The method is appropriate for coarse but not ____
aggregate. - (correct answer) -Lightweight
SSD refers to _____ - _____ - _____ condition. - (correct
answer) -saturated-surface-dry
To calculate the volume of aggregate in a mixture
(including the voids between the particles) is to determine
the ______. - (correct answer) -Bulk specific gravity
When the mass of the water within the voids after 24-hour
absorption is included in the volume of aggregate, you are
calculating the ______. - (correct answer) -Relative specific
gravity (SSD)
Computing the impermeable portion of the aggregate is
finding the _____. - (correct answer) -Apparent specific
gravity
The laboratory standard for absorption is the level
obtained after ____ of soaking. - (correct answer) -15 hr
Absorption values pertain to the ____ in the mass of the
aggregate due to ____ absorbed in the pores. - (correct
answer) -Change, water
Forms of conditioning (besides the 15-hr soak) for which
this test may be used include ______ and _____. - (correct
answer) -Boiling water, vacuum saturation
