ACI - Aggregate Base Testing Technician
{latest 2026 -2027 update} questions and
answers 100% correct
The number of shocks needed to close the groove of each sample is correlated with
the moisture content to determine the _________ of the soil. - correct answer Liquid
Limit
T or F
All of the material in the cup is used for determining the moisture content for the liquid
limit test. - correct answer False
The liquid limit procedure is repeated until one determination is made in the ranges of
____, ____, and ____ and the range between each is at least ___. - correct answer 25-35,
20-30, 15-25; 10
,The liquid limit is the moisture content corresponding to the intersection of the flow
curve with the ___ ordinate. - correct answer 25 shock
What is defined as the lowest water content determined at which the soil remains
plastic? - correct answer Plastic limit of a soil
The _______ of a soil is the range in water content, expressed as a percentage of the
ass of an oven dried soil, within which the material is in a plastic state. - correct
answer Plasticity index
The dish used for the plastic limit procedure should have a diameter of about ____mm.
- correct answer 115
How much of a sieved portion of sample is needed if only the plastic limit of a soil is
required? - correct answer 20 g
, (PL) After placing the air dried soil in a mixing dish, thoroughly mix it with water until
the mass becomes plastic enough to be easily shaped into a ___. This sample should be
approximately ____g. - correct answer ball; 8
(PL) The sample is rolled into a thread of _____ diameter throughout its length. -
correct answer 3mm
(PL) Each thread is formed from ___ to __g of the test sample. - correct answer 1.5-2.0
The _____ limit is expressed as the water content in percentage of the mass of the
oven-dried soil, recorded to the nearest whole number. - correct answer Plastic
The ______ is calculated as the difference between its liquid limit and its plastic limit. -
correct answer Plasticity Index
{latest 2026 -2027 update} questions and
answers 100% correct
The number of shocks needed to close the groove of each sample is correlated with
the moisture content to determine the _________ of the soil. - correct answer Liquid
Limit
T or F
All of the material in the cup is used for determining the moisture content for the liquid
limit test. - correct answer False
The liquid limit procedure is repeated until one determination is made in the ranges of
____, ____, and ____ and the range between each is at least ___. - correct answer 25-35,
20-30, 15-25; 10
,The liquid limit is the moisture content corresponding to the intersection of the flow
curve with the ___ ordinate. - correct answer 25 shock
What is defined as the lowest water content determined at which the soil remains
plastic? - correct answer Plastic limit of a soil
The _______ of a soil is the range in water content, expressed as a percentage of the
ass of an oven dried soil, within which the material is in a plastic state. - correct
answer Plasticity index
The dish used for the plastic limit procedure should have a diameter of about ____mm.
- correct answer 115
How much of a sieved portion of sample is needed if only the plastic limit of a soil is
required? - correct answer 20 g
, (PL) After placing the air dried soil in a mixing dish, thoroughly mix it with water until
the mass becomes plastic enough to be easily shaped into a ___. This sample should be
approximately ____g. - correct answer ball; 8
(PL) The sample is rolled into a thread of _____ diameter throughout its length. -
correct answer 3mm
(PL) Each thread is formed from ___ to __g of the test sample. - correct answer 1.5-2.0
The _____ limit is expressed as the water content in percentage of the mass of the
oven-dried soil, recorded to the nearest whole number. - correct answer Plastic
The ______ is calculated as the difference between its liquid limit and its plastic limit. -
correct answer Plasticity Index
