ACI Aggregate Testing Technician questions
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and answers graded a+ by experts
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Performance Checklist: l
Sampling of Aggregates: l l
Flowing Aggregate Stream (Bins or Belt Discharge)
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5 steps - (correct answer) -1. Use a device that will hold the required
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l amount of material without overflowing.
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2. Take each increment from the entire cross section of the material
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l discharge stream l l
3. Obtain a minimum of three approximately equal increments.
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4. Combine the increments to form a field sample.
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,5. Ensure that the size of the field sample equals or exceeds the
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approximate minimum mass needed or stated in Table 1.
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Performance Checklist: l
Sampling of Aggregates: l l
Conveyor Belt l
7 Steps - (correct answer) -1. Stop the conveyor belt and insert two
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templates conforming to the shape of the belt into the aggregate
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steam.
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2. Space the templates so the material between will yield an
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increment of the required mass.
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3. Carefully scoop the material between the templates into a suitable
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container.
l
, 4. Collect the fines with a brush and dust pan and add to the
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container.
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5. Obtain a minimum of three approximately equal increments.
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6. Combine the increments to form a field sample.
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7. Ensure that the size of the field sample equals or exceeds the
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approximate minimum mass needed or stated in Table 1.
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Performance Checklist: l
Sampling of Aggregates: l l
Stockpiles (Manual Sampling) l l
7 Steps - (correct answer) -Course Aggregate
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1. Shove a board vertically into the pile just above the sampling point.
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l l l l
and answers graded a+ by experts
l l l l l l
Performance Checklist: l
Sampling of Aggregates: l l
Flowing Aggregate Stream (Bins or Belt Discharge)
l l l l l l
5 steps - (correct answer) -1. Use a device that will hold the required
l l l l l l l l l l l l l
l amount of material without overflowing.
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2. Take each increment from the entire cross section of the material
l l l l l l l l l l l
l discharge stream l l
3. Obtain a minimum of three approximately equal increments.
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4. Combine the increments to form a field sample.
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,5. Ensure that the size of the field sample equals or exceeds the
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approximate minimum mass needed or stated in Table 1.
l l l l l l l l l
Performance Checklist: l
Sampling of Aggregates: l l
Conveyor Belt l
7 Steps - (correct answer) -1. Stop the conveyor belt and insert two
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templates conforming to the shape of the belt into the aggregate
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steam.
l
2. Space the templates so the material between will yield an
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increment of the required mass.
l l l l l
3. Carefully scoop the material between the templates into a suitable
l l l l l l l l l l
container.
l
, 4. Collect the fines with a brush and dust pan and add to the
l l l l l l l l l l l l l
container.
l
5. Obtain a minimum of three approximately equal increments.
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6. Combine the increments to form a field sample.
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7. Ensure that the size of the field sample equals or exceeds the
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approximate minimum mass needed or stated in Table 1.
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Performance Checklist: l
Sampling of Aggregates: l l
Stockpiles (Manual Sampling) l l
7 Steps - (correct answer) -Course Aggregate
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1. Shove a board vertically into the pile just above the sampling point.
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