ACI AGGREGATE TESTING TECHNICIAN
EXAM QUESTIONS AND ANSWERS 100
PERCENT PASS COMPREHENSIVE STUDY
GUIDE QUESTIONS WITH VERIFIED
ANSWERS GRADED A+
⩥ Performance Checklist:
Sampling of Aggregates:
Stockpiles (Manual Sampling)
7 Steps. Answer: Course Aggregate
1. Shove a board vertically into the pile just above the sampling point.
2. Take increments from the top third, mid-point, and bottom third of the
volume of the pile.
Fine Aggregate
3. Remove the outer layer and sample from the material beneath.
,4. Insert the appropriate sampling tube randomly to extract the
increments.
5. Obtain a minimum of five increments.
Coarse and Fine Aggregate
6. Combine the increments to form a field sample.
7. Ensure that the size of the field sample equals or exceeds the
approximate minimum mass needed or stated in Table 1.
⩥ Performance Checklist:
Sampling of Aggregates:
Transportation Units (Manual Sampling)
7 Steps. Answer: 1. Excavate a minimum of three trenches at points
across the unit that will give an estimate of the characteristics of the
load.
2. Ensure the trench bottom is level and the trench is 0.3m in both with
and depth.
, Coarse Aggregate
3. Obtain an increment by pushing a shovel downward into the material.
4. Obtain a minimum of three increments from approximately equally
spaced points along each trench.
Fine Aggregate
5. Insert the appropriate sampling tube to extract the appropriate number
of increments.
Coarse and Fine Aggregate
6. Combine the increments to form a field sample.
7. Ensure that the size of the field sample equals or exceeds the
appropriate minimum mass needed or stated in Table 1.
⩥ Performance Checklist:
Sampling of Aggregates:
Roadway (Bases and Sub-bases)
EXAM QUESTIONS AND ANSWERS 100
PERCENT PASS COMPREHENSIVE STUDY
GUIDE QUESTIONS WITH VERIFIED
ANSWERS GRADED A+
⩥ Performance Checklist:
Sampling of Aggregates:
Stockpiles (Manual Sampling)
7 Steps. Answer: Course Aggregate
1. Shove a board vertically into the pile just above the sampling point.
2. Take increments from the top third, mid-point, and bottom third of the
volume of the pile.
Fine Aggregate
3. Remove the outer layer and sample from the material beneath.
,4. Insert the appropriate sampling tube randomly to extract the
increments.
5. Obtain a minimum of five increments.
Coarse and Fine Aggregate
6. Combine the increments to form a field sample.
7. Ensure that the size of the field sample equals or exceeds the
approximate minimum mass needed or stated in Table 1.
⩥ Performance Checklist:
Sampling of Aggregates:
Transportation Units (Manual Sampling)
7 Steps. Answer: 1. Excavate a minimum of three trenches at points
across the unit that will give an estimate of the characteristics of the
load.
2. Ensure the trench bottom is level and the trench is 0.3m in both with
and depth.
, Coarse Aggregate
3. Obtain an increment by pushing a shovel downward into the material.
4. Obtain a minimum of three increments from approximately equally
spaced points along each trench.
Fine Aggregate
5. Insert the appropriate sampling tube to extract the appropriate number
of increments.
Coarse and Fine Aggregate
6. Combine the increments to form a field sample.
7. Ensure that the size of the field sample equals or exceeds the
appropriate minimum mass needed or stated in Table 1.
⩥ Performance Checklist:
Sampling of Aggregates:
Roadway (Bases and Sub-bases)
