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CT 125 AGG - Sampling Highway Materials
(Appendix A) Questions and Correct
Answers/ Latest Update / Already Graded
When sampling individual aggregate hot bins, what type of device is
used?
Ans: A pan of sufficient size to intercept the entire cross-
section of the discharge stream and hold the required quantity
of material without overflowing
Where is one location that baghouse dust can be sampled?
Ans: From the bottom of the bathhouse, from the feed line, or
from the surge tank preceding the proportioning device
Where is the aggregate normally sampled at an HMA continuous
mixing plant?
Ans: From a sampling device located in advance of the point
before the aggregate enters the drier-drum mixer
What are the functional requirements of the sampling device?
Ans: The sampling device must intercept the entire cross -
section of the discharge stream and hold the required quantity
of material without overflowing
All rights reserved © 2025/ 2026 |
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Where should aggregates be sampled at a concrete batch plant?
Ans: From the belt feeding the batch plant bins immediately
preceding the weigh hopper
When taking a belt cut from a feed belt, how many templates should
be used?
Ans: Two
What shape should the templates be?
Ans: The templates should conform to the shape of the belt
Once the belt is stopped and the templates are in place, how should
the sample be taken?
Ans: Completely remove the material between the templates,
including all the fines.
Where in a windrow should samples be taken?
Ans: From the middle half
All rights reserved © 2025/ 2026 |
CT 125 AGG - Sampling Highway Materials
(Appendix A) Questions and Correct
Answers/ Latest Update / Already Graded
When sampling individual aggregate hot bins, what type of device is
used?
Ans: A pan of sufficient size to intercept the entire cross-
section of the discharge stream and hold the required quantity
of material without overflowing
Where is one location that baghouse dust can be sampled?
Ans: From the bottom of the bathhouse, from the feed line, or
from the surge tank preceding the proportioning device
Where is the aggregate normally sampled at an HMA continuous
mixing plant?
Ans: From a sampling device located in advance of the point
before the aggregate enters the drier-drum mixer
What are the functional requirements of the sampling device?
Ans: The sampling device must intercept the entire cross -
section of the discharge stream and hold the required quantity
of material without overflowing
All rights reserved © 2025/ 2026 |
, Page |2
Where should aggregates be sampled at a concrete batch plant?
Ans: From the belt feeding the batch plant bins immediately
preceding the weigh hopper
When taking a belt cut from a feed belt, how many templates should
be used?
Ans: Two
What shape should the templates be?
Ans: The templates should conform to the shape of the belt
Once the belt is stopped and the templates are in place, how should
the sample be taken?
Ans: Completely remove the material between the templates,
including all the fines.
Where in a windrow should samples be taken?
Ans: From the middle half
All rights reserved © 2025/ 2026 |
