CT 125 AGG - SAMPLING HIGHWAY
MATERIALS (APPENDIX A) EXAM
QUESTIONS AND ANSWERS 2026
VERIFIED.
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
Where should aggregates be sampled at a concrete batch plant? - ANS From the belt feeding
the batch plant bins immediately preceding the weigh hopper
@2026/2027 ALLRIGHTS RESERVED.
, 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
How should windrow samples bet taken? - ANS Isolate the sample area using steel or
plywood templates and remove the entire cross section of the windrow before water is added
When aggregate has been spread but not yet compacted, how many locations transversely
across the roadway section should be sampled? - ANS 3 minimum
How deep into the roadway should aggregate be taken? - ANS Full depth, being careful not to
include the underlying material
For any given aggregate type, what amount of material should be sampled? - ANS Amount
that meets or exceeds the quantity needed for subsequent testing
When sampling aggravate from HMA batch plants, who is responsible for providing the
sampling device? - ANS Contractor
@2026/2027 ALLRIGHTS RESERVED.
MATERIALS (APPENDIX A) EXAM
QUESTIONS AND ANSWERS 2026
VERIFIED.
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
Where should aggregates be sampled at a concrete batch plant? - ANS From the belt feeding
the batch plant bins immediately preceding the weigh hopper
@2026/2027 ALLRIGHTS RESERVED.
, 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
How should windrow samples bet taken? - ANS Isolate the sample area using steel or
plywood templates and remove the entire cross section of the windrow before water is added
When aggregate has been spread but not yet compacted, how many locations transversely
across the roadway section should be sampled? - ANS 3 minimum
How deep into the roadway should aggregate be taken? - ANS Full depth, being careful not to
include the underlying material
For any given aggregate type, what amount of material should be sampled? - ANS Amount
that meets or exceeds the quantity needed for subsequent testing
When sampling aggravate from HMA batch plants, who is responsible for providing the
sampling device? - ANS Contractor
@2026/2027 ALLRIGHTS RESERVED.
