Asphalt/Concrete Questions with
Correct Answers
American Concrete Institute (ACI) - ANSWERSAn international organization providing
education,
certification, and information about concrete.
Amplitude - ANSWERSThe magnitude of the motion in each vibration
Apron feeder - ANSWERSA feeder constructed of overlapping pans that form a
continuous belt
Asphalt Cement - ANSWERSIt is a bituminous material that is produced by distillation of
petroleum crude oil.
Asphalt Cutbacks - ANSWERSAre a blend of asphalt cement and a fuel product.
Asphalt Emulsions - ANSWERSAre produced by using a colloidal mill to break down
asphalt cement into very fine "globules" that are introduced into water that has been
treated with an emulsifying
agent.
Asphalt Plant - ANSWERSA high-tech group of machines capable of uniformly blending,
heating, and mixing the aggregates and asphalt cement to produce asphalt concrete,
while meeting strict
environmental regulations.
Asphaltic Concrete - ANSWERSA composite material that is prepared in a hot-mix plant
and used for construction of highway, parking lot, or airfield pavements capable of
supporting high traffic load volumes and axle loads.
Automatic Screed Controls - ANSWERSA system that overrides the self-leveling action
of the asphalt paver screed and enables paving to a predetermined grade and slope,
using either a rigid or a
mobile type reference.
Baghouse - ANSWERSFilter system at an asphalt plant to capture fine dust particles.
Batch - ANSWERSAmount of concrete produced in one mixing operation.
Belt feeder - ANSWERSA feeder that is used for smaller sizes of material, usually sand
or small-diameter aggregates.
, Binder Course - ANSWERSA layer of asphalt mix placed between the base and the
surface courses in the pavement structure.
Binder - ANSWERSThe asphalt cement material in a paving mix used to bind the
aggregate particles together, to prevent the entrance of moisture, and to act as a
cushioning agent.
Breakdown - ANSWERSThe initial compaction of the asphalt mix that takes place
directly behind the paver and is intended to achieve maximum density in the shortest
time frame.
Contraction Joints - ANSWERSJoints for the purpose of regulating cracking from the
unavoidable and unpredictable contraction of concrete.
Cross-slope - ANSWERSThe transverse inclination of a road way or other surface.
Dwell Time - ANSWERSThe time required for material to pass through a dryer or
mixture.
Expansion Joints - ANSWERSSeparations between adjoining parts of a concrete
structure.
Flexible Pavement - ANSWERSThey have a ride surface constructed with a
combination of asphalt cement and aggregates.
Flights - ANSWERSMetal plates of various shapes placed longitudinally inside the shell
of a drum dryer or mixture. As the material moves through the drum, the flight first lift
the aggregate and then
tumble it through the hot gases.
Formed - ANSWERSWhere the paving machine rides on steel forms that are set to the
proper line and grade for the finished slab.
Freefall Mixer - ANSWERSBlends concrete by lifting the ingredients with the aid of fixed
blades inside a rotating drum and then dropping the material by overcoming the friction
between the mixture
and the blades.
Frequency - ANSWERSThe number of vibrations per unit time (commonly minutes)
Friction course - ANSWERSThe top surface layer of an asphalt pavement, usually less
than 1 in. thick, to improve skid resistance and smoothness.
Grade or string line - ANSWERSA wire or string erected at a specified grade and
alignment that is used as a reference for an automatic control system on a paver, a
milling machine, or a fine-grade machine (trimmer).
Correct Answers
American Concrete Institute (ACI) - ANSWERSAn international organization providing
education,
certification, and information about concrete.
Amplitude - ANSWERSThe magnitude of the motion in each vibration
Apron feeder - ANSWERSA feeder constructed of overlapping pans that form a
continuous belt
Asphalt Cement - ANSWERSIt is a bituminous material that is produced by distillation of
petroleum crude oil.
Asphalt Cutbacks - ANSWERSAre a blend of asphalt cement and a fuel product.
Asphalt Emulsions - ANSWERSAre produced by using a colloidal mill to break down
asphalt cement into very fine "globules" that are introduced into water that has been
treated with an emulsifying
agent.
Asphalt Plant - ANSWERSA high-tech group of machines capable of uniformly blending,
heating, and mixing the aggregates and asphalt cement to produce asphalt concrete,
while meeting strict
environmental regulations.
Asphaltic Concrete - ANSWERSA composite material that is prepared in a hot-mix plant
and used for construction of highway, parking lot, or airfield pavements capable of
supporting high traffic load volumes and axle loads.
Automatic Screed Controls - ANSWERSA system that overrides the self-leveling action
of the asphalt paver screed and enables paving to a predetermined grade and slope,
using either a rigid or a
mobile type reference.
Baghouse - ANSWERSFilter system at an asphalt plant to capture fine dust particles.
Batch - ANSWERSAmount of concrete produced in one mixing operation.
Belt feeder - ANSWERSA feeder that is used for smaller sizes of material, usually sand
or small-diameter aggregates.
, Binder Course - ANSWERSA layer of asphalt mix placed between the base and the
surface courses in the pavement structure.
Binder - ANSWERSThe asphalt cement material in a paving mix used to bind the
aggregate particles together, to prevent the entrance of moisture, and to act as a
cushioning agent.
Breakdown - ANSWERSThe initial compaction of the asphalt mix that takes place
directly behind the paver and is intended to achieve maximum density in the shortest
time frame.
Contraction Joints - ANSWERSJoints for the purpose of regulating cracking from the
unavoidable and unpredictable contraction of concrete.
Cross-slope - ANSWERSThe transverse inclination of a road way or other surface.
Dwell Time - ANSWERSThe time required for material to pass through a dryer or
mixture.
Expansion Joints - ANSWERSSeparations between adjoining parts of a concrete
structure.
Flexible Pavement - ANSWERSThey have a ride surface constructed with a
combination of asphalt cement and aggregates.
Flights - ANSWERSMetal plates of various shapes placed longitudinally inside the shell
of a drum dryer or mixture. As the material moves through the drum, the flight first lift
the aggregate and then
tumble it through the hot gases.
Formed - ANSWERSWhere the paving machine rides on steel forms that are set to the
proper line and grade for the finished slab.
Freefall Mixer - ANSWERSBlends concrete by lifting the ingredients with the aid of fixed
blades inside a rotating drum and then dropping the material by overcoming the friction
between the mixture
and the blades.
Frequency - ANSWERSThe number of vibrations per unit time (commonly minutes)
Friction course - ANSWERSThe top surface layer of an asphalt pavement, usually less
than 1 in. thick, to improve skid resistance and smoothness.
Grade or string line - ANSWERSA wire or string erected at a specified grade and
alignment that is used as a reference for an automatic control system on a paver, a
milling machine, or a fine-grade machine (trimmer).
