NC Highway Contractor Prep Study
Guide
Hydrated lime is sometimes delivered to the combination at a fee of ___ and ___ percentage
through weight of mixture.
1-2%
Hydrated lime can be brought in certainly one of two exceptional bureaucracy that are:
Dry powder or as a slurry
If a slurry is used, it's far commonly proportioned as:
1 component hydrated lime to a few elements water
Ideally, each cold bin glide fee ought to be checked at quotes about:
20%, 50%, and eighty% operational go with the flow rate
The material in asphalt plant storage tanks typically are saved at temperatures of:
three hundred to 350 ranges
The moisture content of aggregate exiting the dryer ought to be less than ____ and preferably
much less than ____.
0.Five%, ideally less than 0.2%
Desired discharge temperature of the dryer is:
290 stages and 325 ranges
A material transfer vehicle (MTV) can maintain as much as ____ tons of material.
35
What stays in touch with the asphalt dump vans whilst paving?
Push rollers
, For a paver now not ready with automated screed controls, there is normally a ____ ratio
between the motion of the tow points and the angle of the screed.
1:eight
When setting a paving operation on preserve until the next truck arrives:
Leave the hopper as complete as possible
The most efficient manner to compact a longitudinal joint is to overlap the curler ____ inches
onto the bloodless mat.
6
A main purpose of ripples or waves is a:
Fluctuating head of material in the front of the paver screeds.
What is an have an effect on of a risky HMA mix?
Shoving and rutting
What form of asphalt roller can accomplish all 3 rolling steps?
Smooth drum vibratory steel wheel rollers
What are the three rolling steps in asphalt paving?
Breakdown, intermediate and finish rolling
What is the first-rate way to growth the strength consistent with blow with a drop hammer?
Increase hammer weight and reduce drop peak.
What size hammer is recommended for a 50-foot concrete pile weighing four hundred kilos per
linear foot driven via compacted sand for full depth penetration?
30,000 kilos according to blow
Why is hydrated lime delivered to a warm asphalt blend?
Reduce the incidence of moisture harm within the blend.
Guide
Hydrated lime is sometimes delivered to the combination at a fee of ___ and ___ percentage
through weight of mixture.
1-2%
Hydrated lime can be brought in certainly one of two exceptional bureaucracy that are:
Dry powder or as a slurry
If a slurry is used, it's far commonly proportioned as:
1 component hydrated lime to a few elements water
Ideally, each cold bin glide fee ought to be checked at quotes about:
20%, 50%, and eighty% operational go with the flow rate
The material in asphalt plant storage tanks typically are saved at temperatures of:
three hundred to 350 ranges
The moisture content of aggregate exiting the dryer ought to be less than ____ and preferably
much less than ____.
0.Five%, ideally less than 0.2%
Desired discharge temperature of the dryer is:
290 stages and 325 ranges
A material transfer vehicle (MTV) can maintain as much as ____ tons of material.
35
What stays in touch with the asphalt dump vans whilst paving?
Push rollers
, For a paver now not ready with automated screed controls, there is normally a ____ ratio
between the motion of the tow points and the angle of the screed.
1:eight
When setting a paving operation on preserve until the next truck arrives:
Leave the hopper as complete as possible
The most efficient manner to compact a longitudinal joint is to overlap the curler ____ inches
onto the bloodless mat.
6
A main purpose of ripples or waves is a:
Fluctuating head of material in the front of the paver screeds.
What is an have an effect on of a risky HMA mix?
Shoving and rutting
What form of asphalt roller can accomplish all 3 rolling steps?
Smooth drum vibratory steel wheel rollers
What are the three rolling steps in asphalt paving?
Breakdown, intermediate and finish rolling
What is the first-rate way to growth the strength consistent with blow with a drop hammer?
Increase hammer weight and reduce drop peak.
What size hammer is recommended for a 50-foot concrete pile weighing four hundred kilos per
linear foot driven via compacted sand for full depth penetration?
30,000 kilos according to blow
Why is hydrated lime delivered to a warm asphalt blend?
Reduce the incidence of moisture harm within the blend.
