Determining Asphalt Content

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1
What does AC stand for?
Asphalt content (% oil)
2
how often do you need to run a 1 minute stability test for the nuke gauge?
3 months or less
3
what is considered a 1 minute stability test for nuke gauges?
1 minute is 20 counts
4
what needs to be done with the nuke gauge daily or when conditions change?
a 16 min background daily
5
what % does the background count need to be compared to the previous background test?
within 1%
6
if current and previous background count isn't within 1%, what is needed?
run more tests until 2 background counts are within 1% of eachother
7
where does the sample pan need to be in the beginning?
on the scale with it being tared to 0g
8
how many attempts do you get to lift the sample in the pan?
2 lifts
9
when do you take the weight of the sample?
1 after placing sample in the pan on the tared scale
2 after using the leveling plate to level the mix (reweigh to ensure no greater loss than 5g)
10
what is the error you have whenever weighing out the sample?
the mass that the JMF (Job Mix Formula) lists +/- 5g
11
after the sample is level and within error of the JMF, what is the final step?
1 place sample pan under nuke gauge
2 press start for a 16 min test count
12
where do you get your results after the AC test?
results are printed or in the computer
13
when reporting, what must you subtract from the AC value?
moisture content
14
what % do your round to when reporting actual AC (AC-moisture)
0.1% (0.001 on calculator)
15
what 3 items must be recorded from the nuke gauge?
Background Count, Test count and actual %AC
16
where do you write your 3 recordings from the nuke gauge?
on daily plant inspectors report/diary
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