1what parameters must be put into the ignition oven before placing a sample in
1. the temperature (538+-5C)
2. Calibration Factor (binder (agg.) correction factor)
2how do you enter calibration factor on an ncat?
pressing the "Calib Factor", typing in your factor and pressing enter
3how do you set the temp?
by pressing temp and entering the JMF value then press enter
4what weights must you get before doing an asphalt content by ignition test?
1. Sample basket weight
2. sample basket + sample weight (sample split between 2 baskets)
3. sample weight (2-1)
5how far away from the basket walls does the sample need to be?
3/4"
6before putting sample basket in the oven, what should you do?
1. zero oven scale (press 0)
2. put on PPE
7when putting the sample in the oven, what must be ensured?
1. the basket is not touching the walls
2. door is shut properly
8once the sample is in the oven, what initiates the oven?
pressing the "START/STOP" button
9what is the difference between using an oven scale and external scale?
oven scale: automatic, prints a ticket that records info for you
external: manual, heat @ 538C for 45 min, then in 15 min intervals find the % difference until constant mass
10when burn-off is complete, what steps do you take?
1. remove and examine ticket
2. with ppe remove sample basket with fork to cool til room temp
11once your burn-off is cool, what are the final steps?
1. reweigh the basket + sample weight
2. subtract basket weight to find the burnoff sample weight
3. % oil is (Mi - Mf)/Mi *100
12once calibrated % AC is found from the burnoff, what must you do with the moisture content?
subtract moisture content from calibrated % AC