9. Calculation and Report
9.1 Asphaltic Residue - Calculate the percent residue to the nearest 0.1 as follows:
R = [(200 - TD)/200] x 100
where:
R = residue content, in volume percent, and
TD = total distillate recovered to 360°C (680°F), mL.
9.1.1 Report as the residue from distillation to 360 (680°F), percent volume by difference.
9.2 Total Distillate - Calculate the percent total distillate to the nearest 0.1 as follows:
TD % = (TD/200) x 100
9.2.1 Report as the total distillate to 360°C (680°F), volume percent.
9.3 Distillate Fractions:
9.3.1 Determine the percentages by volume of the original sample by dividing the observed volume (in millilitres) of the fraction by 2. Report to the nearest 0.1 as volume percent as follows:
Up to 190°C (374°F)
Up to 225°C (437°F)
Up to 260°C (500°F)
Up to 316°C (600°F)
9.3.2 Determine the percentages by volume of total distillate by dividing the observed volume in millilitres of the fraction by the millilitres recovered to 360°C (680°F) and multiplying by 100. Report to the nearest 0.1 as the distillate, volume percent of total distillate to 360°C (680°F) as follows:
Up to 190°C (374°F)
Up to 225°C (437°F)
Up to 260°C (500°F)
Up to 316°C (600°F)
9.4 Where penetration, viscosity, or other tests have been carried out, report with reference to this test method as well as to any other method used. Example - Penetration (ASTM D5 or IP 49) of residue from ASTM D402/IP 27.
10. Precision and Bias
10.1 The following criteria shall be used for judging the acceptability of results (95 % probability):
10.1.1 Repeatability - Duplicate values by the same operator shall not be considered suspect unless the determined percentages differ by more than 1.0 volume % of the original sample.
10.1.2 Reproducibility - The values reported by each of two laboratories, shall not be considered suspect unless the reported percentages differ by more than the following:
10.2 Criteria for judging variability of test results on the distillation residue have not been determined.
11. Keywords
11.1 cut-back asphalt; distillate; residue