ASTM D20 − 03 Reapproved 2014 Standard Test Method for Distillation of Road Tars

ASTM D20 − 03 Reapproved 2014 Standard Test Method for Distillation of Road Tars

Scope
1.1 This test method covers the distillation of road tars.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety problems, if any, associated with its use.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use

ASTM D20 − 03 Reapproved 2014 Standard Test Method for Distillation of Road Tars

Summary of Test Method

3.1 A 100-g sample is distilled at a controlled rate from a 300-mL flask into tared receivers.

The masses of distillate fractions at a series of specified temperatures and of residue at the maximum specified temperature are determined.

If desired, the residue and distillates may be used for further testing.
Significance and Use

4.1 The distillation test separates tar into fractions according to a series of specified temperatures.

Preparation of Sample

6.1 Thoroughly stir or otherwise mix the sample immediately before removing the portion for testing, to ensure that such portion will be representative of the sample.

If warming is necessary, take care to avoid loss of volatile material