ASTM D402 Method for Distillation of Cut-Back Asphaltic (Bituminous) Products
3. Summary of Method
3.1 Two hundred millilitres of the sample are distilled in a 500-mL flask, at a controlled rate, to a temperature in the liquid of 360°C (680°F), and the volumes of distillate obtained at specified temperatures are measured. The residue from the distillation, and also the distillate, may be tested as required.
4. Significance and Use
4.1 This procedure measures the amount of the more volatile constituents in cut-back asphaltic products. The properties of the residue after distillation are not necessarily characteristic of the bitumen used in the original mixture, nor of the residue which may be left at any particular time after field application of the cut-back asphaltic product. The presence of silicone in the cut-back may affect the distillation residue by retarding the loss of volatile material after the residue has been poured into the residue container.
