ABSTRACT

The criteria for judging the acceptability of results (repeatability and reproducibility) are determined from the results of the interlaboratory comparative tests using this procedure and taking as a basis the results of the determination of the recovered bitumen penetration following RILEM Recommendation BM-4 (1984):

Fig. 1 Rotary distillation apparatus. (1) Rotary mechanism; (2) heating oil bath; (3) distillation flask; (4) receiver flask; (5) condenser; (6) water pump; (7) pressure regulator; (8) manometer; (9) binder solution.