High and Low Temperature Properties of FT-Paraffin-Modified Bitumen

Table 1

Physical properties of the base bitumen.

Test	Method	Unit	Test results
Specific Gravity (25^°C)	ASTM D70	gr/cm^3	1.03
Flash Point (Cleveland)	ASTM D92	^°C	308
Penetration (25^°C)	ASTM D5	dmm	62
Ductility (25^°C)	ASTM D113	cm	100
Softening point	ASTM D36	^°C	49
Kinematic Viscosity (v) at 120^°C	ASTM D2170	mm^2/s	810
Kinematic Viscosity (v) at 135^°C	ASTM D2170	mm^2/s	420
Kinematic Viscosity (v) at 150^°C	ASTM D2170	mm^2/s	232
Penetration index (PI)^a	—	—	−1.12
Penetration Viscosity Number (PVN)^b	—	—	−0.56

^aPI = [1952 − 500 log(Pen₂₅) − 20 SP]/[50 log(Pen₂₅) – SP − 120].
^bPVN = [−6.387 + 1.195 log(Pen₂₅) + 1.5 log(Visco₁₃₅)]/[0.79511 − 0.1858 log(Pen₂₅)].