Effect of Gamma-Irradiated Recycled Low-Density Polyethylene on the High- and Low-Temperature Properties of Bitumen

Table 6

The effect of γ-LDPE_R on high and low service temperatures and on performance grade (PG).

Binder types	Fails at; HT (°C)	Fails at; LT (°C)	HT (°C); improvement	LT (°C); decrement	Improvement/decrement	Performance grading (PG)
B	54.3	−28.78	—	—	—	PG 52-28
B-1-γ-LDPER	61	−26.61	6.7	2.17	4.53	PG 58-22
B-3-γ-LDPER	63.5	−24.45	9.2	4.33	4.87	PG 58-22
B-5-γ-LDPER	66.9	−22	12.6	6.78	5.82	PG 64-22
B-7-γ-LDPER	68.6	−20.5	14.3	8.28	6.02	PG 64-16
B-9-γ-LDPER	80.5	−17.95	26.2	10.83	15.37	PG 76-16