The Effect of Wetfix and Nanohydrated Lime Additives on Bitumen Aging and the Cohesion and Adhesion Failure Mechanisms of Hot Asphalt Mixtures

Table 11

t-test results on the ITSM for long-aged (L.A) condition.

Variable	Obs.	State	PG64-16, limestone		PG58-22, limestone		PG64-16, granite		PG58-22, granite
			t	P-value	t	P-value	t	P-value	t	P-value
Long-aged Wetfix L.A (0.4%)	66	Dry	−16.3220	0.0000	−10.0798	0.0000	1.0050	0.3386	4.5463	0.0011
Long-aged nano-HL L.A (1%)	66	Dry	−8.5440	0.0000	−9.8315	0.0000	3.3657	0.0072	−1.7368	0.0000
Long-aged Wetfix L.A (0.4%)	66	Wet	−16.0294	0.0000	−8.7112	0.0002	−3.5700	0.0000	−1.3223	0.0000
Long-aged nano-HL L.A (1%)	66	Wet	−13.6899	0.0002	−9.2630	0.0000	−5.7094	0.0002	−2.8884	0.0162