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

Table 10

t-test results on the ITSM for short-aged (Sh.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
Short-aged Wetfix Sh.A (0.4%)	66	Dry	−4.5696	0.0010	−6.1719	0.0001	−5.2214	0.0004	−8.3007	0.0000
Short-aged nano-HL Sh.A (1%)	66	Dry	−5.7853	0.0002	−8.3540	0.0000	−6.5945	0.0001	−10.1208	0.0000
Short-aged Wetfix Sh.A (0.4%)	66	Wet	−7.5811	0.0000	−4.2964	0.0016	−8.4875	0.0000	−5.5936	0.0002
Short-aged nano-HL Sh.A (1%)	66	Wet	−8.9018	0.0000	−5.3399	0.0003	−9.8697	0.0000	−9.5900	0.0000