Evaluating the Surface Free Energy and Moisture Sensitivity of Warm Mix Asphalt Binders Using Dynamic Contact Angle

Table 7

SFE components of asphalt binders (advancing contact angle).

Binders	Cecabase additive %	Aging	Nonpolar component (ergs/cm^2)	Basic component (ergs/cm^2)	Acidic component (ergs/cm^2)	Polar component (ergs/cm^2)	Total SFE (ergs/cm^2)
PG-64	0.0	Unaged	17.84	1.177	1.50	2.66	20.50
		RTFO	18.41	1.182	1.70	2.83	21.24
		PAV	16.83	0.551	2.16	2.18	19.01
	0.2	Unaged	17.40	0.787	1.84	2.41	19.80
		RTFO	17.93	0.629	2.12	2.31	20.24
		PAV	15.59	0.250	2.29	1.51	17.10
	0.3	Unaged	16.16	0.824	2.39	2.81	18.97
		RTFO	16.70	0.944	2.47	3.05	19.75
		PAV	15.18	0.845	2.35	2.82	18.00
	0.4	Unaged	15.18	0.415	3.08	2.26	17.44
		RTFO	16.47	0.819	2.35	2.78	19.25
		PAV	15.49	0.710	2.37	2.59	18.09
PG-76	0.0	Unaged	17.11	0.876	1.67	2.42	19.53
		RTFO	16.82	1.044	1.99	2.88	19.70
		PAV	15.87	0.668	1.80	2.19	18.06
	0.2	Unaged	16.57	0.699	1.64	2.14	18.71
		RTFO	17.79	0.904	1.69	2.47	20.26
		PAV	14.08	1.031	1.71	2.66	16.73
	0.3	Unaged	16.38	0.347	2.14	1.72	18.10
		RTFO	17.09	1.096	1.57	2.62	19.71
		PAV	13.72	0.479	2.45	2.17	15.88
	0.4	Unaged	16.97	0.279	1.82	1.43	18.40
		RTFO	17.92	0.716	1.66	2.18	20.10
		PAV	14.66	0.318	1.82	1.52	16.18