Evaluation of the Physical Performance and Working Mechanism of Asphalt Containing a Surfactant Warm Mix Additive

Table 7

Contact angle between asphalt and liquid.

Warm mix additives content (wt.%)	Water		Glycerol		Formamide
	Contact angle (°)	CV (%)	Contact angle (°)	CV (%)	Contact angle (°)	CV (%)
0	99.79	0.68	96.01	0.65	91.84	0.53
0.2	100.80	0.52	96.08	0.46	91.90	0.29
0.4	102.30	0.71	96.11	0.72	92.06	0.69
0.8	102.80	0.84	96.54	0.29	92.00	0.71
1.0	103.20	0.26	96.64	0.52	92.08	0.69

C_V: coefficient of variation.