Research Article

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

Table 3

Surface free energy characteristics of probe liquids.

Types of probe liquidNonpolar component (ergs/cm2)Basic component (ergs/cm2)Acidic component (ergs/cm2)Polar component (ergs/cm2)Total SFE (ergs/cm2)

Distilled water21.825.525.551.072.8
Ethylene glycol29.01.9247.019.048.0
Methylene iodide150.80.00.00.050.8

1Also known as diiodomethane.