Trr No. 1171 Asphalt Materials And Mixtures, pp. 37-43
A laboratory investigation was conducted to relate some measurable aggregate properties to the stripping propensity of a mix aggregate and asphalt cement. Several different types of aggregates were used in this study. Under certain conditions, aggregates that have a relatively high surface electrical potential and those that impart a high pH value to water in contact with their surface were found to exhibit a high susceptibility to stripping. Thses results were interpreted in terms of electrochemical properties of the aggregate surface. It was also observed that the effectiveness of some types of antistripping additives was sensitive to the asphalt aggregate mixture and precoating the aggregate improved stripping resistance considerably