Affecting factors analysis of the interface adhesion strength between ice and asphalt-base materials
Road icing poses great safety hazards to vehicles.In this study,a high-precision tensile ice-ad-hesion strength testing method was used to measure the interfacial ice-adhesion strength of asphalt mastic and mi-cro-surface,and the effects of freezing time,water content,and environmental temperature on ice-adhesion strength were analyzed.The results showed that with the increase of freezing time,the ice-adhesion strength of as-phalt mastic and micro-surface rapidly increased from 56 kPa and 75 kPa and 83 kPa and 323 kPa at 3 hours,re-spectively,reaching thermal equilibrium after 3 hours.With the increase of ice formation water content,the ice-adhesion strength first increased and then decreased,reaching peak values at 1.5 g and 5.0 g water content for as-phalt mastic and micro-surface,respectively.The ice-adhesion strength exhibited a logarithmic growth relation-ship with temperature.As the temperature decreased from-1℃ to-10℃,the ice-adhesion strength of asphalt mastic increased from 18 kPa to 179 kPa,while the ice-adhesion strength of the asphalt micro-surface increased from 34 kPa to 618 kPa.By analyzing the influencing factors of ice-adhesion strength in asphalt materials,this study provides references for further research on the ice-adhesion phenomenon of asphalt road surfaces.
万方数据
维普
