沥青膜有效厚度对沥青混合料高温稳定性的影响

首先进行原材料的检测,然后按照工地施工级配,进行一系列研究,探讨了沥青膜有效厚度对沥青混合料高温稳定性的影响.通过控制不同的油石比来控制沥青用量,以此实现沥青膜有效厚度的变化,研究了油石比与沥青膜有效厚度的关系、油石比与动稳定度的关系及沥青膜有效厚度与动稳定度的关系.试验表明：油石比与沥青膜有效厚度存在线性关系;油石比、沥青膜有效厚度与动稳定度存在三次曲线关系;根据拟合曲线得出,当沥青膜有效厚度为8.7 ～8.8μm时,沥青混合料的高温稳定性最佳,动稳定度最大.

Affect the Effective Thickness of the Asphalt Membrane Temperature Stability of Asphalt Mixture

The paper first detection of raw materials, and then graded according to the construction site, a series of studies, the effect of the effective thickness of the asphalt membrane temperature stability of asphalt mixture. By controlling the different aggregate ratio to control the amount of asphalt, bitumen membrane in order to achieve effective thickness variations, studied the relationship between aggregate ratio of the effective thickness of the asphalt membrane, Whetstone ratio with dynamic stability and the effective thickness of the asphalt film and dynamic stability relationship. Tests showed that： there is a linear relationship between the ratio of Whetstone effective film thickness and asphalt; aggregate ratio, the relationship between the presence of a cubic curve and the effective thickness of the asphalt film dynamic stability; derived from the fitted curve, when the asphalt film thickness 8. 7 - 8. 8 μm effective when asphalt the best mix of high temperature stability, dynamic stability maximum.