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通过采用钻芯和注浆开挖等方法对沥青路面结构层层间粘结现状进行调查,发现路面结构层层间非连续现象普遍存在,有病害位置层间粘结状况明显较无病害位置差,这在面层-基层层间与基层-底基层层间尤为明显。提出采用FWD弯沉盆参数对沥青路面结构层层间粘结状况进行评价,通过数值计算发现弯沉盆参数F1/F2值与路面面层-基层层间摩擦系数具有良好的相关关系,并采用数理统计的方法得到路面面层-基层层间粘结状况的评价标准。
Through the use of drilling and grouting excavation and other methods of asphalt pavement structural layer of the current status of the bond was investigated and found that the pavement structure layer between the non-continuous phenomenon of widespread, there is a significant difference between the location of disease adhesion sites disease-free position , Which is especially evident in the surface-grass-roots and grass-roots layers. It is proposed that FWD deflection basin parameters are used to evaluate the bonding between layers of asphalt pavement structure. Numerical calculation shows that there is a good correlation between F1 / F2 values of deflection basin parameters and the friction coefficient between pavement surface and grass-roots level, Mathematical statistics method to get the surface layer - grass-roots bonding status assessment criteria.