Research On Technology Of Interlayer Bonding For Asphalt Pavement With Rigid Base

Long-life Pavement abroad are mostly full depth asphalt pavement and high cost; contrast, long-life asphalt pavement rigid base are more in line with China's national conditions. However, long-life asphalt pavement rigid base layer may appear slipping or reflective cracking and so on. With Hong You unitary test road section of Yuxiang freeway as the basis, to ensure the advantages of pavement structure, enhance the performance of the interface layer rigid-flexible; and through physical works on-site paving, research asphalt rubber stress absorbing layer (SAMI) and the construction technology of of layer interface treatment.By Finite element analysis software, calculate the specific location of maximum shear stress point of rigid long-life asphalt pavement Rigid interface, and analyzes the various factors on the rigid-flexible interface layer between the level of shear stress, received the range of the thickness and modulus of pavement structureBased on the analysis of the reflection Cracks and propagation mechanism, construct a three-dimensional model , analysis various factors on the asphalt layer bottom stress and vertical shear stress, obtain range of pavement layer thickness and modulus ,and design of the mix ratio of each layer materials.Combining with HongYou test road of Yuxiang highway, studying the rubberized asphalt rubber stress absorbing layer (SAMI) and construction technology of layer interface treatment. summed up the construction process control elements of rigid long-life asphalt pavement. analysis the cost benefit of the rigid base for long-life asphalt pavement within the life cycle , obtain that within the whole life cycle, the rigid long-life asphalt pavement is more economical than emi-rigid asphalt pavement.