橡胶沥青SAMI加铺阻裂层的性能研究

Study on Performance of Rubber Asphalt SAMI Crack Resistance Layer

在半刚性基层与沥青面层间铺设橡胶沥青SAMI应力吸收层可以起到粘结和防水作用,其撒布的碎石与热拌沥青混合料形成相互嵌挤,能提高层间粘结能力和抗剪强度。又因橡胶沥青吸收层弹性恢复好、粘度大、具有优良的抗疲劳性能,所以能起到应力过渡和裂缝缓冲作用,可吸收或缓冲裂缝尖端的应力集中,对于抑制反射裂缝的产生和扩散具有一定的效果。

Laying rubber asphalt SAMI stress-absorbing layer between semi-rigid base and asphalt surface can play a role in bonding and waterproof, the gravel and hot mix asphalt can mutual embedded squeeze to improve the capacity of interlayer＇s bonding and shear strength. Absorbing layer of asphalt has good elastic, big viscosity and excellent anti-fatigue propertie＇s, so it can play a role in the transition and cracks in the buffer, and can absorb or buffer the stress concentration of crack tip. It has a certain effect for inhibiting emerge and spread of cracks.