嵌挤填充沥青混合料应力吸收层的粘结性能研究

Study on Bond Properties of Stress Absorbing Layer of Interlocking Filled Asphalt

在路面结构中,理想的橡胶沥青应力吸收层,应为撒布的碎石与其上加铺的沥青混合料级配形成一个多级空间骨架结构,以阻碍层间发生滑移。通过粘结性能试验,归纳总结出橡胶沥青应力吸收层碎石粒径与沥青层级配之间的配伍性评价指标。研究结果表明:橡胶沥青应力吸收层撒布的碎石粒径,宜选取1/3~1/2沥青混合料公称最大粒径,以使橡胶沥青应力吸收层发挥出其优异的性能优势。

The ideal rubber asphalt stress absorbing layer in pa space skeleton structure by spreading gravels and the grading of vement structure should form a multi-level asphalt mixture paved on it to prevent the occurrence of interlayer sliding. The compatibility evaluation index between the gravel size of rubber asphalt stress absorbing layer and the asphalt layer grading is summarized through bond property test. The results show gravel size of the rubber asphalt stress absorbing layer should be preferably selected 1/3 ~ 1/2 of maximum nominal size of asphalt mixture so that the rubber asphalt stress absorbing layer gives play to its superior performance advantages.