沥青路面水泥改性级配碎石力学性能研究

在级配碎石中,掺入适量的无机结合料（如：水泥和石灰等）,形成改性级配碎石.研究结果表明：该改性措施可以提高级配碎石的抗剪强度和抗变形能力,用作沥青路面基层时,可继续保持级配碎石基层的抗裂与排水作用,从而增强沥青路面承载能力,延长沥青路面的使用寿命.现场检测证明,应用改性级配碎石柔性基层的沥青路面使用效果良好.

The mechanical performance of cement modified graded crushed rock applied in the basement of asphalt pavement

Graded crushed rock was mixed with a proper amount of inorganic binder(such as cement,lime,and so on) to form modified graded crused rock.The results show that this method could enhance the shear strength and resistance to deformation for the crushed rock.When this kind of crushed rocks was used as the basement of asphalt pavement,the primary function of the crack and drainage could still be maintained,thus the loading capacity of asphalt pavement can be enhanced,the life of asphalt pavement can be extended.Field testing shows good effects when modified graded crushed rock is applied as the flexible basement of asphalt pavement.