ZHANG Xiang-dong, REN Kun. Strength and damage characteristic of cement stabilized cinder macadam base[J]. Journal of Traffic and Transportation Engineering, 2018, 18(6): 1-9. doi: 10.19818/j.cnki.1671-1637.2018.06.001
Citation: ZHANG Xiang-dong, REN Kun. Strength and damage characteristic of cement stabilized cinder macadam base[J]. Journal of Traffic and Transportation Engineering, 2018, 18(6): 1-9. doi: 10.19818/j.cnki.1671-1637.2018.06.001

Strength and damage characteristic of cement stabilized cinder macadam base

doi: 10.19818/j.cnki.1671-1637.2018.06.001
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  • Author Bio:

    ZHANG Xiang-dong(1962-), male, professor, PhD, jwd101@126.com

  • Corresponding author: REN Kun(1988-), male, doctoralstudent, 568610013@qq.com
  • Received Date: 2018-05-31
  • Publish Date: 2018-12-25
  • In order to study the strength and damage characteristics of cement stabilized cinder macadam as a pavement base material, the optimal proportion of cement stabilized cinder macadam base under constraint conditions was obtained using the formula uniform test method.The ultrasonic wave velocity and unconfined compression strength of cement stabilized cinder macadam were tested through unconfined compression test and ultrasonic wave velocity test for different proportions, and the relationship between them was analyzed.Based on the ultrasonic wave velocity and the failure process of the specimens, the damage variable of cement stabilized cinder macadam was defined, the control threshold of damage development was proposed, and the constitutive relationship of cement stabilized cinder macadam base filler under unconfined compression was established.Analysis result shows that cement has a positive effect on the strength of the base material, while cinder has a negative effect on the strength of the material.The optimum proportion of cement stabilized cindermacadam is 5∶35∶60 (the mass ratio of cement, cinder and macadam).The strength of cement stabilized cinder macadam can reach 3.96 MPa, and it can be used as pavement base filler.As the compression strength increases, the ultrasonic wave velocity also increases, but the regularity between them is not strong.The test process can be divided into the compaction stage, elastic deformation stage, elastic-plastic deformation stage, and failure stage.Elastic deformation stage and elastic-plastic deformation stage can be distinguished by the change of ultrasonic wave velocity.The damage threshold of cement stabilized cinder macadam is determined to be 0.232 based on the ultrasonic wave velocity.The material can work with damage up to the damage threshold but cannot exceed it.

     

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