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Abstract

After the asphalt pavement patch for potholes is put into use, the interface joints around it are prone to fatigue and durability problems under the action of external factors such as the natural environment and driving load effect. In order to analyze the fatigue characteristics of the repaired interface joints under the action of external factors, the four-point bending fatigue test and pull-out test, combined with the results of orthogonal analysis, were used to determine the best bonding scheme of the repaired interface. The influence of external factors such as temperature, frequency, and strain level on the fatigue life of interface joints was analyzed. Based on the Origin software platform, the fatigue life prediction model of repaired interface joints of asphalt pavement under the action of external factors was constructed. The results show that the fatigue life of the interface joints decreases with the increase in the strain level under the optimal repair interface, but the decreasing trend of fatigue life of the interface joints is different under different load frequencies and temperatures. A higher temperature indicates a lower fatigue life of interface joints, and with the increase in temperature, the fatigue life of interface joints decreases faster. Under the same repair measures, the fatigue life of interface joints is smaller when the vehicle is running at high speed and high frequency. The fatigue life prediction model of interface joints under the comprehensive action of external factors established in this paper has high accuracy and can be used to predict the life of interface joints in similar pavement repair projects.

Publication Date

7-14-2023

DOI

10.14048/j.issn.1671-2579.2023.03.006

First Page

42

Last Page

46

Submission Date

March 2025

Reference

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