Establishment of an Evaluation Model for Asphalt Pavement Preventive Maintenance Based on Improved EW-AHP

The evaluation methods for asphalt pavement preventive maintenance both local and abroad are investigated in this study. A comprehensive evaluation model that combines the evaluation index of pavement and material performance in domestic technical specifications and that considers the lack of weight allocation method for evaluation indices is proposed for the preventive maintenance of asphalt pavement. On the basis of the combination of practical engineering experiences, the expert scoring method, and experimental testing data, the model utilizes a new method, i.e., the improved entropy weight-analytic hierarchy process, to calculate the comprehensive weight coefficients of various evaluation indices and to evaluate the effect of preventive maintenance. The preventive maintenance engineering of highway asphalt pavement in Zhangjiakou is used as an example. Results show that the model is feasible. Moreover, the results can provide technical support for the application of preventive maintenance measures to asphalt pavement.