排水性沥青路面预防性养护时机判断研究

Study on the Judgment of Preventive Maintenance Opportunity of Drainage Asphalt Pavement

排水性沥青路面因具有良好的排水、降噪和抗滑等性能而备受青睐,但因其大空隙的特点,导致其空隙容易堵塞。为保持排水沥青路面良好的使用性能,需对排水沥青路面进行预防性养护。通过对国内外的预养护决策方法和指标进行调研,借鉴路面综合评价指标(PQI)的算法,并针对排水性沥青路面的病害类型及占比,提出了基于室内试验的排水沥青路面病害综合评价指标(DDI),来判定分析预防性养护的时机,为我国排水性沥青路面的预防性养护技术提供参考。

The drainage asphalt pavement is favored because of its good drainage,noise reduction and skid resistance.However,the large voids in the drainage asphalt pavement can be easily blocked.To maintain good performance of drainage asphalt pavement,preventive maintenance should be carried out.Based on the domestic and abroad research on the decision-making methods and indexes of pre-maintenance,and by using the algorithm of Pavement Quality Index(PQI)for reference,this paper puts forward the Comprehensive Evaluation Index(DDI)of drainage asphalt pavement disease based on indoor test to judge and analyze the preventive maintenance time according to the disease types and proportion of drainage asphalt pavement,which provides a reference for the preventive technology of drainage asphalt pavement.