Evaluation of Sustainable Skid Resistance of Asphalt Pavement Preventive Maintenance Techniques
Long-term traffic loads and external environmental factors will cause the decline of pavement skid resistance,which will lead to traffic accidents,therefore,continuous monitoring and evaluation of pavement skid resistance is of great significance for practical maintenance.48 groups of asphalt pavement structure and friction coefficient data of 11 abrasion stages were collected through indoor tests,and each stage contained 20,000 abrasion cycles;by analyzing the decreasing trend of asphalt pavement texture and friction coefficient indexes,an asphalt pavement skid resistance deterioration model was established(R2=0.9664);rutted plate specimens after abrasion were respectively treated with simultaneous gravel 4 types of pavement maintenance techniques,namely,sealing,micro-surface treatment,thin-layer overlay,and thermal regeneration,were used to conduct 5 stages of abrasion tests.By comparing with the established pavement skid resistance deterioration model,the optimal maintenance timing under the abrasion test conditions of this study was determined to be 230,000 abrasion cycles by using the time/pavement condition analysis method,and the maintenance effects of different maintenance techniques were analyzed,and it was concluded that the SMA-5 thin-layer overlay was the most effective maintenance method.
NETL
NSTL
万方数据
