Comprehensive evaluation method of semi-rigid base mixture's pavement performance

In order to decrease the evaluation indexes of semi-rigid base mixture's pavement performance and evaluate the performance rationally, a comprehensive evaluation method of pavement performance was presented based on grey correlation clustering analysis, principal component analysis and entropy weight method. The multi indexes were classed according to grey clustering analysis, each cluster was conducted according to principal component analysis, and principal components assemble was decided. The weight of each cluster was decided according to entropy weight method. The comprehensive index was decided to reflect all the indexes' informations and differences. The cement stabilized sandstone mixture's pavement performances of 5 samples as A, B, C, D, E were tested, which were sampled from Sichuan Guangba Expressway. The eleven performance indexes were chosen to evaluate the mixture's performance. Evaluation result shows that the order from superior to inferior of pavement perfromances is as follows A, B, D, C, E, and the result is consistent with the evalutation result of grey correlation degree, so the comprehensive evaluation method is easier to differentiate the mixtures' performances.