A Fuzzy Evaluation Method on Self-healing Capability of Asphalt Mixtures

摘要

In order to evaluate the self-healing capability of asphalt mixtures, this paper puts forward a fuzzy evaluation method for self-healing of asphalt mixtures, on the basis of a comprehensive study on the influence factors of self-healing capability. Firstly, the paper selected 18 judgment indicators, and established a numerical method to describe these indicators. 4 types of subordinate functions with 16 mathematical expressions were set up to describe the continuous indicators, and empirical methods were used to deal with dispersion indicators. Then, the paper adopted an expert-giving-marks method to define the weight coefficients of these judgment indicators. A fuzzy evaluation model was set up, and 2 types of evaluation principles, successive evaluation and common evaluation principles, were proposed. The analysis results of an engineering example using the proposed method verify the feasibility and effectiveness of the fuzzy evaluation method for self-healing capability of asphalt mixtures.