关键词: 道路工程, 冷补料, 黏附性能, 评价研究

Abstract: Aiming at the problem of the lack of quantitative analysis of the adhesiveness of cold patched asphalt mixture, and the insufficient qualitative analysis of boiling method, the method of freezing and thawing cycle of cold patch asphalt mixture was used to quantitatively evaluate the adhesion of cold patch asphalt mixture, which took the ratio of asphalt entrapment before and after freezing and thawing as the evaluation index. The research results show that the proposed adhesion evaluation index is in good agreement with the evaluation standard of adhesion grade of standard method to a great extent, which provides a basis for the selection of cold patch fluid.The three types of cold patch asphalt mixture used in the test, that is J, K and L,can improve the adhesion performance between the cold patch fluid and the aggregate,and the adhesion performance is in the order of type J> type K> type L.The entrapment ratio Pused as a quantitative evaluation index greatly increases the objectivity of the test results and provides a basis for the selection of cold patch fluid.

Key words: highway engineering, cold patch asphalt mixture, adhesive property, evaluation study