Evaluation method for ice and snow melting effect of slow-release active ice and snow melting asphalt pavement

Abstract

An ice and snow melting effect evaluation method for a sustained release type asphalt pavement capable of initiative ice and snow melting is disclosed. The method includes (1) a step of preparing testpieces, with a contrast group being an asphalt material, and Marshall test pieces in a test group being a material mixture of the asphalt material of the contrast group and a sustained release type ice and snow melting agent; (2) a step of sealing the Marshall test pieces with a waterproof material, leaving the top surfaces of the Marshall test pieces unsealed; (3) a step of connecting drawing heads to the top surfaces of the Marshall test pieces in a manner of freezing water to form ice; and (4) a step of performing a drawing test and calculating the a ratio [beta] of drawing strength average values of the Marshall test pieces in the test group and the contrast group, with the ratio [beta] being adopted as an ice and snow melting coefficient, thus determining the ice and snow melting effect of the sustained release type asphalt pavement. The method combines actual pavement use situations, and experiment conditions of the method conform to actual pavement situations, and the ice and snow melting capability of the pavement capable of ice and snow melting is reflected simply and conveniently, thus accurately evaluating the ice and snow melting effect.

Description

technical field [0001] The invention discloses a road material performance evaluation method, in particular to an ice and snow melting effect evaluation method of a slow-release active ice and snow melting asphalt pavement, which is used for evaluating and judging the ice and snow melting effect of the slow release active ice and snow melting asphalt pavement. Background technique [0002] my country has a vast territory, and there is a large difference in climate between the north and the south. In addition, the frequency of extreme climates in various places has increased in recent years, and the problem of snow and ice on roads is more common. Especially in the early winter and early spring seasons, under the effect of temperature changes and vehicle loads on the snow on the pavement, thin ice is easily formed on the pavement surface. Road icing will have a serious impact on traffic safety, road network capacity, road asset management, social stability and economic develo...

AI Technical Summary

Problems solved by technology

[0009] This method does not consider the influence of temperature and solution concentration on the amount of salt analysis of the test piece. The salt analysis is inconsistent with the actual situation. At the same time, the slow-release pavement does not completely melt the snow on the pavement surface, but only melts the snow that is in contact with the pavement. Therefore, when the snowfall is large, the target value of the determined salt analysis output is quite different from the actual value

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