Study On The Melting Efficiency Of Road Snow Melting Agent And The Law Of Secondary Icing

In China's winter,ice and snow weather has become the ordinary state in northern cities,snow and ice on the road have seriously affected the transportation and travel safety.There are many advantages to using a snowmelt agent,snowmelt agents are widely used.People have not paid enough attention to the optimization of snow melting agent,it is easy to cause the waste and failure of snowmelt agent.In addition,during the use of snow melting agent,secondary icing can easily occur on the road surface,will pose a threat to road safety,it didn't get much attention.For this reason,this paper will take the melting ice efficiency and the secondary freezing law of the snow melting agent solution as the main body to study.It provides a theoretical basis for the optimization of snow melting agent,it provides a reference for the influence of the ice-melting agent solution on the anti-skid performance of the road.Through the analysis and verification of the traditional snowmelt performance test method,it is found that the traditional snowmelt performance test method has defects and deficiencies.Taking into account the contact area,dumping time,and amount of snow melting agent used,the experimental method of melting ice efficiency is given and the test method is validated.Using the ice melting efficiency test method,the factors affecting the ice melting efficiency of snow melting agent were investigated.The analysis found that,the main factors affecting the melting efficiency include ambient temperature,dissolution rate and melting time.The phenomenon of Secondary icing occurs during the use of a snow melt,the secondary freezing process of snow melt agent solution was studied and analyzed,it mainly includes the characteristics of the secondary freezing state of the snow melting agent solution and the change rule of the residual solution.The differences in the freezing state of the snow melt agent solution were described by the strength,the strength changes of ice samples in different conditions were investigated,that's the secondary freezing strength.The influence of secondary icing strength on road skid resistance was considered,to explore the attenuation degree of secondary icing on the anti-skid performance of road during the application of snow melting agent solution,expressed in terms of anti-slip attenuation.