Material Composition And Performance Evaluation Of High Performance Cold Patch Asphalt Mixture

It is easy for us to use Cold Patch Asphalt Mixture to repair the damage of road surfacein a timely manner. And the application of Cold Patch Asphalt Mixture is not subject toseasonal weather. It symbolizes a great progress of road maintenance technology and getsincreasing attention of road maintenance department. However, there is no uniform matureroad performance test method and evaluation index, leading to uneven quality of cold patchproduct in the market. The common problems of low initial strength, poor water stabilityperformance and short service life have restricted the application of Cold Patch AsphaltMixture seriously.In view of the above problems, this article is an anaysis of the influencial factors to theformation of its strength from the point of view of mechanism of strength. Making us of thedomestic and abroad evaluation method about the Cold Patch Asphalt Mixture for reference,we have chosen three typical kinds of Cold Patch Asphalt Mixture to do test. Based on the test,we put forward the evaluation method for Cold Patch Asphalt Mixture constituted by the workof low-temperature, initial strength, formed strength, water stability. According to the designtheory of the coating in the plastic industry and the characteristics of Cold Patch AsphaltMixture, we choose the thickening agent, modifier, anti-stripping agent for the improvementof Cold Patch Asphalt. In addition, to develop high performance of Cold Patch AsphaltMixture, we use certain method to evaluate its performance and analysis, select itsimprovement, concluding the best suitable additives amount. Through experiment andcomparison with typical Cold Patch Asphalt Mixture on the market suggests that theindependent development of Cold Patch Asphalt Mixture performance is superior, is suitablefor promotion.In view of the complicated steps, huge workload, the mix design method of hotmix asphalt mixture is not suitable for daily road maintenance, especially the emergencyrepair. This paper presents simple and practical method of mix design which is suitable forCold Patch Asphalt Mixture and presents the construction technology and matters of attentionof Cold Patch Asphalt Mixture.