Mixture design and Performance Evaluation of Cold Asphalt Mixture Using Polymer Modified Emulsion

摘要

Cold asphalt mixture can be handled at ambient air temperature and thus is regarded as energy saving, convenient for storage, transportation and construction, and can extend the construction season. However, it is commonly used in preventative maintenance of pavement as slurry seal and Micro-surfacing, not as structural layer due to its inferior performance to Hot Asphalt Mixture (HAM). Therefore, it will produce great economic and social benefit if a new cold mix and cold laid mixture can be developed for newly built road pavement application. Proportion design of AC-13 asphalt mixture using specially developed polymer modified emulsified is carried out and the performance of high temperature, moisture susceptibility, and low-temperature crack resistance are evaluated according to HAM technical specification. The results show that each performance of the AC-13 modified emulsified asphalt mixture can meet the specification requirements, and especially perform very well in rutting resistance performance.