Preparation Technology of Polyurethane-Modified Emulsified Asphalt at Room Temperature
In order to optimize the preparation process of waterborne polyurethane modified emulsified asphalt under room temperature conditions,waterborne polyurethane was used as a modifier to investigate the effects of shear time and shear rate on the performance of waterborne polyurethane modified emulsified asphalt.The three main performance indices of evaporated residues under different preparation parameters were determined by the one-factor method,and the effects of the different factors on the properties of asphalt were analyzed to determine the optimal preparation process and parameters.The results show that at room temperature,aqueous polyurethane can effectively improve the properties of matrix asphalt and the preparation conditions are simple.Waterborne polyurethane can be used as a new pavement material applied to the road construction process.
pavement materialmodified emulsified asphaltwaterborne polyurethaneshear rateshear time
万方数据
维普
