Application Research and Engineering Practice on the Terminal Blend Rubberized Asphalt in Pavement

摘要

A new asphalt rubber,named terminal blend rubberized asphalt,which has high storage stability and viscosity was studied.The laboratory research showed that the terminal blend rubberized asphalt can be applied into some various asphalt mixtures of pavement layers,steel deck pavement and overlay instead of SBS modified asphalt.It is similar to SBS modified asphalt in terms of moisture stability,low-temperature performance and anti-fatigue performance.But in high-temperature performance,the former was generally better than the latter.Economics analysis showed that the terminal blend rubberized asphalt exhibited outstanding economic benefit.So it is an ideal material for pavement with low cost and good performance.On the basis of laboratory research,the performance of the terminal blend rubberized asphalt proved to be outstanding via engineering practice.However,the long term performances need further observation.