Plain Asphalt Warm-regenerative Agent Development And Research On The Performance Of Asphalt Mixture

The technology of Warm-regenerative has the characteristics of saving energy,effectively recycling waste asphalt mixture,reducing the emission of harmful asphalt smoke,and so on.From the point of view of saving energy,protecting environment and safe construction,Although the industry more research on the temperature mixture,but the combination of warm mixing and regeneration technology to form an independent temperature of the regeneration agent with little research.Therefore,based on the technology of temperature mixing and regeneration,the development of temperature regeneration and its related performance were studied.Based on the mechanism of asphalt surface active temperature mixing and the regeneration mechanism of asphalt,this paper puts forward the mechanism of temperature regeneration for the warm mix regeneration agent:homogeneous regeneration theory.The development of ordinary waste asphalt mixture can be both warm and renewable energy-saving environment-friendly temperature mixing agent,and evaluate its common waste asphalt mixture of temperature mixing regeneration effect.The content of RA-2 regenerant was 7%of the old asphalt,and the contents of the four kinds of surface active materials were equal to those of the RA-2 regenerant And the formula was used to calculate and optimize the formula by using DPS and Lingo programming,and the best mix of WL-1 temperature mixing and regeneration agent and the corresponding blending ratio were obtained.Among them,b kinds of surface active raw materials could not be The mixture has a positive effect and is removed.Then,the asphalt binder and the recycled mixture under the optimum dosage of WL-1 were mixed,including the three indexes of asphalt binder(the ductile force test FDT),Brinell rotation Viscosity test,dynamic shear rheological test,asphalt mixture Marshall specimen basic index,high temperature stability,low temperature crack resistance and water stability,used to evaluate the temperature mixture of regenerative mixture of renewable mixture of temperature mixing effect.It was found that the temperature-mixing components in the WL-1 mixture were almost unaffected by the three indexes of the asphalt binder.The regenerated components could regenerate the waste asphalt and the regeneration effect was almost the same as that of the RA-2 regenerator.1 mixed with 28%of the mixture of WL-1,and the addition of WL-1 mixed with the regeneration agent,the RA-2 regenerant mixed with asphalt was not added to the anti-The temperature of the rutting limit is 5～6 ℃,the decline is almost the same;The performance of the warm mix and recycle mixture meets the requirements of the specification,in which the water stability of the warm-mixture is better than that of the corresponding hot mix mixture.