MODIFICATION OF OIL BITUMEN WITH POLYMER WASTE AND POLYMERS OF STYRENE-BUTADIENESTYRENE AND ELVALOY

Abstract

Since the recycling of polymer waste contributes to the purification and improvement of the environment, an integrated approach is needed to obtain modified bitumen with improved characteristics, focusing on the nature of the raw material and the choice of parameters for the residual composition and the modification process. This paper presents the results of a study of the modification of road bitumen with polymer waste with the addition of plasticizer. The formulation has been updated with the introduction of a plasticizer capable of reducing the 
temperature of brittleness. An installation was created to carry out the bitumen change process. The installation is a cylindrical steel reactor that is heated electrically, and the heating temperature is fixed by a thermostat. The mixer is connected to the reactor from above, which allows mechanical mixing of raw materials to speed up the process. The optimal polymer bitumen binder formula has improved characteristics compared to petroleum bitumen. The most optimal formula for the preparation of polymer bitumen binders with the addition of plastic waste contains 3 wt. % waste, from 1 to 3% SBS modifier (3% Plasticizer without modifier), the rest is bitumen. The advantage of 
using polymer waste is the cheapness of its production and the formation of a structure in the bitumen binder with the participation of SBS to prevent the stratification of polymer components in the bitumen composite.