Fecha de publicación: 14/11/2024 Fuente: Polymers Polymers, Vol. 16, Pages 3177: The Use of Rubber-Polymer Composites in Bitumen Modification for the Disposal of Rubber and Polymer Waste
Polymers doi: 10.3390/polym16223177
Authors:
Anar Akkenzheyeva
Viktors Haritonovs
Akkenzhe Bussurmanova
Remo Merijs-Meri
Yerzhan Imanbayev
Akmaral Serikbayeva
Serik Sydykov
Yerbolat Ayapbergenov
Martynas Jankauskas
Anatolijs Trumpels
Murshida Aimova
Maira Turkmenbayeva

The use of rubber-polymer composites ELTC (End of Life Tire Compound) for bitumen modification was investigated. ELTC contains not only devulcanized rubber from used car tires, but also used plastics (polymers) such as polyethylene (PE) and polypropylene (PP). ELTC is obtained using the method of rubber devulcanization using a selective catalyst that allows selectively decomposing sulfide bonds at relatively low temperatures, while preserving most of the macromolecular chains. The characteristics of the asphalt binder improved after the modification of ELTC. After modification, the base asphalt binder became more homogeneous, and the thermal stability of the base asphalt binder increased. ELTC is evenly distributed, the compatibility between the components of the modified asphalt binder is good, which proves the uniformity of the modified asphalt binders. The results show that all ELTC formulations improve the softening temperature and increase their resistance to plastic deformation in the summer.