Modification of Bitumen with Recycled PET Plastics from Waste Materials oleh Yerzhan Imanbayev, Akkenzhe Bussurmanova, Yerdos Ongarbayev, Akmaral Serikbayeva, Serik Sydykov, Maxat Tabylganov, Anar Akkenzheyeva, Nurlan Izteleu, Zhansaya Mussabekova, Dauren Amangeldin, Yerbol Tileuberdi