Modification Mechanism and Technical Performance of Recycled PE-Modified Asphalt

Waste plastic pollution is a serious issue. In order to adhere the concept of green development and rationally dispose polyethylene waste products, (PE)-modified asphalt was prepared using recycled (RPE) low-density (LDPE) as raw materials. The chemical structures RPE- LDPE-modified were studied Fourier transform infrared spectrometer (FTIR), dispersion RPE fluorescence microscope (FM). Subsequently, modification mechanism PE-modified revealed. physical properties high- low-temperature rheological characteristics examined property tests, dynamic shear rheometer (DSR), bending beam (BBR). creep performance analyzed multiple-stress recovery (MSCR). addition, laboratory-made inexpensive inorganic stabilizer added enhance storability asphalt. results show that PE are similarly compatible form an S-C bond with stabilizer. resulting product’s storage stability enhanced via cross linking between subsequent formation network structure. segregation softening point increased from 2 °C 45 increase in content, more obvious than LDPE. high-temperature failure 2–6% RPE-modified can reach 70 °C, while 8% 76 °C. Low-temperature reduced slightly: PE-doping temperature −14.7 somewhat reduced, but it still within PG rating.