Open AccessLong-term aging performance study of asphalt with different composition
Author(s) -
Meng Xu,
Yuzhen Zhang,
Ping Zhao
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/631/1/012050
Subject(s) - asphalt , asphaltene , rheology , materials science , composite material , dynamic modulus , shear modulus , modulus , accelerated aging , composition (language) , dynamic mechanical analysis , engineering , chemical engineering , polymer , linguistics , philosophy
Thin film oven tests (TFOT), pressure aging tests (PAV) for 5 h, 10 h, 15 h, 20 h were carried out on asphalts from 6 crude oil resources. Conventional and dynamic shear rheological tests (DSR) were carried out on samples at different aging degrees, respectively to evaluate the aging performance of asphalt with different composition. The main conclusions are as follows: asphalt composition had obvious influence on the long-term aging performance, in which the asphaltene content of asphalt is negatively correlated with the long-term aging performance of asphalt. According to experimental results of aging process influence on storage modulus G', A3, A5 and A6 asphalts had worse anti-aging performance than A1, A2 and A4. Meanwhile based on test results of aging process influence on loss modulus G", A1, A2 and A4 asphalts had worse anti-aging performance than A3, A5 and A6 asphalt.