Study on the Storage Stability and Rheological Property of Bio-Oil/Lignin Composite-Modified Asphalt.

Item request has been placed!

Item request cannot be made.

Processing Request

اقرأ على الانترنت اقرأ أكثر حفظ في قائمتي

المؤلفون: Guo, Guixiu¹ (AUTHOR) ; Gao, Junfeng¹ (AUTHOR) ; Jin, Dongzhao² (AUTHOR) ; Wang, Xuan³ (AUTHOR) ; Bi, Yanqiu¹ (AUTHOR); Guo, Peng³ (AUTHOR)
المصدر:
Polymers (20734360). Sep2024, Vol. 16 Issue 17, p2484. 19p.
الموضوع:
*STRAINS & stresses (Mechanics); *SCANNING electron microscopes; *HEAT storage; *RHEOLOGY; *SCANNING electron microscopy

معلومة اضافية
- نبذة مختصرة :
  The objective of this study is to investigate the storage stability and rheological property of bio-oil/lignin composite-modified asphalt. The composite-modified asphalt with different proportions of bio-oil was prepared and cured at 105 °C, 135 °C, and 165 °C for 24 h and 48 h. The storage stability of the composite-modified asphalt was evaluated based on the softening point difference, the storage stability index derived from rotational viscosity, the segregation rate based on temperature sweep, and the non-recoverable creep compliance measured through the Multiple Stress Creep Recovery test. The storage stability of bio-oil/lignin composite-modified asphalt was evaluated through testing and analysis of its infrared spectroscopy and scanning electron microscopy before and after thermal storage. The research results indicate that the maximum difference in softening point is 0.9 °C, and the calculated storage stability index is generally below 0.1. The maximum value of the segregation rate is 0.43, indicating excellent storage stability of the bio-oil/lignin composite-modified asphalt. According to the results from infrared spectroscopy, no chemical reactions occurred during the storage process of the composite-modified asphalt. The scanning electron microscope confirmed that the samples became more stable after 48 h of storage. [ABSTRACT FROM AUTHOR]