Lai Shuo-Rong, Li Shu-Jun, Xu Yong-Li, Xu Wen-Yuan, Zhang Xian-Quan
Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Northeast Forestry University, Harbin 150040, China.
College of Civil Engineering, Northeast Forestry University, Harbin 150040, China.
Polymers (Basel). 2022 Apr 21;14(9):1683. doi: 10.3390/polym14091683.
The study aims to analyze the feasibility of proposing waste cooking oil and industrial waste furfural residue as raw materials to prepare bio-asphalt as partial substitutes for petroleum asphalt, so as to reduce the cost of pavement construction and decrease the consumption of non-renewable resources. In this study, 90# petroleum asphalt was partially substituted with the bio-asphalt in different proportions to prepare biomass-modified petroleum asphalt, the performance of which was first evaluated based on three indices: penetration, softening point, and ductility. Comparison of the crystal structures of the bio-asphalt and furfural residue were enabled by X-ray diffraction, and the blending mechanism and microscopic morphologies of the biomass-substituted asphalt mixtures were characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The results showed that the bio-asphalt was hydrophobic and exhibited excellent compatibility with 90# petroleum asphalt. The partial substitution of petroleum asphalt with bio-asphalt improved the low-temperature crack resistance of the asphalt by adversely affecting the high-temperature stability of the asphalt; however, when the bio-asphalt content was 8 wt.%, the performance parameters of the biomass-modified asphalt met the requirements of the 90# petroleum asphalt standard.
本研究旨在分析提出将废弃食用油和工业废渣糠醛渣作为原料制备生物沥青以部分替代石油沥青的可行性，从而降低路面建设成本并减少不可再生资源的消耗。在本研究中，用不同比例的生物沥青部分替代90#石油沥青来制备生物质改性石油沥青，其性能首先基于针入度、软化点和延度这三个指标进行评估。通过X射线衍射对生物沥青和糠醛渣的晶体结构进行比较，并通过傅里叶变换红外光谱和扫描电子显微镜对生物质替代沥青混合料的共混机理和微观形态进行表征。结果表明，生物沥青具有疏水性，与90#石油沥青表现出优异的相容性。用生物沥青部分替代石油沥青会对沥青的高温稳定性产生不利影响，但提高了沥青的低温抗裂性；然而，当生物沥青含量为8 wt.%时，生物质改性沥青的性能参数符合90#石油沥青标准的要求。
