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棉籽、油茶籽壳和咖啡渣生物炭对沥青的改性：基本性能、流变性能及挥发性有机化合物排放抑制

Biochars from Cotton Seed, Camelia Seed Shell, and Coffee Ground in Modification of Asphalt: Fundamental Properties, Rheological Performance, and Inhibition of VOC Emissions.

作者信息

Zhang Xiao, Zhou Yi, Xue Yongjie

机构信息

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.

出版信息

Materials (Basel). 2025 Mar 27;18(7):1504. doi: 10.3390/ma18071504.

DOI:10.3390/ma18071504
PMID:40271676
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11989786/
Abstract

With the increasing requirement for asphalt modification, a new environmentally friendly asphalt modifier is needed. In this study, three varieties of biomass, cotton seed (CO), camelia seed shell (CA), and coffee ground (CG), were chosen for biochar preparation and asphalt modification to find an environmentally friendly asphalt modifier. A segregation test was applied to evaluate the storage stability of the modified asphalt. A dynamic shear rheometer (DSR) temperature sweep and frequency sweep were used to characterize the high-temperature performance. The low-temperature performance was evaluated by the bending beam rheometer (BBR) test. The DSR results indicate that the rutting factor increase for modified asphalt at high temperatures is CO ≈ CG > CA, and a high temperature could reflect the biochar's properties better in modified asphalt. Furthermore, the low-temperature deterioration is well controlled in CO and CA biochar-modified asphalt. Finally, the volatile organic compound (VOC) emission behavior was evaluated using gas chromatography-mass spectrometry (GC-MS).

摘要

随着对沥青改性需求的增加，需要一种新型环保型沥青改性剂。在本研究中，选择了三种生物质品种，棉籽（CO）、油茶籽壳（CA）和咖啡渣（CG），用于制备生物炭和改性沥青，以寻找一种环保型沥青改性剂。采用离析试验来评估改性沥青的储存稳定性。使用动态剪切流变仪（DSR）进行温度扫描和频率扫描来表征高温性能。通过弯曲梁流变仪（BBR）试验评估低温性能。DSR结果表明，高温下改性沥青的车辙因子增加幅度为CO≈CG>CA，高温能更好地反映生物炭在改性沥青中的性能。此外，CO和CA生物炭改性沥青的低温劣化得到了很好的控制。最后，使用气相色谱-质谱联用仪（GC-MS）评估挥发性有机化合物（VOC）的排放行为。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2d6b/11989786/3ee449ad4dbd/materials-18-01504-g014.jpg
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本文引用的文献

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Evaluation and characterization of biochar on the biogeochemical behavior of polycyclic aromatic hydrocarbons in mangrove wetlands.评价和描述生物炭对红树林湿地多环芳烃生物地球化学行为的影响。
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Study on the Conventional Performance and Microscopic Properties of PPA/SBS-Modified Bio-Mixed Asphalt.
PPA/SBS 改性生物混合沥青的常规性能及微观特性研究
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Laboratory Characterization of Asphalt Binders Modified with Styrene Butadiene Rubber (SBR).丁苯橡胶（SBR）改性沥青结合料的实验室特性研究
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