植物基生物质油对老化沥青再生效果研究

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李宁利,冯丽平,栗培龙.植物基生物质油对老化沥青再生效果研究[J].,2023,63(3):303-312

植物基生物质油对老化沥青再生效果研究

Research about regeneration effect of plant based biomass oil on aged asphalt

DOI：10.7511/dllgxb202303010

中文关键词:道路工程再生沥青傅里叶变换红外光谱生物质油

英文关键词:road engineering recycled asphalt FTIR biomass oil

基金项目:天津市科技计划项目(18JCTPJC55800)；长安大学重点科研平台开放基金资助项目(300102210510).

作者	单位
李宁利,冯丽平,栗培龙

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中文摘要:

为了探究生物质油作为再生剂的可行性，研究不同种类生物质油对老化沥青的再生效果．通过沥青三大指标试验和布氏旋转黏度试验对生物质油再生沥青的物理性能进行评价；通过傅里叶变换红外光谱试验分析不同种类生物质油的官能团结构，探究生物质油再生效果存在差异性的原因．结果表明：老化沥青中掺入10%的生物质油能有效改善其物理性能，提高针入度与延度，降低软化点与黏度．不同种类生物质油对老化沥青的再生效果不同，蓖麻类和果木类生物质油的再生效果最好，稻壳类和毛竹类生物质油次之，棉籽类生物质油的再生效果最差．红外光谱试验表明5种生物质油含有相同的官能团结构，蓖麻类和果木类生物质油含有较多的芳香族化合物，芳香族化合物的强度影响再生效果．5种生物质油对70#老化沥青的推荐掺量应控制在10%以下；对于90#老化沥青，蓖麻类与果木类生物质油的掺量应控制在10%以下，稻壳类、棉籽类与毛竹类生物质油的掺量需提高．

英文摘要:

To explore the feasibility of using biomass oil as a regenerating agent, the regeneration effect of different kinds of biomass oils on aged asphalt is studied. Firstly, the physical properties of biomass oil recycled asphalt are evaluated by three main indexes test and Brinell rotational viscosity test. Then, Fourier transform infrared spectroscopy is used to analyze the functional group structure of different kinds of biomass oils and explore the reason for the difference in the regeneration effect of biomass oil. The results indicate that adding 10% biomass oil into the aged asphalt can effectively improve its physical properties, improve the penetration and ductility, and reduce the softening point and viscosity. Different kinds of biomass oils have diverse regeneration effects on aged asphalt. The regeneration effects of castor and fruit tree biomass oils are the best, followed by rice hull and bamboo biomass oils, and cottonseed biomass oil is the worst. Infrared spectroscopy shows that the five kinds of biomass oils have the same functional group structure. Castor and fruit tree biomass oils contain more aromatic compounds, and the intensity of aromatic compounds affects the regeneration effect. The recommended dosage of five kinds of biomass oils to 70# aged asphalt should be controlled within 10%. For 90# aged asphalt, the mixing amount of castor and fruit tree biomass oils should be controlled within 10%, and the mixing amount of rice hull, cottonseed and bamboo biomass oils should be increased.

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植物基生物质油对老化沥青再生效果研究

本站小编 Free考研考试/2024-01-16

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