| 摘要: |
| 为分析有机融雪剂对沥青性能的影响及其作用机理,测定腐蚀后沥青三大指标和黏度，对比腐蚀前后沥青宏观表面特征和微观相态参数的变化，并基于Verhulst模型量化沥青腐蚀周期内针入度的变化.结果表明：有机融雪剂与沥青发生相似相溶,削弱了沥青的高、低温性能和抗老化性能;有机融雪剂腐蚀后基质沥青表面出现腐蚀孔和溶解坑,荧光显微试验表明SBS分子经浸泡腐蚀后出现明显“线性”和“块状”团聚,导致沥青微观结构参数（孔隙面积和直径）发生不同程度的改变;腐蚀后沥青针入度变化符合Verhulst模型. |
| 关键词: 有机融雪剂 沥青性能 腐蚀 荧光显微 Verhulst模型 |
| DOI：103969/j.issn.1007 9629202104020 |
| 分类号: |
| 基金项目:陕西省交通运输厅交通科技项目（16 14k）；浙江省公路与运输管理中心科技计划项目（2019H01）；陕西省高性能混凝土工程实验室2017年开放基金资助项目（SHPC201704）；衢州市科技计划项目（2019K39） |
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| Effect of Organic Snow Melting Agent on Asphalt Performance and Its Mechanism |
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ZHANG Qian1, ZHANG Xujing1, LIANG Ji2, YAN Zhao2, MU Rongfang2
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1.School of Civil Engineering, Xian University of Architecture & Technology, Xian 710055, China;2.Shaanxi Expressway Construction Group Co., Ltd., Xian 710065, China
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| Abstract: |
| To analyze the effect of organic snow melting agent on the asphalt performance and its mechanism, three indexes and viscosity of the soaked asphalt were measured. Changes and microphase parameters of the soaked asphalt in macroscopic representation were observed. Change of penetration during the corrosion cycles was quantified based on the Verhulst model. The results show that the organic snow melting agent is similar to asphalt, which weakens the high, low and anti aging properties of asphalt. Surface characteristics of the base asphalt showed visible changes such as corrosive holes and dissolution sunken. Fluorescence phases of the SBS molecules was “reunited” in linear or bulk pattern. The calculation results show that the micro pore area and diameter of the asphalt changed in varying degrees.The change of penetration conforms to the Verhulst model. |
| Key words: organic snow melting agent asphalt performance corrosion fluorescence microscopy Verhulst model |
