| 摘要: |
| 为了提高融雪沥青路面的整体性能，对盐化物材料中蓄盐载体的选择及最优配合比进行了研究.通过比表面积、电导率测试及扫描电子显微镜（SEM），比较了不同蓄盐载体对融雪盐的承载性能和缓释性能；通过扭转试验、电导率试验和冻融劈裂试验，评价了不同融雪盐与蓄盐载体配合比条件下盐化物材料的融雪性能与水稳定性能.结果表明：大部分融雪盐吸附在蓄盐载体表面，仅有少部分融雪盐存储在蓄盐载体的孔隙之中；蓄盐载体对融雪盐的缓释效果影响不大，掺入表面改性剂可以有效调节材料的缓释性能；盐化物材料中融雪盐与蓄盐载体的质量比越大，在一定程度上其融雪性能越好，水稳定性越差；存在融雪盐与蓄盐载体的最优配合比，能够同时保证融雪性能和路用性能的稳定. |
| 关键词: 融雪路面 盐化物材料 蓄盐载体 性能比选 最优配合比 |
| DOI：10.3969/j.issn.1007-9629.2022.03.009 |
| 分类号:U414 |
| 基金项目:“十三五”国家重点研发计划（2018YFF0300305）；国家自然科学基金资助项目（52178403） |
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| Selection and Optimal Mix Ratio of Carrier in Anti-freeze Materials |
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WU Xintong1, ZHANG Zhiqing1, ZHU Jiang2, LI Zhen3
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1.Beijing Key Laboratory of Transportation Engineering， Beijing University of Technology， Beijing 100124， China;2.Beijing General Municipal Engineering Design &Research Institute Co.， Ltd.， Beijing 100082， China;3.China Highway & Transportation Society， Beijing 100101， China
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| Abstract: |
| In order to improve the overall performance of anti-freeze asphalt pavement， the selection and the optimal mix ratio of carrier in anti-freeze materials were studied. The storage performance and slow-release performance of different carriers for the deicing chemicals were compared by specific surface area test， conductivity test and scanning electronic microscope（SEM）. Based on the torsion test， the conductivity test and the freeze-thaw splitting test， the anti-freeze performance and road performance of anti-freeze material with different ratios of deicing chemicals to carriers were evaluated. The results demonstrate that most of the deicing chemical is adsorbed on the surface of the carrier， and only a small portion is stored in the pores of the carrier. Further， the carrier itself has little effect on the slow-release performance of anti-freeze materials， incorporating surface modifiers can effectively alter the slow-release performance of anti-freeze material. The larger the ratio of deicing chemical to carriers in the anti-freeze material， the better the snow melting performance is to a certain extent， but the worse the water stability is. There is an optimal mix ratio of deicing chemical to carrier， which can ensure the stability of anti-freeze performance and road performance at the same time. |
| Key words: anti-freeze asphalt pavement anti-freeze material carrier performance comparison optimal mix ratio |
