| 摘要: |
| 用乙烯基类硅氧烷、不饱和脂肪酸和醇类润湿剂等基础材料合成了冷补沥青添加剂,同时以柴油为稀释剂对基质沥青进行改性,设计制备了溶剂型冷补沥青（SCPA）,并根据黏度和黏附性测试确定了SCPA的配方;基于溶剂型冷补沥青混合料（SCPAM）设计及相关技术性能试验,设计评价了冷补沥青添加剂的改善效果.结果表明：SCPAM宜采用较粗的矿料级配;掺加冷补沥青添加剂后,SCPA的温度稳定性提升,与集料的黏附性明显改善,SCPAM的拉伸强度与黏聚性明显提高;建议SCPA配方为m(基质沥青)∶m(柴油)∶m(冷补沥青添加剂)=（73～77）∶（20～24）∶3,SCPAM的沥青用量为47%～50%. |
| 关键词: 道路工程 冷补沥青添加剂 黏附性 黏聚性 |
| DOI：103969/j.issn.1007 9629202005025 |
| 分类号: |
| 基金项目:山东省重点研发计划项目（2017GGX50101）；山东省高等学校青创科技计划项目（2019KJG004） |
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| Performance Evaluation of Solvent Cold Patching Asphalt and Asphalt Mixture |
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GENG Litao1, WANG Liyan1, JIANG Chengling2, ZHANG Zhe3, HAN Fangyan4
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1.School of Transportation Engineering, Shandong Jianzhu University, Jinan 250101, China;2.Qilu Transportation Development Group Co., Ltd., Jinan 250101, China;3.Qingdao Cascada Polymer Co., Ltd., Qingdao 266109, China;4.Dezhou Highway Development Center, Dezhou 253006, China
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| Abstract: |
| A cold patching asphalt additive was synthesized from vinyl siloxane, unsaturated fatty acid, alcohol wetting agent and other basic materials. The solvent cold patching asphalt(SCPA) was prepared with the additive as modifier and diesel as diluent under specific process. The formulation of SCPA was determined according to its viscosity and adhesion test results. Based on the design of (SCPAM) and related technical performance test, the improvement effect of the cold patching asphalt additive was evaluated. The results show that the coarse aggregate gradation is suitable for the SCPAM. The temperature stability of SCPA, adhesion of SCPA to aggregate, tensile strength and cohesion of SCPAM increase significantly with the addition of cold patching asphalt additive. The suggested dosage rate for preparing cold patching asphalt is m(asphalt)∶m(diluent)∶m(cold patching asphalt additive)=(73～77)∶(20～24)∶3. The optimum binder content of SCPAM is 47%50% by mass. |
| Key words: road engineering cold patching asphalt additive adhesion cohesion |
