山东科学 ›› 2015, Vol. 28 ›› Issue (4): 65-70.doi: 10.3976/j.issn.1002-4026.2015.04.012

• 环境与生态 • 上一篇    下一篇

全深式乳化沥青冷再生混合料的性能研究

尹晓波1,李俊晓2*   

  1. 1华润水泥控股有限公司运营部,广西 南宁 530000;2山东省海洋环境检测技术重点实验室, 山东省科学院海洋仪器仪表研究所,山东 青岛 266001
  • 收稿日期:2014-12-04 出版日期:2015-08-20 发布日期:2015-08-20
  • 作者简介:尹晓波(1987-),男,硕士,助理工程师,研究方向为道路工程材料、建筑工程材料。

Performance of emulsified asphalt full thickness cold recycling subgrade materials

YIN Xiaobo1,LI Junxiao2*   

  1. 1.Operation Department, China Resources Cement Holdings Co.Ltd., Nanning 530000, China ; 2.Shandong Provincial Key Laboratory of Ocean Environmental Monitoring Technology, Institute of Oceanographic Instrumentation,Shandong Academy of Sciences, Qingdao 266001, China
  • Received:2014-12-04 Online:2015-08-20 Published:2015-08-20

摘要: 采用水泥和乳化沥青固化回收旧沥青路面材料(RAP)和稳定土,制备全深式冷再生基层材料。研究了乳化沥青掺量的变化对不同配比混合料的无侧限抗压强度和水稳定性的影响,并结合微观测试阐述了水泥和乳化沥青在冷再生混合料中的作用机理。结果表明,适量的乳化沥青掺量对混合料的性能提高有益,最佳乳化沥青掺量为3%。微观分析表明,水泥水化产物形成的空间网络结构与沥青乳液破乳后形成的沥青网络结构相互贯穿,不可分割,把冷再生混合料紧密地结合为一个半刚性的整体,使冷再生混合料强度得以形成和发展。

关键词: 全深式冷再生, 强度, 水泥, 乳化沥青, 水稳定性

Abstract: Cement and emulsified asphalt were employed to solidify RAP and stabilized soil, which were then employed to prepare full thickness cold recycling subgrade materials.We addressed the impact of emulsified asphalt adding amount change on unconfined compressive strength, indirect tensile strength and water stability of different ratios of cold recycled mixtures.We further state the function mechanism of cement and emulsified asphalt in the mixtures via microscopic test.Results show that appropriate emulsified asphalt addition can improve the performance of cold recycled mixtures, the optimum emulsified asphalt addition of 3%.Microscopic test indicates cement hydration formed space network structure interfingers with emulsified asphalt postemulsion formed asphalt network structure,not detachable.They closely combine the cold recycled mixtures to be a semirigid whole.The strength of the cold mixtures can be formed and developed.

Key words: water stability, emulsified asphalt, full thickness cold recycling, strength, cement

中图分类号: 

  • TU528.42