A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Emulsified asphalt plant-mixed cold recycled asphalt mixture and preparation method thereof
The invention belongs to the field of road and urban road waste material recovery and regeneration, and discloses an emulsified asphalt plant-mixed cold-recycled asphalt mixture, the raw materials comprise an RAP material, and the surface recycled asphalt of the RAP material meets the following requirements: the needle penetration at 25 DEG C is greater than or equal to 17dmm, the softening point is less than or equal to 70 DEG C, the Brookfield rotational viscosity at 135 DEG C is less than or equal to 3500mPa. S, and the track factor represented by G */sin delta at 55 DEG C is less than or equal to 150kPa. Compared with the prior art, by selecting and limiting the surface recycled asphalt in the RAP material, it can be effectively guaranteed that the low-temperature cracking resistance of the cold-recycled mixture is obviously improved, meanwhile, the porosity is reduced, and important guidance is provided for reasonable utilization of the RAP material in the emulsified asphalt cold-recycled mixture.
本发明属于公路与城市道路废旧材料回收再生领域，公开了一种乳化沥青厂拌冷再生沥青混合料，其原料包括RAP料，RAP料的表面回收沥青满足如下要求：25℃针入度≥17dmm，软化点≤70℃，135℃布氏旋转黏度≤3500mPa·s，以55℃处G*/sinδ表征的车辙因子≤150kPa。与现有技术相比，本发明通过对RAP料中表面回收沥青的选择和限定，能够有效保证冷再生混合料的低温抗开裂性能有明显提升，同时减少空隙率，为RAP料在乳化沥青冷再生混合料中的合理利用提供了重要指导。
Emulsified asphalt plant-mixed cold recycled asphalt mixture and preparation method thereof
The invention belongs to the field of road and urban road waste material recovery and regeneration, and discloses an emulsified asphalt plant-mixed cold-recycled asphalt mixture, the raw materials comprise an RAP material, and the surface recycled asphalt of the RAP material meets the following requirements: the needle penetration at 25 DEG C is greater than or equal to 17dmm, the softening point is less than or equal to 70 DEG C, the Brookfield rotational viscosity at 135 DEG C is less than or equal to 3500mPa. S, and the track factor represented by G */sin delta at 55 DEG C is less than or equal to 150kPa. Compared with the prior art, by selecting and limiting the surface recycled asphalt in the RAP material, it can be effectively guaranteed that the low-temperature cracking resistance of the cold-recycled mixture is obviously improved, meanwhile, the porosity is reduced, and important guidance is provided for reasonable utilization of the RAP material in the emulsified asphalt cold-recycled mixture.
本发明属于公路与城市道路废旧材料回收再生领域，公开了一种乳化沥青厂拌冷再生沥青混合料，其原料包括RAP料，RAP料的表面回收沥青满足如下要求：25℃针入度≥17dmm，软化点≤70℃，135℃布氏旋转黏度≤3500mPa·s，以55℃处G*/sinδ表征的车辙因子≤150kPa。与现有技术相比，本发明通过对RAP料中表面回收沥青的选择和限定，能够有效保证冷再生混合料的低温抗开裂性能有明显提升，同时减少空隙率，为RAP料在乳化沥青冷再生混合料中的合理利用提供了重要指导。
Emulsified asphalt plant-mixed cold recycled asphalt mixture and preparation method thereof
一种乳化沥青厂拌冷再生沥青混合料及其制备方法
TAN HUA (author) / ZHANG HENGLONG (author) / LIU JIAQING (author) / ZHU CHONGZHENG (author) / ZHANG HONGGANG (author) / TAN ZEWEN (author) / LI RUIJIAO (author) / LIU SHUAIHENG (author) / WEI ZHOUSHUAI (author) / LI FUJIE (author)
2022-07-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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