Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Basalt fiber-doped asphalt mixture with high self-healing performance
The invention provides a preparation method of a basalt fiber-doped asphalt mixture with high self-healing performance and a self-healing implementation method of the mixture. The asphalt mixture withhigh self-healing performance is prepared from the following raw materials in percentage by mass: 91.2%-94.8% of mineral aggregate, 5.0%-5.2% of SBS modified asphalt and 0.27%-0.5% of basalt fiber, wherein the mineral aggregate comprises coarse and fine aggregate and mineral powder, the asphalt-aggregate ratio of the SBS modified asphalt to the mineral aggregate is 5.0%, and the mineral powder accounts for 5% of the total mass of the mineral aggregate. According to the invention, the basalt fiber is doped to prepare the asphalt mixture with high self-healing performance; the basalt fiber is added, so that the self-healing performance is effectively enhanced; the self-healing performance of the basalt fiber asphalt mixture can be improved by 34.8% compared with that of a common asphalt mixture; after microwave heating treatment, the self-healing performance can be improved by 23.0%; and when a damaged pavement is subjected to self-healing repair and microwave heating is carried out for90s or above, the temperature of the mixture exceeds 130 DEG C, the heating rate can reach 0.62-0.67 DEG C/s, and the temperature requirement for self-healing of the asphalt mixture is completely met.
本发明提出了一种掺玄武岩纤维高自愈合性能沥青混合料制备方法，及该混合料自愈合实现方法。所述高自愈合性能沥青混合料由矿料、SBS改性沥青和玄武岩纤维制备而成，原材料所占质量分数为：矿料91.2%~94.8%，SBS改性沥青5.0%~5.2%，玄武岩纤维0.27%~0.5%，其中矿料包括粗细集料和矿粉；SBS改性沥青与矿料的油石比为5.0%；矿粉占矿料总质量的5%。本发明通过掺加玄武岩纤维制备高自愈合性能沥青混合料，添加玄武岩纤维有效增强了自愈合性能，玄武岩纤维沥青混合料自愈合性能相较于普通沥青混合料可提高34.8%，微波加热处理后自愈合性能可提高23.0%，当对损伤路面进行自愈合修复时，微波加热90s以上时，混合料温度超过130℃，升温速率可达0.62~0.67℃/s，完全满足沥青混合料自愈合的温度要求。
Basalt fiber-doped asphalt mixture with high self-healing performance
The invention provides a preparation method of a basalt fiber-doped asphalt mixture with high self-healing performance and a self-healing implementation method of the mixture. The asphalt mixture withhigh self-healing performance is prepared from the following raw materials in percentage by mass: 91.2%-94.8% of mineral aggregate, 5.0%-5.2% of SBS modified asphalt and 0.27%-0.5% of basalt fiber, wherein the mineral aggregate comprises coarse and fine aggregate and mineral powder, the asphalt-aggregate ratio of the SBS modified asphalt to the mineral aggregate is 5.0%, and the mineral powder accounts for 5% of the total mass of the mineral aggregate. According to the invention, the basalt fiber is doped to prepare the asphalt mixture with high self-healing performance; the basalt fiber is added, so that the self-healing performance is effectively enhanced; the self-healing performance of the basalt fiber asphalt mixture can be improved by 34.8% compared with that of a common asphalt mixture; after microwave heating treatment, the self-healing performance can be improved by 23.0%; and when a damaged pavement is subjected to self-healing repair and microwave heating is carried out for90s or above, the temperature of the mixture exceeds 130 DEG C, the heating rate can reach 0.62-0.67 DEG C/s, and the temperature requirement for self-healing of the asphalt mixture is completely met.
本发明提出了一种掺玄武岩纤维高自愈合性能沥青混合料制备方法，及该混合料自愈合实现方法。所述高自愈合性能沥青混合料由矿料、SBS改性沥青和玄武岩纤维制备而成，原材料所占质量分数为：矿料91.2%~94.8%，SBS改性沥青5.0%~5.2%，玄武岩纤维0.27%~0.5%，其中矿料包括粗细集料和矿粉；SBS改性沥青与矿料的油石比为5.0%；矿粉占矿料总质量的5%。本发明通过掺加玄武岩纤维制备高自愈合性能沥青混合料，添加玄武岩纤维有效增强了自愈合性能，玄武岩纤维沥青混合料自愈合性能相较于普通沥青混合料可提高34.8%，微波加热处理后自愈合性能可提高23.0%，当对损伤路面进行自愈合修复时，微波加热90s以上时，混合料温度超过130℃，升温速率可达0.62~0.67℃/s，完全满足沥青混合料自愈合的温度要求。
Basalt fiber-doped asphalt mixture with high self-healing performance
一种掺玄武岩纤维高自愈合性能沥青混合料
LI BO (Autor:in) / WANG GUOFANG (Autor:in) / WU ZHENGGUANG (Autor:in) / ZHANG CHEN (Autor:in) / WU BANGWEI (Autor:in) / ZHOU HANG (Autor:in)
01.09.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Basalt fiber and lignin fiber co-doped asphalt mixture
| Europäisches Patentamt | 2020
Basalt composite fiber and asphalt mixture containing basalt composite fiber
| Europäisches Patentamt | 2021
Fatigue Performance Of High-Modulus Basalt Fiber-Reinforced Asphalt Mixture
| DOAJ | 2023