Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Magnetic powder modified asphalt mixture and preparation method thereof
The invention discloses a magnetic powder modified asphalt mixture and a preparation method thereof, wherein the magnetic powder modified asphalt mixture is prepared by replacing part of mineral powder and fine aggregate components in a traditional asphalt mixture with magnetic powder, and the magnetic powder modified asphalt mixture comprises the following components in percentage by mass: 0.1-50.0% of magnetic powder, 2.0-15.0% of asphalt, 40.0-95.0% of aggregate, 0.0-40.0% of mineral powder, 0.0-1.0% of fiber and 0.0-1.0% of a surfactant. The magnetic powder modified asphalt mixture is mainly used for steel bridge deck pavement, and forms a pavement system together with an anticorrosive coating, a waterproof bonding layer, a buffer layer and the like. After paving, magnetizing the magnetic powder through an external magnetic field to magnetize the mixture paving layer so as to achieve a magnetic hardening effect, so that on the basis of physicochemical bonding of a traditional paving system, magnetic bonding between the mixture of the paving layer and the steel bridge deck slab is additionally increased, and the rigidity difference is reduced; therefore, the interlayer bonding and deformation compliance of the steel bridge deck pavement system are enhanced. The magnetic powder modified asphalt mixture can also be used for technologies such as pavement internal defect self-diagnosis and the like.
本发明公开了一种磁粉改性沥青混合料及其制备方法，即将传统沥青混合料中的部分矿粉和细集料组分采用磁粉替代而制成，其各组分质量分数为：磁粉0.1％～50.0％，沥青2.0％～15.0％，集料40.0％～95.0％，矿粉0.0％～40.0％，纤维0.0％～1.0％，表面活性剂0.0％～1.0％。本发明的磁粉改性沥青混合料主要用于钢桥面铺装，并与防腐层、防水粘结层和缓冲层等共同组成铺装体系。铺装完成后，通过外加磁场对磁粉充磁使混合料铺装层磁化，以达到磁致硬化效果，从而在传统铺装体系物化粘结的基础上，额外增加铺装层混合料与钢桥面板之间的磁力粘结，并降低刚度差异，增强钢桥面铺装体系的层间结合和变形追从性。该磁粉改性沥青混合料还可用于路面内部缺陷自诊断等技术。
Magnetic powder modified asphalt mixture and preparation method thereof
The invention discloses a magnetic powder modified asphalt mixture and a preparation method thereof, wherein the magnetic powder modified asphalt mixture is prepared by replacing part of mineral powder and fine aggregate components in a traditional asphalt mixture with magnetic powder, and the magnetic powder modified asphalt mixture comprises the following components in percentage by mass: 0.1-50.0% of magnetic powder, 2.0-15.0% of asphalt, 40.0-95.0% of aggregate, 0.0-40.0% of mineral powder, 0.0-1.0% of fiber and 0.0-1.0% of a surfactant. The magnetic powder modified asphalt mixture is mainly used for steel bridge deck pavement, and forms a pavement system together with an anticorrosive coating, a waterproof bonding layer, a buffer layer and the like. After paving, magnetizing the magnetic powder through an external magnetic field to magnetize the mixture paving layer so as to achieve a magnetic hardening effect, so that on the basis of physicochemical bonding of a traditional paving system, magnetic bonding between the mixture of the paving layer and the steel bridge deck slab is additionally increased, and the rigidity difference is reduced; therefore, the interlayer bonding and deformation compliance of the steel bridge deck pavement system are enhanced. The magnetic powder modified asphalt mixture can also be used for technologies such as pavement internal defect self-diagnosis and the like.
本发明公开了一种磁粉改性沥青混合料及其制备方法，即将传统沥青混合料中的部分矿粉和细集料组分采用磁粉替代而制成，其各组分质量分数为：磁粉0.1％～50.0％，沥青2.0％～15.0％，集料40.0％～95.0％，矿粉0.0％～40.0％，纤维0.0％～1.0％，表面活性剂0.0％～1.0％。本发明的磁粉改性沥青混合料主要用于钢桥面铺装，并与防腐层、防水粘结层和缓冲层等共同组成铺装体系。铺装完成后，通过外加磁场对磁粉充磁使混合料铺装层磁化，以达到磁致硬化效果，从而在传统铺装体系物化粘结的基础上，额外增加铺装层混合料与钢桥面板之间的磁力粘结，并降低刚度差异，增强钢桥面铺装体系的层间结合和变形追从性。该磁粉改性沥青混合料还可用于路面内部缺陷自诊断等技术。
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