Shape memory epoxy resin modified asphalt mixture and preparation method thereof

Abstract

The invention provides a shape memory epoxy resin modified asphalt mixture and a preparation method thereof. The preparation method comprises the following steps: taking 4-6 parts of asphalt, 100 parts of aggregate, 1-20 parts of shape memory epoxy resin and 1-6 parts of mineral powder according to parts by mass; mixing the aggregate and the shape memory epoxy resin, and then blending uniformly atthe temperature of 140 DEG C to 180 DEG C to obtain a blending mixture a; mixing the asphalt and the blending mixture a, and then blending uniformly at the temperature of 140 DEG C to 180 DEG C to obtain a mixing mixture b; and mixing the mineral powder and the blending mixture b, then blending uniformly at the temperature of 140 DEG C-180 DEG C, cooling to a room temperature, and thus obtainingthe shape memory epoxy resin modified asphalt mixture. The shape memory epoxy resin modified asphalt mixture has an excellent pavement performance and a remarkable improvement effect on the deformation recovery performance of the asphalt mixture; and the preparation method is simple in operation and low in cost and has low requirements on equipment and the characteristics of environmental protection.

Description

technical field [0001] The invention relates to the field of material processing, in particular to a shape memory epoxy resin modified asphalt mixture and a preparation method thereof. Background technique [0002] Asphalt pavement is widely used in urban roads and expressways because of its excellent road performance, and it is the main pavement structure form of high-grade highways in my country. Asphalt mixture is the surface material of asphalt pavement, which is in direct contact with the external environment. Asphalt mixture is a temperature-sensitive material, its mechanical behavior and performance are greatly affected by temperature, especially under the action of continuous high and low temperature and rapid cooling, asphalt pavement will produce thermal stability such as rutting, crowding, and pushing Diseases, low-temperature cracks and temperature cracks, etc., in the low-temperature rainy and snowy climate, the road surface will freeze and frost, which will se...

AI Technical Summary

Problems solved by technology

However, limited by the viscoelastic-plastic material properties of asphalt mixture, it is impossible to avoid the accumulation of plastic deformation and shrinkage deformation of asphalt mixture under the combined action of repeated traffic loads and environmental temperature changes. The deformation ability is not enough to resist the generation and accumulation of deformation, and the deformation recovery and self-healing ability of the asphalt mixture itself is limited, resulting in the high temperature rutting and low temperature cracking of the asphalt pavement have not been fundamentally resolved

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