A kind of bionic self-healing asphalt and preparation method thereof

A self-healing and asphalt technology, used in building components, building insulation materials, buildings, etc., can solve the problems of polluting the environment, accelerating the aging of asphalt concrete, and consuming large amounts of energy, achieving the highest instantaneous water resistance, excellent instantaneous water resistance, Excellent long-term self-healing effect

CN107022198BActive Publication Date: 2019-10-11BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-10-11

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Abstract

The invention provides bionic self-healing asphalt and a preparation method thereof. The bionic self-healing asphalt is prepared from matrix asphalt and a bionic self-healing asphalt modifier, wherein the bionic self-healing asphalt modifier is prepared from a self-healing component. A material which has swelling property and autonomously propagates and crystalizes at normal temperature is taken as the self-healing component, and is combined with the common matrix asphalt in the art to simulate a human body healing system, so that on the premise of not affecting the pavement performance of swelling the asphalt, the obtained bionic self-healing asphalt enables a road to have an autonomous healing function like a human body; the bionic self-healing asphalt has the functions of swelling and autonomously propagating and crystalizing, the preparation method is simple, the production cost is low, and the prepared bionic self-healing asphalt has the effects of autonomously healing cracks and effectively reducing cracking, and furthermore other properties of the asphalt are not affected.
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Description

technical field

[0001] The invention relates to the technical field of road and building material modification, and more specifically relates to a bionic self-healing asphalt and a preparation method thereof. Background technique

[0002] The construction of transportation infrastructure is the cornerstone of national development. As of 2016, the total mileage of my country's highways has reached 4.57 million kilometers, and urban roads account for 1 / 3 of the total urban area. Nearly 200,000 kilometers of roads need to be restored and reconstructed every year. The frequent occurrence of road diseases leads to huge investment in road maintenance, and at the same time has a major impact on traffic safety and people's travel. The problem of road maintenance has attracted widespread attention at home and abroad. In some areas with heavy traffic pressure, it is of great significance to build durable and long-life roads.

[0003] According to research, road cracks are not only th...

Examples

Embodiment 1

[0061] This embodiment provides a bionic self-healing asphalt, including base asphalt and a bionic self-healing asphalt modifier.

[0062] Wherein, the mass percentage of the base asphalt is 20%, and the mass percentage of the bionic self-healing asphalt modifier is 80%.

[0063] Among them, the bionic self-healing asphalt modifier includes self-healing components and anti-stripping components. The self-healing component includes expansive resin and expansive cement, and the anti-peeling component includes calcium lignosulfonate, sodium lignosulfonate and petroleum resin.

[0064] In the bionic self-healing asphalt modifier of this embodiment, the mass percentage of the self-healing component is 80%, and the mass percentage of the anti-stripping component is 20%.

[0065] The mass percent of each substance in the self-healing component is: 50% of the expansion resin and 50% of the expansion cement.

[0066] The mass percent of each substance in the anti-peeling component is:...

Embodiment 2

[0078] This embodiment provides a bionic self-healing asphalt, including base asphalt and a bionic self-healing asphalt modifier.

[0079] Wherein, the mass percentage of the base asphalt is 10%, and the mass percentage of the bionic self-healing asphalt modifier is 90%.

[0080] Among them, the bionic self-healing asphalt modifier includes self-healing components and anti-stripping components. The self-healing component includes expansive resin and expansive cement, and the anti-stripping component includes calcium lignosulfonate and petroleum resin.

[0081] In the bionic self-healing asphalt modifier of this embodiment, the mass percentage of the self-healing component is 90%, and the mass percentage of the anti-stripping component is 10%.

[0082] The mass percentages of each substance in the self-healing component are: 63% of expansion resin and 37% of expansion cement.

[0083] The mass percent of each substance in the anti-peeling component is: 50% of calcium lignosul...

Embodiment 3

[0095] This embodiment provides a bionic self-healing asphalt, including base asphalt and a bionic self-healing asphalt modifier.

[0096] Wherein, the mass percentage of the base asphalt is 70%, and the mass percentage of the bionic self-healing asphalt modifier is 30%.

[0097] Among them, the bionic self-healing asphalt modifier includes self-healing components and anti-stripping components. The self-healing component includes expansive resin and expansive cement, and the anti-stripping component includes sodium lignosulfonate and petroleum resin.

[0098] In the bionic self-healing asphalt modifier of this embodiment, the mass percentage of the self-healing component is 70%, and the mass percentage of the anti-stripping component is 30%.

[0099] The mass percentages of each substance in the self-healing component are: 74% of expansion resin and 26% of expansion cement.

[0100] The mass percent of each substance in the anti-peeling component is: 40% of sodium lignosulfo...