The latest research results at home and abroad have comprehensively analyzed the self-healing and repairing technology of asphalt mixture, and introduced the self-healing mechanism of asphalt and self-healing behavior of asphalt. Active and passive healing methods are mainly discussed. Both methods can effectively enhance the healing properties of asphalt materials and achieve the purpose of repairing cracks and looseness of asphalt concrete pavement. The development of self-healing asphalt concrete technology at home and abroad is expounded, and the application significance and application prospect of the technology are analyzed. The conclusion is that the environmental and social benefits of self-healing asphalt concrete technology are outstanding, and the promotion is of great significance and good development prospects.
Abstract. The release rate of chloride ions could be controlled by adding additives into the anti-icing modifier, for the purpose of extending the modifier's usage life. The anti-icing capacity of the modifier with controlled released additives was researched in this paper by the "Chloride ion concentration change monitoring test" and "Dynamic water simulation test", and the service life of the modifier has been analyzed.
This article introduced application technology of road anti-icing asphalt coating. By conducting field tests, the construction procedures and requirements were summarized. By conducting lab tests, performances of the anti-icing asphalt coating were verified. Testing results show that the anti-icing asphalt coating gives road pavement considerable ice resisting function. Compared to normal pavement, the pavement with anti-icing asphalt coating has better sliding resistance and the snow is much easier to be removed.
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