Emulsified asphalt with high viscosity and high elasticity and preparation method of emulsified asphalt

Abstract

The invention discloses emulsified asphalt with high viscosity and high elasticity and a preparation method of the emulsified asphalt. The emulsified asphalt is prepared from asphalt stock, waste tirerubber powder, a tackifier, an emulsifier, a thermoplastic elastomer, water, carbon black, an antiaging agent, modified calcium carbonate and a surfactant; the emulsified asphalt with high viscosityand high elasticity is prepared by steps as follows: the waste tire rubber powder pulverized by a pulverizer, the tackifier, the emulsifier, the thermoplastic elastomer, water, carbon black, the antiaging agent, modified calcium carbonate and the surfactant are added to the molten asphalt stock. Through the adoption of the method, reaction temperature can be reduced, asphalt aging is prevented, release of toxic gas is reduced, resource saving and environment protection are realized, and operation is simple; the prepared modified asphalt mixture has higher bend resistance, break resistance, high-temperature resistance and the like, and the application range of the modified asphalt is enlarged.

Description

technical field [0001] The invention relates to an asphalt material, in particular to a high-viscosity and high-elasticity emulsified asphalt and a preparation method thereof. Background technique [0002] With the development of the economy, the number of vehicles continues to increase, and road safety is particularly important. The construction of roads, especially high-grade roads, is urgent. Asphalt has good viscosity and good adhesion to mineral materials. It is a very good material, but modern roads have poor anti-rutting, anti-skid, and high-temperature resistance, and are loose, peeling, potholes and other water damage diseases. The traffic problems caused by a large number of ruts and cracks on the asphalt pavement are becoming more and more serious. The task of road maintenance and repair is becoming more and more difficult, the cost is getting higher and higher, and a large amount of asphalt material waste is generated. How to recycle and reuse these materials? R...

AI Technical Summary

Problems solved by technology

[0002] With the development of the economy, the number of vehicles continues to increase, and road safety is particularly important. The construction of roads, especially high-grade roads, is urgent. Asphalt has good viscosity and good adhesion to mineral materials. It is a very good material, but modern roads have poor anti-rutting, anti-skid, and high-temperature resistance, and are loose, peeling, potholes and other water damage diseases. The traffic problems caused by a large number of ruts and cracks on the asphalt pavement are becoming more and more serious. The task of road maintenance and repair is becoming more and more difficult, the cost is getting higher and higher, and a large amount of asphalt material waste is generated. How to recycle and reuse these materials? Reducing the pressure on the environment has also attracted more and more attention

[0003] Long-term practice has proved that when the viscosity of asphalt increases, the strength of asphalt will increase, and the anti-rutting ability of asphalt pavement will also increase. Therefore, high-viscosity asphalt is an inevitable demand in road construction. Larger restrictions limit its further development. At present, high-viscosity asphalt is mainly prepared by adding high-molecular polymers to asphalt raw materials. The storage stability is not good, which affects the performance of asphalt pavement. Asphalt is a road paving material, which has certain water resistance and adhesion, but the wear resistance, impact resistance and bending resistance of ordinary asphalt mixture are poor. , especially the poor toughness and viscous toughness of asphalt, in order to solve this problem, the use of high thermoplastic elastomer is very important, high thermoplastic elastomer can improve the bending resistance of asphalt materials to a certain extent, and improve the performance of asphalt pavement

[0004] When the mixed asphalt material is in use, the asphalt material is heated to a certain temperature and mixed with the mineral material evenly. When operating at a high temperature, the asphalt and other components will volatilize harmful gases, which is a great hazard to the health of the construction personnel, and the asphalt material is easy to Aging, emulsified asphalt means that the asphalt is melted and dispersed in the aqueous solution containing emulsifier in the form of fine particles through the action of mechanical shearing. Construction personnel can construct emulsified asphalt at normal temperature to prevent high-temperature asphalt from harming the human body. Hazardous, but requires a large amount of water, which will reduce the strength and water resistance of asphalt

Images