Preparation method of high-viscosity modified emulsified asphalt

Abstract

The invention relates to the field of asphalt preparation, and particularly relates to a preparation method of high-viscosity modified emulsified asphalt. An asphalt preparation device is used in the preparation method and comprises a main body and a crushing roller, wherein the main body is of a cylindrical structure; a placement groove of a conical structure is formed in the top of the main body; a crushing groove of a conical structure is formed in the bottom of the placement groove; a stirring groove is formed in the bottom of the crushing groove; the placement groove, the crushing groove and the stirring groove are sequentially communicated; the crushing roller is vertically inserted into the main body; the top of the crushing roller penetrates through the crushing groove, extends into the placement groove and is flush with the top of the main body; the bottom of the crushing roller extends into the stirring groove; the crushing roller is of a hollow structure; a plurality of through holes are symmetrically formed in the outer wall of the crushing roller; a supporting frame is arranged at the top of the main body; and an inserting rod is arranged at the bottom of the supporting frame. The preparation method disclosed by the invention can be used for efficiently crushing and grinding the asphalt; meanwhile, the crushed asphalt can be automatically cleaned; the preparation method is suitable for popularization.

Description

technical field [0001] The invention relates to the field of asphalt preparation, in particular to a method for preparing high-viscosity modified emulsified asphalt. Background technique [0002] Emulsified asphalt is a liquid asphalt produced by asphalt and emulsifier under a certain process, which is oil-in-water or water-in-oil. Emulsified asphalt is generally used for road construction, while conventional emulsified asphalt will reduce the quality of the road due to its low viscosity. Therefore, high-viscosity modified emulsified asphalt is used in modern road construction, which has the characteristics of high bonding strength and good low-temperature performance, which can enhance the bonding strength between asphalt pavement layers, prevent inter-layer damage, and improve the durability of the pavement . [0003] Most of the existing high-viscosity modified emulsified asphalt preparation methods are to crush the asphalt first, then pour the emulsifier into the crushe...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing high-viscosity modified emulsified asphalt preparation methods are to crush the asphalt first, then pour the emulsifier into the crushed asphalt to mix and stir, and continuously heat the mixed asphalt during the stirring process. The asphalt is melted and fully mixed with an emulsifier to form a high-viscosity modified emulsified asphalt. However, asphalt is viscous, and the conventional crushing device will produce stickiness during crushing, which requires manual cleaning, which is time-consuming and labor-intensive. The crushing effect of asphalt is not good, and the particles after crushing are still relatively large, which will affect the melting effect of asphalt and increase the preparation cost. Purity of Viscosity Modified Emulsified Bitumen

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