Easily-prepared anti-adhesive emulsified asphalt achieving normal-temperature rapid demulsification and preparation method thereof

Abstract

The invention relates to easily-prepared anti-adhesive emulsified asphalt achieving normal-temperature rapid demulsification and a preparation method thereof, and belongs to the technical field of road engineering materials. The anti-adhesive emulsified asphalt is prepared from heavy traffic road asphalt, deoiled asphalt, an asphalt interface modifier, polymer latex, an auxiliary, an emulsifier, an acidifying or alkalizing agent and water; the preparation method comprises the steps that the emulsifier, the polymer latex and an auxiliary-aqueous solution are added into water, the PH value is adjusted, liquid soap is prepared, the heavy traffic road asphalt, the deoiled asphalt and the asphalt interface modifier are stirred to be uniform at a high temperature and heated to reach a proper temperature, the mixture and the liquid soap are subjected to colloid mill high-speed shear preparation, and the anti-adhesive emulsified asphalt is obtained. The anti-adhesive emulsified asphalt has the advantages that the emulsifying temperature of the asphalt is low, emulsification is easy, and the emulsification technology is simple and easy to operate; demulsification can be conducted rapidly at a normal temperature, and the construction efficiency is improved; the anti-adhesive emulsified asphalt has the advantage of being resistant to wheel adhesion when serving as a road adhesion layer, the phenomenon that due to damage of a construction vehicle to the adhesion layer, the adhesion layer loses efficacy is avoided, and the service life of a road is prolonged.

Description

technical field [0001] The invention relates to the field of designed asphalt road materials, in particular to a method for preparing an anti-adhesion emulsified asphalt that is quickly demulsified at room temperature and is easy to prepare. Background technique [0002] The quality of interlayer bonding is one of the important factors affecting the service life of the pavement. During the construction of pavement engineering, the process of spreading adhesive layer materials is usually used between adjacent structural layers to form a complete force bearing between the layers of the pavement. The structure can avoid or reduce the structural slippage between layers of the pavement caused by traffic load, or the diseases such as wrapping and rutting, and improve the durability of the pavement. [0003] However, in the actual construction process of interlayer adhesive materials, the phenomenon that the spread adhesive layer oil is often carried away by the asphalt constructio...

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Problems solved by technology

[0003] However, in the actual construction process of interlayer adhesive materials, the phenomenon that the spread adhesive layer oil is often carried away by the construction vehicle of asphalt mixture and adhered to the wheel phenomenon makes the interlayer adhesive layer material spread unevenly, resulting in the adhesion of the adhesive layer. The failure of the function will affect the formation of the overall stress structure of the pavement and reduce the service life of the pavement

In addition, the existing viscous emulsified asphalt takes a long time to demulsify, and it often takes several hours to pave the mixture after spreading, resulting in a decrease in construction efficiency

[0004] The Chinese patent with the publication number CN104448848A proposes a fast-setting, non-sticky layer emulsified asphalt and its preparation method, which also has the effect of fast demulsification and non-sticking, but its preparation process is complicated and takes a long time. It takes nearly 2 days at a time, which is not conducive to the promotion of applications

[0005] The Chinese patent with the publication number CN105907020A proposes a preparation of non-stick emulsified asphalt, which can also achieve the effect of non-stick wheel, but the preparation process needs to add SBS polymer modifier to the base asphalt for shearing, the process is complicated and It is difficult to emulsify the modified asphalt with polymer, and it does not have the performance of rapid demulsification

[0006] The Chinese patent with publication number CN105802267A proposes a preparation method and construction technology of non-stick wheel emulsified asphalt, but the preparation process directly uses hard asphalt for emulsification, which is not only difficult to emulsify but also has poor emulsification effect, which affects the storage stability of emulsified asphalt sex

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