Anti-adhesion emulsified asphalt capable of being quickly demulsified, cured and molded at room temperature and preparation method thereof

Abstract

The invention relates to anti-adhesion emulsified asphalt capable of being quickly demulsified, cured and molded at a room temperature and a preparation method thereof and belongs to the field of asphalt road materials. The anti-adhesion emulsified asphalt is prepared from heavy-duty road asphalt, deoiled asphalt, petroleum resin, polymer latex, an assistant, an emulsifier, a pH regulator and water. The preparation method comprises the steps of firstly adding the emulsifier, the polymer latex and an assistant and water solution to water, adjusting the pH value and preparing liquid soap; stirring the heavy-duty road asphalt, the deoiled asphalt and the petroleum resin at a high temperature evenly and heating the mixture to a proper temperature, carrying out high-speed shearing on the mixture and the liquid soap through a colloid mill to obtain the anti-adhesion emulsified asphalt. The emulsifying process of the anti-adhesion emulsified asphalt is simple, and popularization and application are facilitated; and the anti-adhesion emulsified asphalt can be quickly demulsified, cured and molded at the room temperature, so that the work efficiency is improved; the anti-adhesion emulsified asphalt has the advantage of wheel adhesion resistance when being used as a road bonding layer, a failure of the bonding layer caused by the damage of a construction vehicle to the bonding layer is avoided, the service life of a road is prolonged, and meanwhile, environmental pollution is avoided.

Description

technical field [0001] The invention relates to the field of asphalt road materials, in particular to an anti-adhesion emulsified asphalt formed by rapid demulsification and solidification at room temperature and a preparation method thereof. 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 constructi...

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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 solidify. After spreading, it often takes several hours before the mixture can be paved, 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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