Rubber asphalt high temperature viscosity reducer, preparation method and application thereof

Abstract

The invention discloses a rubber asphalt high temperature viscosity reducer, a preparation method and an application thereof. The rubber asphalt high temperature viscosity reducer is prepared by raw materials of, by mass, 100 parts of oxidized polyethlene wax, 5-40 parts of higher fatty acid and 10-50 parts of metal hydroxide. The rubber asphalt high temperature viscosity reducer is simple in preparation process, convenient to use and capable of reducing high temperature viscosities of ordinary rubber asphalt and modified rubber asphalt and reducing rubber asphalt intermolecular surface tension so that mixing temperatures of rubber asphalt mixtures are reduced, and purposes of reducing energy consumption and protecting environment are achieved.

Description

technical field [0001] The invention relates to a rubber asphalt high-temperature viscosity reducer, a preparation method and application thereof, and belongs to the technical field of rubber asphalt modification. Background technique [0002] At present, among the pavement materials in the highway industry, hot-mix rubber asphalt mixture still occupies the vast majority of the proportion. The mixing temperature of ordinary rubber asphalt mixture is about 165°C, while the temperature of modified rubber asphalt mixture is about 175°C. At present, the mixing temperature of SMA, OGFC and other multi-functional pavements that are more and more widely used is about 190°C. Heating rubber asphalt and mineral materials to such a high temperature not only consumes a lot of energy and aggravates the aging of rubber asphalt, but also emits a large amount of greenhouse gases, rubber asphalt smoke, and dust during production and construction, which greatly endangers construction personne...

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Problems solved by technology

[0006] Chinese patent 201020233760.9 records rubber asphalt warm mix agent and rubber asphalt mixture mixed by it and the preparation method of the two, wherein rubber asphalt warm mix agent is composed of alkylamine cationic surfactant, amide cationic surfactant, quaternary Composed of ammonium salt cations, surfactants, and calcium chloride water, the proportion of water accounts for 81.5%-90%, and the water vapor at high temperature corrodes the equipment of the rubber asphalt mixing plant very seriously. At the same time, a large amount of water also It will cause rubber asphalt mixture to foam and reduce the adhesion of rubber asphalt to aggregate

This warm mix additive contains hydrochloric acid, which will corrode the equipment during the storage and addition of the warm mix additive. Although the amine anti-stripping agent can improve the adhesion between rubber asphalt and aggregates, a large amount of water will still corrode rubber asphalt mixture. Mixing equipment, while the durability of rubber asphalt mixture is carefully prepared

[0008] These patented rubber asphalt warm mix agents or additives are inconvenient to add and use. The water in the components will form water vapor at high temperature, which will corrode the equipment of the mixing plant. Reduced performance, difficult to achieve the effect of hot mix rubber asphalt mixture

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