Waste rubber-plastic polymer alloy stabilized rubber-modified asphalt and its preparation process

Abstract

The invention discloses a waste rubber-plastic polymer alloy stabilized rubber-modified asphalt, which comprises the following components in parts by weight: 80-100 parts of matrix asphalt, 10-20 parts of rubber-plastic polymer alloy modifier, compatible 5-10 parts of agent, 5-15 parts of mineral fiber, and 0-1 part of stabilizer; wherein, the rubber-plastic polymer alloy modifier is blended from the following raw materials in parts by weight: waste tire rubber powder 50-80 parts, 20-50 parts of waste plastic particles, 1-5 parts of emulsifier, 2-5 parts of cross-linking agent, 3-5 parts of paraffin, 0.2-1.5 parts of rubber deodorant, and 0.05-05 parts of plastic deodorant 0.15 servings. The invention uses waste rubber and waste plastics as raw materials to modify asphalt to prepare waste rubber-plastic polymer alloy stabilized rubber-modified asphalt. The modified asphalt has excellent low-temperature, high-temperature performance and storage performance, and realizes Recycling of resources reduces environmental pollution.

Description

technical field [0001] The invention relates to a modified asphalt and a preparation process thereof. More specifically, the invention relates to a waste rubber-plastic polymer alloy stabilized rubber-modified asphalt and a preparation process thereof. Background technique [0002] At present, with the continuous increase of traffic volume and the continuous increase of heavy-duty vehicles, some asphalt pavements have various degrees of early damage such as ruts, cracks, and potholes shortly after they are officially opened to traffic, which not only causes great economic losses. Losses have also brought greater hidden dangers to driving comfort and driving safety. Therefore, the development of road traffic puts forward higher requirements on the performance of asphalt pavement, which makes it difficult for ordinary asphalt mixture to meet the requirements of asphalt pavement. [0003] Modified asphalt refers to the asphalt binder made by adding modifiers such as rubber, r...

AI Technical Summary

Problems solved by technology

[0007] When using waste rubber-plastic polymer alloy to modify asphalt, the waste rubber-plastic polymer particles absorb the light oil in the asphalt and swell, changing from the original compact structure to a relatively loose flocculent structure, and the swelled rubber powder produced can Relatively uniform suspension and dispersion in asphalt forms a semi-solid continuous phase system with high viscosity. However, during the storage of modified asphalt, rubber and plastic modifiers and asphalt may settle, and rubber and plastic with large molecular weight Modifiers will clump together, causing delamination with asphalt, affecting paving performance