Warm-mix epoxy asphalt, mixture containing it and preparation method thereof

Abstract

The invention discloses warm mixed epoxy asphalt. The product comprises a warm mixed asphalt, an epoxy resin composition and a curing agent. The warm mixed asphalt comprises a warm mixing agent and matrix asphalt. The warm mixing agent is prepared by performing a sweating process by taking a byproduct polyethylene wax as a raw material. In the sweating process, oil soluble organic matters capable of decomposed to generate gas are pre-added into the byproduct polyethylene wax raw material, and micro-bubbles are formed in a wax layer by means of gas generated by the byproduct polyethylene wax which is heated, so that a liquid component is quickly discharged and separated; meanwhile, in the sweating process, the liquid component is carried out through the wax layer by means of the air flow to separate the solid component from the liquid component in a forced manner, so that the low molecular weight components in the raw material are removed more effectively. The warm mixing agent used in the product not only can play a warm mixing role on the asphalt, but also can improve the thermal stability of the asphalt, improve the anti-thermal aging property, reduce the fusing temperature of the asphalt and the viscosity at the temperature, and reduce the generation amount of harmful gas.

Description

technical field [0001] The invention relates to asphalt, in particular to a warm-mixed epoxy asphalt and a preparation method thereof. Background technique [0002] With the continuous increase of highway mileage, the number of highway bridges also increases. However, some problems have also been exposed. Among them, the diseases caused by the failure of the waterproof adhesive layer between the pavement layers of the bridge deck and between the pavement layer and the panel account for a large proportion, which has caused the industry to criticize the bridge deck pavement materials. and craftsmanship. Epoxy asphalt obtained by adding epoxy resin to asphalt has a better effect as the bonding material between bridge decks. However, due to the high viscosity of epoxy asphalt, the construction temperature is required to be high during construction, and a certain operating time is required, so the construction difficulty is increased; in addition, after adding epoxy resin to th...

AI Technical Summary

Problems solved by technology

Although this patent solves the above-mentioned problems to a certain extent, in the process of preparing warm mixing agent, because the reaction temperature of the intermediate is low, and lacks catalyst, the reaction speed is slower, and the activity of the intermediate is lower, which affects the relationship between the intermediate and the intermediate. The degree of reaction and the depth of reaction of aromatic oil are not easy to control, and the properties of the obtained warm mix agent are unstable, which affects the application effect in asphalt

In addition, the preparation process of the warm mix agent is relatively complicated, and when the warm mix agent is used in asphalt, there is also the problem of poor anti-aging performance

[0017] In the process of producing epoxy asphalt mixture, the use of current warm mixing technology usually causes the viscosity or elongation of epoxy asphalt to decrease at 60°C, thus affecting the high temperature stability or low temperature cracking resistance of epoxy asphalt mixture

Therefore, it is urgent to develop an epoxy asphalt mixture, which can not only reduce the construction temperature and solve the problem of poor flexibility, but also solve the problems of high and low temperature performance and thermal aging resistance.