Multifunctional testing device and method for asphalt stirring, preparation and microwave aging

Abstract

The invention discloses a multifunctional testing device and method for asphalt stirring, preparation and microwave aging. The device comprises a temperature control system, a stirring system, an objective table and an air blowing system; the temperature control system comprises a control box, an environment box, an infrared temperature probe, a microwave generator and a control panel, the stirring system comprises an illuminating lamp, a motor and a rotor; the rotor comprises a first rotor and a second rotor, and the air blowing system comprises an air blowing window, a draught fan, a filter,a heater and a cooler; in a process of performing microwave aging on the asphalt by using the testing device, a test mold is arranged on the objective table, the test mold is used for holding a testsample, the test sample is heated by the microwave generator, and the temperature of the test mold is monitored in real time by the infrared temperature probe. When the above testing device is used for stirring the asphalt and preparing modified asphalt, the rotor adopts the second rotor, and the second rotor is controlled to stir the test sample through the control panel. By adoption of the multifunctional testing device and method provided by the invention, the preparation efficiency and the output of the aged asphalt are improved, and the multifunctional test requirements are met.

Description

technical field [0001] The invention relates to a test device and method for asphalt mixing and asphalt aging, in particular to a multifunctional test device and method for asphalt mixing, preparation and microwave aging. Background technique [0002] Existing asphalt mixing devices mainly include mechanical mixers and high-speed shear emulsifiers, which are generally used for mixing asphalt and preparing modified asphalt. Since the mixing of asphalt and the preparation of modified asphalt need to control a relatively high temperature, generally above 150°C, therefore, an additional heating device needs to be configured during the test. On the one hand, additional heating devices need to be configured and the temperature is not easy to control; on the other hand, existing research shows that microwave heating of asphalt is the fastest, followed by infrared heating, electric furnace wire oven is the slowest, and infrared heating has the greatest impact on accelerating asphalt...

AI Technical Summary

Problems solved by technology

It can be concluded that the prior art mainly has the following disadvantages: (1) when the control box is used to mix asphalt or prepare modified asphalt, an additional electric furnace is generally required for heating, and the temperature is difficult to control and uneven, which easily causes the aging of asphalt; (2) microwave When aging asphalt, the aging efficiency is low and the quality of each aging asphalt is small, which makes it difficult to meet the requirements of large-scale tests; (3) the existing device has a single function and cannot meet various test requirements

[0003] In addition, microwaves in the natural environment can cause asphalt aging, making asphalt hard and brittle, reducing the performance and life of asphalt and asphalt concrete. It is necessary to evaluate the asphalt aging caused by microwaves

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