Device for testing freezing resistance of salt storage asphalt mixtures and testing method thereof

Abstract

The invention discloses a device for testing freezing resistance of salt storage asphalt mixtures and a testing method thereof. The device comprises a box body, wherein a door is formed in the front side of the box body; a bracket, a temperature acquisition probe, an electronic thermometer, a direct current power supply, an ampere meter, a refrigerating system, a metal positive electrode probe, a metal negative electrode probe and a container with a top opening are fixed in the box body; a display and a power main switch are arranged on the side surface of the box body; the upper end of the metal positive electrode probe, the upper end of the metal negative electrode probe and the upper end of the temperature acquisition probe are connected with the side surface of a cross rod; the temperature acquisition probe is connected with the input end of the electronic thermometer; the metal positive electrode probe is connected with the positive pole of the direct current power supply; the metal negative electrode probe is connected with the negative pole of the direct current power supply by virtue of the ampere meter; and the output end of the ampere meter and the output end of the electronic thermometer are connected with the input end of the display. According to the device disclosed by the invention, the freezing resistance of the salt storage asphalt mixtures can be accurately measured.

Description

technical field [0001] The invention belongs to the technical field of highway pavement testing, and relates to a test device for anti-icing performance of salt-storage asphalt mixture and a test method thereof. Background technique [0002] Snow and ice on roads in winter has always been a problem that plagues road traffic safety. It usually requires a lot of manpower and material resources to remove snow on roads, so the research on actively suppressing frozen roads began. Active anti-freezing technology is to add special admixtures to the mixture during the pavement paving process, so that the pavement has the special function of actively melting snow and deicing. One of the most typical applications of active antifreeze technology is salt-storing asphalt pavement. Salt-storing asphalt pavement refers to the addition of admixtures with salt as the main active ingredient in the asphalt mixture, so that the pavement itself has the function of actively melting ice, snow and...

AI Technical Summary

Problems solved by technology

There is no lack of exploration in this area in domestic related research. Most of the proposed methods are based on measuring the salt concentration of the salt-storing asphalt mixture after soaking, and indirectly evaluating its anti-icing performance. This method is cumbersome to operate and large error

So far, there is no fast, intuitive and simple evaluation instrument and method

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