Conductive asphalt concrete resistance test method

Abstract

The invention relates to a resistance testing method of conductive asphalt concrete for roads. A resistance testing method of conductive asphalt concrete is characterized in that it comprises the following steps: 1) preparation of testing device: by test mold (1), first electrode (2), first steel dividing plate (3), support Block (4), the second steel partition (5), the second electrode (6), the first wire (7), the second wire (8), and the resistance measuring instrument constitute the test device; 2) according to the first zone, The total amount of conductive asphalt concrete needed in Zone II, the conductive asphalt concrete to be tested is evenly packed into Zone I and Zone II in the test mold (1); 3) according to the required amount of Zone III For the total amount of conductive asphalt concrete, the hot-mixed conductive asphalt concrete to be tested is evenly loaded into the third area of ​​the test mold (1), and demolded after 24 hours of curing at room temperature; 4) Connect the input end of the resistance measuring instrument to the first The wire (7) is connected with the second wire (8), and the resistance value of the conductive asphalt concrete is measured. The invention has the characteristics of simplicity and high accuracy.

Description

technical field [0001] The invention belongs to the field of material science and engineering, and in particular relates to a resistance testing method of conductive asphalt concrete for roads. technical background [0002] Conductive asphalt concrete is a new type of road functional material. Adding a certain amount of conductive phase materials into asphalt concrete can greatly improve its electrical properties, thus becoming a conductor with good electrical conductivity. This makes asphalt concrete not only be used as a building structure material, but also play an important role in electrical, electronic, electromagnetic interference shielding, industrial anti-static, electric heater, road self-diagnosis and so on. In the research of the electrical properties and sensitive characteristics of conductive asphalt concrete, the main measurement object is the resistance value of the material. The electrode is the bridge connecting the tested sample and the test instrument. ...

AI Technical Summary

Problems solved by technology

Among these methods, the copper pressing method and the external graphite cloth method have a great influence on the surface contact resistance, and the accuracy is not high; the silver coating method has the highest accuracy, but the actual price is expensive, which limits its popularization and application; the embedded electrode method is Low cost, good test accuracy, and good engineering simulation, it is a commonly used cement concrete test method

There are few studies on conductive asphalt concrete in my country, and its resistance test method has not been reported. Asphalt concrete is formed by compaction, rolling, static pressure, and rotary compaction, while cement concrete is formed without external force. , it is impossible to continue to use the test method of cement concrete embedded electrodes

Images