scope of application:

This instrument is designed to measure the rutting and water sensitivity of hot-mix asphalt. It can test the permanent deformation rate of asphalt mixtures under moving loads. By measuring the rut depth and the number of loading cycles at failure, it can determine early damage caused by insufficient aggregate structure, inadequate binder strength, or water damage. Additionally, the instrument can perform a water immersion test to assess the impact of water damage on asphalt mixtures.

Performance characteristics:

1. computer control, simple and convenient operation.

2. High precision displacement sensor is adopted, and the accuracy is better than ±0.01mm at a large range.

3. Automatic temperature control, automatic generation and preservation of test results.

4. Absolute temperature sensor is used to collect temperature, with wide temperature control range, high accuracy and good stability.

5. Use PWM modulation to control the temperature PID to ensure that the temperature does not overshoot.

6. Linear modulation of temperature sensor and displacement sensor can ensure the linearity within the full range.

7. The data acquisition method is to collect 11 points in the symmetrical 210mm area of the test mold center and calculate the average deformation as the deformation when calculating the test results.

8. There are two options for stopping the test, stop by time or stop by circle.

9. Open workbench is adopted to facilitate the installation and removal of test molds.

10. The whole machine is made of high quality stainless steel, which is beautiful and easy to clean.

technical parameter:

1. Displacement sensor: (0~100) mm accuracy ±0.01mm;

    Displacement sensor: (0~100) mm accuracy ±0.01mm;

2. temperature range: wet temperature: 25℃~70℃; dry temperature: room temperature ~70℃; accuracy ±0.5℃;

3. Test wheel: steel wheel: electric movable, φ203.2mm*47mm;

    Rubber wheel: electric movable, φ200mm*50mm*15mm;

4. test wheel speed: (15~55) times/min;

5. Walking distance: (230±10)mm;

6. Test time: (0~480) min;

7. Number of tests: (0~30000);

8. contact pressure: (0.7±0.05) Mpa;

9. Test mold size: Circular test piece: The installation system includes two 150mm diameter high density polyethylene molds placed in a stainless steel tray to fix the asphalt mixture test piece;

    Rectangular specimen: length 320mm, width 260mm, thickness between 38mm and 100mm;

10. Working mode: water immersion test and non-water immersion test;

11. Number of temperature measurement channels: 2;

12. Working power supply: 220V 50Hz.