High Accuracy Pavement Material Wear Fatigue Tester Machine 1 Year Warranty 220V

The instrument is a fatigue load dynamic water erosion coupling testing machine, mainly used to achieve the fatigue load generated by wheel rolling and compaction, and simulate the dynamic water erosion effect on the road surface under the action of wheel compaction on rainy days with accumulated water on the road surface.

The fatigue load is formed by the rolling of two installed wheels, and the dynamic water flushing force is provided by the high-pressure water gun connected to the shaft next to the wheels.
The developed dynamic fatigue load transient dynamic water coupling application device is decomposed into six main modules: main frame, dynamic water test chamber, loading system, water pressure supply system, drive system, and control system.

The dynamic water test chamber can load 5 concrete small beam specimens (40cm × 10cm × 10cm) simultaneously.

The wheels are made of rubber tires, which are a set of two connected by bearings and can rotate freely. After multiple sets of tire comparison tests,

Add a layer of solid rubber 1.5cm thick on the steel wheel as the test wheel, with a width of 6.5cm, a diameter of 20cm, and a track width of 10cm. The wheel loading is close to three-point fatigue loading, simulating four point bending fatigue loading.

The water pressure supply system consists of a water storage tank, water pump, nozzle, water pipe, etc. After turning on the water pump, a certain pressure of water can be sprayed to flush the specimen.

During the experiment, adjusting the valve of the water pump can achieve the required dynamic water pressure at the nozzle, with an adjustable range of 0-1MPa and an accuracy of 0.05MPa. The water sprayed by the nozzle is returned to the water storage tank through the outlet of the dynamic water test box, achieving the circulation of water.
The driving system includes a driving motor, a crank, and a connecting rod. The connecting rod is connected to the steel plate where the wheel is located. The driving shaft is similar to the driving shaft of the frog, which drives the wheel to perform reciprocating motion through rotation, achieving dynamic fatigue load repeated rolling. The equipment operates at a frequency of 1Hz.
The force applied to the specimen must be 0.5 or 0.7 times the flexural tensile strength of the concrete, and the loading pressure must be adjustable within the range of 10-25KN. The water pressure for dynamic water flushing is 0.25MPa and 0.5MPa, and it must also be adjustable.