Hamburg Wheel-Track Tester HTHY-324

Standard

AASHTO T 324

Product Introduction

This equipment is used to evaluate the rutting resistance and moisture susceptibility of hot-mix asphalt (HMA). Under repeated moving-wheel loading, the permanent deformation of the asphalt mixture is measured. Rut depth and the number of wheel passes at failure are used to evaluate premature failure caused by inadequate aggregate structure, insufficient binder strength, or moisture damage. Since the specimens can be tested while fully submerged in water at a controlled temperature, the equipment can also be used to evaluate the effects of moisture damage on asphalt mixture performance.

Key Features

• Evaluates the rutting resistance and moisture susceptibility of hot-mix asphalt (HMA).
• Equipped with high-precision displacement sensors, providing an accuracy of better than ±0.01 mm over the full measuring range.
• Automatic temperature control, with automatic generation and storage of test results.
• Uses high-accuracy temperature sensors for temperature measurement, providing a wide control range, high accuracy, and excellent stability.
• Uses PWM-based PID temperature control to minimize temperature overshoot.
• Temperature and displacement sensors are linearly calibrated to ensure good linearity over the full measurement range.
• During data acquisition, deformation is measured at 11 points within a 210 mm area symmetrically distributed about the center of the specimen mold. The average deformation is used for calculating the test results.
• Two test termination modes are available: automatic stopping based on the specified number of wheel passes or the specified rut depth.
• Features an open worktable design for convenient removal of the specimen mold during testing.
• Constructed entirely of high-quality stainless steel for a durable, clean, and easy-to-maintain design.

Technical Specifications