This dynamic shear rheometer (DSR) is designed for asphalt rheology research, testing the mechanical properties of asphalt binders under varying load, temperature, and environmental conditions. The testing device evaluates the binder’s ability to resist rutting, enhance thermal stability, improve aging resilience, and reduce fatigue cracking by analyzing both the non-recoverable (adhesive) and recoverable (elastic) properties of asphalt. Using measurements of dynamic shear modulus and phase angle, the dynamic shear rheometer assesses asphalt performance in temperatures ranging from 5°C to 85°C. These tests are crucial for predicting how asphalt will behave during real-world applications such as road paving and heavy traffic loads.

• Servo motor with ultra-low inertia

  Ensures precise control of positioning and speed through a torque system without teeth

  The coreless motor design enables rapid adjustments in torque and speed, ensuring quick responses to changes

  Capable of delivering significant torque and power in relation to its compact size

  Guarantees a linear relationship between current and torque, and between voltage and speed for smooth operation

• High-precision sensor system

  The optical encoder provides high-resolution measurement of rotational angular displacement and velocity, with a resolution of 10⁻⁴ rad

  The normal force sensor is highly sensitive, ensuring accurate and fast measurement and control of forces

  The torque sensor delivers precise readings of rotor torque, contributing to highly accurate measurements

  The precision grating system allows for accurate measurement and control of vertical movements, with a resolution of 0.1μm

• Temperature control system

  Utilizes Peltier elements in both upper and lower clamps, along with high-resolution sensors, to maintain stable and precise temperature control of samples

  Features a simple, one-step plug design for connecting power, communication, and fluids, providing efficient setup and secure connections

• Compact integrated design

  The design integrates all necessary components, including mechanics, power supply, control systems, and display, into a small and highly functional unit

• Advanced software

  Displays real-time data on oscillation, torque, and normal force, with the ability to generate rheological modulus parameter curves using time-temperature superposition (TTS)

  The software can be customized to suit specific testing and data analysis requirements, providing flexibility for various user needs