1
Sample Preparation: Pour asphalt into standard sized small beams (6.35mm × 12.7mm × 101.6mm) and cure them at a constant temperature at the test temperature.
2
Loading Test: Apply a constant load (100g) in a low-temperature environment to cause three-point bending deformation of the asphalt beam.
3
Data Collection: Record the deformation curve within 60 seconds and calculate:
- Creep stiffness (S): Reflects the low-temperature deformation resistance (smaller S = better crack resistance).
- M value: Reflects stress relaxation ability (larger m = better crack resistance).
Which testing standards does this BBR device comply with?
The equipment fully complies with international standards AASHTO T313 and ASTM D6648, as well as Chinese National Standard JTG E20-2011 (T 0728). Results are directly applicable for SHRP/Superpave asphalt rating.
How is temperature control accuracy ensured?
We use a two-stage stacked mechanical refrigeration system with an accuracy of ±0.1℃. High-precision platinum resistance (PT100) sensors provide real-time fluid medium feedback.
Can modified asphalt be measured accurately?
Yes. The system utilizes precision air bearings with near-zero friction and a high-resolution LVDT (0.05um resolution) to capture even the smallest creep deformations in high-viscosity materials.
What automation features are included?
Our "One-Click Testing" automates startup, temperature control, preloading, data acquisition, and unloading. It also features intelligent zero-adjustment and real-time curve display for S stiffness and m-values.
Is daily maintenance and calibration difficult?
Maintenance is simplified with a built-in calibration module (standard beams and weights included). The liquid tank is made of high-grade 304/316 stainless steel to prevent rust from ethanol/methanol media.
What support and software updates are provided?
We provide remote video installation guidance and training. Furthermore, we offer lifelong free software updates for this model to ensure adaptation to future industry standard changes.
Zealchon Electronic
