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Views: 0 Author: Site Editor Publish Time: 2025-05-31 Origin: Site
Introduction
Asphalt pavements rely on carefully balanced binder properties and aggregate interactions to deliver long-term performance under traffic and weather cycles. The Asphalt Analysis Instrument from Changsha Friend Experimental Analysis Instrument Co., Ltd. integrates binder rheology, aggregate gradation, and mixture volumetrics in a single, modular platform.
Testing Capabilities
Dynamic Shear Rheometry: Measures binder stiffness and phase angle across temperatures (−10 °C to 80 °C), guiding selection of high-performance binders.
Aggregate Gradation Analyzer: Automated sieve shaker with laser diffraction optics quantifies particle-size distribution in real time.
Volumetric Mix Evaluation: A density and voids module determines air voids, VMA (voids in mineral aggregate), and VFA (voids filled with asphalt) via pressure-volume displacement.
Instrument Highlights
Robotic Sample Handling: Moves specimens between rheometer, sieve, and volumetric cell to streamline workflow.
Environmental Chamber: Controls humidity and temperature for aggregate moisture conditioning.
Centralized Data Server: Consolidates rheology curves, gradation reports, and mix design outputs into a unified database.
Applications
Transportation departments, asphalt producers, and research institutes use this instrument to develop mix designs that balance rutting resistance, fatigue life, and thermal cracking potential.
Best Practices
– Condition aggregates at specified relative humidity (50% ± 5%) before gradation testing.
– Verify rheometer torque calibration with NIST-traceable standards.
– Clean volumetric cells with solvent and bake to 105 °C before each use.
This integrated asphalt analysis solution accelerates mix optimization, improves pavement performance forecasting, and reduces trial-and-error in plant operation.
