The Adjustable Centrifugal Asphalt Mixture Extractor is a high-precision, lab-grade testing instrument engineered for fast and accurate separation of bitumen from aggregate in asphalt mixtures. Designed to meet global industry standards (JTG 3410-2025 T0722-2025, ASTM D8159, EN 12697-1), it is the go-to solution for determining bitumen content, oil-stone ratio, and aggregate gradation in hot-mix asphalt (HMA), modified asphalt, and pavement core samples. Ideal for highway labs, construction quality control, asphalt plants, and research institutions, this adjustable centrifugal extractor delivers reliable, repeatable results while cutting test time by up to 10x compared to traditional distillation methods.

Technical Specifications

Key Applications & Uses

• Bitumen Content Testing: Precisely measure the percentage of bitumen in asphalt mixtures to verify mix design compliance and production quality.
• Aggregate Gradation Analysis: Separate and analyze aggregate particle size distribution for quality assurance in road construction.
• Pavement Quality Control: Test field samples to confirm proper bitumen dosage and prevent premature pavement failure (rutting, cracking).
• R&D & Education: Support asphalt material research, mix design optimization, and academic lab training.
• Compliance Testing: Meet requirements for highway project approval, third-party inspection, and material certification.

Working Principle

The extractor uses high-speed centrifugal force to separate bitumen from aggregate:

1. Immerse asphalt sample in solvent (trichloroethylene) to dissolve bitumen.
2. Load the mixture into the stainless steel centrifugal bowl with filter paper.
3. Set adjustable speed and time via digital control; the servo motor drives the bowl to generate strong centrifugal force.
4. Bitumen-solvent solution filters through the paper and drains into the collection tank, while aggregate remains in the bowl.
5. Repeat washing until the solution is clear; calculate bitumen content by weighing the dry aggregate.

Standout Features

✅ Infinitely Adjustable Speed (0–3600 RPM): Customize rotation for different asphalt types (conventional, modified, recycled) and ensure optimal separation efficiency.

✅ JTG 3410-2025 & ASTM Compliant: Fully meets T0722-2025, ASTM D8159, and EN 12697-1 standards for accurate, audit-ready test data.

✅ Digital Precision Control: Touchscreen panel for setting time, speed, and auto-stop; real-time monitoring reduces human error.

✅ Heavy-Duty Stainless Steel Build: Corrosion-resistant chamber, bowl, and collection tank for long-term use with harsh solvents.

✅ Safe & Efficient Operation: Automatic brake, lid lock, and leak-proof design; low noise (<70dB) and compact footprint save lab space.

✅ Fast Extraction & Solvent Recovery: Cuts test time to 30–60 minutes; integrated collection system minimizes solvent waste.

✅ Easy Maintenance: Flip-top lid for quick sample loading/cleaning; detachable parts for hassle-free upkeep.

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