LS-EXT-A Automatic Closed-Loop Asphalt Analyzer
LS-EXT-A Automatic Closed-Loop Asphalt Analyzer is a asphalt content ignition furnace and asphalt extraction equipment for ASTM D2172, AASHTO T164 workflows. Employing a differential mass method for precise binder content determination, the system simultaneously recovers extracted binder for subsequent performance evaluation — providing critical data support for reclaimed asphalt pavement (RAP) recycling programs. The integrated closed-loop architecture encompasses washing, centrifugal separation, drying, and solvent distillation/recovery subsystems, ensuring the entire extraction process is completed within a sealed environment for maximum operator safety and minimal solvent emissions.
Fully Sealed Closed-Loop Operation
The entire extraction and solvent recovery process occurs within a hermetically sealed system, effectively eliminating toxic solvent vapor exposure to laboratory personnel. This architecture drastically reduces solvent consumption and ensures full compliance with modern HSE (Health, Safety & Environment) regulations.
Ultrasonic-Assisted Heated Washing
The washing chamber integrates a high-power heating element with an industrial ultrasonic transducer to dramatically accelerate binder dissolution. This dual-action cleaning mechanism ensures thorough separation even with highly viscous polymer-modified and rubberized asphalt binders.
High-Speed 8000+ RPM Centrifuge
The ultra-high-speed centrifuge (≥ 8000 r/min) delivers exceptional separation efficiency for mineral filler particles down to the 0.075 mm fraction. A real-time observation window at the centrifuge inlet allows operators to visually monitor solution clarity during the separation cycle.
Integrated Drying & Aggregate Recovery
The built-in drying subsystem automatically dehydrates recovered aggregates and mineral filler upon extraction completion, enabling immediate weighing for binder content calculation. Collected aggregates are ready for subsequent sieve analysis without any additional sample preparation.
Automated Solvent Distillation & Recovery
A high-efficiency distillation system — comprising a mixing chamber, solvent reservoir, and advanced closed-circuit cooling unit — automatically reclaims and purifies used solvent for reuse. The cooling system outperforms traditional tap-water cooling methods while conserving water resources.
Vacuum Rotary Evaporator Sampling (Optional)
An optional vacuum rotary evaporator interface enables direct extraction of binder-solvent samples prior to the washing cycle, with a configurable pre-soak period of 3 to 30 minutes. This facilitates downstream recovered binder performance testing (viscosity, DSR, BBR) for RAP evaluation.
Application & Search Guide
Asphalt content ignition and extraction testing
LS-EXT-A Automatic Closed-Loop Asphalt Analyzer is asphalt content and asphalt extraction equipment for binder content, ignition, solvent extraction, aggregate recovery, and gradation verification under ASTM D2172, AASHTO T164. It supports asphalt QC laboratories that need traceable binder content results and recovered aggregate for mix compliance.
What is LS-EXT-A Automatic Closed-Loop Asphalt Analyzer used for?
LS-EXT-A Automatic Closed-Loop Asphalt Analyzer is used for asphalt content and extraction workflows in civil engineering materials laboratories, quality control labs, research programs, and construction material acceptance testing.
Which standards does LS-EXT-A support?
LS-EXT-A supports ASTM D2172, AASHTO T164. Lithostek can also configure reporting fields, accessories, and calibration documents around local project or laboratory requirements.
Can Lithostek configure LS-EXT-A for my laboratory?
Yes. Lithostek application engineers can review specimen format, target standards, throughput, power supply, data output, and training requirements before quoting a suitable configuration.
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