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CENTRIFUGE EXTRACTOR (MOTORISED) AZA0946
The AZA0946 Motorised Centrifuge Extractor from AZALAB is a robust, high-precision laboratory instrument designed for the quantitative determination of bitumen (asphalt) content in hot-mix bituminous paving mixtures and pavement samples. The motorised configuration provides automated, repeatable, and accurate extraction, eliminating the variability and operator fatigue associated with hand-operated units.
Widely used in road construction quality control, mix design verification, and research laboratories, the AZA0946 is particularly suited to Indian highway and infrastructure projects where compliance with MoRTH and internationally accepted test standards is essential for pavement performance and durability.
Description
Working Principle
The extraction process is based on solvent dissolution combined with centrifugal force:
- A known weight of bituminous mix is placed in a removable, precision‑machined aluminum rotor bowl fitted with filter paper.
- A suitable solvent (e.g., Trichloroethylene, Methylene Chloride, or n‑Propyl Bromide) is added to dissolve the bitumen binder.
- The motorised centrifuge rotates the bowl at controlled high speed, forcing the bitumen–solvent solution through the filter paper and out through the drain, while aggregates are retained inside the bowl.
- The process is repeated with fresh solvent until the aggregates are visibly clean.
- The aggregates are dried and weighed; bitumen content is calculated by weight difference, accounting for moisture and mineral matter.
The recovered solvent–bitumen solution can be further processed using a Solvent Recovery Unit (e.g., AZA0949) for solvent reuse and optional bitumen recovery.
Key Features
- Motorised & Automatic Operation – Ensures consistent extraction cycles with minimal operator intervention
- Electronic Speed Control with AC Drive – Smooth ramp‑up from 0 to 3600 RPM as required by standards
- Digital Speed Display – Real‑time monitoring of frequency and rotational speed
- Precision‑Machined Aluminum Bowl – Balanced for stable, vibration‑free high‑speed operation
- Robust Aluminum Housing – Cylindrical enclosure resistant to solvents and laboratory wear
- Automatic Fast Stop – Enhances operational safety at the end of the test
- Made in India – Easy availability of spares, local service support, and project compliance
Applications
- Quality control of asphalt mixes for road and highway construction
- Verification of bituminous mix designs
- Determination of bitumen percentage in plant‑produced and field samples
- Aggregate recovery for post‑extraction sieve analysis
- Research & development in pavement engineering laboratories
Standards Compliance
- ASTM D2172 – Quantitative Extraction of Asphalt Binder from Asphalt Mixtures
- AASHTO T‑58 / T‑164 – Bitumen extraction test methods
(ASTM D2172 is widely accepted in Indian project specifications and laboratory accreditations.)
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AZA0946 |
| Operation | Motorised / Automatic |
| Test Method | Centrifugal Extraction of Bitumen |
| Capacity Options | 1500 g or 3000 g |
| Rotor Bowl | Removable, precision‑machined aluminum |
| Housing | Cylindrical aluminum enclosure |
| Motor | Electric motor with AC drive |
| Speed Range | 0 – 3600 RPM |
| Speed Monitoring | Digital display |
| Safety Feature | Automatic fast stop |
| Power Supply | 230 V AC, Single Phase, 50 Hz |
| Country of Origin | Made in India |
Standard Supply
- Aluminum rotor bowl (1500 g or 3000 g, as ordered)
- Rotor bowl cover
- Collecting pan / receiver
- Spanner for locking nut
Optional / Consumable Accessories
- Filter paper discs for centrifuge extractor (e.g., AZA0945‑A)
- Approved extraction solvents
- Solvent Recovery Unit (AZA0949)
- Drying oven for aggregate
- Electronic balance
Frequently Asked Questions (FAQ)
Q1: What is the primary purpose of AZA0946?
To accurately determine the bitumen (asphalt) content in bituminous paving mixtures.
Q2: Why choose a motorised extractor over a manual one?
Motorised operation ensures consistent speed control, improved repeatability, reduced operator fatigue, and higher accuracy.
Q3: Does AZA0946 require filter paper?
Yes. Filter paper discs are used to separate dissolved bitumen from aggregate fines during extraction.
Q4: What capacities are available?
Standard options include 1500 g and 3000 g sample capacities.
Q5: Is this suitable for Indian road projects?
Yes. Compliance with ASTM D2172 and AASHTO standards makes it widely accepted in Indian highway and infrastructure projects.
Additional information
| Model Number |
AZA 0946 |
|---|---|
| Rotor Bowl |
Removable, precision-machined aluminum rotor bowl. |
| Housing |
Cylindrical aluminum box/housing. |
| Motor |
Electric motor with AC drive. |
| Safety Features |
Automatic fast stop bowl rotation at the end of the test. |
| Power Supply |
230 V A.C., Single Phase, 50 Hz. |
Related products
CENTRIFUGE EXTRACTOR (HAND OPERATED) AZA0944
Key Features
- Manual hand-crank operation (no external power required)
- Heavy-duty cast aluminum body for long life
- Removable aluminum extraction bowl for easy cleaning
- Smooth, vibration-free rotation mechanism
- Tight safety lid to prevent solvent loss
MIXER WITH HEATING JACKET AZA0955
The AZA0955 Mixer with Heating Jacket from AZALAB is a specialized laboratory apparatus engineered for the precise, uniform, and temperature-controlled mixing of materials that require elevated temperatures during blending. It is an essential instrument in civil engineering and highway material laboratories, particularly for the preparation of bituminous and asphalt mixes such as Hot Mix Asphalt (HMA).
By maintaining materials at a controlled and uniform temperature throughout the mixing process, the AZA0955 ensures optimal binder viscosity, thorough aggregate coating, and homogeneous sample preparation. This level of control is critical for producing accurate, repeatable, and representative laboratory specimens, which directly influence the reliability of asphalt mix design, quality control, and performance testing.
REFLUX EXTRACTOR 4000 GMS AZA0941
The AZA0941 Reflux Extractor 4000 GMS from Azalab is a high-efficiency laboratory apparatus designed for the quantitative determination of bitumen content in asphalt paving mixtures using the reflux extraction method. Engineered for large sample capacities up to 4000 grams, the AZA0941 is an essential instrument for civil engineering laboratories, road construction quality control, and materials testing facilities.
By ensuring accurate separation of bitumen binder from aggregates, the AZA0941 helps verify compliance with asphalt mix design specifications, directly contributing to durable, high-performance pavement construction.
SOLVENT RECOVERY UNIT AZA0949
STANDARD PENETROMETER AZA0938
The AZA0938 Standard Penetrometer from Azalab is a robust, reliable, and manually operated laboratory instrument designed for the accurate determination of the consistency of bituminous materials, including bitumen, asphalt, waxes, and greases. It is an essential testing device widely used in civil engineering laboratories, highway authorities, asphalt plants, and quality control laboratories where consistent and repeatable penetration measurements are required.
The AZA0938 operates on the classical penetration testing principle and provides a cost-effective yet precise solution for grading and classifying bituminous binders in accordance with internationally recognized standards such as ASTM D5, EN 1426, AASHTO T49, IP 49, and IS 1203.
STANDARD TAR VISCOMETER AZA0952
The AZA0952 Standard Tar Viscometer from AZALAB is a robust and widely used laboratory instrument designed for the empirical determination of viscosity of cut-back bitumen, road oils, and other fluid bituminous materials. Viscosity is one of the most critical properties governing the handling, application, and performance of bituminous binders in road construction and maintenance works.
In pavement engineering, the viscosity of cut-back bitumen and road oils directly influences their sprayability, penetration into aggregates, coating efficiency, and workability under field conditions. The AZA0952 provides a simple, reliable, and standardized efflux-time method for assessing these flow characteristics at controlled temperatures, making it an essential instrument for civil engineering laboratories, asphalt plants, and quality control departments.
STRIPPING VALUE APPARATUS AZA0943
The AZA0943 Stripping Value Apparatus from Azalab is a precision laboratory instrument designed to evaluate the adhesion characteristics of bitumen-coated aggregates when subjected to water immersion. This test is critical in assessing the resistance of aggregates to stripping, a major cause of premature pavement failure due to moisture ingress.
The apparatus is widely used in road construction quality control laboratories, civil engineering departments, research institutions, and third-party testing facilities. It fully complies with ASTM D1664 and IS 6241, ensuring acceptance across both international and Indian testing frameworks.
TRAVELLING BEAM DEVICE AZA0960
The AZA0960 Travelling Beam Device from AZALAB is a fundamental and widely accepted instrument for measuring longitudinal surface unevenness (roughness) of road pavements. It is extensively used by highway engineers, road contractors, consultants, and quality control laboratories across India for evaluating the riding quality and service condition of both newly constructed and existing roads.
Surface unevenness directly influences vehicle operating costs, passenger comfort, road safety, drainage performance, and pavement service life. The AZA0960 provides a reliable and cost-effective method for quantifying pavement roughness, enabling engineers to ensure compliance with specifications laid down by the Ministry of Road Transport & Highways (MoRTH) and the Indian Roads Congress (IRC).