Rock
Aggregate
Cement
Concrete
Soil
Steel
Bitumen/Asphalt
Security Survey Equipment
General Items
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
FRAASS BREAKING POINT APPARATUS AZA0935
The AZA0935 Fraass Breaking Point Apparatus from Azalab is a specialized laboratory instrument designed for the accurate determination of the Fraass Breaking Point of bitumen and bituminous binders. This test is essential for evaluating the low-temperature behavior and brittleness of asphalt materials, particularly for pavements exposed to cold climatic conditions.
The Fraass Breaking Point represents the temperature at which a thin film of bitumen loses flexibility and cracks when subjected to controlled cooling and repeated flexing. Determining this temperature is critical for selecting suitable binder grades and preventing thermal cracking in asphalt pavements, thereby ensuring long-term durability and serviceability.
HARDNESS TESTER FOR MASTIC ASPHALT AZA0942
The AZA0942 Hardness Tester for Mastic Asphalt from Azalab is a precision-engineered instrument designed for the determination of penetration hardness of mastic asphalt. This essential testing device is widely used in civil engineering laboratories, road construction projects, and quality control departments to evaluate the consistency, stiffness, and workability of mastic asphalt mixtures.
Accurate hardness measurement ensures that mastic asphalt complies with project specifications and delivers long-term pavement durability, deformation resistance, and performance reliability.
MARSHALL STABILITY TEST APPARATUS AZA0953
The AZA0953 Marshall Stability Test Apparatus from AZALAB is a fundamental and widely adopted instrument in civil engineering and highway material laboratories for evaluating the performance characteristics of compacted bituminous mixtures. It forms the core equipment of the Marshall Mix Design Method, a globally recognized and extensively used procedure for asphalt concrete pavement design and quality control.
The apparatus is designed to accurately determine two critical parameters of asphalt mixtures—Marshall Stability and Marshall Flow—which together indicate the mix’s load-bearing capacity, resistance to permanent deformation, and ability to accommodate traffic-induced stresses without cracking.
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.
RING & BALL APPARATUS(SEMI AUTOMATIC) AZA0934
The AZA0934 Ring & Ball Apparatus (Semi-Automatic) from Azalab is an advanced laboratory instrument designed for the precise determination of the softening point of bitumen, asphalt binders, and related bituminous materials. This critical test evaluates the temperature susceptibility and high-temperature performance of asphalt binders, directly influencing pavement resistance to rutting and permanent deformation under hot service conditions.
By integrating the standard Ring & Ball method with semi-automatic control and detection features, the AZA0934 significantly improves accuracy, repeatability, and operational efficiency, making it ideal for modern quality control, research, and specification laboratories.
RING AND BALL APPARATUS (ELECTRICAL) AZA0933
The AZA0933 Ring & Ball Apparatus (Electrical) from Azalab is a precision laboratory instrument designed for the accurate and repeatable determination of the softening point of bitumen, asphalt binders, and other bituminous materials. This test is fundamental for evaluating the temperature susceptibility and high-temperature performance of asphalt binders, which directly influences pavement resistance to rutting and deformation.
By utilizing electrically controlled heating instead of open flame, the AZA0933 ensures consistent heating rates, improved safety, and superior test repeatability, making it an essential instrument for highway laboratories, civil engineering departments, and research institutions.
SEMI-AUTOMATIC PENETROMETER AZA0940
The AZA0940 Semi-Automatic Penetrometer from Azalab is a high-precision laboratory instrument designed for the accurate determination of the consistency of bituminous materials, including bitumen, asphalt, and other semi-solid products such as greases and waxes. Engineered to bridge the gap between manual and fully digital systems, the AZA0940 combines robust mechanical construction with digital timing and automated needle release, delivering excellent accuracy, repeatability, and ease of operation.
This instrument is widely used in civil engineering laboratories, highway authorities, asphalt plants, research institutions, and quality control laboratories, where dependable penetration testing in compliance with ASTM D5, EN 1426, and AASHTO T49 is required.
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.