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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
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
DIGITAL PENETROMETER AZA0939
The AZA0939 Digital Penetrometer from Azalab is an advanced, high-precision laboratory instrument designed for the accurate determination of the consistency of bituminous materials, including bitumen, asphalt, greases, waxes, petroleum jelly, and other semi-solid substances. Engineered for laboratories that demand maximum accuracy, repeatability, and ease of operation, the AZA0939 combines classical penetration testing principles with modern digital measurement and automated timing.
This instrument is widely used in civil engineering laboratories, road construction authorities, asphalt plants, petroleum laboratories, research institutions, and quality control departments, where strict compliance with international standards such as ASTM D5, EN 1426, AASHTO T49, IP 49, and IS 1203 is required.
ELASTIC RECOVERY MOULD AZA0958
The AZA0958 Elastic Recovery Mould is a precision-engineered testing accessory used in bitumen ductility and elastic recovery tests, particularly for evaluating polymer-modified bitumen (PMB) and elastomer-modified binders. It plays a critical role in determining the elastic behavior of bituminous binders after elongation, which directly influences pavement performance under traffic loads and temperature variations.
Elastic recovery is a key parameter for modern road construction materials, especially where enhanced flexibility, crack resistance, and rutting resistance are required. The AZA0958 mould ensures the formation of standardized, dimensionally accurate specimens, enabling reliable and repeatable elastic recovery measurements in accordance with international standards.
FILTERLESS CENTIFUGE EXTRACTOR AZA0947
REFRIGERATED DUCTILITY TEST AZA0957
The AZA0957 Refrigerated Ductility Testing Apparatus from AZALAB is a specialized laboratory instrument designed to determine the ductility of asphalt binders and bituminous materials at low temperatures. This test is critically important for evaluating the performance of asphalt pavements in cold and variable climatic conditions, where thermal contraction can lead to cracking and premature pavement failure.
Ductility, defined as the distance a bituminous binder can be stretched under tensile stress before rupture, is a key indicator of binder flexibility. At low temperatures, asphalt binders become increasingly stiff and brittle. The AZA0957 enables engineers and material technologists to accurately assess a binder’s resistance to thermal cracking, ensuring the selection of materials suitable for cold climates and long-term pavement durability.
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.
SOLVENT RECOVERY UNIT AZA0949
WATER IN BITUMINOUS MATERIAL (DEAN-STARK) AZA0936
The AZA0936 Water in Bituminous Material (Dean–Stark) Apparatus from Azalab is a precision laboratory system designed for the accurate determination of water content in bituminous materials, including asphalt, road oils, cut-back asphalts, and related petroleum-based binders.
Water contamination in bitumen can significantly degrade material performance by causing poor adhesion to aggregates, stripping, foaming during mixing, and reduced pavement durability. Using the internationally accepted Dean–Stark azeotropic distillation method, the AZA0936 provides reliable, repeatable, and standard-compliant moisture determination, making it essential for quality control in road construction, civil engineering laboratories, and bitumen production facilities.
