Rock
Aggregate
Cement
Concrete
Soil
Steel
Bitumen/Asphalt
Security Survey Equipment
General Items
CALIFORNIA BEARING RATIO APPARATUS (BS VERSION MOULD) AZA0911
The AZA0911 California Bearing Ratio (CBR) Apparatus – BS Version Mould from Azalab is a laboratory-grade testing system designed to determine the bearing capacity and strength of subgrade soils used in pavement, highway, runway, and foundation construction. The CBR test is a globally recognized method for soil strength classification and is especially critical for road and pavement design.
This apparatus is manufactured in accordance with BS 1377, featuring a British Standard mould configuration that ensures accurate, repeatable, and internationally acceptable test results. The AZA0911 evaluates soil resistance to penetration under controlled compaction and loading conditions, closely simulating field performance.
Description
Applications
The AZA0911 CBR Apparatus is widely used for:
-
Road and pavement foundation design
-
Subgrade and base course strength evaluation
-
Airport runway and heavy-duty pavement studies
-
Soil compaction quality control
-
Research, teaching, and training in geotechnical laboratories
The test determines the CBR value, which represents the percentage resistance of the soil compared to a standard crushed stone, forming the basis for pavement thickness design.
Construction & Features
The BS version mould assembly is designed strictly as per British Standard specifications.
BS Standard Mould Construction:
-
Internal diameter: 152 mm
-
Height: 178 mm (with collar)
-
Detachable base plate
-
Removable extension collar
Standard Supply Includes:
-
BS-standard CBR mould with base plate and collar
-
Penetration piston (50 mm diameter)
-
Dial gauge or optional digital displacement indicator
-
Annular and slotted surcharge weights
-
Spacer disc and perforated plate
-
Optional soaking tank for soaked CBR testing
-
Compatible with manual or motorised loading frames
All components are manufactured from corrosion-resistant mild steel or cast iron, ensuring dimensional stability, long service life, and consistent testing accuracy.
Standards & Compliance
The AZA0911 apparatus complies with the following standards:
-
BS 1377 (Part 4) – Methods of Test for Soils for Civil Engineering Purposes
-
ASTM D1883 – CBR of Laboratory-Compacted Soils
-
IS 2720 (Part 16) – Laboratory Determination of CBR
This allows the apparatus to be used confidently across international projects requiring BS, ASTM, or IS compliance.
Key Benefits
-
Accurate determination of subgrade soil bearing strength
-
Fully compliant with British Standard CBR requirements
-
Suitable for soaked and unsoaked testing methods
-
Compatible with manual and motorised loading frames
-
Rugged laboratory construction for repeatable results
Specifications
| Feature | Specification |
|---|---|
| Model | AZA0911 |
| Product Type | CBR Apparatus – BS Version Mould |
| Mould Internal Diameter | 152 mm (BS Standard) |
| Mould Height | 178 mm (with collar) |
| Mould Material | Mild Steel / Cast Iron |
| Penetration Piston Diameter | 50 mm |
| Penetration Measurement | Dial Gauge / Digital (0.01 mm resolution) |
| Loading Frame Capacity | 50 kN or 100 kN (manual or motorised) |
| Surcharge Weights | Annular / Slotted – 2.5 kg & 5 kg |
| Testing Type | Soaked and Unsoaked CBR |
| Standards Compliance | BS 1377, ASTM D1883, IS 2720 (Part 16) |
| Application | Laboratory soil testing for CBR |
Frequently Asked Questions (FAQ)
Q1: What is the function of a CBR apparatus?
It measures the bearing capacity of soil by evaluating its resistance to penetration under standardized loading conditions.
Q2: Why use the BS version mould?
The BS version is required for projects and laboratories that follow BS 1377 procedures, particularly in UK-based and international infrastructure projects.
Q3: Can both soaked and unsoaked tests be performed?
Yes. With the addition of a soaking tank, soaked CBR tests can be carried out to simulate worst-case moisture conditions.
Q4: What loading frames are compatible?
Both hand-operated and motorised loading frames with 50–100 kN capacity are suitable.
Q5: Is this apparatus suitable for field testing?
No. AZA0911 is designed exclusively for controlled laboratory environments.
Additional information
| Mould Diameter |
152 mm (BS Standard) |
|---|---|
| Mould Height |
178 mm (with collar) |
| Material |
Mild Steel / Cast Iron |
| Loading Frame Capacity |
50 kN or 100 kN (Manual/Motorized) |
You may also like…
ADVANCED TRIAXIAL TEST SYSTEM (UU–CU–CD CAPABLE) AZA1296
The AZA LAB Advanced Triaxial Test System AZA1296 is a fully automated geotechnical laboratory testing system designed for accurate determination of soil shear strength and deformation characteristics under controlled stress and drainage conditions.
The system supports all major triaxial compression testing modes including:
- Unconsolidated Undrained (UU)
- Consolidated Undrained (CU)
- Consolidated Drained (CD)
Engineered for high-precision geotechnical analysis, the AZA1296 replicates in-situ soil stress conditions to evaluate soil stability, strength behavior, pore pressure response, and failure mechanisms under axial loading.
The system integrates servo-controlled loading, automatic pressure regulation, real-time pore pressure monitoring, automated data acquisition, and advanced software analysis, making it ideal for geotechnical laboratories, civil engineering projects, infrastructure development, research institutions, and academic applications.
AIR BAG TRAINER AZA1246
The AZA1246 AZALAB Air Bag Trainer is a comprehensive educational training platform designed to demonstrate the structure, operation, diagnostics, and fault analysis of modern automotive airbag systems, also known as Supplemental Restraint Systems (SRS). Built using OEM automotive components, this trainer delivers a realistic learning experience while maintaining complete operational safety.
This system is ideally suited for automotive engineering colleges, ITIs, polytechnic institutes, vocational training centers, and service technician programs, enabling both theoretical instruction and hands-on diagnostics practice.
ALTERNATOR TRAINER AZA1247
The AZA1247 AZALAB Alternator Trainer is a hands-on automotive electrical training system designed to demonstrate the working principles, construction, and diagnostics of an automotive alternator with external voltage regulation. Built using OEM automotive components, this trainer provides a realistic and safe learning platform for students, technicians, and trainees to understand vehicle charging systems in depth.
This system is ideal for automotive engineering institutes, ITIs, polytechnics, vocational training centers, and service technician programs, supporting both theoretical instruction and practical experimentation.
ARC WELDING MACHINE AZA1234
The AZA1234 Arc Welding Machine by A Z A Lab is a high-performance industrial welding solution engineered for demanding fabrication, maintenance, and structural welding applications. Designed using advanced inverter technology, this machine delivers superior arc stability, high efficiency, and reliable welding performance across a wide range of electrode types and materials.
With an inverter frequency of up to 20 kHz, the AZA1234 ensures fast dynamic response, reduced spatter, and excellent weld bead appearance. Its robust electrical design supports a high duty cycle, allowing continuous operation under heavy loads while maintaining consistent welding output—even with output cable lengths of up to 100 meters.
AUOTFLASH AUTOMATED ABEL FLASH POINT ANALYZER AZA1277
The AutoFlash-1277 (Model: AZA1277) from AZA Lab is a fully automated, microcontroller-based Abel Flash Point Analyzer designed for accurate, safe, and repeatable determination of flash points of combustible liquids. Engineered to meet stringent international testing requirements, this advanced instrument conforms to IP 170, ISO 13736, and IS 1448 (Part 20) standards.
Covering a standard temperature range of –30°C to 70°C, extendable up to 110°C, the AZA1277 is ideally suited for laboratories involved in petroleum testing, petrochemical quality control, fuels research, and regulatory compliance.
AUTODIST-86 GLASS DISTILLATION UNITAZA1282
The AutoDist-86 Glass Distillation Unit (Model AZA1282) is a high-performance laboratory water distiller designed for the continuous production of high-purity distilled water.
Constructed entirely from borosilicate glass 3.3, the unit ensures zero metallic contamination, excellent thermal resistance, and long operational life. It is ideal for laboratories requiring consistent, low-conductivity distilled water for analytical, pharmaceutical, and research applications.Distillation Performance
- Distillate Output: Up to 4 L/hour (±10%)
- Suitable for routine and medium-scale laboratory demand
- Efficient removal of:
- Dissolved salts
- Heavy metals
- Organic/inorganic impurities
- Microbial contaminants
Related products
GRAIN SIZE ANALYSIS (PIPETTE METHOD) AZA0856
HEAVY COMPACTION TEST AZA0866
PLUMMET BALANCE AZA0862
RAPID MOISTURE METER AZA0874
The AZA0874 Rapid Moisture Meter from Azalab is a compact, reliable, and field-proven instrument designed for quick determination of moisture content in soils, aggregates, sand, and other granular or fine materials. It is especially suited for on-site quality control in civil engineering, road construction, earthwork compaction, and geotechnical investigations, where timely moisture data is critical for effective decision-making.
Based on the well-established calcium carbide gas pressure method, the AZA0874 delivers accurate results within minutes, eliminating delays associated with laboratory oven-drying methods. Its portable, self-contained design makes it ideal for use at remote and demanding job sites.
SEMI AUTOMATIC CONE PENETROMETER AZA0852
Principle of Operation
A soil paste prepared at known moisture content is placed in the sample cup. The standardized cone, attached to a calibrated weight, is released using the semi-automatic clutch mechanism, allowing free fall penetration into the soil. After the specified time (typically 5 seconds), the penetration depth is measured using a high-precision dial gauge. The moisture content corresponding to a penetration of 20 mm is considered the liquid limit of the soil, as defined in IS and BS standards.
SOIL CONE PENETROMETER AZA0851
Principle of Operation
A soil paste prepared at a known moisture content is placed in the sample cup. The stainless steel cone, of specified mass and angle, is allowed to penetrate the soil freely for 5 seconds. The depth of penetration (up to 20 mm) is measured using a precision depth gauge. The moisture content corresponding to 20 mm penetration is defined as the liquid limit of the soil.Standards Compliance
- IS 2720 (Part 5) – Determination of liquid and plastic limits
- ASTM D4318 – Liquid Limit, Plastic Limit, and Plasticity Index of Soils
STANDARD COMPACTION TEST AZA0864
The AZA0864 Standard Compaction Test Apparatus from Azalab is precision-engineered to perform the British Standard Proctor (Light Compaction) Test, as specified in BS 1377-4 and BS 1924-2. This apparatus is used to determine the Maximum Dry Density (MDD) and Optimum Moisture Content (OMC) of soils subjected to light compactive effort.
The test simulates field compaction achieved by light rollers and rammers and is essential for quality control of subgrades, embankments, road bases, and foundation soils. The AZA0864 is widely used in geotechnical laboratories, site investigation works, and academic institutions following British Standards.
VICKSBERG PENTROMETER (PROVING RING TYPE) AZA0870
The Vicksberg Penetrometer (Proving Ring Type) – AZA0870 by Azalab is a precision-engineered field instrument designed to determine the bearing capacity of subgrades, assess soil compaction levels, and conduct rapid shallow soil investigations. It is widely used in road construction, foundation assessment, and infrastructure site inspections where quick, reliable field results are required.
Designed for efficient single-person operation, the instrument incorporates a 100 kg (1 kN) proving ring combined with a high-sensitivity dial gauge of 0.002 mm least count, ensuring accurate and repeatable load measurements. An optical viewer is provided for clear dial visibility, even under bright outdoor conditions, making the unit ideal for on-site testing.
Whether for routine site investigations or quality control of compacted layers, the AZA0870 delivers fast, dependable, and field-ready performance.