Rock
Aggregate
Cement
Concrete
Soil
Steel
Bitumen/Asphalt
Security Survey Equipment
General Items
LATERAL EXTENSOMETER AZA1171
The AZA 1171 Lateral Extensometer is a precision mechanical instrument designed for accurate measurement of lateral (transverse) strain in concrete and other rigid materials during compressive testing. It is an essential accessory for civil engineering laboratories, research institutions, and quality control facilities engaged in the evaluation of concrete mechanical properties.
Specifically engineered for 150 mm diameter × 300 mm height concrete cylinders, the AZA 1171 enables precise monitoring of diameter expansion while the specimen is subjected to compressive loads. This lateral deformation data is critical for determining Poisson’s Ratio, modulus of elasticity, and understanding material failure behavior under stress.
Unlike axial extensometers, which measure vertical shortening, the AZA 1171 captures transverse expansion with high resolution. The device clamps externally onto the specimen without causing damage, ensuring non-destructive testing and repeatable measurements.
Description
Design & Construction
The extensometer consists of two movable frames pivoted at one end, allowing smooth and accurate tracking of lateral deformation. It is secured to the specimen using tightening screws, ensuring stable contact throughout the test.
A high-precision dial gauge (0.002 mm resolution, 5 mm travel) is mounted on the upper ring, with its probe resting against a hardened anvil. The zero reference can be accurately set using the anvil adjustment screw, allowing consistent baseline readings before load application.
All components are manufactured from corrosion-resistant materials, ensuring durability, dimensional stability, and long service life even under repeated testing cycles. The instrument is supplied in a wooden carrying case for safe storage and transport.
Why Use a Lateral Extensometer?
When concrete is compressed, it expands laterally. Measuring this deformation is essential for a complete understanding of material behavior.
Key Advantages:
-
Accurate determination of Poisson’s Ratio
-
High-resolution lateral strain measurement
-
External mounting with no specimen alteration
-
Reliable performance during full compression cycles
-
Compatible with most compression and universal testing machines
Key Features & Benefits
High Precision Measurement
Dial gauge with 0.002 mm resolution ensures accurate strain detection.
Non-Destructive External Mounting
Clamps directly onto the specimen without embedded sensors or adhesives.
Robust Mechanical Design
Two-frame pivoted structure provides stable and repeatable readings.
Easy Zero Adjustment
Anvil screw allows precise zero setting before testing.
Wide Compatibility
Designed for use with standard compression and universal testing machines.
Supplied Ready for Use
Delivered with dial gauge and protective wooden carrying case.
Applications
-
Determination of Poisson’s Ratio in concrete
-
Elastic modulus evaluation
-
Compression testing of concrete cylinders
-
Civil engineering laboratory testing
-
Research and academic material studies
-
Quality control in construction materials testing
Specifications
| Parameter | Value |
|---|---|
| Model | AZA 1171 – Lateral Extensometer |
| Specimen Size | 150 mm dia × 300 mm height concrete cylinder |
| Dial Gauge Range | 0–5 mm |
| Dial Gauge Resolution | 0.002 mm |
| Measuring Type | Mechanical (Dial Gauge) |
| Mounting Method | Clamp-based with tightening screws |
| Frame Construction | Corrosion-resistant steel / alloy |
| Gauge Adjustment | Anvil screw zero setting |
| Compatibility | Compression & Universal Testing Machines |
| Supply | Supplied with wooden carrying case |
| Application Area | Concrete & rigid materials testing |
Frequently Asked Questions (FAQ)
Q1: What is a lateral extensometer used for?
It measures lateral deformation of concrete specimens during compressive loading.
Q2: Which specimen size is it designed for?
It is designed for 150 mm diameter × 300 mm height concrete cylinders.
Q3: Can it be used with any compression testing machine?
Yes, it is compatible with most standard compression and universal testing machines.
Q4: Is the measurement destructive?
No. The extensometer mounts externally and does not alter the specimen.
Q5: How accurate is the measurement?
The dial gauge provides 0.002 mm resolution, ensuring high accuracy and repeatability.
Additional information
| Gauge Length |
50 mm (standard), adjustable |
|---|---|
| Resolution |
0.01 mm |
| Operating Environment |
Lab and industrial setups |
You may also like…
Related products
CONCRETE FLOW TABLE TEST SET AZA1110
AZA1110 Concrete Flow Table Test Set is a precision-engineered laboratory apparatus designed to determine the workability, consistency, and flow characteristics of fresh concrete. It is especially suitable for Self-Compacting Concrete (SCC), precast concrete, and high-consistency mixes where the traditional slump test is not effective.
This test set works by allowing a freshly mixed concrete sample to spread under controlled, repeated vertical jolts of a mechanically calibrated table. The final spread diameter of the concrete is measured to assess its flowability and uniformity.
Built with a rigid, precisely machined table surface, the AZA1110 ensures repeatable and reliable results. Its heavy-duty construction allows long-term use in demanding laboratory environments while remaining easy to clean, store, and maintain.
The apparatus complies with major international standards including IS 1199, ASTM C1437, and BS EN 12350-5, making it suitable for both domestic and international testing requirements.
CYLINDRICAL MOULD AZA1123
Purpose & Function
The cylindrical mould is used to prepare concrete specimens of standard dimensions, typically:- 150 mm diameter × 300 mm height
- 100 mm diameter × 200 mm height
- Compressive strength tests
- Split tensile strength tests
- Elastic modulus evaluations
- Durability and material behavior studies
L SHAPE BOX APPARATUS AZA1112
AZA1112 L Shape Box Apparatus is a precision testing device designed to evaluate the passing ability and flow performance of Self-Compacting Concrete (SCC) in congested reinforcement conditions. This apparatus simulates real-world scenarios such as densely reinforced beams, columns, tunnels, and bridge segments, where concrete must flow freely without segregation or blockage.
The distinctive L-shaped design creates a controlled flow path where freshly mixed SCC moves from a vertical chamber into a horizontal channel containing reinforcement bars. By measuring the concrete heights at both ends (H1 and H2), the H2/H1 ratio is calculated, providing a direct, quantitative assessment of the concrete’s ability to pass through obstructions.
Manufactured from durable, corrosion-resistant steel, AZA1112 is built for long-term laboratory and site use. It conforms to EN 12350-10 and EFNARC guidelines, ensuring global acceptance of test results.
LABOMIX CONCRETE PAN MIXER AZA1118
The AZA1118 Labomix Concrete Pan Mixer is designed for demanding, high-volume mixing operations in construction laboratories, R&D facilities, and material testing centers. Built for durability and precision, it delivers consistent blends of concrete, mortar, grout, and aggregate mixes while supporting rigorous IS/ASTM test procedures.
Engineered with a high-efficiency gear-driven transmission, it provides stable torque, low maintenance requirements, and excellent mixing uniformity. The unit is available in multiple capacities from 90 litres to 300 litres, enabling users to select suitable volume for their operational needs.
The mixer features exchangeable mixing shovels, a safe-locking automatic discharge system, and large mobility wheels that allow a single operator to handle batching, mixing, and discharging efficiently.
PLASTIC MOULDS AZA1125
The AZA1125 One-Piece Plastic Cube Mould (150 mm) from Azalab is a next-generation alternative to traditional metal cube moulds. Built from high-strength, non-deformable engineering plastic, this mould is designed to offer superior ease of use, long service life, and consistent dimensional accuracy for concrete compressive strength testing.
Its seamless, single-piece construction eliminates the need for bolts, screws, or external frames. Users simply apply demoulding oil, cast the concrete, and after curing, eject the cube using compressed air or water pressure, achieving clean and damage-free removal every time.
Compared to heavy metal moulds, the AZA1125 weighs nearly 90% less, providing clear advantages in portability, handling, and storage—making it ideal for both laboratory and on-site testing environments. Manufactured using an eco-friendly, non-polluting process, this mould supports sustainability goals in modern construction testing.
SLUMP TEST APPARATUS AZA1102
AZA1102 Slump Test Apparatus is designed for the accurate evaluation of concrete workability and consistency in both laboratory and field conditions. It is an essential quality control tool used in construction projects, civil engineering laboratories, and educational institutions.
This apparatus complies with IS 7320 and BS 1881-102 standards, ensuring reliable and standardized test results. It is primarily used to determine the slump value of fresh concrete, indicating its ease of placement, compaction, and finishing.
The set includes a durable metal slump cone manufactured to standard dimensions — 200 mm bottom diameter, 100 mm top diameter, and 300 mm height — providing dimensional accuracy and long service life. A 16 mm diameter tamping rod, 600 mm long with rounded ends, is provided to properly compact the concrete sample in layers.
The apparatus is suitable for testing concrete with aggregate sizes up to 38 mm, making it ideal for common residential, commercial, and infrastructure applications.
To improve handling and stability, the unit includes a rigid base plate with clamping arrangements and lifting handles, making it easy to use both on construction sites and in laboratories.
The AZA1102 Slump Test Apparatus is known for its simple operation, rugged construction, high accuracy, and low maintenance, making it a dependable choice for routine concrete testing.
U SHAPE BOX APPARATUS AZA1113
- Measures SCC blocking resistance through simulated rebar congestion
- Accurately indicates flowability and passing ability of SCC mixes
- Robust U-shaped two-chamber design with sliding gate
- Conforms to international SCC testing standards
- Includes precision steel rod arrangement and measuring scale
- Durable, corrosion-resistant construction for field and lab use
- Ideal for SCC mix design, approval, and continuous quality control
VEE BEE CONSISTOMETER AZA1101
AZA1101 Vee Bee Consistometer is a laboratory-grade concrete testing instrument designed for measuring the workability of stiff and low-slump concrete mixes with high accuracy. It is widely used in construction material testing laboratories, civil engineering institutes, infrastructure projects, and quality control departments.
This equipment performs both slump test and Vee Bee time test, providing dual accuracy in concrete consistency evaluation. It is especially ideal for testing dry, roller-compacted concrete and pavement concrete mixes, where traditional slump tests alone are not sufficient.
The unit is equipped with a precision vibrating table that ensures uniform vibration and repeatable testing results. It comes as a complete set including a standard slump cone, transparent cylindrical container, graduated rod with metal disc, and a powerful vibration unit.
Manufactured from heavy-duty, powder-coated steel, the AZA1101 offers excellent durability and stable performance even under continuous laboratory use. The apparatus is designed and built in compliance with IS 1199 and ASTM C1170 standards, ensuring reliable, repeatable, and internationally accepted test results.
Its easy-to-use design, low maintenance requirement, and robust construction make the AZA1101 a dependable solution for professionals involved in construction material testing and concrete quality control.