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General Items
CONCRETE: PAD CAPS AND RETAINER RINGS AZA1162
The Azalab Concrete Pad Caps & Retainer Rings Set is engineered to deliver precise, repeatable compressive strength testing for concrete cylinders, fully compliant with ASTM C1231 and AASHTO T22 standards. Designed as a superior alternative to sulfur capping, this system ensures safe, clean, and efficient unbonded capping using neoprene pad inserts.
High-Precision Retainer Rings
Manufactured from plated high-alloy steel, the retainer rings are corrosion-resistant and capable of handling repeated load cycles without deformation. Each ring is precision-machined to a tolerance of ≤ 0.002″, ensuring flat, uniform bearing surfaces for consistent load transfer during testing.
Neoprene Pad Inserts
Durable neoprene pads fit securely within the retainer rings and adapt to minor surface irregularities at the ends of concrete cylinders. The elastomeric material provides uniform stress distribution and high repeatability across all tests. Pads are available in multiple durometers (50, 60, 70) depending on the compressive strength range.
Universal Compatibility
The pad cap system is suitable for standard concrete cylinder sizes used in laboratories and field QA/QC testing, including 4″ × 8″ and 6″ × 12″ specimens. Rings are reusable, and pads are replaceable, providing long-term operational efficiency.
Ideal For
• Concrete testing laboratories
• Field quality control/quality assurance
• Precast and ready-mix production plants
• Research and education institutions
Description
Specifications
| Component | Details |
|---|---|
| Standard Compliance | ASTM C1231 / AASHTO T22 |
| Retainer Ring Material | Plated High-Alloy Steel (Rust- & Fatigue-Resistant) |
| Pad Material | Tough Neoprene Elastomer |
| Pad Durometer Options | 50, 60, 70 (based on load range) |
| Machining Tolerance | ≤ 0.002″ bearing surface flatness |
| Compatibility | 4″ × 8″ and 6″ × 12″ concrete cylinders |
| Package Contents | 2 Retainer Rings + 2 Neoprene Pads |
| Reusability | Rings reusable; pads replaceable |
Frequently Asked Questions (FAQ)
Q1: What is the main advantage over sulfur capping?
Neoprene pad capping is faster, safer, and cleaner. It removes the risk of molten sulfur, reduces preparation time, and improves testing consistency.
Q2: Are the neoprene pads reusable?
Pads typically last 100–200 tests, depending on load range and surface wear.
Q3: Which durometer pad should be selected?
Selection is based on concrete strength. Higher strength concrete requires higher durometer pads as per ASTM C1231 recommendations.
Q4: Will the retainer rings deform or corrode over time?
No. The plated high-alloy steel construction resists corrosion and fatigue, even under frequent loading cycles.
Q5: Do you supply replacement pads?
Yes. Azalab offers replacement neoprene pads in all durometer options.
Related products
BEAM MOULD AZA1124
Purpose & Importance
Flexural strength testing evaluates a concrete beam’s ability to resist bending stress. Standards such as IS 516, ASTM C78, and BS EN 12390-5 specify strict guidelines for specimen dimensions and surface finish. The AZA1124 Beam Mould enables users to produce uniform, high-quality concrete beams with precise cross-sections, ensuring reliability and compliance during flexural strength evaluation.Beams cast from AZA1124 are used for:
- Flexural tensile strength testing
- Load-bearing capacity studies
- Structural behavior simulations
- R&D on mix designs and reinforcement additives
Ideal for:
- Civil engineering research laboratories
- Cement product quality assurance departments
- Construction material testing centers
- Technical universities and engineering institutions
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
KELLEY BALL PENETRATION APPARATUS AZA1106
- Direct workability assessment using steel ball penetration
- Fully compliant with ASTM C360
- Portable and rugged for field and lab testing
- Heavy-duty steel/aluminum frame for long-term durability
- Built-in scale for accurate depth measurement
- Simple setup and low maintenance
- Provides a reliable alternative to the slump test
LABORATORY PAN MIXER (CAPACITY 40 LTRS) AZA1117
Key Features
- 40-litre mixing capacity ideal for cube specimen preparation
- Supports aggregate sizes up to 20 mm
- 2 HP motor, 960 RPM, 3-phase for heavy-duty mixing
- Adjustable steel blades for both dry and wet mix uniformity
- Portable design with wheels for easy movement
- Full-access drum lid for safe loading, pouring, and cleaning
- Gear-driven system for uniform, high-consistency mixing
- Easy maintenance and corrosion-resistant finish
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
