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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.
INITIAL SURFACE ABSORPTION TEST (ISAT) APPARATUS AZA1108
AZA1108 ISAT Apparatus is a precision-engineered testing instrument designed to measure the Initial Surface Absorption of hardened concrete. This test is essential for evaluating the durability of concrete by determining how quickly water penetrates the surface under controlled conditions. The apparatus is widely used in civil engineering laboratories and quality control departments to assess permeability and long-term performance of concrete structures exposed to moisture.
Built with a high-accuracy capillary tube system, the AZA1108 maintains a constant water head over a defined test area and records the volume of water absorbed over specific time intervals — typically at 10, 30, and 60 minutes. The readings obtained help engineers understand the surface porosity of concrete, which is a critical indicator of resistance against weathering, chloride ingress, corrosion of reinforcement, and environmental deterioration.
Designed in compliance with BS 1881-208, this apparatus ensures reliable, repeatable, and standard-compliant results. Its sturdy, rust-proof construction and easy-to-use configuration make it ideal for both routine testing and advanced durability studies in construction material laboratories.
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.
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 CUBE MOULD AZA1126
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.
POCKET CONCRETE PENETROMETER AZA1114
- Measures Early Setting & Strength of concrete and mortar
- Direct Penetration Reading via spring-loaded plunger
- Dual Units: MPa or psi
- ASTM C403 & IS 8142 Compliant
- Compact, Portable & Field-Ready
- Includes Carrying Case & Calibration Chart
