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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
COMPACTION FACTOR APPARATUS AZA1107
- Precision measurement of compaction factor for dry and stiff concrete
- Double-hopper system with smooth trap release
- Conforms to IS 1199 and BS 1881 standards
- Suitable for precast plants, RMC units, and civil engineering labs
- Rugged, powder-coated mild-steel construction
- Cylindrical container included for final measurement
K-SLUMP TESTER AZA1104
AZA1104 K-Slump Tester is a fast, reliable, and non-destructive testing device designed to measure the workability and consistency of fresh concrete directly at construction sites or in laboratory environments. It provides instant slump approximation without the need for traditional slump cones, base plates, or tamping rods, making it an essential tool for modern concrete quality control.
This handheld instrument is widely used by civil engineers, site technicians, and quality inspectors who require quick, repeatable, and real-time results during concrete batching, transportation, and placement. Its simple design eliminates complicated setup, reducing testing time and operator fatigue.
Manufactured from high-grade stainless steel, the probe is corrosion-resistant and suitable for harsh site conditions. The etched scale markings provide direct readings in millimeters or inches, allowing accurate penetration depth measurement without additional instruments.
Unlike traditional slump testing methods, the AZA1104 enables non-destructive testing, meaning the concrete surface remains intact and usable after testing. This feature is especially useful when multiple checks are needed during large pours or continuous batching operation
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 CONCRETE MIXER (MOTORISED) AZA1116
Key Features
- Motorised operation for consistent and uniform mixing
- Ideal for laboratory-scale concrete preparation
- Durable drum crafted from mild steel or stainless steel
- Heavy-duty induction motor for long, reliable service life
- Stable, rigid frame designed for lab environments
- User-friendly controls with built-in safety features
- Reduced manual effort and improved batch repeatability
- Suitable for QC labs, R&D facilities, and educational institutions
PLASTIC BEAM MOULD AZA1128
The Azalab AZA1128 Polyurethane Beam Mould Series is engineered for casting concrete beam specimens used in flexural strength tests. Built from high-impact, shock-absorbing polyurethane, these moulds deliver exceptional durability, dimensional accuracy, and ease of handling. Their lightweight yet robust design makes them suitable for both laboratory and field applications.
Polyurethane offers superior resilience compared to traditional metal or rigid plastic alternatives, enabling these moulds to withstand vibration, repeated use, and environmental exposure. The smooth internal finish ensures clean, damage-free demoulding, while the mould structure maintains consistency across multiple cycles.
Each AZA1128 mould complies with IS 516, ASTM C78, and BS 1881, ensuring reliable and standardized test preparation.
PLASTIC CUBE MOULD AZA1126
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
STRAIGHT EDGE AZA1120
The AZA1120 Precision Steel Straight Edge is a laboratory-grade tool engineered for leveling, scraping, and finishing concrete and soil specimens during testing procedures. Used extensively in concrete cube/cylinder preparation, slump cone tests, and air meter testing, this straight edge ensures flat, uniform specimen surfaces essential for accurate and repeatable results.
Manufactured from high-grade hardened steel, the AZA1120 offers superior rigidity, dimensional stability, and long-term durability. The flat, 1-inch wide, 12-inch long bar profile allows smooth handling and effortless removal of excess material from molds. A corrosion-resistant polished or matte finish further enhances longevity and reliability in both lab and field conditions.