CONCRETE TEST HAMMER (SCHMIDT HAMMER) N TYPE AZA1148
The AZA1148 Concrete Test Hammer (N-Type) is a precision-engineered non-destructive testing device designed to estimate the compressive strength of hardened concrete. Operating on the rebound principle, this instrument delivers fast, reliable field measurements without damaging the structure, making it indispensable for quality control, inspection, and structural assessment.With an impact energy of 2.207 Nm, the AZA1148 is suitable for general-purpose testing of standard-density concrete elements with expected compressive strength values ranging between 10 MPa and 70 MPa. It is widely used in construction sites, material testing laboratories, bridges, tunnels, precast yards, and industrial structures.
How It Works
The hammer uses a spring-loaded mass that impacts the concrete surface. The rebound distance of the mass (displayed as an R-value) correlates to the concrete’s surface hardness and indirectly indicates compressive strength. Results can be interpreted using standard conversion charts or custom calibration curves based on local materials.
Description
Key Features & Advantages
Non-Destructive Testing Method
Quickly estimates in-place concrete strength without core extraction or drilling.
Standard N-Type Configuration
Impact energy of 2.207 Nm, ideal for routine structural testing.
Wide Strength Measurement Range
Suitable for concrete between 10–70 MPa, covering most structural applications.
Durable Construction
Lightweight aluminum alloy body with a hardened steel plunger tip ensures long service life.
High Accuracy & Repeatability
Internal components are precision-machined for consistent rebound performance.
Standards Compliant
Factory calibrated and compliant with ASTM C805 and EN 12504-2, ensuring global acceptance.
Field Ready
Supplied with grinding stone for surface preparation, conversion chart, and protective carrying case.
Low Maintenance
Easy cleaning and periodic calibration with a reference anvil maintain long-term accuracy.
Technical Specifications
| Feature | Specification |
|---|---|
| Type | Schmidt Rebound Hammer (N-Type) |
| Impact Energy | 2.207 Nm |
| Strength Range | 10–70 MPa |
| Standards | ASTM C805, EN 12504-2 |
| Body Material | Aluminum alloy |
| Plunger Tip Material | Hardened alloy steel |
| Display | Rebound value (R-Scale) |
| Dimensions | ~280 mm (L) × 55 mm (D) |
| Weight | ~1.4 kg |
| Accessories | Grinding stone, conversion chart, carrying case |
Applications
-
Quality control of concrete works
-
Structural health monitoring
-
Inspection of beams, columns, slabs, pavements
-
Precast component evaluation
-
Comparative strength checks between concrete batches
-
Assessment where destructive testing is impractical
Frequently Asked Questions (FAQ)
Q1: What does the AZA1148 measure?
It measures rebound hardness (R-value), which is correlated to the compressive strength of hardened concrete.
Q2: What type of concrete is suitable for N-Type hammers?
Standard-density concrete between 10–70 MPa.
(N-Type is not recommended for lightweight concrete.)
Q3: How often should calibration be done?
Periodic calibration using a reference anvil is recommended to ensure accuracy.
Q4: Is it suitable for both lab and field use?
Yes. It is designed for rugged site conditions as well as controlled laboratory environments.
Q5: What accessories are included?
A grinding stone, calibration chart, and sturdy carrying case.
Additional information
| Type |
Schmidt Rebound Hammer (N-Type) |
|---|---|
| Impact Energy |
2.207 Nm |
| Strength Range |
10–70 MPa |
| Standard Compliance |
ASTM C805, EN 12504-2 |
You may also like…
FLOW TABLE AZA0791
FLOW TABLE (MOTORISED) AZA0791A
FLOW TABLE (MOTORISED) AZA0791C
FLOW TABLE AZA0791B
GILLMORE NEEDLE APPARATUS AZA0790
LE CHATELIER MOULD AZA0792
Related products
CHASE AIR INDICATOR AZA1105
AZA1105 Chase Air Indicator is a compact, lightweight, and highly practical field instrument designed to measure the air content in freshly mixed concrete. It is widely used in construction sites where rapid quality decisions are required and laboratory testing equipment is not readily available.
This device serves as a reliable field alternative to standard air content methods such as ASTM C231 (Pressure Method) and ASTM C173 (Volumetric Method). While it is not intended to replace laboratory-grade instruments, it provides fast, useful guidance that helps engineers and site supervisors maintain proper concrete mix quality.
Air entrainment plays a critical role in concrete durability, especially in regions exposed to freeze–thaw cycles, and contributes significantly to workability and pumpability of concrete. AZA1105 helps ensure that air content remains within the recommended range (typically 4%–7%), reducing the risk of weak or brittle concrete.
The working principle is based on fluid displacement and vacuum pressure balance. A representative mortar sample is collected and placed inside the testing chamber, where a controlled vacuum is applied. The internal pressure difference is translated directly to a calibrated dial gauge showing the approximate air content percentage.
With no electrical components, moving mechanical assemblies, or complex maintenance requirements, the AZA1105 is extremely reliable and built for tough field conditions. Its rugged body and easy-to-read dial make it suitable for continuous daily use in real-world jobsite environments.
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.
MORTAR PENETROMETER AZA1115
Key Features
- Complies with ASTM C403 Standard
- Used to determine mortar hardening rate
- Spring-loaded stem graduated 0–70 kg (1 kg divisions)
- Includes six interchangeable stainless steel needles
- Measures resistance at 25 mm penetration
- Shanks marked every 5 mm for depth guidance
- Supplied in a polished wooden carrying case
- Suitable for both laboratory and on-site QC
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
SLUMP CONE, PLASTIC AZA1103
AZA1103 Slump Cone (Plastic) is a durable and lightweight testing tool designed for accurate measurement of concrete workability and consistency. It is widely used in construction sites, civil engineering laboratories, and quality control departments for fast and reliable slump testing of fresh concrete mixes.
Unlike traditional metal cones, this model is manufactured from high-quality rigid plastic, making it corrosion-resistant, dent-proof, and highly suitable for repeated field and laboratory use. Its lightweight construction makes it easy to transport and ideal for site engineers and mobile testing teams.
The apparatus is manufactured to standard dimensions and fully complies with IS 1199 and ASTM C143, ensuring accurate and repeatable test results. The smooth internal surface minimizes friction, allowing easy release of concrete and improving measurement accuracy.
This slump cone helps engineers quickly determine if a concrete mix has the correct consistency for placement, compaction, and finishing. It is especially useful for quality checks before concrete pouring to avoid honeycombing, segregation, or improper flow.
AZA1103 is reusable, easy to clean, and requires minimal maintenance, making it a long-lasting and cost-effective solution for routine concrete testing.
TAMPING ROD AZA1119
The AZA1119 Tamping Rod is a precision-engineered tool designed for proper compaction of concrete during laboratory and field testing. Essential for slump tests, cube/cylinder preparation, and unit weight determination, this rod ensures accurate removal of air voids, resulting in reliable and repeatable test outcomes.
Manufactured from hardened high-grade steel or stainless steel, the rod maintains dimensional accuracy, bending resistance, and a corrosion-proof finish. Each unit is polished to a smooth surface and features hemispherical ends to prevent mold damage and ensure uniform rodding action. The AZA1119 conforms to ASTM C143, ASTM C192, ASTM C138, IS 1199, and other major testing standards.
It is available in 16 mm and 25 mm diameters, with standard lengths of 600 mm (optional 450 mm). The rods are suitable for use in construction materials labs, QC departments, R&D centers, and field sampling units.
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
