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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 |
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