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Rebound Hammer Test.

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A Quick, Non-Destructive Assessment of Concrete Quality

The Rebound Hammer Test, also known as the Schmidt Hammer Test, is one of the most widely used non-destructive testing (NDT) methods for evaluating the surface hardness and estimated compressive strength of concrete. It provides a fast, simple, and cost-effective way to assess in-place concrete without causing any damage — making it ideal for routine quality checks and structural evaluations.

Why Rebound Hammer TestMatters.

Quick & Non-Destructive

Provides an instant indication of concrete quality and hardness without drilling or damaging the structure — ideal for rapid on-site evaluation.A low water permeability significantly reduces chloride transport, preventing corrosion of embedded steel reinforcement and ensuring long-term durability.

Assesses Uniformity & Variability

Helps detect variations in concrete strength across different locations, enabling engineers to target weaker zones for further testing or strengthening.Concrete with low permeability minimizes sulfate ingress, maintaining its strength and integrity over time.

Estimates Compressive Strength

Although indirect, the rebound number offers a practical estimate of compressive strength when correlated with calibration data — saving time during field investigations.Concrete with low permeability absorbs less water, making it far more resistant to freeze–thaw deterioration.

Ideal for Existing Structures & Quality Control

Widely used for quality assurance, maintenance inspections, and structural health assessments, especially when destructive testing is not feasible. it serves as a quick and reliable indicator of in-situ concrete quality in any structure.

NDT TESTING

GL Advantages.

  • Accredited facility: NABL-grade laboratory with traceable calibration and strict QA systems.

  • Standards compliance: Tests performed to ASTM C1202 (Rapid Chloride Permeability Test) and applicable IS/EN methods.

  • Experienced analysts: Concrete technologists who interpret results and recommend mitigation.

  • Fast, reliable reporting: Clear reports with test data, graphs, comparative benchmarks, and practical recommendations.

  • Field + Lab capability: On-site sampling, specimen curing, and post-test consulting.

Global Lab Advantage.

Accredited facility.
Standards compliance.
Experienced analysts.
Fast, reliable reporting.
Field + Lab capability.

The Rebound Hammer Test is extensively applied in both new construction and structural assessment projects where quick, non-destructive evaluation is required.
It’s particularly useful for verifying in-situ concrete quality, comparing strength uniformity, and identifying areas that may require further investigation.

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Rebound Hammer Test
Schmidt Hammer
Schmidt Hammer test

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On-Site Testing Across India

Global Lab provides comprehensive testing for construction and engineering materials, including concrete, cement, steel, aggregates, bitumen, soil, tiles, paver blocks, and other civil and infrastructure materials. We also handle customized tests as per client or project specifications.

Yes. Our team is equipped with mobile testing facilities and field instruments for on-site sampling, inspection, and testing — ensuring quick and reliable results without disrupting your project timelines.