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Rebound Hammer Test.

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A Quick, Non-Destructive Assessment of Concrete Quality

Rebound Hammer Test, commonly referred to as the Schmidt Hammer Test, stands as a prominent non-destructive testing (NDT) methodology for assessing the surface hardness and estimating the compressive strength of concrete. It offers a rapid, straightforward, and economical approach to evaluating concrete in situ without causing any damage, making it an ideal choice for routine quality control and structural evaluations. At Global Lab, the rebound hammer test is conducted in accordance with the established standards, including IS 516 (Part 5/Sec 4) and IS 13311 Part-2. This adherence ensures the reliable diagnosis of both in-place and laboratory specimens, fulfilling the requirements of construction, maintenance, and quality assurance purposes. Notably, the reliability of rebound hammer results is contingent upon the outcomes of ultrasonic pulse velocity measurements.

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.

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.

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-accredited laboratory with traceable calibration and stringent Quality System procedures.

Compliance with Standards: Tests conducted in accordance with relevant IS/ASTM/RILEM/EN standards.

Experienced Personnel: Technologists and experts who interpret results and recommend mitigation strategies.

Rapid and Reliable Reporting: Valid reports that comply with relevant standards.

Testing Capabilities: Lab and on-site testing, along with post-test consulting services.

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.