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Flexural Strength Test of Concrete.

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Evaluation of Concrete Performance Under Bending Loads

Flexural Strength Test of Concrete, also known as the Modulus of Rupture Test, is used to determine the bending strength of concrete. Unlike compressive strength tests, flexural testing evaluates how concrete behaves when subjected to tensile stresses developed due to bending, which is critical for elements such as slabs, pavements, beams, and rigid floors. In this test, a concrete beam specimen is loaded until failure under controlled conditions. The resulting flexural strength value provides a realistic measure of concrete’s resistance to cracking and bending stresses under service loads.

Why FSTMatters.

Direct Assessment of Bending and Crack Resistance

Flexural strength represents concrete’s ability to resist tensile stresses generated by bending. This makes it a key parameter for understanding cracking behavior in slabs, pavements, and structural elements where bending governs performance rather than pure compression.

Essential for Pavement, Runways, Flooring and Slab Design

For rigid pavements, floors, and runways, design is primarily based on flexural strength rather than compressive strength. The test ensures that concrete can withstand repeated wheel loads and bending stresses without premature cracking or failure.

Indicator of Serviceability Performance

Flexural strength is closely linked to deflection control and crack width development. Reliable test results help engineers ensure that concrete elements remain serviceable, minimizing visible cracking, surface distress, and long-term deterioration.

Quality Control and Mix Performance Evaluation

The flexural strength test is an effective tool for comparing concrete mixes, aggregates, admixtures, and curing methods. It helps verify consistency in production and confirms that the concrete mix performs as intended under realistic loading conditions.

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.

Applications

Design and quality control of rigid pavements, highways, and airport runways.
Performance evaluation of industrial floors and concrete slabs.
Assessment of precast concrete beams and panels.
Comparative studies of concrete mixes, fibers, and admixtures.
Verification of concrete performance for infrastructure and transportation projects.

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Flexural Strength Test

Flexural Strength 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.