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Water Permeability Test of Concrete.

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Measuring Concrete’s Resistance to Water Ingress and Durability Under Pressure

The Water Permeability Test is one of the most fundamental and widely recognized durability tests for concrete, designed to measure the material’s resistance to water penetration under applied pressure. Since water is the main carrier for most aggressive agents — such as chlorides, sulfates, and carbon dioxide — this test provides a direct and reliable assessment of a concrete’s ability to resist long-term deterioration. At Global Lab, we perform the water permeability test using precise, standardized equipment that simulates water pressure conditions, ensuring accurate, reproducible, and comparable results.

Why WPTCMatters.

Chloride-Induced Corrosion

In marine regions or cold climates where de-icing salts are used, chloride ions enter the concrete through water movement. A low water permeability significantly reduces chloride transport, preventing corrosion of embedded steel reinforcement and ensuring long-term durability.

Sulfate Attack

Groundwater and soil often contain sulfates that can chemically react with cement paste, leading to expansion, cracking, and loss of strength. Concrete with low permeability minimizes sulfate ingress, maintaining its strength and integrity over time.

Freeze–Thaw Damage

In cold conditions, water trapped in concrete pores freezes and expands, generating internal stress that causes micro-cracks and spalling. Concrete with low permeability absorbs less water, making it far more resistant to freeze–thaw deterioration.

Carbonation

The entry of carbon dioxide (CO₂) reduces concrete’s alkalinity, which can depassivate steel reinforcement and initiate corrosion. Since CO₂ transport depends on moisture movement, water permeability testing is an effective method to gauge the concrete’s carbonation resistance.

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.

Applications — Where This Test Is Critical

The Water Permeability Test is essential for ensuring watertightness in dams, reservoirs, and swimming pools, and for preventing seepage in basements and tunnels.
It also verifies durability in bridge decks, foundations, and marine structures, while helping validate high-performance concrete mixes for harsh environmental conditions.

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WPTC Machine
Water permeability test of Concrete

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1000+

Concrete Samples Tested Monthly

NABL

Accredited for Concrete Durability & NDT Testing

48–72 Hrs

Guaranteed Report Turnaround

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.