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Crack Width Test.

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Quantifying Surface Crack Widths to Prioritise Repairs and Ensure Serviceability

Crack Width Test accurately measures the width of surface cracks in concrete elements to assess serviceability, durability risk and repair urgency. Unlike visual checks, this test provides quantitative crack width data that engineers use to determine repair strategies, evaluate waterproofing needs, and ensure compliance with design and maintenance standards. At Global Lab, we perform crack width measurement with precision optical devices, digital crack gauges, or microscopic imaging depending on project requirements. Results are recorded with traceable accuracy and provided with expert interpretation.

Why Crack Width Test Matters.

Determines Serviceability and User Safety

Crack width directly affects deflection, water ingress, and dusting. Measuring width helps decide whether a crack is cosmetic or impacts functionality and safety.

Predicts Durability and Corrosion Risk

Wider cracks allow greater moisture and chloride ingress, accelerating rebar corrosion. Monitoring crack widths helps forecast deterioration and plan protective measures.

Prioritises Maintenance and Repairs

Quantitative widths let owners prioritise interventions economically — from sealing hairline cracks to structural repairs for wide, active fissures.

Verifies Repair Effectiveness & Monitoring

Post-repair measurements and periodic monitoring confirm whether injection, stitching, or coating methods successfully control crack propagation.

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

  • Bridge decks, expansion joints and highway pavements
  • Façades, retaining walls, columns and slabs in buildings
  • Tunnels, water tanks, and containment structures where leakage is critical
  • Precast elements and factory QA for production control
  • Forensic investigations following fire, impact, or seismic events
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Crack Width Test
Crack Width Testing

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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.