Construction NDT Guide — In-Depth Articles

Practical long-form guides on construction & infrastructure NDT, written for structural inspectors, concrete QC engineers, infrastructure QA.

• GPR vs Rebar Locator: When Each One Earns the Hourly Rate

  By Lars Hagen, ACI · 2024-08-22

  GPR vs Rebar Locator: When Each One Earns the Hourly Rate

• Concrete Strength: Rebound Hammer vs Ultrasonic Pulse Velocity

  By Lars Hagen, ACI · 2025-01-30

  Concrete Strength: Rebound Hammer vs Ultrasonic Pulse Velocity

• Bridge Deck Deterioration Mapping: Methods That Actually Work

  By Salma Vega, PE Civil · 2025-07-08

  Bridge Deck Deterioration Mapping: Methods That Actually Work

• Post-Tensioned Cable Inspection: Impact-Echo and UT Strategies

  By Lars Hagen, ACI · 2025-11-12

  Post-Tensioned Cable Inspection: Impact-Echo and UT Strategies

• Steel Structure Weld Inspection Under AWS D1.5 (Bridge Welding Code)

  By Salma Vega, PE Civil · 2026-04-02

  Steel Structure Weld Inspection Under AWS D1.5 (Bridge Welding Code)