This document summarizes a presentation on using infrared thermography to detect defects in concrete. Infrared thermography is a non-destructive testing method that uses infrared cameras to detect differences in surface temperatures. The presentation discusses infrared cameras, image processing of thermal images, active vs. passive thermography methods, and color representations of temperature differences. An experiment was conducted using a concrete sample with simulated defects and a halogen lamp to heat the surface. The resulting infrared images clearly showed temperature differences corresponding to the defects. Infrared thermography provides a visual way to detect defects without damaging the material and can save time and costs compared to other inspection methods.