Hydrogen Embrittlement in Welded Rebar
The infrastructure surrounding a reasonably large grocery store was being evaluated for final acceptance. A truck driver with a low bed trailer was attempting to leave the parking lot at a very slow and cautious speed, however while backing he tapped a light fixture supported by a concrete foundation. Even though the impact was only a slight bump, of the light fixture broke as if it were a 20″ diameter piece of brittle glass. This was witnessed by the group working on acce