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Patents

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Patent diagram labeled "FIG. 1" illustrating a non-destructive concrete quality testing system with a moving platform carrying concrete samples past a collimator and dual gamma detectors shielded in lead.

Non-Destructive Concrete Quality Testing System

NIST Inventors
Huaiyu Heather Chen-Mayer
This invention uses prompt gamma neutron activation analysis (PGAA) to analyze materials, especially concrete, without damaging them. It fires neutrons at the sample, which then emits gamma rays. By measuring those rays, the material's makeup can be identified, including cement, sand, aggregates
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