I know that Elena Tajuelo-Rodriguez at Oak Ridge National Laboratory is looking at the effects of radiation on aggregates and some concretes. There are also a couple of papers by Neda Mobasher.
As I understand you mean studies on natural radioactivity. Due to the increased concentration of natural radionuclides in industrial byproducts such as fly ash and silica fume, concrete produced by these SCMs can have high 226Ra, 232Th and 40K activities, emitting photons (gamma rays) at various energy levels. In fact, ordinary Portland cement also has a significant potential for natural radioactivity. Natural aggregate sources contain negligible amounts of natural radionuclides. Accordingly, you can focus on the papers about the sources of natural radionuclides (226Ra, 232Th and 40K) in concrete ingredients. Please see the paper Article Natural radioactivity of barite concrete shields containing ...