Samples of Ordinary Portland Cement (OPC) and Portland Pozzolana Cement (PPC) from five companies were analysed for the measurement of 226Ra, 232Th and 40K using a HPGe detector based on highresolution gamma spectrometry system. The measured activity in the selected OPC cement samples varies from 19.24 Bq kg?1 (JK Laxmi) to 40.73 Bq kg?1 ...
Inderscience Publishers
