Assessment of radiation dose due to natural radionuclides in various cement samples
by Rohit Mehra; Pankaj Bala; Komal Badhan; R.G. Sonkawade
International Journal of Low Radiation (IJLR), Vol. 8, No. 2, 2011

Abstract: 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 high-resolution 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 (JayPee), 29.49 Bq kg^?1 (JK Laxmi) to 42.17 Bq kg^?1 (JayPee) and 228.25 Bq kg^?1 (JK Cement) to 304.98 Bq kg^?1 (Binani) for ²²⁶Ra, ²³²Th and ⁴⁰K, respectively. The concentration of radium, thorium and potassium in the selected PPC cement samples varies from 22.50 Bq kg^?1 (JK Laxmi) to 48.83 Bq kg^?1 (Binani), 30.74 Bq kg^?1 (JK Laxmi) to 70.48 Bq kg^?1 (Binani) and 267.94 Bq kg^?1 (Binani) to 328.88 Bq kg^?1 (JayPee), respectively. Radium equivalent, annual effective dose, absorbed dose and hazard indices were also calculated for the measured samples.

Online publication date: Sat, 07-Feb-2015

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