Photon attenuation coefficients of concrete including marble aggregates

The linear attenuation coefficients (mu, cm(-1)) for concrete having marble aggregates in different concentrations have been investigated. The marble concentrations investigated in the work were 0%, 5%, 10%, 15%, 20% and 25% in concrete. The measurements were performed using a gamma spectrometer that contains a NaI(Tl) detector and Multi-Channel-Analyser (MCA) connected to a PC. Three different gamma rays energies have been used at 662, 1173 and 1332 key from Cs-137 and Co-60 sources respectively. The measured results were compared with the calculation obtained using computer code of XCOM for 1 keV-1 GeV gamma energies. (C) 2012 Elsevier Ltd. All rights reserved.