Prompt Gamma-Ray Analysis of Steel Slag in Concrete

作者：Naqvi Akhtar Abbas^*; Garwan Muhammad Ahmad; Mohiuddin Mohammad Masalehuddin; Nagadi Mahmoud Mohammad; Al Amoudi Omar Saeed Baghabra; Khateeb ur Rehman; Raashid Mohammad

来源：Journal of Nuclear Science and Technology, 2009, 46(7): 737-743.

DOI：10.3327/jnst.46.737

• PGNAA technique
• reinforcement corrosion
• blast furnace slag (BFS)
• 2.8 MeV neutrons
• Monte Carlo simulations
• Ca/Si gamma-ray yield ratio
• Portland cement concrete
• pozzolan

Blast furnace slag (BFS) is added to Portland cement concrete to increase its durability, particularly its corrosion resistance. Monitoring the concentration of BFS in concrete for quality control purposes is desired. In this study, the concentration of BFS in concrete was measured by utilizing all accelerator-based prompt gamma-ray neutron activation analysis (PGNAA) setup. The optimum size of the BFS cement concrete specimen that produces the maximum intensity of gamma rays at the detector location was calculated through Monte Carlo simulations. The simulation results were experimentally validated through the gamma-ray yield measurement from BFS cement concrete specimens having different radii. The concentration of BFS in the cement concrete specimens was assessed through calcium and silicon gamma-ray yield measurement from cement concrete specimens containing 5 to 80 wt% BFS. The yield of calcium gamma rays decreases with increasing BFS concentration in concrete while the yield of silicon gamma rays increases with increasing BFS concentration in concrete. The calcium-to-silicon gamma-ray yield ratio has an inverse relation with BFS concentration in concrete.

• 出版日期2009-7
• 单位中国石油大学（北京）