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Updated: Apr 6, 2026

Dynamic Electrochemical Measurement of Chloride Ions
Published on: February 5, 2016
Chlorine signal attenuation in concrete
A A Naqvi1, M Maslehuddin2, Khateeb Ur-Rehman1
1Department of Physics, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
Abstract:
The intensity of prompt gamma-ray was measured at various depths from chlorine-contaminated silica fume (SF) concrete slab concrete specimens using portable neutron generator-based prompt gamma-ray setup. The intensity of 6.11MeV chloride gamma-rays was measured from the chloride contaminated slab at distance of 15.25, 20.25, 25.25, 30.25 and 35.25cm from neutron target in a SF cement concrete slab specimens. Due to attenuation of thermal neutron flux and emitted gamma-ray intensity in SF cement concrete at various depths, the measured intensity of chlorine gamma-rays decreases non-linearly with increasing depth in concrete. A good agreement was noted between the experimental results and the results of Monte Carlo simulation. This study has provided useful experimental data for evaluating the chloride contamination in the SF concrete utilizing gamma-ray attenuation method.
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