Development of Non-destructive In-situ Measuring Method on Profile of Chloride Concentration in Concrete by Prompt Gamma-ray Analysis

本研究采用了一种分析方法，可以同时从照射到样品中的中子放出的伽马射线中识别出多个元素。本研究提出了一种通过逐渐改变中子束照射混凝土表面的角度来预测混凝土结构钢筋锈蚀劣化进程所需的非破坏性测量混凝土中氯离子浓度分布的方法。该方法适用于氯离子浓度的任意分布，是合适的。

This study uses analysis method that can identify a multi element at the same time from gamma rays discharged by irradiating the neutron to the sample. This study proposes the non-destructive method of measuring the profile of the chloride ion concentration in concrete necessary for predicting the progress of deterioration by the reinforcement corrosion of a concrete structure by gradually changing the irradiating angle of neutron beam to the concrete surface. The proposal method can apply to arbitrary distribution of the chloride ion concentration and is appropriate.