Development of the neutron salt-meter RANS-μ for non-destructive inspection of concrete structure at on-site use

Issue title: UCANS IX Online Conference

Guest editors: David Baxter, Thomas Gutberlet, Koichi Kino, Yoshiaki Kiyanagi, Hiroaki Kumada, Yoshi Otake, Masato Takamura and Xuewu Wang

Article type: Research Article

Authors: Wakabayashi, Yasuo^{a; *} | Yan, Mingfei^a | Takamura, Masato^a | Ooishi, Ryuutarou^b | Watase, Hiroshi^b | Ikeda, Yujiro^a | Otake, Yoshie^a

Affiliations: [a] RIKEN Center for Advanced Photonics, RIKEN, Japan | [b] Oriental Shiraishi Corporation, Japan

Correspondence: [*] Corresponding author. E-mail: [email protected].

Abstract: We have started the development of a transportable neutron salt-meter, we call it RANS-μ, combining a 252Cf neutron source and a prompt gamma neutron activation analysis. Trials of chloride detection measurement with RANS-μ were performed outdoor using removed bridges damaged by chloride attack at an outdoor yard in Public Works Research Institute (PWRI) and a test bridge in Fukushima Robot Test Field. For the measurement at PWRI, the results obtained by RANS-μ were compared with those of the automatic potentiometric titration by drilled powder, and then consistent results were obtained.

Keywords: ²⁵²Cf neutron source, non-destructive chloride measurement, on-site, prompt gamma-ray, concrete structure

DOI: 10.3233/JNR-220031

Journal: Journal of Neutron Research, vol. 24, no. 3-4, pp. 411-419, 2022