The utility model discloses a concrete
corrosion detection device which comprises a detachable telescopic vehicle-mounted support mechanism and a
salinity detection
assembly arranged on the vehicle-mounted support mechanism, the
salinity detection
assembly comprises a device shell, a
neutron source moderation shielding structure integrated on the inner side of the device shell and a plurality of BGO detectors with multi-angle detection, the plurality of BGO detectors are symmetrically distributed on the outer side of the
neutron source moderation shielding structure and are arranged at intervals with the
neutron source moderation shielding structure. According to the detection device, the detection
system is optimized, the BGO detectors are symmetrically distributed, multi-angle detection is achieved, and the detection sensitivity is improved. The
neutron source moderation shielding structure is integrated, the
neutron source assembly is arranged on the inner side, and the
neutron source moderation unit and the reflective shielding absorption unit are arranged on the outer side, so that the direction and energy of emitted neutrons are controlled, interference of redundant gamma rays is reduced, the
signal-to-
noise ratio of the BGO
detector is increased, and the accuracy of non-destructive detection of a to-be-detected object is improved.