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A Concrete Void Detection System

A detection system, concrete technology, applied in measuring devices, instruments, material analysis using neutrons, etc., can solve the problems of cumbersome and inconvenient operation procedures and low efficiency

Active Publication Date: 2019-10-29
SHENZHEN SINO NUCLEAR CO CREATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a concrete void detection system to solve the problems in the prior art that the operating procedures are very cumbersome, inconvenient and inefficient when using the neutron scattering method to detect voids and cavity depths

Method used

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  • A Concrete Void Detection System
  • A Concrete Void Detection System
  • A Concrete Void Detection System

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Embodiment Construction

[0027] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0028] In order to illustrate the technical solutions of the present invention, the following specific embodiments are used for description.

[0029] Existing technologies using neutrons to detect voids in concrete all use a neutron source to emit fast neutrons to steel plates and concrete, and then use a single thermal neutron detector to detect thermal neutrons to deter...

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Abstract

The present application is applicable to the technical field of neutron detection, and provides a concrete void detection system. The system comprises a measuring instrument and a main device. The measuring instrument comprises a neutron source. The neutron source is provided on a steel plate covering a concrete surface, and is used to emit fast neutrons towards the concrete. The measuring instrument is used to measure thermal neutron count rates at two positions on the steel plate, distances from the neutron source to the two positions being different, and send to the main device a calculated count rate ratio of the thermal neutron count rates at the two positions. The main device is used to acquire the thickness of the steel plate, search for a correspondence between the received count rate ratio and a concrete void depth according to the thickness, and determine, according to the correspondence, the concrete void depth corresponding to the count rate ratio. The embodiments of the present application eliminate cumbersome operations, and greatly improve the efficiency of concrete void depth measurement.

Description

technical field [0001] The invention belongs to the technical field of neutron detection, and in particular relates to a concrete void detection system. Background technique [0002] In modern large-scale hydropower projects, traffic engineering and other buildings, there are often concrete buildings that need to be lined with steel plates or composite stress-bearing structures, generally pressure tunnels or pipe holes, large traffic immersed pipe structures, high-speed rail track slabs, etc. For pressurized tunnels, large-scale traffic immersed tube structures, etc., due to some unavoidable process problems and on-site working conditions, the pouring quality is affected and the concrete is difficult to fill and compact, especially in the joint surface of steel plate and concrete. void defect. These voids and void defects are the huge hidden dangers that directly cause the deformation, instability and damage of the steel plate lining when the project is put into operation, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B15/00
CPCG01B15/00G01B15/02G01N23/005G01N33/383
Inventor 朱洪叶卫列王东
Owner SHENZHEN SINO NUCLEAR CO CREATION TECH CO LTD
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