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Fast load testing device and method for chloride ion migration coefficient of concrete

A transfer coefficient and testing device technology, which is applied in measuring devices, suspension and porous material analysis, scientific instruments, etc., can solve the problems of inability to load test pieces, achieve convenient operation, avoid compressive stress reduction, and simple device structure

Inactive Publication Date: 2012-07-11
HOHAI UNIV
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Problems solved by technology

[0003] The present invention aims at the problem that the testing device for the rapid chloride ion migration coefficient of conventional concrete cannot load the specimen, and provides a loading and testing device for testing the rapid chloride ion migration coefficient of concrete under the condition of continuous pressure load

Method used

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  • Fast load testing device and method for chloride ion migration coefficient of concrete
  • Fast load testing device and method for chloride ion migration coefficient of concrete
  • Fast load testing device and method for chloride ion migration coefficient of concrete

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Embodiment Construction

[0042] The accompanying drawings disclose structural schematic diagrams of the preferred embodiments involved in the present invention without limitation; the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] like Figures 1 to 5 As shown, the concrete rapid chloride ion migration coefficient loading test device of the present invention includes a compression loading device and an electrically accelerated chloride ion rapid migration device, wherein the compression loading device consists of a steel base plate 1, a screw 2, a spring positioning cylinder 3, an elastic connector 4. Lower pressure steel plate 5, lower backing plate 6, upper backing plate 7, ball seat 8, load cell 91, force measuring instrument 92, lower support nut 10, upper pressure steel plate 11, upper locking nut 12 , a hydraulic jack 13, a top plate supporting bolt cap 14, a top plate 15 and a top plate fastening bolt cap 16; ...

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Abstract

The invention discloses a fast load testing device and method for a chloride ion migration coefficient of concrete. An elastic connecting piece in a state of compression is adopted for exerting a sustained load on a concrete sample and the concrete sample loaded with sustained stress is subjected to an electric accelerating chloride ion migration test to calculate the chloride ion migration coefficient of the concrete sample in the state. According to the invention, the fast load testing device and method for the chloride ion migration coefficient of the concrete aim at the problems that the conventional testing device for the chloride ion migration of the concrete can not exert a load on a tested sample and consequently can neither imitate the actual loaded state of in-service concrete nor determine the chloride ion migration coefficient of the concrete under sustained load; sustained and stable pressure is exerted on the concrete sample in longitudinal direction by the resilience of the elastic connecting piece; and the reduction of pressure stress caused by the creep of the concrete sample when a tensioning screw is used for exerting load can be avoided, so that the influence of the sustained load on the permeability of the chloride ions of the concrete can be researched.

Description

technical field [0001] The invention relates to a test device and method for measuring the chloride ion migration coefficient of concrete, in particular to a rapid test device and method for the chloride ion migration coefficient of concrete under continuous pressure load conditions. Background technique [0002] Corrosion of steel bars is one of the main failure forms of various reinforced concrete structures. One of the main reasons for the corrosion of steel bars in reinforced concrete structures is the intrusion of chloride ions, so the chloride ion permeability of concrete is the key to the durability of reinforced concrete in environments with high chloride salt content (such as marine engineering, underground engineering and some hydraulic structures). important sign. Over the years, people have studied the determination method of chloride ion permeability of concrete, and formulated relevant test procedures. At present, there are mainly electric flux method and fas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 方永浩袁雪莲余韬龚泳帆朱晨辉顾冲时吕正龙
Owner HOHAI UNIV
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