Method for testing sulfate radical erosion depth of cement-based material

A cement-based material, erosion depth technology, applied in the direction of suspension and porous material analysis, measurement devices, permeability/surface area analysis, etc., can solve the mold and cement specimens are easily damaged, can not be repeatedly detected, inconvenient to operate, etc. problems, achieve high sensitivity, save test manpower and time, and test time is short

Active Publication Date: 2014-04-02
SHENZHEN UNIV
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  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for testing the depth of sulfate radical erosion of cement-based materials, aiming to solve the problems of easy damage of molds and cement specimens, non-repeatable detection, large errors, and inconvenient operation in the existing testing methods.

Method used

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  • Method for testing sulfate radical erosion depth of cement-based material
  • Method for testing sulfate radical erosion depth of cement-based material
  • Method for testing sulfate radical erosion depth of cement-based material

Examples

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Embodiment 1

[0035] A method for testing the depth of sulfate radical erosion of cement-based materials, comprising the following specific steps:

[0036](1) Inject the composite Portland cement into the mold disclosed by the patent No. ZL201120473976.2 for cement specimen curing, remove the electrode plates at both ends of the mold and place the mold in sulfate solutions with different sulfate concentrations for infiltration .

[0037] In step (1), the 525 composite Portland cement produced by Shenzhen Starfish Onoda Cement Co., Ltd. is injected into the mold disclosed by the patent No. ZL201120473976.2 (see the use disclosed in the third page of the embodiment of the specification part of the patent document for details) The mold used for the online test of electrochemical impedance spectroscopy in the cement hydration process, the model specification of the mold is specifically described in the paragraph 0030 of the embodiment: "The material of the bottom plate 1, the side plate 2 and t...

Embodiment 2

[0063] A method for testing the depth of sulfate radical erosion of cement-based materials, comprising the following specific steps:

[0064] (1) Inject the composite Portland cement into the mold disclosed by the patent number ZL 201120473976.2 for cement specimen curing, remove the electrode plates at both ends of the mold and place the mold in sulfate solutions with different sulfate concentrations for infiltration.

[0065] In step (1), the 525 composite Portland cement produced by Shenzhen Starfish Onoda Cement Co., Ltd. is injected into the mold disclosed by the patent No. ZL 201120473976.2 (see for details the method disclosed in the third page embodiment of the specification part of the patent document for The mold for online testing of electrochemical impedance spectroscopy in the cement hydration process. The model specifications of the mold are specifically described in paragraph 0030 of the embodiment: "The materials of the bottom plate 1, the side plate 2 and the c...

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Abstract

The invention provides a method for testing the sulfate radical erosion depth of a cement-based material. The method is used for carrying out the full-course conservation and the sulfate radical penetration test on the cement material by a mould for the on-line test of electrochemical impedance spectroscopy during hydration of cement disclosed by the patent with the number of 'ZL201120473976.2'. The method comprises the following steps: enabling the cement material to be eroded by sulfate radical by disassembling 40mm*40mm plate electrodes from two ends of the mould when the sulfate radical penetrates, and assembling the plate electrodes onto the two ends of the mould when the electrochemical impendence spectroscopy test needs to be carried out, wherein the sulfate radical erosion depth of the cement material can be reflected and calculated through the regular change of electrochemistry parameters. The method has the advantages that the mould and cement test pieces are less prone to damage, and the test can be repeatedly carried out, has few errors, is convenient to operate, etc.

Description

technical field [0001] The invention belongs to the field of cement material penetration testing methods, and in particular relates to a testing method for sulfate radical erosion depth of cement-based materials. Background technique [0002] The disadvantages of the existing traditional barium nitrate reagent method for testing the penetration depth of sulfate radicals are: [0003] (1) The cement specimen in the mold needs to be disassembled, which can easily lead to damage to the mold, and it is also very inconvenient in the actual operation process, and the cement specimen cannot be repeatedly eroded and tested. [0004] (2) The test piece needs to be destroyed, and the component is often repaired after the test. Sometimes, the damage to the component can not be repaired by this method. [0005] (3) It cannot be tested repeatedly. This method will cause damage to the cement specimen. Even if the component is repaired, its later penetration process will be affected, so t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 董必钦邢锋袁伟鹏尹远陈立邱启文房国豪徐伟伟张健超王琰帅
Owner SHENZHEN UNIV
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