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Test method for bonding performance of coating materials under pressure and water seepage

A technology of coating materials and test methods, which can be used in analytical materials, instruments, measuring devices, etc., and can solve problems such as inability to accurately reflect bonding performance.

Active Publication Date: 2020-12-08
CNBM ZHONGYAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of concrete, rock or stone material coating material bonding property test method under the pressure water seepage condition, to alleviate the existing in the prior art about repairing the method for measuring the adhesion of the material all in dry prefabricated concrete, rock Or on the stone interface, it cannot accurately reflect the technical problems of the bonding performance in the real environment of concrete, rock or stone repair in actual engineering

Method used

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  • Test method for bonding performance of coating materials under pressure and water seepage

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Experimental program
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Effect test

Embodiment 1

[0048] The present embodiment provides a kind of test method for testing the bonding performance of the concrete coating material 9 under the pressure water seepage condition, comprising the following steps:

[0049] S1: Preparing concrete specimen 8 according to the mix ratio and standard curing for 28d;

[0050] S2: Apply sealant to the side of the concrete test piece 8, and fix it in the corresponding mold groove of the test bench, so that the concrete specimen 8 is flush with the bottom of the mold groove;

[0051] S3: After the sealant is completely cured, install the pressure tank 2 and inject water to pressurize it, and stabilize it for 0.5-2 hours after reaching the set water seepage pressure;

[0052] S4: coating the coating material 9 on the surface of the concrete specimen 8;

[0053] S5: After the coating material 9 is cured, apply an adhesive on the surface of the coating material 9 and place a steel jig for stretching, and install a tension detection device;

[0...

Embodiment 2

[0064] This embodiment provides a method for testing the critical value of the concrete coating material 9 against pressure and water seepage, comprising the following steps:

[0065] B1: Preparing concrete specimen 8 according to the mix ratio and standard curing for 28d;

[0066] B2: Apply sealant to the side of the concrete specimen 8, and fix it in the corresponding mold groove of the test bench, so that the concrete specimen 8 is flush with the bottom of the mold groove;

[0067] B3: After the sealant is completely cured, install the pressure tank 2 and inject water to pressurize it. The seepage pressure starts from 0.1MPa, and stabilizes for 0.5-2h after reaching the set seepage pressure, and then gradually increases the seepage pressure by 0.1MPa.

[0068] B4: Coating the coating material 9 on the surface of the concrete specimen 8, observing whether the coating material 9 can adhere to the surface of the concrete specimen 8, when the coating material 9 cannot be adhere...

Embodiment 3

[0071] This embodiment provides a test equipment for testing the bonding performance of the coating material 9 under the condition of pressure and water seepage, including an experiment platform 4, a hydraulic loading device and a lifting instrument 6;

[0072] The experimental platform 4 has a test mold groove for accommodating the substrate test piece 8;

[0073] The hydraulic loading device is arranged at the bottom of the base material test piece 8, and is used to pressurize the base material test piece 8;

[0074] The lifting instrument 6 is arranged on the upper part of the experimental platform 4, and is used to pull the coating material 9 coated on the upper surface of the substrate test piece 8, so as to measure the distance between the coating material 9 and the upper surface of the substrate test piece 8. cohesion.

[0075] In the optional solution of this embodiment, more preferably,

[0076] The hydraulic loading device includes a pressure tank 2 and a pressuriz...

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Abstract

The invention relates to the technical field of concrete, rock or stone testing, in particular to a method for testing an adhesive property of a coating material under a pressure water-seepage condition. The method aims to solve the technical problem that an existing testing method cannot accurately reflect the adhesive property of the coating material under a practical engineering environment, and comprises the steps of installing a concrete, rock or stone sample on a test stand; installing a pressure tank and injecting water for pressurizing; coating the coating material on an upper surfaceof the concrete, rock or stone sample; applying an adhesion agent on a surface of the coating material; starting a tension testing device for carrying out an adhesive property test under the water-seepage pressure condition. The method provided by the invention can represent the strength of the adhesive property under the water-seepage condition.

Description

technical field [0001] The invention relates to the technical field of concrete, rock or stone testing, in particular to a method for testing the bonding performance of coating materials under pressure and water seepage conditions. Background technique [0002] As the largest building material, concrete is widely used in construction, water conservancy and other projects. Due to the complex service environment of concrete materials and the characteristics of self-curing, concrete structures are often corroded, resulting in durability problems. Moreover, with environmental changes and engineering requirements The damage and property loss caused by erosion problems are also becoming more and more prominent, especially in the underground or water environment, the concrete front or back water surface is often severely damaged by the wet environment, such as cracks, damage, corrosion, etc. In order to improve the durability and service life of concrete, engineers and technicians ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 朱玉雪尹润平张帅王健王建李婷李晓宁赵海洋
Owner CNBM ZHONGYAN TECH
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