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Sleeve grouting forming quality detection method based on X-ray absorption contrast improvement and detection device thereof

A technology for grouting and forming quality of sleeves, applied in measuring devices, material analysis using wave/particle radiation, instruments, etc. Large contrast difference, the effect of increasing the detection range

Pending Publication Date: 2022-06-03
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a sleeve grouting quality detection method based on X-ray absorption contrast enhancement and its detection device, which solves the limitations of the above-mentioned detection method in field promotion and application. To judge the quality of sleeve grouting, the industry still lacks a fast, efficient, widely applicable, less destructive, and less error detection method.

Method used

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  • Sleeve grouting forming quality detection method based on X-ray absorption contrast improvement and detection device thereof
  • Sleeve grouting forming quality detection method based on X-ray absorption contrast improvement and detection device thereof
  • Sleeve grouting forming quality detection method based on X-ray absorption contrast improvement and detection device thereof

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Experimental program
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Effect test

Embodiment 1

[0070] As a preferred embodiment of the present invention, it comprises the following steps of mixing:

[0071] Step 1, take by weighing 2.5kg barium sulfate powder (barium sulfate powder purity is 99%, particle diameter is 5 μm), take by weighing 47.5kg grouting material, the sum of the two masses is 50kg, put the grouting material and barium sulfate powder into the mixer Medium pre-mixing, the stirring rate is 240r / min~280r / min, and the stirring time is 3min;

[0072] Step 2, after the stirring is completed, take out the mixed grouting material with a mass of about 15kg for use;

[0073] Step 3, add 6 liters of water to the mixer for stirring, the stirring rate is 150r / min, and the stirring time is 2min;

[0074] Step 4, add the mixed grouting material taken out in step 2 into the mixer for stirring, the stirring rate is 240r / min~280r / min, and the stirring time is 3min;

[0075] Step 5: After the preparation of the mixed grouting material is completed, stand still for 2 minu...

Embodiment 2

[0088] As a preferred embodiment of the present invention, it comprises the following steps of mixing:

[0089] Step 1, take by weighing 5kg barium sulfate powder (purity of barium sulfate powder is 99%, particle diameter is 5 μm), take by weighing 45kg grouting material, the sum of the quality of the two is 50kg, and the grouting material and barium sulfate powder are put into the mixer for pre-processing. Mixing, the stirring rate is 240r / min~280r / min, and the stirring time is 3min;

[0090] Step 2, after the stirring is completed, take out the mixed grouting material with a mass of about 15kg for use;

[0091] Step 3, add 6 liters of water to the mixer for stirring, the stirring rate is 150r / min, and the stirring time is 2min;

[0092] Step 4, add the mixed grouting material taken out in step 2 into the mixer for stirring, the stirring rate is 240r / min~280r / min, and the stirring time is 3min;

[0093] Step 5: After the preparation of the mixed grouting material is complet...

Embodiment 3

[0106] As a preferred embodiment of the present invention, it comprises the following steps of mixing:

[0107] Step 1, take by weighing 7.5kg barium sulfate powder (barium sulfate powder purity is 99%, particle diameter is 5 μm), take by weighing 42.5kg grouting material, the sum of the two masses is 50kg, put the grouting material and barium sulfate powder into the mixer Medium pre-mixing, the stirring rate is 240r / min~280r / min, and the stirring time is 3min;

[0108] Step 2, after the stirring is completed, take out the mixed grouting material with a mass of about 15kg for use;

[0109] Step 3, add 6 liters of water to the mixer for stirring, the stirring rate is 150r / min, and the stirring time is 2min;

[0110] Step 4, add the mixed grouting material taken out in step 2 into the mixer for stirring, the stirring rate is 240r / min~280r / min, and the stirring time is 3min;

[0111] Step 5: After the preparation of the mixed grouting material is completed, stand still for 2 mi...

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Abstract

The invention relates to the technical field of nondestructive testing of building structures, and discloses a sleeve grouting forming quality detection method based on improvement of X-ray absorption contrast, which comprises the following steps: mixing: putting a grouting material and barium sulfate powder into a stirrer for premixing at the stirring speed of 240-280 r / min for 3 minutes, and after stirring is completed, putting the grouting material and barium sulfate powder into the stirrer for pre-mixing; and taking out about 30% by mass of the mixed grouting material for later use, and adding water accounting for 12% of the sum of the mass of the mixed grouting material into the stirrer for stirring. According to the method, the barium sulfate powder is added into the grouting material, and the barium sulfate powder and the grouting material are fully mixed, so that the absorption contrast of the mixed slurry to X rays is improved, the contrast difference between the grouting material and grouting defects is increased, and accurate judgment of the grouting fullness and the grouting node internal defects is realized; compared with the conventional X-ray detection, the portable X-ray detector has the advantages that the technical progress is realized, and meanwhile, the portable X-ray detector has popularization performance.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing of building structures, in particular to a quality testing method and a testing device for sleeve grouting molding based on the improvement of X-ray absorption contrast. Background technique [0002] In the prefabricated concrete structure, the grouting connection of the steel sleeve is widely used. This connection technology pre-embeds the grouting sleeve in the prefabricated component. After the component is installed on site, the special high-strength grouting material is poured into the gap between the sleeve and the steel bar. The steel bars are anchored in the sleeve. Therefore, the density and fullness of the grouting material in the sleeve directly affect the safety and reliability of the connecting nodes and the overall structure. The inspection and supervision of its forming quality also guarantees the prefabricated construction project. important measure of quality. [...

Claims

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Application Information

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IPC IPC(8): G01N23/041G01N23/083
CPCG01N23/041G01N23/083G01N2223/04G01N2223/1016G01N2223/646
Inventor 余地华李松廖聪赖国梁邓昌福刘锐许贵传郑沙胡银波张海龙边毓敏寇明春
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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