Foaming cement preparation process capable of detecting internal cracking

A technology of foamed cement and preparation process, which is applied in the direction of ceramic products, optical testing flaws/defects, applications, etc., which can solve problems such as anti-seepage, performance reduction of thermal insulation indicators, shortened service life of cement, and decline in overall strength, so as to avoid potential risk, prolonging service life, and improving uniformity

Inactive Publication Date: 2021-08-13
张健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the molding and subsequent use of cement, due to its own factors or external factors, defects will inevitably appear. Surface defects are easy to be noticed, but internal cracks are difficult to detect intuitively. Therefore, once cracks appear inside the cement Phenomena, it will lead to the decrease of the overall strength, the performance of various anti-seepage and thermal insulation indicators will be reduced, and the service life of cement will be seriously shortened.

Method used

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  • Foaming cement preparation process capable of detecting internal cracking
  • Foaming cement preparation process capable of detecting internal cracking
  • Foaming cement preparation process capable of detecting internal cracking

Examples

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Comparison scheme
Effect test

Embodiment 1

[0047] see figure 1 , a process for preparing foamed cement capable of detecting internal cracking, comprising the steps of:

[0048] S1. Take 60 parts of cement, 20 parts of fly ash, 2 parts of foam stabilizer, and 5 parts of fine sand according to the parts by weight, and stir for 40 minutes under the condition that the rotating speed is 500r / min to prepare a premix;

[0049] S2. Mix the premix and distilled water according to the mass ratio of 1:10 and put them into the mold, and take an appropriate number of pre-embedded rods and evenly embed them in the mold;

[0050] S3. Pressurize and feed the mold until the cavity remains saturated, keep the temperature at 45°C, and perform foam molding at one time, and the foaming time is 6 hours;

[0051] S4. After the foaming is completed, the foamed cement is removed from the mold, and then cured. After the curing, the surface is trimmed to ensure that the end of the pre-embedded rod is exposed to the surface of the foamed cement;...

Embodiment 2

[0063] A process for preparing foamed cement capable of detecting internal cracks, comprising the following steps:

[0064] S1. According to the parts by weight, take 70 parts of cement, 25 parts of fly ash, 4 parts of foam stabilizer, and 10 parts of fine sand, and stir for 50 minutes at a rotating speed of 550r / min to prepare a premix;

[0065] S2. Mix the premix and distilled water according to the mass ratio of 1:10 and put them into the mold, and take an appropriate number of pre-embedded rods and evenly embed them in the mold;

[0066]S3. Pressurize and feed the mold until the cavity remains saturated, keep the temperature at 50°C, and perform foam molding at one time, and the foaming time is 7 hours;

[0067] S4. After the foaming is completed, the foamed cement is removed from the mold, and then cured. After the curing, the surface is trimmed to ensure that the end of the pre-embedded rod is exposed to the surface of the foamed cement;

[0068] S5. Cut the foamed ceme...

Embodiment 3

[0071] A process for preparing foamed cement capable of detecting internal cracks, comprising the following steps:

[0072] S1. According to the parts by weight, take 80 parts of cement, 30 parts of fly ash, 5 parts of foam stabilizer, and 15 parts of fine sand, and stir for 60 minutes under the condition that the rotating speed is 600r / min to prepare the premix;

[0073] S2. Mix the premix and distilled water according to the mass ratio of 1:10 and put them into the mold, and take an appropriate number of pre-embedded rods and evenly embed them in the mold;

[0074] S3. Pressurize and feed the mold until the cavity remains saturated, keep the temperature at 55°C, and perform foam molding at one time, and the foaming time is 8 hours;

[0075] S4. After the foaming is completed, the foamed cement is removed from the mold, and then cured. After the curing, the surface is trimmed to ensure that the end of the pre-embedded rod is exposed to the surface of the foamed cement;

[00...

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Abstract

The invention discloses a foaming cement preparation technology capable of detecting internal cracking, and belongs to the technical field of cement preparation. In the forming process of foaming cement, pre-embedded rods are uniformly inserted to be synchronously formed with cement, on one hand, the pre-embedded rods can remarkably improve the overall strength of the foaming cement, and on the other hand, the pre-embedded rods can improve the foaming uniformity of the cement, the internal cracking phenomenon of the cement is detected after the cement is formed, once the cement is internally cracked, sensing sleeves on the pre-embedded rods can sense the cracking in time and synchronously crack to release the color developing microspheres, and the color developing microspheres actively migrate to the end parts of the pre-embedded rods under the action of magnetic attraction to develop color; and technicians can intuitively perceive and qualitatively judge the internal cracking position and depth, so that targeted treatment can be carried out in time, potential risks are avoided, and the service life of the foaming cement is prolonged.

Description

technical field [0001] The invention relates to the technical field of cement preparation, in particular to a foam cement preparation process capable of detecting internal cracks. Background technique [0002] Cement: powdery hydraulic inorganic gelling material. After adding water and stirring, it becomes a slurry, which can be hardened in air or in water, and can firmly bind sand, stone and other materials together. [0003] In the early years the mixture of lime and volcanic ash is very similar to lime pozzolanic cement, use it to glue concrete which made of crushed stone. After hardening, the cement not only has high strength, but also can resist the erosion of fresh water or salt water. For a long time, as an important cementing material, it is widely used in civil engineering, water conservancy, national defense and other projects. [0004] In the external wall insulation system, the commonly used insulation layer is organic materials, including polystyrene board, ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/00G01N21/91
CPCC04B28/04G01N21/91C04B18/08C04B14/06C04B24/085C04B38/00C04B2103/0068
Inventor 张健
Owner 张健
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