A kind of self-healing anti-cracking concrete and preparation method thereof

A concrete and self-healing technology, applied in the field of concrete, can solve the problems of increasing cracks and poor repairing effect, and achieve the effect of preventing further expansion of cracks and not easy to stick to each other.

Active Publication Date: 2022-07-08
BEIJING ZEHUA ROAD & BRIDGE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the related technologies mentioned above, the inventor believes that when repairing the cracks, it is necessary to rely on the infiltration of external water. If the infiltration of external water is not timely, the cracks will gradually increase and the repair effect will be poor.

Method used

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  • A kind of self-healing anti-cracking concrete and preparation method thereof
  • A kind of self-healing anti-cracking concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0043] The glass fiber tube into which the adhesive is injected, the preparation steps are as follows:

[0044] 1) pulverizing and heating the waste glass to obtain glass liquid;

[0045] 2) Inject the glass liquid into the mold to obtain a glass fiber tube with one end sealed and one end open. The outer diameter of the glass fiber tube is 2mm, the length is 15cm, and the wall thickness is 0.3mm, and a liquid adhesive is injected into the glass fiber tube, The injection amount of the adhesive is 80% of the volume of the glass fiber tube, and then the obtained glass fiber tube is sealed by hot pressing to obtain the glass fiber tube injected with the adhesive.

preparation example 2

[0047] The glass fiber tube into which the adhesive is injected, the preparation steps are as follows:

[0048] 1) pulverizing and heating the waste glass to obtain glass liquid;

[0049] 2) Inject the glass liquid into the mold to obtain a glass fiber tube with one end sealed and one end open. The outer diameter of the glass fiber tube is 4mm, the length is 10cm, and the wall thickness is 0.5mm, and a liquid adhesive is injected into the glass fiber tube, The injection amount of the adhesive is 70% of the volume of the glass fiber tube, and then the obtained glass fiber tube is sealed by hot pressing to obtain the glass fiber tube injected with the adhesive.

preparation example 3

[0051] The glass fiber tube into which the adhesive is injected, the preparation steps are as follows:

[0052] 1) pulverizing and heating the waste glass to obtain glass liquid;

[0053] 2) Inject the glass liquid into the mold to obtain a glass fiber tube with one end sealed and one end open. The outer diameter of the glass fiber tube is 3mm, the length is 13cm, and the wall thickness is 0.4mm, and a liquid adhesive is injected into the glass fiber tube, The injection amount of the adhesive is 75% of the volume of the glass fiber tube, and then the obtained glass fiber tube is end-sealed by hot pressing to obtain the glass fiber tube injected with the adhesive.

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Abstract

The application relates to the field of concrete, and specifically discloses a self-healing anti-cracking concrete, which is prepared from the following raw materials by weight: 100-110 parts of Portland cement, 10-15 parts of fly ash, and 140 parts of fine sand. -160 parts, 200-220 parts of stones, 40-45 parts of water, 16-20 parts of calcium chloride, 10-15 parts of calcium bicarbonate, 0.7-1.4 parts of water reducing agent, 16- of glass fiber tube with adhesive injection 20 parts, 17-22 parts of glass fiber tubes injected with citric acid solution; it has the advantages of timely repairing effect and preventing cracks from continuing to expand; in addition, a preparation method of self-healing crack-resistant concrete is also provided.

Description

technical field [0001] The present application relates to the field of concrete, and more particularly, to a self-healing anti-cracking concrete and a preparation method thereof. Background technique [0002] Concrete material has a certain compressive strength, and at the same time has the advantages of good integrity, high moldability and low cost, but the tensile performance of concrete material is poor, usually combined with steel bars to form reinforced concrete structures, which are widely used in industrial and civil applications. in the building. In practical engineering, the reinforced concrete structure often cracks due to the influence of the external environment. The existence of cracks will allow the corrosive substances in the environment to enter the interior of the reinforced concrete structure faster, causing the steel to be corroded and accelerating the carbonization and sulfuric acid of the concrete. The phenomenon of root erosion. [0003] Self-healing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B24/06C04B24/28C03B37/01C03B37/15C04B111/27
CPCC04B28/04C04B40/0046C03B37/01C03B37/15C04B2111/27C04B2201/52C04B18/08C04B14/06C04B14/02C04B22/124C04B22/106C04B2103/302C04B14/42C04B24/06C04B24/281Y02W30/91
Inventor 楚建平
Owner BEIJING ZEHUA ROAD & BRIDGE ENG CO LTD
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