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Concrete micro-crack grouting repairing device based on industrial calcium-based solid waste and carbon dioxide tail gas and working method

A technology of carbon dioxide and concrete, applied in the field of concrete repair, can solve the problems of not meeting the repairing requirements of concrete cracks, unsatisfactory long-term effect, poor durability and other problems, and achieve the effect of stable long-term effect, low production cost and short repair time

Pending Publication Date: 2022-07-22
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term effects are not ideal due to shrinkage and aging effects
Chemical grouting materials have problems such as high viscosity, high brittleness after curing, poor durability, and environmental pollution, and it is difficult to judge whether the grouting is integrated with the structure
In addition, although concrete has a certain self-healing ability for micro-cracks, the crack width range of self-healing ability is 0.1-0.2mm, which is far from meeting the repairing requirements of concrete cracks in actual engineering.

Method used

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  • Concrete micro-crack grouting repairing device based on industrial calcium-based solid waste and carbon dioxide tail gas and working method
  • Concrete micro-crack grouting repairing device based on industrial calcium-based solid waste and carbon dioxide tail gas and working method
  • Concrete micro-crack grouting repairing device based on industrial calcium-based solid waste and carbon dioxide tail gas and working method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A concrete micro-crack grouting repair device based on industrial calcium-based solid waste and carbon dioxide tail gas, such as Figure 1-4 As shown, including a repair agent preparation device, a repair agent delivery device and a grouting repair device;

[0042] The repairing agent preparation device includes a carbon dioxide gas tank 1 and a slurry preparation box 5, a liquid storage tank 19 is placed in the slurry preparation box 5, a water injection port 3 is arranged above the liquid storage tank 19, and the calcium base in the liquid storage tank 19 is proportionally configured. The mixed liquid of industrial solid material 16 and deionized water, the carbon dioxide gas tank 1 is industrial waste gas containing carbon dioxide, and the carbon dioxide gas tank 1 is connected to the liquid storage tank 19 through a pipeline;

[0043] The repairing agent conveying device includes a water pump 9 and a conveying hose 12, and the grouting repairing device includes a li...

Embodiment 2

[0045] A concrete micro-crack grouting repairing device based on industrial calcium-based solid waste and carbon dioxide tail gas, as described in Example 1, the difference is that the liquid storage tank 19 is provided with a stirring device 18, a pH monitor 15 and a temperature control device. The gas flow rate monitor 2 is installed on the pipeline of the carbon dioxide gas tank 1 and the liquid storage tank 19 to monitor and control the gas flow in real time.

[0046] The repair agent preparation device and the water pump are all arranged on the mobile cart 7, and the bottom of the mobile cart 7 is provided with a pulley 10, which is convenient for moving the device;

[0047] The slurry preparation box is provided with a control panel 4. The control panel 4 is connected with the pH monitor 15 and the temperature controller 17. The control panel 4 can display the solution reaction temperature and pH value changes in real time through the control panel 4, and can adjust the s...

Embodiment 3

[0050] A concrete micro-crack grouting repairing device based on industrial calcium-based solid waste and carbon dioxide tail gas, as described in Example 1, the difference is, as image 3 , 4 As shown, the heating plate 14 is an infrared heating plate, a through hole is provided in the middle of the infrared heating plate, and a fixing ring 20 is arranged in the through hole to fix the infrared heating plate at a suitable position of the liquid outlet end 21 of the liquid injection gun. Under normal circumstances, the liquid outlet end 21 of the liquid injection gun extends into the crack for the same length. If the crack depth is too large or too small, the position of the infrared heating plate needs to be adjusted so that it is close to the concrete surface, and the liquid outlet end extends into the crack. After installation, the fixing ring 20 can be loosened, the heating plate can be adjusted to a position close to the concrete surface, and the fixing ring 20 can be tig...

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Abstract

The invention relates to a concrete micro-crack grouting repairing device based on industrial calcium-based solid waste and carbon dioxide tail gas and a working method, and belongs to the field of concrete repairing. Comprising a repairing agent preparation device, a repairing agent conveying device and a grouting repairing device. A water filling nozzle is arranged above the liquid storage tank, the liquid storage tank is filled with a mixed solution of a calcium-based industrial solid material and deionized water which are proportionally prepared, and the carbon dioxide gas tank is connected to the liquid storage tank through a pipeline; the repairing agent conveying device comprises a water pump and a conveying hose, the grouting repairing device comprises a liquid injection gun, the water pump conveys a solution in the liquid storage tank to the liquid injection gun through the conveying hose, and a heating plate is arranged on the liquid injection gun. According to the invention, carbon dioxide can be sealed, and the prepared calcium bicarbonate solution is used as a concrete microcrack repairing agent, has high fluidity, can generate calcium carbonate crystals with a cementing effect in concrete microcracks, fills gaps, builds a net-shaped structure, and gradually forms an integral structure with original concrete to complete crack repairing.

Description

technical field [0001] The invention relates to a concrete micro-crack grouting repairing device and a working method based on industrial calcium-based solid waste and carbon dioxide tail gas, and belongs to the technical field of concrete repairing. Background technique [0002] Concrete is the main construction material for building structures and plays a decisive role in the quality and service life of buildings. Due to its own brittleness and the influence of the service environment, concrete will produce different degrees of micro-cracks and local damage. If the cracks are not repaired in time, they will expand into macro-cracks, and external water and erosive media will gradually infiltrate from the surface defects of the material. , which will eventually lead to accelerated deterioration of concrete, resulting in immeasurable losses. Therefore, taking effective measures to repair micro-cracks in concrete structures is of great significance for improving the overall q...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02B01D53/62B09B3/00C01F11/18
CPCE04G23/0203E04G23/0211B01D53/62B09B3/00C01F11/18
Inventor 张洪智邵滢璇凌一峰葛智张宁管延华孙仁娟
Owner SHANDONG UNIV
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