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Preparation method of crack-resistant self-repairing concrete

A concrete and self-repairing technology, which is applied in the field of building material preparation, can solve problems such as difficult to find cracks, decline in concrete mechanical properties, and easy cracks, so as to inhibit the occurrence and development of cracks, ease stress concentration, and reduce stress intensity factor effect

Inactive Publication Date: 2018-10-09
FOSHAN LINGCHAO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is aimed at the low tensile strength of the current traditional concrete materials, which easily leads to cracks and reduces the mechanical properties of concrete, while the conventional repair method of concrete cracks mainly focuses on post-mortem repairs: artificially observe cracks After the formation, a series of remedial measures are taken to repair the cracks. Since these repair techniques consume a lot of manpower and material resources, and the cracks in some parts are difficult to find, a preparation method of crack-resistant self-healing concrete is provided.

Method used

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  • Preparation method of crack-resistant self-repairing concrete

Examples

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example 1

[0019] Mix the river bottom mud, lime milk and leaves in a mass ratio of 1:2:1 and put them into a ceramic tank as a fermentation substrate, add water to the ceramic tank along the wall of the ceramic tank until the fermentation substrate is completely submerged, and seal the fermentation Tank, sealed and fermented at a temperature of 30°C for 30 days; after the fermentation was completed, the fermentation product was taken out, and freeze-dried at -15°C with a vacuum freeze dryer to obtain a dried product, which was combined with a length of 5 mm and an aspect ratio of 30 steel fibers were mixed at a mass ratio of 1:2 to obtain self-made fillers; the waste glass was collected and put into a pulverizer to be pulverized and passed through a 200-mesh sieve to obtain sieved glass powder, which was then poured into a corundum crucible , then put the corundum crucible into the center of the silicon carbide rod resistance furnace, heat up to 1200°C at a rate of 10°C / min, and melt it ...

example 2

[0021] Mix the river bottom mud, lime milk and leaves in a mass ratio of 1:2:1 and put them into a ceramic tank as a fermentation substrate, add water to the ceramic tank along the wall of the ceramic tank until the fermentation substrate is completely submerged, and seal the fermentation tank, sealed and fermented at a temperature of 33°C for 35 days; after the end of the fermentation, the fermentation product was taken out and freeze-dried at -13°C with a vacuum freeze dryer to obtain a dried product. 33 steel fibers were mixed at a mass ratio of 1:2 to obtain self-made fillers; the waste glass was collected and put into a pulverizer to be pulverized and passed through a 200-mesh sieve to obtain sieved glass powder, which was then poured into a corundum crucible , and then put the corundum crucible into the center of the silicon carbide rod resistance furnace, heat up to 1250°C at a rate of 10°C / min, and melt it for 2 hours to obtain molten glass; inject the obtained molten g...

example 3

[0023]Mix the river bottom mud, lime milk and leaves in a mass ratio of 1:2:1 and put them into a ceramic tank as a fermentation substrate, add water to the ceramic tank along the wall of the ceramic tank until the fermentation substrate is completely submerged, and seal the fermentation tank, sealed and fermented at a temperature of 35°C for 40 days; after the end of fermentation, the fermentation product was taken out and freeze-dried at -10°C with a vacuum freeze dryer to obtain a dried product. 35 steel fibers were mixed at a mass ratio of 1:2 to obtain self-made fillers; the waste glass was collected and put into a pulverizer to be pulverized and passed through a 200-mesh sieve to collect sieved glass powder, which was then poured into a corundum crucible , then put the corundum crucible into the center of the silicon carbide rod resistance furnace, heat up to 1300°C at a rate of 10°C / min, and melt it for 3 hours to obtain molten glass; inject the obtained molten glass int...

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Abstract

The invention relates to a preparation method of crack-resistant self-repairing concrete, belonging to the technical field of building material preparation. The preparation method comprises the following steps: firstly, mixing and fermenting bed silt, lime milk and eucalyptus leaves, freezing and drying a fermentation product, mixing with ultra-fine ultra-short steel fiber to obtain a self-made filler, then preparing thin-walled glass fiber tubes, injecting an epoxy adhesive and citric acid into the thin-walled glass fiber tubes to obtain self-made functional glass fiber tubes, and mixing theself-made filler, the self-made functional glass fiber tubes and other components such as cement, so as to finally obtain the crack-resistant self-repairing concrete. The anti-cracking self-repairingconcrete has excellent anti-cracking performance, can be self repaired after generating micro-cracks, has strong mechanical properties and has broad application prospects.

Description

technical field [0001] The invention relates to a method for preparing crack-resistant self-repairing concrete, which belongs to the technical field of building material preparation. Background technique [0002] Concrete has played an irreplaceable role in the country's infrastructure due to its convenient materials, low price, and good compressive performance. However, due to the relatively low tensile strength of concrete, cracks are inevitable in practical engineering applications. The effects of cracks in the concrete structure include the decline in mechanical properties and the decrease in the ability to resist external ion penetration. Conventional repair methods for concrete cracks mainly focus on after-the-fact repairs: a series of remedial measures are taken to repair the cracks after the cracks are observed artificially. Because these after-the-fact repair techniques have expended a lot of manpower and material resources, and the cracks in some parts are diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/343C04B2201/50C04B14/42C04B18/021C04B14/48C04B14/068C04B22/10C04B24/121
Inventor 裘友玖林茂梅
Owner FOSHAN LINGCHAO NEW MATERIAL CO LTD
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