Concrete crack repairing material based on phosphorus magnesium material and construction technology thereof

A technology of crack repair and construction technology, applied in the field of concrete repair, which can solve the problems of low bond strength between old and new materials, unsuitable resin infusion method, and weakened overall performance of the structure, so as to achieve low dry shrinkage and high flexural strength , the effect of increasing strength

Inactive Publication Date: 2018-11-23
GUIZHOU PHOSPHORUS MAGNESIUM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are disadvantages such as high cost, easy aging, short service life, harm to the human body during construction, complicated construction technology, and high cost; when the cracks are active, leaky, unable to dry out or the number of cracks is extremely large, it is usually not suitable to use resin Perfusion
[0004] Using cement mortar to treat concrete cracks, there are problems such as low bonding strength between the old and new materials, the overall performance of the structure will be weakened, long curing time is required, and the construction process is relatively complicated.
[0005] Therefore, it is necessary to find a concrete with short setting time, good durability, high wear resistance, no need for long curing time, applicable to various concrete cracks, and can solve the problems of high cost, easy aging and short service life in the prior art. , Concrete crack repair materials that are harmful to the human body during construction, complex construction technology, low bonding strength at the joint surface of new and old materials, weakened overall performance of the structure, and require a long maintenance time are urgently needed.

Method used

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  • Concrete crack repairing material based on phosphorus magnesium material and construction technology thereof
  • Concrete crack repairing material based on phosphorus magnesium material and construction technology thereof
  • Concrete crack repairing material based on phosphorus magnesium material and construction technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] (1) Grooving: use a concrete wall slotting machine to chisel grooves along the cracks on the cracked concrete structure surface, the groove width is 35mm, the depth is 40mm, the shape is V-shaped, and the grooves are cleaned with high-pressure air;

[0087] (2) Mixing material: raw materials such as monoammonium phosphate, magnesium oxide, borax, admixture, admixture, aggregate and other raw materials of the concrete crack repair material A based on phosphorus and magnesium materials are used by the metering system according to a certain amount in a specific production site. According to the proportion measurement, the phosphorus-magnesium-based dry-mixed material is prepared through the mixing and stirring system, packed and shipped to the site, and then the required amount of phosphorus-magnesium-based dry-mixed material is put into the mixing tank, and the specified amount of water is added to the tank to ensure that the fluidity is 220mm , stir evenly;

[0088] (3) ...

Embodiment 2

[0093] (1) Grooving: use a concrete wall slotting machine to chisel grooves along the cracks on the cracked concrete structure surface, the groove width is 20mm, the depth is 20mm, the shape is U-shaped, and the grooves are cleaned with high-pressure air;

[0094] (2) Mixing material: raw materials such as monoammonium phosphate, magnesium oxide, borax, admixture, admixture, aggregate and other raw materials of the concrete crack repair material A based on phosphorus and magnesium materials are used by the metering system according to a certain amount in a specific production site. According to the ratio measurement, the phosphorus-magnesium-based dry-mixed material is prepared through the mixing and stirring system, packed and shipped to the site, and then the required amount of phosphorus-magnesium-based dry-mixed material is put into the mixing tank, and the specified amount of water is added to the tank to ensure that the fluidity is 180mm , stir evenly;

[0095] (3) Grout...

Embodiment 3

[0100] (1) Grooving: use a concrete wall slotting machine to chisel grooves along the cracks on the cracked concrete structure surface, the groove width is 50mm, the depth is 60mm, the shape is V-shaped, and the grooves are cleaned with high-pressure air;

[0101] (2) Mixing material: raw materials such as monoammonium phosphate, magnesium oxide, borax, admixture, admixture, aggregate and other raw materials of the concrete crack repair material A based on phosphorus and magnesium materials are used by the metering system according to a certain amount in a specific production site. According to the ratio measurement, the phosphorus-magnesium-based dry-mixed material is prepared through the mixing system, packed and shipped to the site, and then the required amount of phosphorus-magnesium-based dry-mixed material is put into the mixing tank, and the specified amount of water is added to the tank to ensure that the fluidity is 260mm , stir evenly;

[0102] (3) Grouting: without ...

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Abstract

The invention relates to the technical field of the concrete repair and in particular to a concrete crack repairing material based on a phosphorus magnesium material and a construction technology thereof. The concrete crack repairing material based on the phosphorus magnesium material is obtained by mixing monoammonium phosphate, magnesium oxide, borax or boric acid, an additive, an admixture andaggregate according to a specific proportion, and in a repairing process of a concrete crack, interface treatment does not need to be performed. The prepared concrete crack repairing material based onthe phosphorus magnesium material has the characteristics of short coagulation time, high compressive strength in early stage, high breaking strength, high bonding strength, low dry shrinkage rate, good durability, high abrasive resistance and the like, and is capable of solving problems in the prior art that cost is high, ageing is easy and service life is short, the material is harmful to a human body in a construction process, the construction technology is complicated, the bonding strength of a bonding surface of old and new materials is low, integrality of a repairing structure is weak,longer maintenance time is needed and the like.

Description

technical field [0001] The invention relates to the technical field of concrete repair, in particular to a concrete crack repair material based on phosphorus and magnesium materials and a construction process thereof. Background technique [0002] Concrete cracks are the physical structural changes of concrete structures due to the effects of internal and external factors, and cracks are the main reason for the reduction of the bearing capacity, durability and water resistance of concrete structures. The most common treatment methods for concrete cracks are resin treatment and cement mortar repair. [0003] Epoxy resin treatment methods include: low-pressure pouring method, grouting method and grooving filling method. There are disadvantages such as high cost, easy aging, short service life, harm to the human body during construction, complicated construction technology, and high cost; when the cracks are active, leaky, unable to dry out or the number of cracks is extremely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B111/72
CPCC04B28/344C04B2111/72C04B2201/05C04B2201/50C04B22/066C04B22/0013C04B2103/302C04B18/08C04B14/106C04B14/06
Inventor 尤超丁修平刘敏田芳龙忠兴刘俊才马骥安柯
Owner GUIZHOU PHOSPHORUS MAGNESIUM MATERIAL CO LTD
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