Concrete self-healing agent, preparation method and application method

A concrete and mixture technology, applied in the field of concrete, can solve the problems of concrete safety, durability decline, waste of manpower and material resources, user hazards, etc., and achieve the effects of prolonging the service life, saving energy, and preventing water seepage and leakage

Inactive Publication Date: 2019-03-12
河北盛冀新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If groundwater, rainwater, sewage, or corroded water penetrates into the concrete through surface cracks, it will cause corrosion, water leakage, and reduce the safety and durability of concrete, thereby causing harm to users.
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Method used

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  • Concrete self-healing agent, preparation method and application method
  • Concrete self-healing agent, preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment proposes a concrete self-healing agent, comprising the following mass proportioning components:

[0028] Mineral powder 32.68, iron powder 22, bentonite 22, calcium sulfate 12, sodium sulfate 7, ammonium acrylamide 3, glyceryl stearate 0.69, titanate coupling agent 0.63.

[0029] The preparation method is:

[0030] a. Mix bentonite, calcium sulfate, sodium sulfate and iron powder evenly, heat to 100±5°C at the same time, add titanate coupling agent while stirring, and stir evenly to obtain a mixed material,

[0031] b, add 1% glyceryl stearate of the total mass of the material to the mixed material, keep the material at 90-95 ° C, stir evenly,

[0032] c, add 2% glyceryl stearate by its mass into acrylamide, keep the material at 90-95°C, stir evenly,

[0033] d. Mix the product obtained in step b, the product obtained in step c and the ore powder evenly.

[0034] A concrete applied with a concrete self-healing agent, comprising the following mass rati...

Embodiment 2

[0038] This embodiment proposes a concrete self-healing agent, comprising the following mass proportioning components:

[0039] Mineral powder 5.14, iron powder 27, bentonite 27, calcium sulfate 18, sodium sulfate 13, ammonium acrylamide 8, glyceryl stearate 1.01, titanate coupling agent 0.85.

[0040] The preparation method is:

[0041] a. Mix bentonite, calcium sulfate, sodium sulfate and iron powder evenly, heat to 100±5°C at the same time, add titanate coupling agent while stirring, and stir evenly to obtain a mixed material,

[0042] b. Add glyceryl stearate of 1% of the mass of material a to the mixed material, keep the material at 90-95°C, and stir it evenly with a high-speed mixer.

[0043] c, add 2% glyceryl stearate by mass to acrylamide, keep the material at 90-95°C, stir evenly with a high-speed mixer,

[0044] d. Mix the product obtained in step b, the product obtained in step c and the ore powder evenly.

[0045] A concrete applied with a concrete self-healing...

Embodiment 3

[0049] This embodiment proposes a concrete self-healing agent, comprising the following mass proportioning components:

[0050] Mineral powder 21.46, iron powder 25, bentonite 22, calcium sulfate 15, sodium sulfate 10, acrylamide ammonium 5, glyceryl stearate 0.82, titanate coupling agent 0.72

[0051] The preparation method is:

[0052] a. Mix bentonite, calcium sulfate, sodium sulfate and iron powder evenly, heat to 100±5°C at the same time, add titanate coupling agent while stirring, and stir evenly to obtain a mixed material,

[0053] b, adding 1% glyceryl stearate by mass to the mixed material, keeping the material at 90-95°C, stirring at a high speed evenly,

[0054] c, add its mass 2% glyceryl stearate to acrylamide, keep the material at 90-95°C, stir at high speed evenly,

[0055] d. Mix the product obtained in step b, the product obtained in step c and the ore powder evenly.

[0056] A concrete applied with a concrete self-healing agent, comprising the following ma...

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Abstract

The invention belongs to the technical field of concrete, and provides self-healing concrete. The self-healing concrete comprises the following components according to a mass matching ratio: 5-33 parts of mineral powder, 22-27 parts of iron powder, 22-27 parts of bentonite, 12-18 parts of calcium sulfate, 7-13 parts of sodium sulfate, 3-8 parts of acrylamide, 0.6-1.1 parts of stearin, and 0.5-1 part of a titanate coupling agent. The invention further provides a preparation method for a concrete self-healing agent. The preparation method comprises the following steps: a, uniformly mixing the bentonite, the calcium sulfate, the sodium sulfate and the iron powder, and heating to 100+/-5 DEG C, stirring and adding the titanate coupling agent, and uniformly stirring, so as to obtain a mixed material; b, adding the stearin to the mixed material, wherein a dosage is 1% of a total mass of the material obtained in step a, keeping the material at 90-95 DEG C, and uniformly stirring at a high speed; c, adding the stearin which is 2% of a mass of the acrylamide to the acrylamide, keeping the material at 90-95 DEG C, and uniformly stirring; and d, uniformly mixing a product obtained in step b,a product obtained in step c and the mineral powder. Through the technical scheme, the problems in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of concrete and relates to self-healing concrete. Background technique [0002] Concrete, referred to as "concrete (tóng)": refers to the general designation of engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. [0003] Cracks will appear in concrete during use, and cracks are an important hazard of concrete. If groundwater, rainwater, sewage, or corroded water penetrates into the concrete through the cracks on the surface, it will cause corrosion and water leakage, resulting in a decrease in the safety and durability of the concrete, thereby causing har...

Claims

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Application Information

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IPC IPC(8): C04B24/40
CPCC04B40/0039C04B18/12C04B22/04C04B14/104C04B22/143C04B22/147C04B24/124C04B24/085C04B24/40
Inventor 胡现杰
Owner 河北盛冀新材料科技有限公司
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