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Carbon nano-tube cement-based waterproof material and preparation method thereof

A carbon nanotube and waterproof material technology, which is used in the waterproofing and plugging of culverts, reservoirs and dams, and the waterproofing of parts. It can solve the problem that the cement-based materials are prone to cracks, the performance is weak, and the interface transition zone affects the service life of buildings, etc. problem, to achieve the effect of good waterproof performance, improved impermeability and long service life

Inactive Publication Date: 2012-07-25
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the cement-based waterproof material is a multi-phase composite brittle material, there is a weak interfacial transition zone between different phases, which leads to cracks easily inside the cement-based material, resulting in poor waterproof performance and seriously affecting the service life of the building.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Carbon nanotube cement-based waterproof material, 1.2 parts by mass of water agent, and 20 parts by mass of powder agent.

[0031] The water formulation includes the following components in parts by mass: 0.01 parts of carbon nanotubes, 1 part of water, and 0.1 part of dispersant; the carbon nanotubes are multi-walled carbon nanotubes, the aspect ratio is 500-3000, and the conductivity Greater than 100 s / cm, the dispersant is TNDISR (OP-10).

[0032] The powder includes the following components in parts by mass: 6 parts of cement, 13 parts of siliceous fine sand, 0.6 parts of industrial waste (cinder), 1.5 parts of superfine siliceous mineral admixture, 1.5 parts of silica-alumina mineral admixture, high-efficiency 0.2 part of water-releasing admixture, 0.1 part of superplasticizer. The cement is Portland cement with a strength grade of 42.5; the superfine siliceous mineral admixture is superfine silica fume, and the specific surface area is 18000m 2 / kg, SiO 2 The c...

Embodiment 2

[0038] Carbon nanotube cement-based waterproof material, 1.5 parts by mass of water agent, and 25 parts by mass of powder agent.

[0039] The water formulation includes the following components in parts by mass: 0.03 parts of carbon nanotubes, 0.8 parts of water, and 0.3 parts of dispersant; the carbon nanotubes are multi-walled carbon nanotubes, with an aspect ratio of 500-3000 and an electrical conductivity of Greater than 100 s / cm.

[0040] The powder includes the following components in parts by mass: 9 parts of cement, 12 parts of siliceous fine sand, 1 part of industrial waste (low-alkalinity cinder), 2 parts of superfine siliceous mineral admixture, 3.5 parts of silica-alumina mineral admixture parts, 0.4 parts of high-efficiency water-releasing admixture, and 0.3 parts of superplasticizer. The cement is Portland cement with a strength grade of 42.5; the superfine siliceous mineral admixture is superfine silica fume, and the specific surface area is 18000m 2 / kg, SiO ...

Embodiment 3

[0045] For the carbon nanotube cement-based waterproof material, the water agent accounts for 2 parts by mass, and the powder agent accounts for 15 parts by mass.

[0046] The water formulation includes the following components in parts by mass: 0.02 parts of carbon nanotubes, 1.2 parts of water, and 0.2 parts of dispersant; the carbon nanotubes are multi-walled carbon nanotubes, with an aspect ratio of 500-3000 and a conductivity of Greater than 100 s / cm. Dispersant Gum Arabic powder.

[0047] The powder includes the following components in parts by mass: 7 parts of cement, 13 parts of siliceous fine sand, 0.8 parts of industrial waste slag (steel slag with low alkalinity), 0.8 parts of superfine siliceous mineral admixture, 2.5 parts of silica-alumina mineral admixture part, 0.1 part of high-efficiency water-releasing admixture, and 0.2 part of superplasticizer. The cement is Portland cement with a strength grade of 42.5; the superfine siliceous mineral admixture is superf...

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Abstract

The invention relates to a carbon nano-tube cement-based waterproof material and a preparation method thereof. The waterproof material comprises powder portion and water portion, the water portion consists of components including, by mass, from 0.01 to 0.03 part of carbon nano-tubes, from 0.8 to 1.2 parts of water and from 0.1 to 0.3 part of dispersing agent, and the powder portion consists of components including, by mass, from 6 to 9 parts of cement, from 12 to 14 parts of fine siliceous sand, from 0.6 to 1 part of industrial waste residues, from 0.8 to 2 parts of superfine siliceous mineral additive, from 1.5 to 3.5 parts of silicon-aluminum mineral additive, from 0.1 to 0.4 part of high-efficiency water releasing additive and from 0.1 to 0.3 part of super plasticizer. A preparation process includes mixing the components of the water portion at first; then adding the components of the powder portion into the water portion; and obtaining the carbon nano-tube cement-based waterproof material by means of mixing the water portion with the powder portion. The carbon nano-tube cement-based waterproof material is fine in waterproof effect, durable in waterproofing and fine in durability, has repeated self-healing repair capacity, can strengthen a coating of the surface of a building, avoids cracks and is an environment-friendly waterproof material.

Description

technical field [0001] The invention relates to a carbon nanotube cement-based waterproof material, which is suitable for waterproofing of swimming pools, basements and other parts, and can also be used for painting the outer walls of buildings, repairing and strengthening the surface of hydraulic structures, and underground continuous walls and tunnels. The waterproof and plugging construction of culverts and reservoir dams belongs to the technical field of engineering materials, and the invention also relates to a preparation method of a carbon nanotube cement-based waterproof material. Background technique [0002] As the scale of construction continues to increase, concrete is used more and more widely. However, due to the fact that concrete walls are prone to micro-cracks and poor impermeability, residential buildings are prone to problems such as basement leakage, toilet water seepage, and wall water seepage. Other waterproof materials with different action mechanisms ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 刘小艳刘爱华明维王婷周茂昆蒋亚清
Owner HOHAI UNIV
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