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

A technology of carbon nanotubes and waterproof materials, which is applied in the field of waterproofing and plugging of culverts, reservoirs and dams, and the waterproofing of parts. It can solve the problems of cement-based materials that are prone to cracks, weak interface transition areas, and affecting the service life of buildings, etc. problems, achieve good waterproof performance, improve impermeability, and long service life

Inactive Publication Date: 2013-07-03
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 and 20 parts by mass of powder.

[0031] The water agent includes the following components in parts by mass: 0.01 part of carbon nanotubes, 1 part of water, and 0.1 part of dispersant; the carbon nanotubes are multi-walled carbon nanotubes with an aspect ratio of 500-3000, and electrical conductivity More 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 fine siliceous sand, 0.6 parts of industrial waste (cinder), 1.5 parts of ultra-fine siliceous mineral admixtures, 1.5 parts of silicoaluminous mineral admixtures, high efficiency 0.2 part of water-releasing admixture and 0.1 part of superplasticizer. The cement is Portland cement with strength grade 42.5; the superfine siliceous mineral admixture is superfine silica fume with a specific surface area of ​​18000m 2 / kg, SiO 2 The content is not less...

Embodiment 2

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

[0039] The water agent 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 electrical conductivity More 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 residue (low alkalinity cinder), 2 parts of superfine siliceous mineral admixture, and 3.5 of silicoaluminous mineral admixture Parts, 0.4 parts of high-efficiency water-releasing admixture, 0.3 parts of superplasticizer. The cement is Portland cement with strength grade 42.5; the superfine siliceous mineral admixture is superfine silica fume with a specific surface area of ​​18000m 2 / kg, SiO 2 The content is not less than 92%; ...

Embodiment 3

[0045] The carbon nanotube cement-based waterproof material has 2 parts by mass for water and 15 parts by mass for powder.

[0046] The water agent 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 electrical conductivity More than 100 s / cm. Dispersant Arabic cooked gum powder.

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

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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 swimming pools, basements and other parts, and can also be used for painting exterior walls of buildings, repairing and strengthening hydraulic structures, as well as underground continuous walls and tunnels. The waterproofing and plugging construction of culverts, reservoirs and dams belong to the technical field of engineering materials. The invention also relates to a method for preparing carbon nanotube cement-based waterproofing materials. Background technique [0002] As the scale of construction continues to increase, concrete is used more and more widely, but because concrete walls are prone to micro-cracks and poor impermeability, residential buildings are prone to problems such as basement leakage, toilet water leakage, and wall water leakage. Other waterproof materials with different mechanisms of action basically face the problem of a...

Claims

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Application Information

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Patent Type & Authority Patents(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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