Graphene/carbon nanotube cement-based waterproof material and preparation method thereof

A technology of carbon nanotubes and waterproof materials, applied in the field of waterproof materials, can solve the problems of poor waterproof performance, weak performance interface transition zone, and easy cracks in cement-based materials, so as to achieve low base surface requirements, prolong service life, and improve The effect of impermeability

Inactive Publication Date: 2017-08-04
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

[0022] Graphene / carbon nanotube cement-based waterproof material, 1.2 parts by mass of water formulation, 15 parts by mass of powder formulation. The water formulation comprises the following components in parts by mass: 0.005 part of graphene, 0.005 part of carbon nanotube water, 0.8 part of water, 0.1 part of dispersant, 0.1 part of defoamer; described graphene is graphene oxide, graphite The mass of oxygen in the alkene is 0.1%, the thickness is 1 nm, and the size is 100 nm; the carbon nanotubes are single-walled carbon nanotubes with an aspect ratio of 500 and a length of 10 μm. The dispersant is TNDISR (OP10), and the defoamer is tributyl phosphate. The powder includes the following components in parts by mass: 6 parts of Portland cement, 12 parts of siliceous fine sand, 0.6 part of industrial waste (cinder), 0.8 part of superfine siliceous mineral admixture, and 1.5 parts of silica-alumina mineral admixture , 1.2 parts of bentonite, and 0.1 part of shrinkage-reducing wa...

Embodiment 2

[0026] Graphene / carbon nanotube cement-based waterproof material, 1.6 parts by mass of water, 20 parts by mass of powder. The water formulation includes the following components in parts by mass: 0.02 part of graphene, 0.015 part of carbon nanotube water, 1 part of water, 0.2 part of dispersant, and 0.2 part of defoamer; the graphene is graphene oxide, graphite The mass of oxygen in the alkene is 15%, the thickness is 25 nm, and the size is 25 μm; the carbon nanotubes are multi-walled carbon nanotubes with an aspect ratio of 1700 and a length of 55 μm. The dispersant is sodium dodecylbenzenesulfonate, and the defoamer is tributyl phosphate. The powder includes the following components in parts by mass: 7.5 parts of Portland cement, 13 parts of siliceous fine sand, 0.8 parts of industrial waste (cinder), 1.4 parts of superfine siliceous mineral admixture, and 2.5 parts of silica-alumina mineral admixture , 1.6 parts of bentonite, and 0.25 parts of shrinkage-reducing water redu...

Embodiment 3

[0030]Graphene / carbon nanotube cement-based waterproof material, 2 parts by mass of water formulation, 25 parts by mass of powder formulation. The water formulation includes the following components in parts by mass: 0.03 parts of graphene, 0.03 parts of carbon nanotube water, 1.2 parts of water, 0.3 parts of dispersant, and 0.3 parts of defoamer; the graphene is graphene oxide, graphite The mass of oxygen in the alkene is 30%, the thickness is 50 nm, and the size is 50 μm; the carbon nanotubes are multi-walled carbon nanotubes with an aspect ratio of 3000 and a length of 100 μm. The dispersant is cooked Arabic gum powder, and the defoamer is tributyl phosphate. The powder includes the following components in parts by mass: 9 parts of Portland cement, 14 parts of siliceous fine sand, 1 part of industrial waste (coal cinder), 2 parts of superfine siliceous mineral admixture, and 3.5 parts of silica-alumina mineral admixture , 2 parts of bentonite, 0.4 parts of shrinkage-reduci...

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Abstract

The invention discloses a graphene / carbon nanotube cement-based waterproof material and a preparation method thereof. The waterproof material is prepared from the following raw materials in parts by weight: 1.2-2 parts of an aqueous solution and 15-25 parts of powder, wherein the aqueous solution is prepared from the following materials in parts by weight: 0.005-0.03 part of graphene, 0.005-0.3 part of a carbon nanotube, 0.8-1.2 parts of water, 0.1-0.3 part of a dispersing agent and 0.1-0.3 part of a defoaming agent; and the powder is prepared from the following materials in parts by weight: 6-9 parts of portland cement, 12-14 parts of silicious fine sand, 0.6-1 part of an industrial residue, 0.8-2 parts of a superfine silica mineral admixture, 1.5-3.5 parts of a silica mineral admixture, 1.2-2.2 parts of bentonite and 0.1-0.4 part of a reductive water reducing agent. The graphene / carbon nanotube cement-based waterproof material has the advantages that firstly, the graphene / carbon nanotube cement-based waterproof material has good impermeability and good impervious self-healing ability and the service life is prolonged; and secondly, the waterproof material can form a compact surface enhancement layer on the surface of a concrete structure, can play a waterproofing role, and is capable of reducing the carbonization depth of concrete.

Description

technical field [0001] The invention relates to a waterproof material, in particular to a graphene / carbon nanotube cement-based waterproof material and a preparation method thereof. Background technique [0002] As the scale of construction continues to increase, concrete is used more and more widely. Concrete is the most commonly used building material in modern buildings. Since concrete is essentially a porous material, micropores and microcracks inevitably exist on its surface. These structural imperfections provide pathways for water molecules to seep into the interior of the concrete. Residential houses are prone to problems such as basement leakage, toilet water seepage, and wall water seepage. Other waterproof materials with different action mechanisms basically face the problem of aging, so they can only exert their waterproof effect in a short period of time, resulting in frequent leakage of waterproof parts. [0003] Building waterproofing is a very important par...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2111/27C04B14/06C04B2103/408C04B2103/50C04B14/024C04B14/022C04B18/10C04B14/106C04B2103/302
Inventor 刘小艳李田雨朱杰张玉梅杨恒陈奕宁刘磊田甜梁涛刘爱华刘开琼皇皝乔洋吴春颖夏苏鲁
Owner HOHAI UNIV
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