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Graphene electric-conduction concrete

A technology of conductive concrete and graphene, which is applied in the field of concrete materials, can solve the problems that conductive concrete cannot balance mechanics and conductivity, performance requirements, and poor durability, and achieve the effects of good durability, good conductivity, and easy production

Inactive Publication Date: 2016-11-09
GUANGZHOU UNIVERSITY
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Problems solved by technology

[0005] In view of the above problems, the present invention provides a graphene conductive concrete with good conductivity, high mechanical strength, stable resistivity and good durability, which solves the problem that the conductive concrete in the related art cannot meet the performance requirements of both mechanics and conductivity and has poor durability. The problem

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  • Graphene electric-conduction concrete

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Embodiment Construction

[0016] The present invention is further described in conjunction with the following examples.

[0017] The graphene conductive concrete of the present embodiment includes Portland cement and sand, and graphene is added as a conductive phase to form graphene conductive concrete. The percentage of each component relative to the total mass of Portland cement and sand is: graphene 0.05~ 3. 0.5-6 for graphene dispersant, 0-0.75 for concrete superplasticizer.

[0018] Wherein, the graphene is a few-layer graphene oxide powder, and the parameters of the graphene are: the purity is greater than 95wt%, the thickness range is 1.0-1.77nm, the sheet diameter range is 10-50um, and the layer number range is 1-5. The specific surface area is 360-450m2 / g.

[0019] The Portland cement in this embodiment is 42.5 ordinary Portland cement.

[0020] Referring to Table 1, the raw materials and proportions of graphene conductive concrete and the corresponding resistivity and compressive strength a...

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Abstract

Provided graphene electric-conduction concrete comprises silicate cement and sand, and is characterized in that the graphene electric-conduction concrete is formed by adding graphene as an electric conduction phase, and the compositions comprise, relative to the total mass of cement and sand, 0.05-3 parts of graphene, 0.5-6 parts of a graphene dispersant, and 0-0.75 part of a water reducer for concrete. The graphene electric-conduction concrete possesses characteristics of good electric conductivity, high mechanical strength, stable electrical resistivity and good durability, and is applicable to electric heating ground surfaces, floors, and snow and ice thawing and the like.

Description

technical field [0001] The invention relates to the field of concrete materials, in particular to a graphene conductive concrete. Background technique [0002] Adding conductive materials in ordinary concrete, such as carbon fiber, steel fiber, steel slag, graphite, etc., can greatly improve its conductivity. In related technologies, conductive concrete mainly has the following deficiencies: [0003] (1) The performance requirements of both mechanics and conductivity cannot be taken into account. For example, adding graphite to concrete can increase the conductivity of concrete, but because graphite particles are easy to slip, the strength of graphite conductive concrete is often not high. It is difficult to meet the force requirements in the project; [0004] (2) The durability of electrical conductivity. For example, adding steel fiber or steel slag to concrete can increase the electrical conductivity of concrete, but it is still difficult to avoid corrosion of steel fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/02C04B111/94
CPCC04B28/04C04B2111/94C04B14/024C04B14/06C04B2103/302C04B2103/408
Inventor 黄永辉饶瑞刘春晖刘爱荣
Owner GUANGZHOU UNIVERSITY
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