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Application of graphene oxide as reinforcing agent of cement early strength

An early strength and graphene technology, applied in the field of building materials, can solve the problems of reduced structural durability and low early performance of ordinary cement-based materials, and achieve the effects of improving early strength, improving durability and reducing early damage

Inactive Publication Date: 2013-04-24
DALIAN MARITIME UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to provide a method for utilizing graphene oxide to improve the early strength of cement, thereby solving the problem of reduced structural durability due to the low early performance of ordinary cement-based materials

Method used

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  • Application of graphene oxide as reinforcing agent of cement early strength
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  • Application of graphene oxide as reinforcing agent of cement early strength

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Embodiment 1

[0024] (1) Raw materials

[0025] The graphene oxide used in this embodiment has a particle diameter of 1 to 5 microns and a thickness of 0.8 to 1.2 nanometers. Its microscopic appearance under a scanning electron microscope (SEM) and a transmission electron microscope (TEM) are as follows: figure 1 with figure 2 as shown,

[0026] (2) The mixing ratio of ordinary cement specimens and graphene oxide modified cement specimens is shown in Table 1.

[0027] Table 1 Grouping of cement specimens

[0028]

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Abstract

The invention relates to an application of graphene oxide as a reinforcing agent of a cement early strength, and belongs to the field of building materials. The invention provides the application of graphene oxide as the reinforcing agent of the cement early strength. Graphene oxide is nanoscale high polymer material, and not only can fill small gaps among cement particles, so that a microstructure of the cement is dense and flat, and also graphene oxide has high surface activity, so that a hydration process of the cement can be promoted, and the mechanical property of the cement is effectively improved.

Description

technical field [0001] The invention relates to the application of graphene oxide as an early strength enhancer of cement, belonging to the field of building materials. Background technique [0002] Cement-based materials are widely used in infrastructure such as houses, bridges, and coastal dams. However, with the development of economic construction, higher requirements are placed on the performance of cement-based materials; The erosion of harmful substances will inevitably lead to the degradation of the performance of cement-based materials, resulting in initial damage to the structure, which directly affects the durability of the structure. How to improve the early performance (mechanical properties, durability) of cement-based materials is of great significance to improve the durability of concrete structures, and related research has gradually attracted the attention of civil engineering circles at home and abroad. [0003] Graphene oxide has very excellent propertie...

Claims

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Application Information

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IPC IPC(8): C04B22/06
Inventor 范颖芳张世义
Owner DALIAN MARITIME UNIVERSITY
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