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Cement slurry thickener and preparation method and application thereof

A technology of cement slurry and thickener, applied in the field of building materials, can solve problems such as poor application effect of nanomaterials, and achieve the effects of improving thickening effect, changing rheology, and improving consistency and viscosity

Active Publication Date: 2019-04-05
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention aims to propose a cement paste thickener to solve the problem of poor application effect of existing nanomaterials in cement-based materials

Method used

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  • Cement slurry thickener and preparation method and application thereof

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Embodiment 1

[0021] The cement slurry thickener of this embodiment includes components by mass fraction: 4% graphene oxide, 3% polypropylene, 2% methylpyrrolidone, and the balance is water.

[0022] The above-mentioned cement slurry thickener is specifically prepared through the following steps:

[0023] 1) 4% graphene oxide is added to water, stirred for 30min to obtain a graphene oxide solution;

[0024] 2) The graphene oxide solution is carried out ultrasonic dispersion for the first time, then, add 3% polypropylene and 2% methylpyrrolidone, stir evenly, and carry out ultrasonic dispersion for the second time, wherein, the dispersion time of ultrasonic dispersion for the first time is 3h, the dispersion time of the second ultrasonic dispersion is 1h, and the cement slurry thickener of this embodiment is obtained.

[0025] The above-mentioned cement slurry thickener is used in cement concrete, wherein, the dosage of cement slurry thickener is 0.0001%~0.001% of the amount of cementitious...

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Abstract

The invention provides a cement slurry thickener, a preparation method and application thereof; the cement slurry thickener, according to the mass fraction, comprises 4% to 5% of graphene oxide, 1 to6% of polypropylene fluoride , 1 to 5% of methylpyrrolidone and the balance being water. The cement slurry thickener utilizes graphene oxide as the main viscosity regulator, the graphene oxide has a huge specific surface area and a large number of oxygen-containing functional groups, which can provide a large number of hydration sites, accelerate the early hydration rate of cement, and graphene oxide foil can be inserted between cement solid particles, ultra-thin two-dimensional structure and large number of oxygen-containing functional groups of the graphene oxide foil coat and even bond hydrated and unhydrated cement particles to change the rheology of the cement slurry, thereby increasing the consistency of the cement slurry, and further improving the bleeding phenomenon of cement slurry.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a cement slurry thickener and its preparation method and application. Background technique [0002] In recent years, nanomaterials have developed vigorously in the direction of nano-modification of cement-based materials. After nanomaterials are mixed with cement-based materials, their properties can be improved in many ways. Studies have shown that nanoparticles can significantly improve the microstructural compactness, strength and durability of cement-based materials. Nanoparticles commonly used to improve the performance of cement-based materials mainly include nano-SiO 2 , nano-TiO 2 , carbon nanotubes and graphene oxide, etc. [0003] Nanomaterials are usually used to improve the strength of cement-based materials, but their incorporation tends to increase water demand and increase the water-binder ratio of the system, thus limiting its performance improvement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B103/44
CPCC04B40/0039C04B2103/44C04B22/02C04B24/2611C04B24/128
Inventor 沈卫国张笛吉晓莉杜雪剑万子轩张文祥李永鑫
Owner WUHAN UNIV OF TECH
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