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C-S-H gel nanocrystal nucleus early strength agent, preparation method and application thereof

A C-S-H, nano-crystal technology, applied in the field of concrete admixtures, can solve problems such as poor gel stability, and achieve the effects of accelerated nucleation and growth, high activity, and good compatibility

Active Publication Date: 2019-10-15
WUHAN UNIV OF TECH
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Problems solved by technology

[0003] In view of this, the present invention aims to propose a kind of C-S-H gel nano crystal nucleus early strength agent, to solve the problem of poor gel stability of existing nanometer C-S-H gel crystal nucleus early strength agent

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  • C-S-H gel nanocrystal nucleus early strength agent, preparation method and application thereof
  • C-S-H gel nanocrystal nucleus early strength agent, preparation method and application thereof

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[0019] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0020] The C-S-H gel nano crystal nucleus early strength agent of the present invention, by weight, the C-S-H gel nano crystal nucleus early strength agent is mainly prepared from the following components through a wet grinding process: tricalcium silicate: 10-20 parts, Ion accelerator: 0.5-1 part, surface modifier: 0.1-0.3 part, dispersion stabilizer: 0.1-0.5 part, water: 78.5-89.2 part. Wherein, tricalcium silicate is a powder, and its median particle size is less than 100 microns; the ion solubilizing agent is a mixture of sodium carbonate and triisopropanolamine, and its mass ratio is 1:(5-10); the surface modifier is poly Sodium acrylate has a molecular weight of 3000-10000; the dispersion stabilizer is a slump-retaining polycarboxylate superplasticizer with a solid content of 35% to 45%, preferably 40%...

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Abstract

The invention provides a C-S-H gel nanocrystal nucleus early strength agent, a preparation method and application thereof. The C-S-H gel nanocrystal nucleus early strength agent is mainly prepared from the following components by weight through wet milling process: 10-20 parts of tricalcium silicate, 0.5-1 part of an ion promoter, 0.1-0.3 part of a surface modifier, 0.1-0.5 part of a dispersion stabilizer, and 78.5-89.2 parts of water. The C-S-H gel nanocrystal nucleus early strength agent provided by the invention utilizes the crystal nucleus induction effect of nano form C-S-H gel to accelerate the nucleation growth of hydration products at the early stage of hydration, and can achieve the early strength purpose from the two aspects of by improving the pore structure and inducing nucleation.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a C-S-H gel nano crystal nucleus early strength agent and its preparation method and application. Background technique [0002] Crystal nucleus early strength agent is a new type of early strength agent for cement concrete. Its early strength mechanism is based on the crystal nucleus effect, that is, specific nano-sized additives are mixed into cement and concrete, which can be used in the cement hydration process. Orientation induces the migration of various mineral ions, and provides nucleation centers for the growth of various hydration products or crystals, thereby accelerating the growth rate of hydration products and improving the degree of cement hydration. The preparation method of nano C-S-H gel crystal nucleus early strength agent is generally hydrothermal synthesis, the preparation process is cumbersome, the process conditions are strict, the process parame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B103/12C04B22/08
CPCC04B40/0039C04B2103/12C04B22/00C04B22/10C04B24/122C04B24/2641C04B2103/302
Inventor 谭洪波邓秀峰张迅聂康峻李懋高贺行洋苏英
Owner WUHAN UNIV OF TECH
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