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Reinforced concrete inner curing superabsorbent microsphere material and preparation method

A technology of high water absorption in concrete, applied in the field of building materials, can solve the problems of concrete strength decline, achieve the effect of reducing porosity, improving transition zone, and promoting early hydration

Active Publication Date: 2020-06-09
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a reinforced concrete internal maintenance super absorbent microsphere material and its preparation method, which solves the problem that the existing absorbent materials cause a decline in concrete strength on the basis of ensuring water absorption performance. technical issues

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  • Reinforced concrete inner curing superabsorbent microsphere material and preparation method

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Effect test

Embodiment 1

[0041] The present embodiment provides a kind of enhanced concrete internal maintenance superabsorbent microsphere material, and in parts by weight, comprises the following raw material to make: 8% nano silicon dioxide, 20% chitosan, 30% pentadiene Aldehyde, 5% gum arabic, 25% methacrylic acid, 3.3% glacial acetic acid, 0.5% cumene hydroperoxide, 0.2% ferrous chloride, 8% sodium ethoxide.

[0042] The preparation method of the reinforced concrete internal maintenance superabsorbent microsphere material of the present embodiment, the method specifically includes the following steps:

[0043]Step 1, taking each raw material by formula weight;

[0044] Step 2, dispersing the nano-silica in water, configuring it into a nano-silica suspension with a mass concentration of 3%, and stirring;

[0045] In step 2, the stirring adopts magnetic stirring, and the stirring time is 20 min.

[0046] Step 3, diluting the glacial acetic acid with water into a dilute glacial acetic acid solutio...

Embodiment 2

[0061] The present embodiment provides a kind of reinforced concrete internal maintenance superabsorbent microsphere material, in parts by weight, comprising the following raw materials: 9% nano silicon dioxide, 18% chitosan, 25% pentadiene Aldehyde, 4.4% gum arabic, 30% methacrylic acid, 5% glacial acetic acid, 0.4% cumene hydroperoxide, 0.2% ferrous chloride, 8% sodium ethoxide.

[0062] The preparation method of the reinforced concrete inner-cured superabsorbent microsphere material in this embodiment is the same as the preparation method of the reinforced concrete inner-cured superabsorbent microsphere material in Example 1.

[0063] The SEM image of the reinforced concrete internal maintenance superabsorbent microsphere material obtained in this embodiment is as follows figure 1 shown. When in use, directly add the superabsorbent microspheres in the reinforced concrete together with cement to the mixing equipment for mixing, the dosage is 1.8% of the cement dosage, and t...

Embodiment 3

[0065] The present embodiment provides a kind of reinforced concrete internal maintenance superabsorbent microsphere material, and in parts by weight, comprises the following raw materials to make: 10% nano silicon dioxide, 19% chitosan, 28% pentadiene Aldehyde, 4% gum arabic, 27% methacrylic acid, 3.3% glacial acetic acid, 0.5% cumene hydroperoxide, 0.2% ferrous chloride, 8% sodium ethoxide.

[0066] The preparation method of the reinforced concrete inner-cured superabsorbent microsphere material in this embodiment is the same as the preparation method of the reinforced concrete inner-cured superabsorbent microsphere material in Example 1.

[0067] The SEM image of the reinforced concrete internal maintenance superabsorbent microsphere material obtained in this embodiment is as follows figure 1 shown. When in use, directly add the superabsorbent microspheres in the reinforced concrete together with cement to the mixing equipment for mixing, the dosage is 0.25% of the cement ...

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Abstract

Disclosed are a reinforced concrete internal curing high-water-absorption microsphere material and a preparation method therefor. The microsphere material is prepared from the following raw materials: nano silica, chitosan, glutaraldehyde, arabic gum, methacrylic acid, glacial acetic acid, isopropyl benzene hydroperoxide, ferrous chloride and sodium ethoxide. Same modifies the microstructure inside a cement-based material by improving a transition region between a cement paste and an aggregate, whereby the porosity is reduced and the mechanical properties are improved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a concrete internal maintenance material, in particular to a reinforced concrete internal maintenance superabsorbent microsphere material and a preparation method thereof. Background technique [0002] With its excellent mechanical properties, high durability and other advantages, as well as significant economic, social and environmental benefits, concrete is widely used in cross-sea bridges, high-speed railways, high-rise buildings and other projects. However, with the rapid development of my country's economy, new architectural styles put forward higher requirements for concrete. Today's buildings emphasize higher, larger, and longer life spans, which requires concrete to have better durability and greater load-bearing capacity. Compared with ordinary concrete, high-performance concrete has many performance indicators higher than ordinary concrete, but usually high-performanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B14/06C04B24/26
CPCC04B14/062C04B24/2641C04B40/0046C04B24/38C04B24/008C04B24/04C04B24/00C04B24/02C04B22/12
Inventor 何锐谈亚文房建宏陈华鑫薛成薛兆峰段德峰
Owner CHANGAN UNIV
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