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A kind of anti-seepage and anti-cracking agent for concrete and preparation method thereof

An anti-cracking agent and concrete technology, which is applied in the field of concrete anti-seepage and anti-cracking agent and its preparation, can solve the problems of poor anti-cracking effect, limited shrinkage compensation ability, low activity index, etc., to improve water retention and water reduction, improve Shrinkage performance, various effects of functions

Active Publication Date: 2021-05-14
四川中铁二院环保科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The activity index of the aluminum material and sulfur material in this anti-cracking agent is low, the ability to compensate for shrinkage is limited, and the anti-cracking effect is poor

Method used

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  • A kind of anti-seepage and anti-cracking agent for concrete and preparation method thereof
  • A kind of anti-seepage and anti-cracking agent for concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A concrete anti-seepage and anti-cracking agent, consisting of the following components in parts by weight: 10 parts of polyquaternium-10 hydroxyethyl amino copolymer, 10 parts of expansive soil, 20 parts of calcium magnesium mineral powder, 5 parts of furfural slag powder 1 part, 3 parts of polyurethane fiber, 10 parts of diatomaceous earth, 1 part of trimethoxysilylpropyl polyethylene glycol modified single-end epoxy silicone oil.

[0027] The preparation method of described polyquaternium-10 hydroxyethyl amino copolymer, comprises the steps:

[0028] Preparation of Ⅰ copolymer: (2R,3R,4S,5R)-2-(6-amino-8-vinylpurin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol 10g, 2-acrylamido-2-methylpropanesulfonic acid 10g, (Z)-3-(bis(2-hydroxyethyl)amino)-2-(2-hydroxyethyl-(hydroxymethyl)amino ) 20g of prop-2-en-1-ol and 0.2g of sodium persulfate were added to 120g of dimethyl sulfoxide, stirred and reacted for 4 hours under a nitrogen atmosphere at 70°C, then precipitated in...

Embodiment 2

[0033]A concrete anti-seepage and anti-cracking agent, consisting of the following components in parts by weight: 12 parts of polyquaternium-10 hydroxyethyl amino copolymer, 12 parts of expansive soil, 22 parts of calcium magnesium mineral powder, 6 parts of furfural slag powder 2 parts, 4 parts of polyurethane fiber, 12 parts of diatomaceous earth, 2 parts of trimethoxysilylpropyl polyethylene glycol modified single-end epoxy silicone oil.

[0034] The preparation method of described polyquaternium-10 hydroxyethyl amino copolymer, comprises the steps:

[0035] Preparation of Ⅰ copolymer: (2R,3R,4S,5R)-2-(6-amino-8-vinylpurin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol 10g, 2-acrylamido-2-methylpropanesulfonic acid 10g, (Z)-3-(bis(2-hydroxyethyl)amino)-2-(2-hydroxyethyl-(hydroxymethyl)amino ) 20g of prop-2-en-1-ol and 0.25g of azobisisobutyronitrile were added to 130g of N,N-dimethylformamide, stirred and reacted for 4.5 hours under a helium atmosphere at 73°C, and then d...

Embodiment 3

[0040] A concrete anti-seepage and anti-cracking agent, which consists of the following components in parts by weight: 15 parts of polyquaternium-10 hydroxyethyl amino copolymer, 13 parts of expansive soil, 25 parts of calcium magnesium mineral powder, and 7 parts of furfural slag powder 6 parts, 6 parts of polyurethane fiber, 13 parts of diatomaceous earth, 3 parts of trimethoxysilylpropyl polyethylene glycol modified single-end epoxy silicone oil.

[0041] The preparation method of described polyquaternium-10 hydroxyethyl amino copolymer, comprises the steps:

[0042] Preparation of Ⅰ copolymer: (2R,3R,4S,5R)-2-(6-amino-8-vinylpurin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol 10g, 2-acrylamido-2-methylpropanesulfonic acid 10g, (Z)-3-(bis(2-hydroxyethyl)amino)-2-(2-hydroxyethyl-(hydroxymethyl)amino ) 20 g of prop-2-en-1-ol and 0.3 g of azobisisoheptanonitrile were added to 135 g of N-methylpyrrolidone, stirred and reacted for 5 hours in a neon atmosphere at 75° C., and t...

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Abstract

The invention discloses a concrete anti-seepage and anti-cracking agent, which is characterized in that, in parts by weight, it consists of the following components: 10-20 parts of polyquaternium-10 hydroxyethyl amino copolymer, 10-15 parts of expansive soil 20-30 parts of calcium magnesium mineral powder, 5-10 parts of furfural slag powder, 3-8 parts of polyurethane fiber, 10-15 parts of diatomaceous earth, trimethoxysilylpropyl polyethylene glycol modified single-ended epoxy 1-5 parts of silicone oil. The invention also discloses a preparation method of the concrete anti-cracking agent. The concrete anti-cracking agent disclosed by the invention can produce a more significant anti-cracking effect under the condition of low dosage, thereby greatly reducing the cost of concrete, and has various functions, which can effectively improve the durability, strength, volume stability and Other comprehensive performance, use safety and environmental protection.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures for building materials, in particular to a concrete anti-seepage and anti-cracking agent and a preparation method thereof. Background technique [0002] With the strengthening of my country's infrastructure construction, construction projects are increasing day by day, and the use of mass concrete is becoming more and more extensive, but the problem of concrete cracking is becoming more and more prominent, which seriously affects the structural strength, durability and volume stability of concrete. It is of great significance to effectively prevent or reduce concrete cracking due to the defects of concrete structure. [0003] From the material point of view, concrete expansion agent, shrinkage reducer, steel fiber and synthetic organic fiber are all effective measures to reduce or disperse cracks. However, these concrete additives often have a single function, and the prepared concrete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C04B24/16C08G77/46C08G81/02C04B103/60C04B103/65
Inventor 曹冰朱小红
Owner 四川中铁二院环保科技有限公司
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