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Concrete nano water-reducing super high-early-strength agent

An early strength agent and concrete technology, applied in the field of concrete admixtures, can solve the problems of limited improvement of concrete strength and lack of plastic retention performance, and achieve the effects of reducing bleeding and segregation, controlling slump loss and prolonging service life.

Active Publication Date: 2012-06-13
DALIAN KEYKOWN TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese Patent Publication No. CN101941813A discloses a concrete early-strength water-reducer, which is formulated from Glauber's salt, wood calcium and coal ash. Although it also has early-strength and water-reducing functions, it also has disadvantages Concrete of all ages has limited strength improvement and lack of plastic retention

Method used

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  • Concrete nano water-reducing super high-early-strength agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The raw materials and mass percentages used are 52% of early strength component, 32% of water reducing component, 6% of antirust component, 4% of retarding component and 6% of regulating component. Weigh the above-mentioned components according to the mass percentage, mix the above-mentioned components, and stir evenly; put them into packaging bags and seal them, and place them in a dry place.

[0025] The early strength components are magnesium sulfate, sodium sulfate and sodium nitrite;

[0026] The water-reducing component is a high-efficiency water-reducing agent based on naphthalenesulfonic acid;

[0027] The antirust component is calcium nitrite;

[0028] The retarding component is sodium gluconate;

[0029] The regulating component is nanometer ground calcium carbonate.

Embodiment 2

[0031] The raw materials and mass percentages used are 50% of the early strength component, 30% of the water reducing component, 9% of the antirust component, 4% of the retarding component and 7% of the adjusting component. The manufacturing method is the same as that of Example 1.

[0032] The early strength components are triethanolamine, sodium thiosulfate, triisopropanolamine and calcium formate;

[0033] The water-reducing component is a carboxylic acid-based water-reducing agent;

[0034] The antirust component is calcium nitrate;

[0035] The retarding component is citric acid;

[0036] The regulating component is nanometer ground calcium carbonate.

Embodiment 3

[0038] The raw materials and mass percentages used are 48% of the early strength component, 28% of the water reducing component, 11% of the antirust component, 5% of the retarding component and 8% of the adjusting component, and the manufacturing method is the same as that of Example 1.

[0039] The early strength components are magnesium sulfate, sodium sulfate, triethanolamine and sodium thiosulfate;

[0040] The water-reducing component is a high-efficiency water-reducing agent based on naphthalenesulfonic acid;

[0041] The antirust component is potassium chromate;

[0042] The retarding component is sodium gluconate;

[0043] The regulating component is nanometer ground calcium carbonate.

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Abstract

The invention discloses a concrete nano water-reducing super high-early-strength agent which is capable of remarkably increasing early and late strength of concrete and shortening construction period and simultaneously has good water-reducing performance, plastic retaining performance, corrosion inhibiting performance and stability. The agent comprises the following ingredients: 46-52 wt% of early strength components, 26-32 wt% of water reducing components, 6-15 wt% of corrosion inhibiting components, 4-5 wt% of retarding components, and 6-8 wt% of adjustment components, wherein the early strength components comprise three or four selected from magnesium sulfate, sodium sulfate, sodium nitrite, triethanolamine, sodium thiosulfate, triisopropanolamine, and calcium formate, the water reducing components comprise one selected from naphthalene sulfonic acid high-efficiency water reducer and carboxylic acid water reducer, the corrosion inhibiting components comprise one selected from calcium nitrite, calcium nitrate, potassium chromate, and stannous chloride, the retarding components comprise one selected from sodium gluconate and citric acid, and the adjustment components comprise nano ground calcium carbonate.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a concrete nano water-reducing superstructure which can significantly improve the early and late strength of concrete, shorten the construction period, and at the same time have good water-reducing, plastic-retaining, rust-resistance and stability properties. Early strengthening agent. Background technique [0002] At present, in order to improve the performance of concrete and meet the needs of concrete construction, various concrete admixtures have emerged as the times require, such as early strength agents, water reducing agents, retarders, pumping agents and antifreeze agents. The main function of the early strength agent is to accelerate the hydration speed of cement, improve the early strength of concrete and have no significant effect on the later strength, shorten the time of form removal, improve the turnover rate of formwork and implement prestress tension as early as possible, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/20C04B24/26
Inventor 贾金青孟刚刘春梅王海涛
Owner DALIAN KEYKOWN TECH CO LTD
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