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High-strength environmental-friendly high-efficiency water reducing admixture and preparation method thereof

A technology of water reducing agent and naphthalene series water reducing agent, which is applied in the preparation of high-strength environmental protection and high-efficiency water-reducing agent, and the field of high-strength environmental protection and high-efficiency water-reducing agent, can solve the problems of high dosage, reduce the growth rate of early strength of concrete, etc. The degree of hydration, superior economy and environmental protection, the effect of reducing the amount of cement

Inactive Publication Date: 2013-07-17
湖北恒利建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But, on the other hand, when fly ash is used in concrete for the purpose of replacing cement, an obvious disadvantage is that it will reduce the early strength growth rate of concrete, especially when the content is high

Method used

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  • High-strength environmental-friendly high-efficiency water reducing admixture and preparation method thereof
  • High-strength environmental-friendly high-efficiency water reducing admixture and preparation method thereof
  • High-strength environmental-friendly high-efficiency water reducing admixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 536 grams of industrial naphthalene (purity is 95%, the same below) is completely melted, and sulfonation reaction is carried out with 574 grams of 98% concentrated sulfuric acid, the temperature is controlled at 160 degrees, the heat preservation reaction is 2 hours, then cooled to 110 degrees, and 222 grams of water are added And stir for hydrolysis, control the acidity value after hydrolysis at about 25.0%, then add 314 grams of 37% formaldehyde dropwise for condensation reaction, control the temperature at 115 degrees and condense for 4.5 hours at an air pressure of 0.05-0.25 MPa, cool down, and then add 960 grams of 30 % concentration of sodium hydroxide for neutralization reaction, adjust the pH value between 8 and 9, and finally add 240 grams of concrete strengthening component sodium fluorosilicate, 45 grams of retarding component sodium gluconate, and 8 grams of rosin soap air-entraining agent , and water (quantity to control the total solid content at about 35%...

Embodiment 2

[0047] Completely melt 536 grams of naphthalene, carry out sulfonation reaction with 595 grams of concentrated sulfuric acid, control the temperature at 165 degrees, heat preservation reaction for 3 hours, then cool down to 110 degrees, add 222 grams of water and stir for hydrolysis, control the acidity value after hydrolysis at 27.5 %, then add 310 grams of formaldehyde dropwise for condensation reaction, control the temperature at 105 degrees and condense for 4.5 hours at an air pressure of 0.05 to 0.25 MPa, cool down, then add 980 grams of 30% sodium hydroxide for neutralization reaction, and adjust the pH value Between 7 and 8, finally add 320 grams of concrete reinforcement component triethanolamine, 25 grams of retarding component sodium citrate, 5 grams of rosin soap air-entraining agent, and water (quantity to control the total solid content at about 35%) , that is, the required high-strength, environment-friendly and high-efficiency water reducer.

[0048] Embodiment ...

Embodiment 3

[0054] 536 grams of industrial naphthalene (purity is 95%, the same below) is completely melted, and sulfonation reaction is carried out with 585 grams of 98% concentrated sulfuric acid, the temperature is controlled at 165 degrees, and the heat preservation reaction is carried out for 2 hours, then cooled to 110 degrees, and 222 grams of water are added And stir for hydrolysis, control the acidity value after hydrolysis at about 26.0%, then add 314 grams of 37% formaldehyde dropwise for condensation reaction, control the temperature at 100 degrees and condense for 4.5 hours at an air pressure of 0.05-0.25 MPa, cool down, and then add 970 grams of 30 % concentration of sodium hydroxide for neutralization reaction, adjust the pH value between 8 and 9, and finally add 190 grams of concrete strengthening component sodium fluorosilicate, 45 grams of retarding component sodium gluconate, and rosin soap air-entraining agent 8 grams , and triisopropanolamine by 6 grams, 50 grams of fe...

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Abstract

The invention provides a high-strength environmental-friendly high-efficiency water reducing admixture and a preparation method thereof. The high-strength environmental-friendly high-efficiency water reducing admixture mainly comprises naphthalene-series water reducing admixture mother liquor which is compounded of multiple components such as a delayed-coagulation component, an air-entraining component, a concrete reinforcing component and an active exciting component. The high-strength environmental-friendly high-efficiency water reducing admixture disclosed by the invention can show excellent suitability to different concrete construction materials and is mainly characterized in that the effective adsorption capacity to cement grains is reinforced, the dispersity of the cement grains can be further improved and the water reducing rate is ultrahigh; and above all, the regular effects of 20-30% of cement playing a filling function in concrete can be fully excited, the cement content in concrete unit is greatly reduced, and the economy and the environmental friendliness are excellent.

Description

technical field [0001] The invention relates to a concrete admixture, specifically a high-strength, environment-friendly and high-efficiency water reducer, and a preparation method of the high-strength, environment-friendly and high-efficiency water reducer. Background technique [0002] Concrete material has been used more and more widely in building construction. Its development and application have promoted the development of building material technology, and it has become an indispensable key material in construction engineering. Modern concrete is characterized by the widespread use of admixtures, and the wide application of admixtures is an important symbol of modern concrete engineering. [0003] Concrete is a very complex system, and even different properties are contradictory. Admixtures affect the quality of concrete by changing the mixture. For admixtures, the formula and process of the product itself are very important. It is the concrete that is used The key to...

Claims

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Application Information

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IPC IPC(8): C04B24/22C04B103/30
Inventor 魏运权张剑峰周小波胡从文魏运超
Owner 湖北恒利建材科技有限公司
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