Concrete synergist and preparation method thereof

A technology of concrete synergist and mixture, which is applied in the field of concrete synergist and its preparation, can solve the problems of poor environmental performance of the final product, difficulty in obtaining raw materials, environmental pollution, etc., achieve good compatibility, save cement consumption, reduce The effect of production costs

Active Publication Date: 2015-04-01
郝旭晖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although many cement synergists are currently used, which can save underutilized cement and at the same time ensure the basic performance and strength of concrete, most of the existing concrete synergists use polyether macromonomers as raw materials , the access to raw materials is difficult, the environmental protection performance of the preparation process and the final product is poor, and it is easy to cause environmental pollution, which runs counter to the construction of a resource-saving and environment-friendly society

Method used

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  • Concrete synergist and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The content of each component required for the reaction is shown in Table 1, wherein the inorganic base is sodium hydroxide, the sulfonating agent is sodium sulfite, the lignosulfonate is sodium lignosulfonate, and the unsaturated organic amine is diallyl base amine, the initiator is sodium persulfate.

[0031] (1) After adding acrylic fiber, sodium hydroxide and water into the reaction kettle, start stirring, and start to heat up, and react for 2 hours after the temperature reaches 78°C;

[0032] (2) Add formaldehyde and sodium sulfite to the reaction kettle, and keep the temperature at 85°C, and continue to react for 3 hours;

[0033] (3) Add sodium lignosulfonate and diallylamine in the reactor, start dripping the sodium persulfate solution that mass percentage concentration is 4% after adding, this sodium persulfate solution is made of described sodium persulfate and It is prepared with water; the dropping time is controlled at 1 hour, and the temperature is contro...

Embodiment 2

[0035] The content of each component required for the reaction is as shown in Table 1, wherein the acrylic fiber is the waste produced in the production or processing of the acrylic fiber, the inorganic base is potassium hydroxide, and the sulfonating agent is sodium bisulfite, lignosulfonate It is potassium lignosulfonate, the unsaturated organic amine is allylamine, and the initiator is potassium persulfate.

[0036] (1) After adding acrylic fiber, potassium hydroxide and water into the reaction kettle, start stirring, and start to heat up, and react for 5 hours after the temperature reaches 75°C;

[0037] (2) Add formaldehyde and sodium bisulfite to the reaction kettle, and keep the temperature at 90°C, and continue to react for 2 hours;

[0038] (3) add lignosulfonate potassium and allylamine in reactor, start to drop mass percent after adding and be the potassium persulfate solution that concentration is 6%, this potassium persulfate solution is made of described potassiu...

Embodiment 3

[0040] The content of each component required for the reaction is as shown in Table 1, wherein the acrylic fiber is or is the waste produced by other application manufacturers using acrylic fiber as the main raw material, the inorganic base is sodium hydroxide, and the sulfonating agent is sodium sulfite. The lignosulfonate is ammonium lignosulfonate, the unsaturated organic amine is triallylamine, and the initiator is ammonium persulfate.

[0041] (1) After adding acrylic fiber, sodium hydroxide and water into the reaction kettle, start stirring, and start to heat up, and react for 3 hours after the temperature reaches 80°C;

[0042] (2) Add formaldehyde and sodium sulfite to the reaction kettle, and keep the temperature at 100°C, and continue the reaction for 1 hour;

[0043] (3) Add ammonium lignosulfonate and triallylamine in the reactor, start to add dropwise mass percentage after adding and be the ammonium persulfate solution that concentration is 8%, this ammonium persu...

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Abstract

The invention discloses a concrete synergist and a preparation method thereof. The acrylic fibers in the textile industry are used as the main raw material for preparing the concrete synergist; the concrete synergist prepared by the method is able to improve the strength grade of concrete, about 10% cement of the concrete can be saved, and meanwhile, the working performance and strength of the concrete can be ensured, and the production cost is decreased; the acrylic fibers serving as the main material for preparing the concrete synergist can be waste acrylic fibers obtained from acrylic fibers production and processing or other plants using acrylic fibers as the main raw materials. The method for preparing the concrete synergist has the advantages that the waste acrylic fibers are effectively utilized, so that the environmental burden caused by the waste acrylic fibers can be decreased, and a good application prospect is brought; the concrete synergist aims at improving concrete performances.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, in particular to a concrete synergist and a preparation method thereof. Background technique [0002] Concrete has always been a bulk man-made material widely used in construction engineering. So far, there has been no foreseeable application of materials that can replace concrete. Ready-mixed concrete is the main form of concrete production so far, and more than 70% of the ready-mixed concrete has a strength grade of C25-C35. The improvement of the performance of concrete of this strength grade and the progress of construction technology have extensive and profound implications for the development of the entire concrete industry. profound influence. Concrete admixtures based on water reducers have become an important component of concrete, which has the characteristics of reducing cement consumption and improving the workability of fresh concrete. Research data on cement hydration ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/18C04B24/12C04B16/06
Inventor 刘剑锋郑福尔陈珍喜刘明华茅勰苏千德
Owner 郝旭晖
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