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Concrete retarder with good uniform mixing plasticity

A concrete and retarder technology, applied in the field of building materials, can solve the problems of unsatisfactory concrete strength and air pollution, and achieve the effects of inhibiting the hydration process of cement, saving labor and prolonging the setting time

Inactive Publication Date: 2020-07-31
石旭艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it can obtain a strong retarding effect, it is still unsatisfactory in terms of concrete application, especially in terms of concrete strength.
In addition, the use of nitrate is prone to produce NO 2 Pollutants such as air pollution

Method used

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  • Concrete retarder with good uniform mixing plasticity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A well-mixed concrete retarder with good plasticity is characterized in that it is made of the following components by weight: 5 parts of hyperbranched borate ester, 10 parts of porous polysaccharide microspheres, 3 parts of zinc borosilicate, ethylene Potassium trifluoroborate / phosphoenolpyruvate / polyethylene glycol monoallyl ether / 2-acrylamido-2-methylpropanesulfonic acid copolymer 3 parts, attapulgite 10 parts, water 40 parts, alkanes 1 part of phenol polyoxyethylene ether, 3 parts of ethanol, and 3 parts of sulfobutyl-β-cyclodextrin; the particle size of the attapulgite is 50 mesh.

[0029] The preparation method of the ethylene potassium trifluoroborate / phosphoenolpyruvate / polyethylene glycol monoallyl ether / 2-acrylamido-2-methylpropanesulfonic acid copolymer comprises the following steps: Potassium fluoroborate, phosphoenolpyruvate, polyethylene glycol monoallyl ether, 2-acrylamido-2-methylpropanesulfonic acid, and azobisisobutylamidine hydrochloride were added to...

Embodiment 2

[0033] A well-mixed concrete retarder with good plasticity is characterized in that it is made of the following components by weight: 6 parts of hyperbranched borate ester, 12 parts of porous polysaccharide microspheres, 3.5 parts of zinc borosilicate, ethylene Potassium trifluoroborate / phosphoenolpyruvate / polyethylene glycol monoallyl ether / 2-acrylamido-2-methylpropanesulfonic acid copolymer 4 parts, attapulgite 12 parts, water 45 parts, fat 1.5 parts of alcohol polyoxyethylene ether, 3.5 parts of isopropanol, and 3.5 parts of sulfobutyl-β-cyclodextrin; the particle size of the attapulgite is 70 mesh.

[0034] The preparation method of the ethylene potassium trifluoroborate / phosphoenolpyruvate / polyethylene glycol monoallyl ether / 2-acrylamido-2-methylpropanesulfonic acid copolymer comprises the following steps: Potassium fluoroborate, phosphoenolpyruvate, polyethylene glycol monoallyl ether, 2-acrylamido-2-methylpropanesulfonic acid, and azobisisobutylimidazoline hydrochloride...

Embodiment 3

[0038] A well-mixed concrete retarder with good plasticity retention is characterized in that it is made of the following components by weight: 6.5 parts of hyperbranched borate ester, 15 parts of porous polysaccharide microspheres, 4 parts of zinc borosilicate, ethylene Potassium trifluoroborate / phosphoenolpyruvate / polyethylene glycol monoallyl ether / 2-acrylamido-2-methylpropanesulfonic acid copolymer 4.5 parts, attapulgite 13 parts, water 50 parts, alkanes 2 parts of phenol polyoxyethylene ether, 4 parts of glycerin, and 4 parts of sulfobutyl-β-cyclodextrin; the particle size of the attapulgite is 100 mesh.

[0039] The preparation method of the ethylene potassium trifluoroborate / phosphoenolpyruvate / polyethylene glycol monoallyl ether / 2-acrylamido-2-methylpropanesulfonic acid copolymer comprises the following steps: Potassium fluoroborate, phosphoenolpyruvate, polyethylene glycol monoallyl ether, 2-acrylamido-2-methylpropanesulfonic acid, and azobiscyanovaleric acid are adde...

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Abstract

The invention discloses a concrete retarder with good uniform mixing plasticity. The concrete retarder is characterized in being prepared from the following components in parts by weight: 5-8 parts ofhyperbranched borate, 10-20 parts of porous polysaccharide microspheres, 3-5 parts of zinc borosilicate, 3-6 parts of an ethylene potassium trifluoroborate / phosphoenolpyruvic acid / polyethylene glycolmonoallyl ether / 2-acrylamido-2-methylpropanesulfonic acid copolymer, 10-15 parts of attapulgite, 40-60 parts of water, 1-3 parts of an emulsifier and 3-5 parts of a cosolvent. The invention also discloses a preparation method of the concrete retarder. The concrete retarder disclosed by the invention is remarkable in retarding effect, capable of effectively improving the strength of concrete and reducing the slump loss of a concrete mixture, good in compatibility with an additive, small in mixing amount, low in cost, safe to use and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a well-mixed concrete retarder with good plasticity and a preparation method thereof. Background technique [0002] With the development of society and the needs of various large-scale projects, the application range of concrete is continuously expanding, and the performance requirements of concrete are also getting higher and higher. The performance of concrete is affected and acted by various admixtures, so as to meet the needs of construction requirements under different working conditions. Before concrete is poured, it needs to go through multiple links such as mixing, stirring, and transportation. Therefore, it is often necessary to add admixtures to prolong the setting time of cement so that it can maintain a certain degree of plasticity for a long period of time. The admixture with this function is the concrete retarder, and the concrete retarder plays a very i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B24/16C08F283/06C08F230/06C08F230/02C08F220/58C04B103/22C04B103/30
CPCC04B24/165C04B40/0039C04B2103/22C04B2103/30C04B2103/302C08F283/065C04B22/0013C04B24/38C04B24/28C04B22/00C04B24/32C04B24/02C04B24/168C08F230/06C08F230/02
Inventor 石旭艳
Owner 石旭艳
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