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Mud retarder, preparation method thereof and concrete mixture containing mud retarder

A mud-repelling agent and mixture technology, applied in the field of concrete mixture, can solve the problems of poor improvement effect of high mud content concrete, poor performance of high mud content concrete, etc., achieve strong water reduction effect, increase Fluidity and expansion, the effect of improving work performance

Inactive Publication Date: 2018-12-07
北京建工新型建材有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the concrete admixtures in the prior art have poor improvement effect on high mud content concrete, resulting in poor performance of high mud content concrete, the first object of the present invention is to provide a mud blocking agent and a preparation method thereof. The compatibility between the agent and the polycarboxylate superplasticizer is good, it can effectively absorb sand and mud particles, improve the efficiency of the superplasticizer, and improve the fluidity and working performance of the concrete

Method used

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  • Mud retarder, preparation method thereof and concrete mixture containing mud retarder
  • Mud retarder, preparation method thereof and concrete mixture containing mud retarder

Examples

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preparation example Construction

[0033] Preparation example 1 of compound coupling agent: Add 1kg of polydimethylsiloxane, 0.2kg of phenyltriethoxysilane, 0.4kg of lauric acid diethanolamide, 2kg of propylene glycol, 0.01kg of hydrochloric acid and water into the reaction kettle 3.2kg, stir and disperse in a constant temperature environment of 30°C, the stirring speed is 2000rpm, and the stirring time is 18h, using sol-gel reaction to form a complex coupling agent containing organic-inorganic functional groups.

[0034] Preparation example 2 of compound coupling agent: Add polydimethylsiloxane 1.5kg, phenyltriethoxysilane 0.3kg, lauric acid diethanolamide 0.66kg, propylene glycol 3kg, hydrochloric acid 0.03kg and 4.2kg of water, stirring and dispersing in a constant temperature environment of 45°C, the stirring speed is 2400rpm, and the stirring time is 21h, using sol-gel reaction to form a complex coupling agent containing organic-inorganic functional groups.

[0035]Preparation example 3 of compound couplin...

Embodiment 1

[0042] (1) Add 30kg of cationic polyacrylamide, 10kg of o-aminophenethyl ether, 5kg of cyclohexyl phosphate, 15kg of sodium polyacrylate, 3kg of gellan gum and 24kg of water into the reactor and heat to 50°C, stir and mix well Make solution A and keep it warm;

[0043] (2) the water of the hydrogen peroxide of 0.73kg, the sodium sulfite of 0.23kg and the water of 6kg is made into solution B, puts into the dropping funnel for subsequent use;

[0044] (3) Add solution B prepared in step (2) dropwise to solution A in step (1), heat up to 60° C., keep warm for 1 hour, then cool down to 30° C., add sodium hydroxide solution to adjust the pH value to 6.5;

[0045] (4) Add 2kg of the compounded coupling agent provided in Preparation Example 1, 5kg of mesoporous molecular sieve and 5kg of pumice powder to the step (3) and mix evenly to obtain the mud inhibitor.

Embodiment 2

[0047] (1) Add 35kg of cationic polyacrylamide, 14kg of o-aminophenethyl ether, 6kg of cyclohexyl phosphate, 17kg of sodium polyacrylate, 3.5kg of gellan gum and 28kg of water into the reaction kettle, heat to 52°C and mix well Make solution A and keep it warm;

[0048] (2) the potassium persulfate of 1.33kg, the potassium sulfite of 0.67kg and the water of 7kg are made into solution B, and it is subsequent use to pack into dropping funnel;

[0049] (3) Add solution B prepared in step (3) dropwise to solution A in step (1), heat up to 62°C, keep warm for 1.2h, then cool down to 35°C, add potassium hydroxide solution to adjust the pH to 7 ;

[0050] (4) Add 4 kg of the compounded coupling agent provided in Preparation Example 2 of the compounded coupling agent, 5 kg of mesoporous molecular sieve and 6 kg of pumice powder to step (3) and mix evenly to obtain the mud inhibitor.

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Abstract

The invention discloses a mud retarder, a preparation method thereof and a concrete mixture containing mud retarder, relating to the field of building materials. The mud retarder contains the following components in parts by weight: 30-55 parts of cationic polyacrylamide, 10-20 parts of o-phenetidine, 5-10 parts of cyclohexanol phosphate, 15-20 parts of sodium polyacrylate, 1-5 parts of an initiator, 3-5 parts of a gellan gum, 10-15 parts of an alkaline solution, 2-6 parts of a compound coupling agent, 5-8 parts of a mesoporous molecular sieve, 5-10 parts of pumice powder and 30-50 parts of water. The mud retarder is capable of effectively ascribing dinas mud particles, so that the action efficiency of a water reducer is improved, and the fluidity and working performance of the concrete are improved.

Description

technical field [0001] The invention relates to the field of building materials, more specifically, it relates to a mud-repelling agent, a preparation method thereof and a concrete mixture containing the mud-repelling agent. Background technique [0002] Concrete, referred to as concrete, is a collective name for engineering composite materials that are aggregated into a whole by cementitious materials. It uses cement as cementitious material, sand and stone as aggregates, and can be mixed with water and admixtures in a certain proportion. It is obtained by mixing and is widely used in civil engineering. [0003] With the development of concrete technology, concrete water reducer has become one of the indispensable components in the concrete system. Polycarboxylate superplasticizer has the advantages of low dosage, high water reducing rate, good fluidity retention, good cement adaptability, and low content of harmful ingredients. It is widely used in the construction indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B28/04
CPCC04B28/04C04B40/0039C04B2201/50C04B24/2652C04B24/12C04B24/003C04B24/26C04B24/38C04B22/068C04B22/14C04B14/16C04B24/42C04B24/124C04B24/026C04B22/122C04B14/04C04B14/02C04B14/06C04B18/08C04B18/12C04B2103/302C04B2103/22C04B2103/0068
Inventor 赵文丽周帅侯凯王杰之周晓明
Owner 北京建工新型建材有限责任公司
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