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Concrete water-retaining agent and preparation method thereof

A technology of water-retaining agent and concrete, applied in the field of water-retaining agent, can solve the problems of poor dispersion of cement particles, poor cohesion and cohesive force of cement cementitious materials, and three wastes, so as to increase cohesion and cohesive force, improve Dispersion and the effect of improving the utilization rate

Inactive Publication Date: 2021-10-01
深圳市三绿科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, most water retaining agents have a long reaction time, cumbersome process, easy to produce three wastes, and pollute the environment. In order to achieve the ideal concrete state, they need to be mixed with other admixtures. The operation is not easy enough, and the utilization rate of cement and adhesive materials is low. The dispersion of particles is poor, and the cohesion and cohesion of cementitious materials are poor

Method used

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  • Concrete water-retaining agent and preparation method thereof
  • Concrete water-retaining agent and preparation method thereof
  • Concrete water-retaining agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First weigh 929g of deionized water in a 2500ml beaker, then add 2g of pullulan, 2g of hydroxypropyl methylcellulose, and 4g of sodium hydroxide, first stir until completely dissolved, and then add diethyl Isopropanolamine 8g, triethanolamine 8g, molasses 2g, COPS-1 1g, sodium metabisulfite 6g, ethylene glycol 8g, mud-resistant polycarboxylate superplasticizer 5g, sodium thiocyanate 8g, isopentenol polyoxygen Vinyl ether 8g, cyclodextrin 1g, melamine 1g, maltodextrin 1g, glycerin 3g, polyacrylamide 2g, fully stir and dissolve for the second time, then add 0.5g of defoamer and 0.5g of preservative, and then add 0.5g of antifoaming agent and 0.5g of preservative Stir evenly to prepare the concrete water retaining agent.

Embodiment 2

[0026] First weigh 888.5g of deionized water in a 2500ml beaker, then add 10g of pullulan, 10g of hydroxypropyl methylcellulose, and 10g of sodium hydroxide, stir until completely dissolved, and then add diethyliso Propanolamine 14g, triethanolamine 14g, molasses 5g, COPS-1 3g, sodium metabisulfite 4g, ethylene glycol 10g, mud-resistant polycarboxylate superplasticizer 8g, sodium thiocyanate 2g, isopentenol polyoxyethylene 5g of ether, 4g of cyclodextrin, 1g of melamine, 1g of maltodextrin, 5g of glycerin, and 5g of polyacrylamide were stirred and dissolved thoroughly, then 0.2g of defoamer and 0.3g of preservative were added, and the concrete was prepared by stirring evenly Aquasorb.

Embodiment 3

[0028] First weigh 911.3g of deionized water in a 2500ml beaker, then add 5g of pullulan, 5g of hydroxypropyl methylcellulose, and 10g of sodium hydroxide, stir until completely dissolved, and then add diethyliso Propanolamine 12g, triethanolamine 12g, molasses 3g, COPS-1 1g, sodium metabisulfite 7g, ethylene glycol 6g, mud-resistant polycarboxylate superplasticizer 12g, sodium thiocyanate 1g, isopentenol polyoxyethylene 6g of ether, 1g of cyclodextrin, 2g of melamine, 1g of maltodextrin, 3g of glycerin, and 1g of polyacrylamide were stirred thoroughly to dissolve, then 0.2g of defoamer and 0.5g of preservative were added, and stirred evenly to obtain concrete Aquasorb.

[0029] For the above three implementation cases of the present invention, water retention verification and state strength verification were carried out. In the examples, the water reducing agent is compounded from polycarboxylic acid mother liquor, in which PCB is a water-reducing 45% solid mother liquor, and...

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Abstract

The invention discloses a concrete water-retaining agent and a preparation method thereof. The concrete water-retaining agent is prepared from the following raw materials in parts by weight: 2 to 10 parts of hydroxypropyl methyl cellulose, 1 to 10 parts of sodium hydroxide, 8 to 15 parts of diethylisopropanolamine, 8 to 15 parts of triethanolamine, 2 to 10 parts of amylopectin, 1 to 5 parts of molasses, 1 to 5 parts of COPS-1, 5 to 10 parts of sodium pyrosulfite, 5 to 15 parts of ethylene glycol, 5 to 15 parts of mud-resistant polycarboxylate superplasticizer, 1 to 10 parts of sodium thiocyanate, 5 to 10 parts of isopentenol polyoxyethylene ether, 1 to 5 parts of cyclodextrine, 1 to 5 parts of melamine, 1-5 parts of maltodextrin, 3-10 parts of glycerol, 1-5 parts of polyacrylamide, 0.1-2 parts of a de-foaming agent, 0.1-2 parts of a preservative and 836-950 parts of de-ionized water. The water-retaining agent provided by the invention has a nano fine fiber component, and can be effectively inserted into hydrated minerals of cement and other rubber materials, so that the utilization rate of the cement and other rubber materials is improved, the dispersity of cement particles is quickly improved, and the efficacy of a concrete high-efficiency water reducing agent is improved.

Description

technical field [0001] The invention relates to the technical field of water-retaining agents, in particular to a concrete water-retaining agent and a preparation method thereof. Background technique [0002] With the continuous strengthening of my country's infrastructure construction, the demand for concrete continues to rise, resulting in an increasing demand for cement. Therefore, under the premise of ensuring the working performance and mechanical properties of concrete, the amount of cementitious materials in concrete should be reduced. In order to maintain the high strength of concrete, the reduction of cementitious materials often leads to the continuous reduction of concrete water consumption, which in turn affects the working performance of concrete. Due to the limitations of polycarboxylate superplasticizers, the unilateral increase in the amount of concrete superplasticizers often leads to segregation and bleeding of concrete to varying degrees. On the basis of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/46
CPCC04B40/0039C04B2103/465C04B24/383C04B24/38C04B24/32C04B24/2652C04B24/122C04B24/026C04B24/125C04B22/062C04B2103/67C04B2103/50C04B2103/302C04B22/14
Inventor 朱永昌庞永献庞森林李果李丹
Owner 深圳市三绿科技有限公司