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Viscosity reduction type liquid phase composition, preparation method and application thereof

A composition and liquid-phase technology, applied in the field of viscosity-reducing liquid-phase composition and its preparation, viscosity-reducing superplasticizer and its preparation, can solve problems such as difficult construction, high-strength concrete, and heavy operation

Pending Publication Date: 2021-03-19
联泓(江苏)新材料研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the construction of sleepers is mostly cloth-type filling mold, which requires manual roughening, and the high viscosity of high-strength concrete makes the operation heavy and difficult to construct, so it is necessary to increase the softness of concrete and facilitate construction.

Method used

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  • Viscosity reduction type liquid phase composition, preparation method and application thereof
  • Viscosity reduction type liquid phase composition, preparation method and application thereof
  • Viscosity reduction type liquid phase composition, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0066] Preparation Example 1 Preparation of water-reducing mother liquor TL-01

[0067] 49g of polyether macromonomer (molecular weight: 3000, commercially available product WR6251 of Levima Advanced Materials Technology Co., Ltd.) prepared with 2-methallyl alcohol as an initiator was placed in a kettle and dissolved in 32.5g of water, Add 0.06g of hydrogen peroxide (30% by mass aqueous solution), then start to drop 5.2g of acrylic acid, 0.08g of L-ascorbic acid, 0.22g of thioglycolic acid and water mixture, the time of adding is 2.5h, after the addition is completed, ripen for 1h, Cool to room temperature to obtain water-reduced mother liquor TL-01.

[0068] Preparation example 2 Preparation of slump-preserving mother liquor TLB-01

[0069] Put 49g of polyether macromonomer (molecular weight: 2400, commercially available product SR7302 of Levima Advanced Materials Technology Co., Ltd.) prepared with isopentenol as an initiator and dissolve it in 32.5g of water, add 0.06g Hy...

Embodiment 1

[0071] 49g is prepared with reference to the embodiment of CN109679086A, and the polyether macromonomer (weight average molecular weight is about 5000) prepared by using 2-vinyloxyethanol as an initiator and end-blocking with m-toluene isocyanate is placed in a kettle in 32.5g of water Dissolve, add 0.06g hydrogen peroxide (30% by mass aqueous solution), then start to dropwise add 4.9g acrylic acid, 0.12gL-ascorbic acid, 0.38g mercaptoacetic acid mixed solution, dropwise time is 50min, after dropwise addition, ripen for 1.5h, Cool to room temperature to obtain viscosity-reducing mother liquor A, and compound it with water-reducing mother liquor TL-01 and slump-preserving mother liquor TLB-01 at a mass ratio of 23:4:5 to obtain a viscosity-reducing superplasticizer for sleepers.

Embodiment 2

[0073] 49g of the polyether macromonomer (molecular weight is about 4000) prepared by referring to the example of CN109679086A with 2-vinyloxyethanol as the initiator and end-capped with m-toluene isocyanate was dissolved in 32.5g of water in a kettle, Add 0.06g hydrogen peroxide (30% by mass aqueous solution), then start dropwise adding a mixture of 3.2g acrylic acid, 0.12gL-ascorbic acid, and 0.22g mercaptopropionic acid. The dropwise addition time is 1h. After the dropwise addition, mature for 1.5h and cool After reaching room temperature, mother liquor B was obtained, and mixed with water-reducing mother liquor TL-01 and slump-preserving mother liquor TLB-01 at a ratio of 28:5:4 to obtain a viscosity-reducing superplasticizer for sleepers.

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Abstract

The invention relates to a viscosity reduction type liquid phase composition, a preparation method and application thereof, in particular to a viscosity reduction type water reducing agent applied tosimilar construction modes such as tubular piles and sleepers, a preparation method and application thereof, and belongs to the technical field of concrete admixtures. The invention provides a liquidphase composition, which comprises the following components: (1) one or two or more polymers P selected from polymers of polyether macromonomers and micromonomers; and (2) one or two or more water reducing agents Q selected from a water reducing type polycarboxylate water reducing agent, a slow release type polycarboxylate water reducing agent and a slump retaining type polycarboxylate water reducing agent; wherein the proviso is that the liquid phase composition comprises two or more polymers P or two or more water reducing agents Q. The liquid phase composition disclosed by the invention canbe widely applied to multiple fields of commercial concrete of pumping type tubular piles, high-strength concrete pumping and high stone powder machine-made sand, and meets the requirements of different application fields such as tubular piles or sleepers on the performance of concrete admixtures.

Description

technical field [0001] The invention relates to a viscosity-reducing liquid phase composition and its preparation method and application, especially a viscosity-reducing water-reducing agent used in similar construction modes such as pipe piles and sleepers, its preparation method and application, and belongs to the technical field of concrete admixtures . Background technique [0002] At present, most of the pipe pile fields still use naphthalene-based water reducers. Although naphthalene-based superplasticizers have a good viscosity-reducing effect, they have defects such as large dosage when used, and faster loss of mixed concrete compared with polycarboxylate-based superplasticizers. What's more serious is that the raw materials for the preparation of naphthalene-based water reducers are harmful substances, and high-temperature heating is required during the preparation process, resulting in serious environmental pollution, and the concrete mixed with naphthalene-based ...

Claims

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Application Information

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IPC IPC(8): C04B24/26C08F283/06C08F220/06C08F220/20C04B103/30
CPCC04B40/0039C04B24/2647C04B24/2605C08F283/065C04B2103/302C04B2103/308C08F220/06C08F220/20
Inventor 张俊牛峰李华威黄立军
Owner 联泓(江苏)新材料研究院有限公司
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