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A kind of concrete waste slurry concentrate suspension stabilizer and preparation method thereof

The technology of suspension stabilizer and concentrated liquid is applied in the field of suspension stabilizer of concrete waste slurry concentrate and its preparation, which can solve the problems of poor stability of concrete waste slurry concentrate, prone to moisture stratification, poor homogeneity, etc. Suspension and dispersion effect, reduction of bleeding stratification and compaction, and hydration inhibition effect

Active Publication Date: 2022-07-01
CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies, the purpose of the present invention is to provide a suspension stabilizer for concrete waste slurry concentrate and a preparation method thereof, which can effectively solve the problems of poor stability, poor homogeneity and problems of the ground concrete waste slurry concentrate during storage and application. Prone to problems such as water layering and hardening

Method used

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  • A kind of concrete waste slurry concentrate suspension stabilizer and preparation method thereof
  • A kind of concrete waste slurry concentrate suspension stabilizer and preparation method thereof
  • A kind of concrete waste slurry concentrate suspension stabilizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0040] A preparation method of concrete waste slurry concentrate suspension stabilizer, the specific steps are as follows:

[0041] (1) Weigh 100g of glycerol and 2.8g of deionized water in the reaction vessel, stir and mix evenly, then add 12.6g of maltose and 1.4g of hydroxypropyl methylcellulose to it, heat up to 70°C, and continue to stir for 2h, to obtain a clear solution;

[0042] (2) Weigh 1.4g of chlorite and add it to the solution in step 1), and the rotating speed is 6000rpm and continues high-speed stirring for 1h to obtain a uniform suspension;

[0043] (3) Add 0.7g phosphorous acid to the suspension in step 2), stir for 5min, then continuously add 21g pyrophosphoric acid within 1h, control the reaction temperature at 70°C, and react for 8h to obtain a suspension of concrete waste slurry concentrate stabilizer.

Embodiment 2

[0045] A preparation method of concrete waste slurry concentrate suspension stabilizer, the specific steps are as follows:

[0046] (1) Weigh 100g of glycerol and 3.1g of deionized water in the reaction vessel, stir and mix evenly, then add 23.1g of lactose and 1.5g of hydroxypropyl cellulose to it, heat up to 80°C, and continue to stir for 4h to obtain a clear solution;

[0047] (2) take by weighing 1.5g illite and add it to the solution in step 1), and the rotating speed is 10000rpm and continues high-speed stirring for 3h to obtain a uniform suspension;

[0048] (3) Add 1.5g phosphoric acid to the suspension in step 2), stir for 10min, then continuously add 23.1g phosphorus trichloride within 2h, control the reaction temperature at 90°C, and react for 7h to obtain a concentrated concrete waste slurry Liquid suspension stabilizer.

Embodiment 3

[0050] A preparation method of concrete waste slurry concentrate suspension stabilizer, the specific steps are as follows:

[0051] (1) Weigh 100g of glycerol and 4.6g of deionized water in the reaction vessel, stir and mix evenly, then add 7.7g of sucrose and 4.6g of hydroxyethyl cellulose to it, heat up to 70°C, and continue to stir for 3h to obtain a clear solution;

[0052] (2) take by weighing 3.1g kaolinite and add it to the solution in step 1), and the rotating speed is 9000rpm and continues high-speed stirring for 2h to obtain a uniform suspension;

[0053] (3) 1.5g of sulfurous acid was added to the suspension in step 2), stirred for 8min, then 32.3g of phosphorus pentoxide was continuously added in 2h, the reaction temperature was controlled at 75°C, and the reaction was performed for 6h to obtain concrete waste slurry Concentrate suspension stabilizer.

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Abstract

The invention discloses a suspension stabilizer for concrete waste slurry concentrate and a preparation method thereof, and belongs to the technical field of concrete waste slurry concentration. %, water-soluble carbohydrates 5-15%, cellulose ether derivatives 1-3%, glycerol 60-75%, phosphate esterification reagent 15-25%, deionized water 2-5% and catalyst 0.5-3% %. The present invention uses expansive clay, water-soluble sugars, cellulose ether derivatives, glycerol and phosphoric acid esterification reagents as main raw materials, and under the action of a catalyst, the concrete waste slurry is prepared through the esterification reaction of hydroxyl groups and phosphoric acid groups Concentrate suspension stabilizer; through the synergistic effect of each component, the stability and homogeneity of concrete waste slurry concentrate during storage and application are significantly improved, and the phenomenon of exudate stratification and compaction is reduced.

Description

technical field [0001] The invention relates to the technical field of concrete waste slurry concentration, in particular to a concrete waste slurry concentrate suspension stabilizer and a preparation method thereof. Background technique [0002] Concrete waste slurry is a liquid slurry after the sand, gravel and coarse sand are separated from the waste water and waste residues generated after the concrete production, transportation and construction related equipment are cleaned by the sand and gravel separation equipment. Concrete waste slurry is composed of solid slag (solid particles) and clarified liquid. The solid slag is mainly composed of partially unhydrated cementitious materials, hydration products and a small amount of stone powder, mud and other solid particles; The supernatant of the time, its pH value is alkaline, and also contains some soluble inorganic salts of concrete, admixture ions, etc. If it is directly discharged without disposal, it will cause great ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C04B7/24
CPCC04B40/0039C04B7/246C04B2103/0082C04B24/425C04B24/10C04B24/383C04B24/02C04B24/003Y02P40/10
Inventor 杨文曾超王军刘明高育欣吴雄张磊王福涛高达
Owner CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD
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