CN103467052B - A kind of high-strength water-resistance desulphurization building gypsum self-leveling material and preparation method thereof - Google Patents

A kind of high-strength water-resistance desulphurization building gypsum self-leveling material and preparation method thereof Download PDF

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Publication number
CN103467052B
CN103467052B CN201310385173.5A CN201310385173A CN103467052B CN 103467052 B CN103467052 B CN 103467052B CN 201310385173 A CN201310385173 A CN 201310385173A CN 103467052 B CN103467052 B CN 103467052B
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water
leveling
powder
mortar
gypsum
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CN103467052A (en
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何玉鑫
万建东
唐绍林
瞿县
唐永波
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JIANGSU EFFUL SCIENCE AND TECHNOLOGY CO., LTD.
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JIANGSU EFFUL SCIENCE AND TECHNOLOGY Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

A kind of high-strength water-resistance desulphurization building gypsum self-leveling material and preparation method thereof, comprises following feed composition and content: raw material comprises major ingredient and auxiliary material; It is 50% ~ 70% desulphurization building gypsum, 6% ~ 10% cement, 20% ~ 40% slag and 0% ~ 20% flyash that major ingredient comprises massfraction, and auxiliary material is assigned as 0% ~ 6% slag, the special water reducer of 0.1% ~ 0.4% gypsum, 0.1% ~ 0.4% retardant, 1% ~ 4% crystal whisker of gypsum, 0.05% ~ 0.1% rubber powder and 0% ~ 40% sand coarse aggregate ratio by major ingredient massfraction; Preparation method is: comprise following operation: mortar preparation section, mortar slurry preparation section; Described mortar preparation section is: by the ratio powder process of each raw material involved in the present invention according to above-mentioned restriction, mix in ball mill, forms powder; Described mortar slurry preparation section is: according to water and mortar preparation section gained powder quality than adding water in the powder made for 0.3:1 ~ 0.4:1, uniform stirring, then adds defoamer; Described self-leveling material has high strength and enhanced water resistance.

Description

A kind of high-strength water-resistance desulphurization building gypsum self-leveling material and preparation method thereof
Technical field
The present invention relates to a kind of self-leveling material, particularly a kind of high strength, desulphurization building gypsum self-leveling material that water tolerance is strong and preparation method thereof.
Background technology
Desulfurated plaster is the by product of heat power plant, and 2012 produce nearly 6,000 ten thousand t of desulfurated plaster, and utilization ratio reaches 86%.Desulfurated plaster is gypsum renewable resources, to its comprehensive utilization, is conducive to environment protection, save energy and natural resources, meets China's strategy of sustainable development requirement.Desulfurated plaster is mainly used in the products such as cement setting retarder, Thistle board, gypsum block, brushing gypsum and high strength gypsum, the utilization that its attached water amount is large, return frost, cracking, water-fast difference and the defect such as low value-added constrain desulfurated plaster; Exploitation industry by-product gypsum self-leveling material, had both been conducive to energy-saving and emission-reduction, had realized resource-conserving, environmentally friendlyly to have combined, can promote and develop continuable green ecological civilization construction again.Gypsum-based self-leveling material mainly with plaster of Paris, а-high strength gypsum, anhydrite etc. for base material, making by adding various admixture, aggregate etc., having that shrinking percentage is little, heat insulating, sound insulation, damping and speed of application is simple and comprehensive cost is low; But this gypsum-based self-leveling material intensity and water resistance bad.
Summary of the invention
A kind of high-strength water-resistance desulphurization building gypsum self-leveling material of the present invention and preparation method thereof, the problem mainly solved is the intensity and the water tolerance that promote described self-leveling material.
technical scheme
a kind of high-strength water-resistance desulphurization building gypsum self-leveling material, comprises following feed composition and content: raw material comprises major ingredient and auxiliary material; It is 50% ~ 70% desulphurization building gypsum, 6% ~ 10% cement, 20% ~ 40% slag and 0% ~ 20% flyash that major ingredient comprises massfraction, and auxiliary material is assigned as 0% ~ 6% slag, the special water reducer of 0.1% ~ 0.4% gypsum, 0.1% ~ 0.4% retardant, 1% ~ 4% crystal whisker of gypsum, 0.05% ~ 0.1% rubber powder and 0% ~ 40% sand coarse aggregate ratio by major ingredient massfraction.
Described high-strength water-resistance desulphurization building gypsum self-leveling material preparation method is: comprise following operation: mortar preparation section, mortar slurry preparation section; Described mortar preparation section is: by the ratio powder process of each raw material involved in the present invention according to above-mentioned restriction, mix in ball mill, forms powder; Described mortar slurry preparation section is: according to water and mortar preparation section gained powder quality than adding water in the powder made for 0.3:1 ~ 0.4:1, uniform stirring, then adds defoamer.
In described mortar preparation section, the time that each raw material mixes in ball mill is 8 ~ 12min.
In described mortar slurry preparation section, the time of stirring powder is 6 ~ 10min, and the content of described defoamer is 0.2 ~ 0.4mL.
beneficial effect
A kind of high-strength water-resistance desulphurization building gypsum self-leveling material preparation method of the present invention, has following significant progress:
(1) can be analyzed by the experimental performance table of each embodiment, the coefficient of softening of each embodiment is respectively: 0.82,0.93,0.90,0.98,0.90,0.86, can find out that its maximum coefficient of softening can reach 0.98, minimum coefficient of softening also can reach 0.82; So can illustrate that coefficient of softening of the present invention is high, water resistance is strong.
(2) as can be seen from the performance table of embodiment, most high compressive strength and folding strength reach 78.2MPa, 16.5MPa respectively; Exceed general intensity, can be high so that strength property of the present invention to be described.
(3) high strength of the present invention and enhanced water resistance desulphurization building gypsum self-leveling material, make full use of desulphurization building gypsum, massfraction is greater than 50%, and technique is simple, and production cost is low, reproducible.
(4) high strength prepared of the present invention and enhanced water resistance desulphurization building gypsum self-leveling material, slurry is suitable for time of coagulation, and degree of mobilization is large, and water retention is good.
(5) the special water reducer of the gypsum adopted effectively can reduce water consumption, also has delayed coagulation simultaneously, better with the compatibleness of retardant, effectively can regulate mobility and the time of coagulation of gypsum self-leveling mortar.
(6) adopt flyash and slag to improve the workability of desulphurization building gypsum, under cement and the effective excitation of slag, improve mechanical property and the water resistance of system, described self-leveling material can be used at indoor and outdoors.
Embodiment
embodiment1:
This example takes basic recipe: major ingredient comprises desulphurization building gypsum 50%, fine slag contents 40% and cement mixing content 10%; Accessory package is containing steel slag content 2%, water reducer volume 0.1%, retardant 0.4%, desulfurated plaster whisker 1%, water-holding agent 0.05%; Mix in ball mill, form powder; Water and powder quality are than 0.3:1, and uniform stirring, adds 0.2mL defoamer.
The properties of desulphurization building gypsum self-leveling material is in table 1.
embodiment2:
This example takes basic recipe: major ingredient comprises desulphurization building gypsum 60%, fine slag contents 30% and cement mixing content 10%; Accessory package contains water reducer volume 0.1%, retardant 0.2 %, desulfurated plaster whisker 3%, water-holding agent 0.07%, sand coarse aggregate ratio 2%; Mix in ball mill, form powder; Water and powder quality are than 0.35:1, and uniform stirring, adds 0.3mL defoamer.
The properties of desulphurization building gypsum self-leveling material is in table 2.
embodiment3:
This example takes basic recipe: major ingredient comprises desulphurization building gypsum 70%, fine slag contents 20% and doping quantity of fly ash 10%; Accessory package is containing water reducer volume 0.35%, retardant 0.15%, desulfurated plaster whisker 2%, water-holding agent 0.08%; Mix in ball mill, form powder; Water and powder quality are than 0.4:1, and uniform stirring, adds 0.4mL defoamer.
The properties of desulphurization building gypsum self-leveling material is in table 3.
embodiment4:
This example takes basic recipe: major ingredient comprises desulphurization building gypsum 55%, fine slag contents 35% and cement mixing content 10%; Accessory package contains steel slag content 0.45%, water reducer volume 0.15%, retardant 0.25%, desulfurated plaster whisker 1.5%, water-holding agent 0.07%, sand coarse aggregate ratio 4%; Mix in ball mill, form powder; Water and powder quality are than 0.37:1, and uniform stirring, adds 0.2mL defoamer.
The properties of desulphurization building gypsum self-leveling material is in table 4.
embodiment5:
This example takes basic recipe: major ingredient comprises desulphurization building gypsum 50%, fine slag contents 30%, doping quantity of fly ash 10% and cement mixing content 10%; Accessory package is containing steel slag content 0.8%, water reducer volume 0.26%, retardant 0.17%, desulfurated plaster whisker 1.6%, water-holding agent 0.08%; Mix in ball mill, form powder; Water and powder quality are than 0.32:1, and uniform stirring, adds 0.3mL defoamer.
The properties of desulphurization building gypsum self-leveling material is in table 5.
embodiment6:
This example takes basic recipe: major ingredient comprises desulphurization building gypsum 50%, fine slag contents 20%, doping quantity of fly ash 20% and cement mixing content 10%; Accessory package contains water reducer volume 0.38%, retardant 0.35%, desulfurated plaster whisker 2.5%, water-holding agent 0.1%; Mix in ball mill, form powder; Water and powder quality are than 0.3:1, and uniform stirring, adds 0.23mL defoamer.
The properties of desulphurization building gypsum self-leveling material is in table 6.

Claims (4)

1. a high-strength water-resistance desulphurization building gypsum self-leveling material, is characterized in that, comprises following feed composition and content: raw material comprises major ingredient and auxiliary material; It is 50% ~ 70% desulphurization building gypsum, 6% ~ 10% cement, 20% ~ 40% slag and 0% ~ 20% flyash that major ingredient comprises massfraction, and auxiliary material is assigned as 0% ~ 6% slag, the special water reducer of 0.1% ~ 0.4% gypsum, 0.1% ~ 0.4% retardant, 1% ~ 4% crystal whisker of gypsum, 0.05% ~ 0.1% rubber powder by major ingredient massfraction.
2. high-strength water-resistance desulphurization building gypsum self-leveling material according to claim 1, it is characterized in that, preparation method is: comprise following operation: mortar preparation section, mortar slurry preparation section; Described mortar preparation section is: by each raw material according to the ratio powder process limited, mix in ball mill, forms powder; Described mortar slurry preparation section is: according to water and mortar preparation section gained powder quality than adding water in the powder made for 0.3:1 ~ 0.4:1, uniform stirring, then adds defoamer.
3. high-strength water-resistance desulphurization building gypsum self-leveling material according to claim 2, is characterized in that, in described mortar preparation section, the time that each raw material mixes in ball mill is 8 ~ 12min.
4. high-strength water-resistance desulphurization building gypsum self-leveling material according to claim 2, is characterized in that, in described mortar slurry preparation section, the time of stirring powder is 6 ~ 10min, and the content of described defoamer is 0.2 ~ 0.4mL.
CN201310385173.5A 2013-08-30 2013-08-30 A kind of high-strength water-resistance desulphurization building gypsum self-leveling material and preparation method thereof Active CN103467052B (en)

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CN106007608B (en) * 2016-05-10 2019-03-08 马振义 A kind of water-proof gypsum base anticracking grout
CN106007606B (en) * 2016-05-10 2019-03-08 马振义 A kind of water-proof gypsum base thermal insulation mortar
CN106007607A (en) * 2016-05-10 2016-10-12 马振义 Waterproof gypsum-based thick fireproof coating
CN106007622B (en) * 2016-05-24 2018-08-24 福建建工建材科技开发有限公司 A kind of half water desulfurized gypsum base surfacing self-leveling floor mortar of β types
CN108947440A (en) * 2018-08-17 2018-12-07 佛山市禅城区诺高环保科技有限公司 A kind of high cracking resistance land plaster

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CN102173707A (en) * 2011-01-31 2011-09-07 上海市建筑科学研究院(集团)有限公司 Desulfurization alpha semi-hydrated gypsum self-leveling mortar
CN102424563A (en) * 2011-09-13 2012-04-25 同济大学 Desulfurized gypsum based antistatic self-leveling mortar and its preparation method
CN102503289A (en) * 2011-11-23 2012-06-20 成都新柯力化工科技有限公司 Thermal-insulating anti-flaming building material and preparation method thereof

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN102173707A (en) * 2011-01-31 2011-09-07 上海市建筑科学研究院(集团)有限公司 Desulfurization alpha semi-hydrated gypsum self-leveling mortar
CN102424563A (en) * 2011-09-13 2012-04-25 同济大学 Desulfurized gypsum based antistatic self-leveling mortar and its preparation method
CN102503289A (en) * 2011-11-23 2012-06-20 成都新柯力化工科技有限公司 Thermal-insulating anti-flaming building material and preparation method thereof

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