CN102951889A - Resin-modified desulfurized gypsum-mining (steel) slag-straw-based wall material and preparation method thereof - Google Patents
Resin-modified desulfurized gypsum-mining (steel) slag-straw-based wall material and preparation method thereof Download PDFInfo
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- CN102951889A CN102951889A CN2012104481459A CN201210448145A CN102951889A CN 102951889 A CN102951889 A CN 102951889A CN 2012104481459 A CN2012104481459 A CN 2012104481459A CN 201210448145 A CN201210448145 A CN 201210448145A CN 102951889 A CN102951889 A CN 102951889A
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention belongs to the field of new environment-friendly building materials, in particular relates to a non-calcined and non-steam-cured method for preparing a light wall material by taking polymer-modified desulfurized gypsum-waste residue (steel) slag-agricultural waste straw as matrixes. The light wall material comprises the following materials in parts by weight: 25-48 parts of original-state desulfurized gypsum, 18-25 mining (steel) slag, 1-3.8 parts of composite excitant, 10-20 parts of straws treated by pretreating agent (containing mildew preventive ), 0.2-6 parts of polymer emulsion and 18-26 parts of water. The preparation method comprises the steps: adopting the original-state desulfurized gypsum and mining (steel) slag as binding materials, carrying out battery mould and forming, and naturally curing to obtain the light wall material. The light wall material prepared by the manufacturing method does not have powder flying and mildew on the surface, is light in self weight and low in cost, and can meet the various requirements of construction engineering.
Description
Technical field
The invention belongs to environment-friendly type New Building Materials field.Relate to a kind of high-performance light materials for wall with practical value with polymer modification desulfurated plaster-ore deposit (steel) slag-crushed straw aggregate preparation.
Background technology
Existing light-weight wall material mainly contains plaster of Paris porous plate, aluminosulfate cement porous plate and silicate-base aerating plate, and plaster of Paris needs low temperature calcination, and the Characteristics In The Strength of Porous Plates of preparation is low, water resisting property is poor, quality is unstable, and price is high, is in a disadvantageous position gradually in the building material market competition; Aluminosulfate cement needs high-temperature calcination, and the porous plate anti-carbonation properties of preparation is poor, and price is high, is also eliminated by market gradually.Silicate aerating sheet material is to use in the market more material, although it need not calcined, also wants steam press maintenance, consumes a lot of energy, has simultaneously low strength, easily carbonization, and the shortcoming such as be difficult to whitewash.Therefore, invent a kind of non-calcining, non-steam-cured energy saving and environment friendly and have anti-carbonization, the good hydraulicity, be easy to construct, walling that cost is low is very important.
There is very abundant stalk resource in China, and annual production reaches more than 700,000,000 ton, and the useless or burning of mostly abandoning brings severe contamination to environment.It as material of construction, not only can be reduced and burn the environmental pollution that causes, also can reduce the exploitation of non-renewable mineral resource, thereby protect physical environment.
The Patents for preparing walling with stalk, gypsum of published application has in the starting material that CN101733832B " a kind of straw gypsum lightweight plate and preparation method thereof " announce, and gelling material is the plaster of Paris through calcining; Application number is that " a kind of matrix material take cotton stalk particle and gypsum as matrix " employed gelling material of 201210083559.6 also is the plaster of Paris through calcining; Application number is that " a kind of cotton stalk skin strengthens matrix material of gypsum and preparation method thereof " employed gelling material of 201110312342 also is the plaster of Paris through calcining, and strongthener is cotton stalk skin; Application number is that 201110223667.4 " desulfurized gesso of flue gas environmental protection building block " is though employed gelling material is the mixture of desulfurization dihydrate gypsum and flyash, but its employed stalk is powdery, and volume only has 3-5%, and its water-resisting agent is the calcium stearate that the hydrophobic effect is arranged; Application number is that " a kind of stalk fibre strengthen desulfurized gypsum base light heat-insulation wall material " employed gelling material of 200910223525.0 is the mixture of desulfurization dihydrate gypsum and slag, although this composite gelled material has certain hydraulicity, and production technique is simple, cost is lower, but this patent is not considered stalk and is added the xylogen of rear dissolving to the delayed coagulation of gypsum and slag reaction, and may produce in the wet environment middle and later periods hydrated product that the dangerous phenomenon of swelling cracking and gypsum and slag generate easily in air carbonization become the phenomenon of powder, in addition in southern wet environment stalk produce and use procedure in may produce also consideration of Signs of Mould.
Summary of the invention
Technical problem to be solved by this invention and the objective of the invention is for solution is calcined by no means, non-steam-cured containing in the stalk walling because the gelling material sclerosis that stalk causes is slow and easy mouldy problem, and the easy surperficial bleeding of this hydraulic cementing materials and carbonization play the problem of powder, provides a kind of by polymer modification desulfurated plaster-ore deposit (steel) refuse lac gel material with add the low-cost method for preparing the energy-conserving and environment-protective walling of pretreated straw.
Technical problem of the present invention is by taking following technical scheme to solve:
A kind of polymer modification slag-desulfurated plaster-stalk is the light-weight wall material and preparation method thereof of the matrix material preparation of matrix.It is characterized in that it is comprised of following material by mass fraction: original state desulfurated plaster 25-48 part, ore deposit (steel) slag 18-25 part, compound activator 1-3.8 part, stalk 10-20 part that pretreating agent (containing mould inhibitor) is processed, polymer emulsion 0.2-6 part, water 18-26 part.
Described light-weight wall material adopts the following step preparation:
A. after stalk being broken into the long particle of 0.5-2cm, dip treating and dry in 0.1%-5% concentration sodium nitrite solution, through water glass dip treating and the drying of 1-10% concentration, for subsequent use again.
B. mix and stir 30 seconds in the stirrer with being added to after desulfurated plaster, ore deposit (steel) ground-slag, exciting agent, polymer emulsion, the water weighing, add the pretreated straw of step a preparation, mix and stir again 30-90 second.
C. the slurry that mixes and stirs being poured in the battery mould, is 3000-5000 time/minute vibratory compaction in amplitude 0.1-0.3mm, vibrational frequency.
D. then the demoulding after 20-40 ℃ of lower maintenance 1-2 days got final product in natural curing 15-26 days.
Technical problem of the present invention further can also solve by taking following technical scheme:
Stalk of the present invention is cotton stalk, maize straw, Wheat Straw, straw and soybean stalk, after straw powder is broken into the long particle of 0.5-2cm, with dip treating in the 0.1%-5% concentration sodium nitrite solution with mildew-resistant,, overcome or alleviated stalk at the negative interaction of walling production when using in case the delayed coagulation that stripping produces from stalk of low-molecular-weight lignocellulose with the water glass dip treating of 1-10% concentration.
Described polymer emulsion of the present invention is the mixture that contains the multiple organic polymer of 95-98% ethylene-vinyl acetate copolymer emulsion, 1.5-3% styrene-butadiene emulsion, 0.5-2% epoxy emulsion.This mixture not only has good adhesive power with organic stalk, and epoxide group wherein and inorganic materials (gypsum and slag hydrated product) also have good cohesive force; This mixture can increase the viscosity of slurry liquid phase, and bleeding when reducing moulding reduces after the moulding that powder is played on the surface of goods and carbonization plays the powder phenomenon, reduces water-intake rate, improves water tolerance and folding strength.
Described compound activator of the present invention be one or more mixtures of calcium oxide, calcium hydroxide, sodium hydroxide, sodium sulfate, yellow soda ash, alunite.This exciting agent mainly promotes the disintegration of slag structure in early days, and the formation that participates in forming ettringite or promote ettringite is complete at 3-7 days post consumptions, prevents the reduction of the walling intensity that later stage participation expansion causes.
During described materials for wall moulding of the present invention, the slump of slurry is 1-3cm, the vibrational frequency of vibrator 5000 times/minutes, amplitude 0.1-0.3mm.
Environmental and ecological walling of the present invention has following advantage:
(1) raw materials for production are industrial waste and waste crop materials;
(2) production process does not need calcining or heating, is a kind of product and production method of energy-conserving and environment-protective.
(3) because gypsum is excessive, and most of gypsum are not participated in reaction, thereby become filler, and hydrated product is the hydraulicity, and therefore, this walling not only has advantages of plastering, and stronger moistureproof ability is arranged.
(4) the solid wall plate apparent density is not more than 1100kg/m
3, the hollow wall panel apparent density is not more than 800kg/m
3
(5) production technique is simple, and production process is easy to control, and manufacturing cost is low.
Embodiment:
The present invention is further illustrated below in conjunction with specific examples.
Embodiment 1
Adopt following proportioning in the present embodiment:
Slag 130kg desulfurated plaster 380 kg
Exciting agent 10 kg pretreated soybean stalks 78 kg
Polymer emulsion 2 kg water 250 kg
The preparation of employing following steps:
After soybean stalk being broken into the particle of 0.5-2cm length, dip treating and dry in 0.1%-5% concentration sodium nitrite solution, through water glass dip treating and the drying of 1-10% concentration, for subsequent use again.Mixed and stirred in the stirrer 30 seconds being added to after the weighings such as desulfurated plaster, slag powders, exciting agent, polymer emulsion, water, adding the pretreated soybean stalk, mix and stir again 30-90 second.The slurry of uniform mixing is poured in the battery mould [single moulded dimension is that 650mm * 500mm * 80mm(has 7 Φ 50mm holes)], be 3000-5000 time/minute vibrator vibratory compaction in amplitude 0.1-0.3mm, vibrational frequency.The demoulding after 20-40 ℃ of lower maintenance 1-2 days, then natural curing is 28 days.The quality water-intake rate of product is 12.1%, apparent density 743 kg/m
3, breaking load 2035N, coefficient of softening are 0.65.
Embodiment 2
Adopt following proportioning in the present embodiment:
Slag 130kg desulfurated plaster 380 kg
Exciting agent 10 kg pre-treatment cotton stalk 78kg
Polymkeric substance 2 kg water 210 kg
The preparation of employing following steps:
After cotton stalk being broken into the particle of 0.5-2cm length, dip treating and dry in 0.1%-5% concentration sodium nitrite solution, through water glass dip treating and the drying of 1-10% concentration, for subsequent use again.Mixed and stirred in the stirrer 30 seconds being added to after the weighings such as desulfurated plaster, slag powders, exciting agent, polymer emulsion, water, adding the pre-treatment cotton stalk, mix and stir again 30-90 second.The slurry of uniform mixing being poured in the battery mould [single moulded dimension is that 650mm * 500mm * 80mm(has 7 Φ 50mm holes)], is vibratory compaction on 3000-5000 time/minute shaking table in amplitude 0.1-0.3mm, vibrational frequency.The demoulding after 20-40 ℃ of lower maintenance 1-2 days, then natural curing is 28 days.The quality water-intake rate of product is 9.8%, apparent density 763 kg/m
3, breaking load 2320N, coefficient of softening are 0.71.
Example 3
Slag 180kg desulfurated plaster 330 kg
Exciting agent 10 kg pre-treatment cotton stalk 120kg
Polymkeric substance 2 kg water 280 kg
After cotton stalk being broken into the particle of 0.5-2cm length, dip treating and dry in 0.1%-5% concentration sodium nitrite solution, through water glass dip treating and the drying of 1-10% concentration, for subsequent use again.Mixed and stirred in the stirrer 30 seconds being added to after the weighings such as desulfurated plaster, slag powders, exciting agent, polymer emulsion, water, adding the pre-treatment cotton stalk, mix and stir again 30-90 second.The slurry of uniform mixing being poured in the battery mould [single moulded dimension is that 650mm * 500mm * 80mm(has 7 Φ 50mm holes)], is vibratory compaction on 3000-5000 time/minute shaking table in amplitude 0.1-0.3mm, vibrational frequency.The demoulding after 20-40 ℃ of lower maintenance 1-2 days, then natural curing is 28 days.The quality water-intake rate of product is 9.8%, apparent density 730 kg/m
3, breaking load 2410N, coefficient of softening are 0.70.
The present invention is not limited to the cited scheme of above examples of implementation, so long as the scheme that this specification sheets summary of the invention is mentioned all can be implemented.
Claims (7)
1. a polymer modification desulfurated plaster-ore deposit (steel) slag-crushed straw aggregate is light-weight wall material of matrix and preparation method thereof, it is characterized in that it is comprised of following material by mass fraction: original state desulfurated plaster 25-48 part, ore deposit (steel) slag 18-25 part, compound activator 1-3.8 part, stalk 10-20 part that pretreating agent (containing mould inhibitor) is processed, polymer emulsion 0.2-6 part, water 18-26 part.
2. be light-weight wall material of matrix and preparation method thereof according to right 1 described polymer modification desulfurated plaster-ore deposit (steel) slag-crushed straw aggregate, the stalk that described pretreating agent (containing mould inhibitor) is processed is: after cotton stalk, maize straw, Wheat Straw, straw and soybean stalk are ground into the long particle of 0.5-2cm, dip treating and dry in 0.1%-5% concentration sodium nitrite solution is again through water glass dip treating and the dried work in-process of 1-10% concentration.
3. be light-weight wall material of matrix and preparation method thereof according to right 1 described polymer modification desulfurated plaster-ore deposit (steel) slag-crushed straw aggregate, it is characterized in that, described polymkeric substance is the mixed emulsion that contains strong polar group and rigidity-toughness balanced, contains the mixture of the multiple organic polymer of 95-98% ethylene-vinyl acetate copolymer emulsion, 1.5-3% styrene-butadiene emulsion, 0.5-2% epoxy emulsion.
4. be light-weight wall material of matrix and preparation method thereof according to right 1 described polymer modification desulfurated plaster-ore deposit (steel) slag-crushed straw aggregate, described desulfurated plaster is thermal power plant's original state desulfurated plaster, and specific surface area is 300-500m
2/ kg.
5. be light-weight wall material of matrix and preparation method thereof according to right 1 described polymer modification desulfurated plaster-ore deposit (steel) slag-crushed straw aggregate, the specific surface area of described ore deposit (steel) slag is 400-600m
2/ kg.
6. be light-weight wall material of matrix and preparation method thereof according to right 1 described polymer modification desulfurated plaster-ore deposit (steel) slag-crushed straw aggregate, described compound activator is one or more mixtures of calcium oxide, calcium hydroxide, sodium hydroxide, sodium sulfate, yellow soda ash, alunite.
7. according to right 1 described light-weight wall material, it is characterized in that it adopts non-calcining, non-steam curing process, is namely made by following preparation method:
A. after stalk being broken into the long particle of 0.5-2cm, dip treating and dry in 0.1%-5% concentration sodium nitrite solution, also dry through the water glass dip treating of 1-10% concentration again;
B. with being added in the stirrer after the weighings such as desulfurated plaster, ore deposit (steel) ground-slag, exciting agent, polymer emulsion, water, mixed and stirred 30 seconds, add again the pretreated straw of step a preparation, mix and stir 30-90 second;
C. the slurry that mixes and stirs being poured in the battery mould, is 3000-5000 time/minute vibrator moulding in amplitude 0.1-0.3mm, vibrational frequency;
D. the demoulding after 20-40 ℃ of lower maintenance 1-2 days, then natural curing 15-26 days.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104481459A CN102951889A (en) | 2012-11-12 | 2012-11-12 | Resin-modified desulfurized gypsum-mining (steel) slag-straw-based wall material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104481459A CN102951889A (en) | 2012-11-12 | 2012-11-12 | Resin-modified desulfurized gypsum-mining (steel) slag-straw-based wall material and preparation method thereof |
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| CN102951889A true CN102951889A (en) | 2013-03-06 |
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| CN2012104481459A Pending CN102951889A (en) | 2012-11-12 | 2012-11-12 | Resin-modified desulfurized gypsum-mining (steel) slag-straw-based wall material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909690A (en) * | 2015-05-21 | 2015-09-16 | 安徽绿风环保节能材料有限公司 | Preparation method for autoclaved aerated concrete block by utilizing plant fibers |
| CN108439882A (en) * | 2018-04-28 | 2018-08-24 | 江苏金贸科技发展有限公司 | Stalk desulfurated plaster composite wall material and preparation method thereof |
| CN111875331A (en) * | 2020-07-30 | 2020-11-03 | 四川绵筑新材料有限公司 | High-imitation wood gypsum base plate and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010173A (en) * | 2010-11-15 | 2011-04-13 | 重庆大学 | Method for preparing heat insulation anti-cracking raw soil bricks |
| CN102603262A (en) * | 2012-03-27 | 2012-07-25 | 新疆农业大学 | Composite building material by taking cotton straw crushed aggregate and gypsum as matrix |
-
2012
- 2012-11-12 CN CN2012104481459A patent/CN102951889A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010173A (en) * | 2010-11-15 | 2011-04-13 | 重庆大学 | Method for preparing heat insulation anti-cracking raw soil bricks |
| CN102603262A (en) * | 2012-03-27 | 2012-07-25 | 新疆农业大学 | Composite building material by taking cotton straw crushed aggregate and gypsum as matrix |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909690A (en) * | 2015-05-21 | 2015-09-16 | 安徽绿风环保节能材料有限公司 | Preparation method for autoclaved aerated concrete block by utilizing plant fibers |
| CN108439882A (en) * | 2018-04-28 | 2018-08-24 | 江苏金贸科技发展有限公司 | Stalk desulfurated plaster composite wall material and preparation method thereof |
| CN108439882B (en) * | 2018-04-28 | 2020-11-13 | 江苏金贸科技发展有限公司 | Straw desulfurized gypsum composite wall material and preparation method thereof |
| CN111875331A (en) * | 2020-07-30 | 2020-11-03 | 四川绵筑新材料有限公司 | High-imitation wood gypsum base plate and preparation method thereof |
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Application publication date: 20130306 |