CN101597937A - Retarded water-resistant gypsum block and preparation method thereof - Google Patents
Retarded water-resistant gypsum block and preparation method thereof Download PDFInfo
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- CN101597937A CN101597937A CNA200910102660XA CN200910102660A CN101597937A CN 101597937 A CN101597937 A CN 101597937A CN A200910102660X A CNA200910102660X A CN A200910102660XA CN 200910102660 A CN200910102660 A CN 200910102660A CN 101597937 A CN101597937 A CN 101597937A
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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 discloses a kind of retarded water-resistant gypsum block and preparation method thereof, made by the raw material of following weight ratio: powder gypsum 80-90%, flyash or blast-furnace cinder 5-15%, exciting agent 1-5%, water reducing agent 0.5-2.5%, water-solid ratio value are 0.3-0.4.The residue on sieve that material fineness reaches the 0.08mm sieve is not more than 5%.Raw material is added in the agitator tank by said ratio, after stirring, mixed slurry is cast in the moulding form, behind the demoulding freeze-day with constant temperature, obtain gypsum block with watering pump priming.Gypsum block of the present invention has slow setting, water-proofing performance, has reduced percent defective, reduces drying time, and energy consumes when reducing drying.
Description
Technical field
The present invention relates to the building material field field, relate in particular to a kind of gypsum block, also relate to its preparation method simultaneously.
Background technology
Present gypsum block is to be primary raw material with the semi-hydrated gypsum, stirs through adding water, and moulding by casting and demoulding drying are made the gypsum block goods.The production principle of gypsum block is the reaction of semi-hydrated gypsum and water, be reduced into two water and strengthen gypsum, dihydrate gypsum at the mould intercrystalline, solidify the formation gypsum block.The gypsum setting and harden is very fast, and its initial setting time, operable time had only 5-10min at 6-30min.Because its setting time is shorter; Cause in agitator tank or in watering the pump priming course of conveying on the one hand and solidifies, on the other hand in the manufacturing process of building block, the poor mobile performance of slip in mould, building block is easy to generate unfilled corner and long crackle, and the percent defective of product is higher.Therefore, can not satisfy the needs of gypsum material moulding and construction.
When gypsum block was produced, semi-hydrated gypsum was as main materials, and its theoretical aquation consumption only is 18.6%, yet for the service behaviour in guaranteeing to construct, actual water supply volume has but reached 65-80%.The existence of a large amount of excessive moistures in the gypsum block has reduced the intensity of gypsum plaster after the sclerosis significantly, has influenced the physical property of gypsum block.Owing to the mode of most of water with free water is stored in the capillary tube of gypsum block, free water was evaporated when gypsum block was dry, and bigger at the dry run consumption of calorie on the other hand, and drying time is longer.If gypsum block is used in the wet environment, its capillary hollow can absorb water again again, and along with the suction increase of gypsum block, intensity also will obviously reduce.Therefore, the gypsum block of handling without protection against the tide is not allow to use in humidity is bigger under construction the bathroom.
Mechanization and artificial production are mainly adopted in gypsum block.The above mode of production has all only been considered the time of setting of gypsum, designed productive capacity; But the production capacity of these modes of production is low, if enhance production capacities, needs increase equipment or factory building, and investment is big.The problem that solves the waterproof of gypsum block at present mainly is at gypsum block surface-coated or dipping hydrophobic substance, but in case defective appears in coated gypsum block surface or part, the gypsum that exposes will be by water-soluble erosion when running into water, thereby has reduced water resistance.And there is hydrophobic substance on the gypsum block surface, also is unfavorable for the building operations of gypsum block.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming and a kind of have slow setting, water-proofing performance are provided, reduced percent defective, reduce drying time, the retarded water-resistant gypsum block that energy consumes when reducing drying.
Another object of the present invention also is to provide the preparation method of this retarded water-resistant gypsum block.
A kind of retarded water-resistant gypsum block of the present invention is made by the raw material of following weight ratio:
Powder gypsum 80-90%, flyash or blast-furnace cinder 5-15%, exciting agent 1-5%, water reducing agent 0.5-2.5%, water-solid ratio value are 0.3-0.4.
Above-mentioned retarded water-resistant gypsum block, wherein: the residue on sieve that material fineness reaches the 0.08mm sieve is not more than 5%.
Above-mentioned retarded water-resistant gypsum block, wherein: exciting agent is alum, aluminum sulfate, potassium bichromate, calcium chloride, sodium carbonate, a kind of, two or more mixture in silicate of soda, the prodan.
Above-mentioned retarded water-resistant gypsum block, wherein: water reducing agent is lignin water reducing agent wood sodium, wooden calcium, wooden magnesium, naphthalene water reducer, melamine system water reducer, poly carboxylic acid series water reducer, a kind of, two or more mixture in the sulfamic acid based water reducer.
A kind of preparation method of retarded water-resistant gypsum block comprises: raw material is added in the agitator tank by said ratio, after stirring, with watering pump priming mixed slurry is cast in the moulding form, behind the demoulding freeze-day with constant temperature, obtain gypsum block.
The present invention compared with prior art, by such scheme as can be known, by adding water reducing agent, the ratio of water to material when making the gypsum batching descends, the degree of mobilization of gypsum increases, can greatly prolong the time of gypsum aquation system degree of mobilization steady section, prolong the time of the setting and hardening of gypsum simultaneously, satisfy the requirement of gypsum material moulding and construction, the unfilled corner and the long problem of crackle of gypsum block have been solved, reduced percent defective, reduced drying time, energy consumes when reducing drying.Simultaneously, water reducing agent has changed dihydrate gypsum crystal pattern and crystalline size, and the overlap joint compaction rate between the crystal obviously increases, and the crystallization contact point increases, and reduce in the cavity between the crystal, and water reducing agent significantly reduces the gypsum block void content.Inorganic raw material is exciting agent and flyash or blast-furnace cinder and dihydrate gypsum acting in conjunction, improves the closely knit intensity of hole of plastering.The gypsum block of preparation has slow setting, water-fast characteristic, has improved the physical property of gypsum block, has improved the production capacity of unit interval simultaneously, reduces production costs.
The specific embodiment
Embodiment 1
A kind of preparation method of gypsum block, its processing step is: at first with the land plaster of 600kg, the flyash of 33kg, the heavy altogether 17kg of each 8.5kg of silicate of soda and aluminum sulfate, agitator tank is evenly put in blend.Sodium lignin sulfonate 17kg in the lignin water reducing agent is dissolved in the 200kg water mixes, be poured onto in the agitator tank, start mixer simultaneously, stirred fast 2 minutes; With watering pump priming mixed slurry is cast in the building block mould, the initial setting time of building block is 80 minutes, and the gypsum after solidifying is built and certainly taken out from mould, will contain the gypsum block artificial drying of moisture at last or dry naturally to be finished product.Detect in the finished product building block, do not contain unfilled corner and surpass the building block that a place and crackle surpass 30mm, the average quality 11.7kg of building block, breaking load 6.2KN, coefficient of softening 0.74.
Embodiment 2
A kind of preparation method of gypsum block, its processing step is: at first with the land plaster of 550kg, the blast furnace cinder of 100kg, each 8.5kg of prodan, calcium chloride, alum and sodium sulphate is 34kg altogether, and agitator tank is evenly put in blend.The alkene maleate copolymer 3.5kg of poly carboxylic acid series water reducer is dissolved in the 275kg water mixes, be poured onto in the agitator tank, start mixer simultaneously, stirred fast 2 minutes; With watering pump priming mixed slurry is cast in the building block mould, the initial setting time of building block is 110 minutes, and the gypsum block after solidifying is taken out from mould, will contain the gypsum block artificial drying of moisture at last or dry naturally to be finished product.Detect in the finished product building block, do not contain unfilled corner and surpass the building block that a place and crackle surpass 30mm, the average quality 12.4kg of building block, breaking load 6.0KN, coefficient of softening 0.65.
Embodiment 3
A kind of preparation method of gypsum block, its processing step is: at first with the land plaster of 570kg, the blast furnace cinder of 103kg, each 3.4kg of alum and sodium carbonate mixture is 6.8kg altogether, and agitator tank is evenly put in blend.With the calcium lignosulfonate in the lignin water reducing agent and each 3.4kg of magnesium lignosulfonate altogether 6.8kg be dissolved in the 240kg water and mix, be poured onto in the agitator tank, start mixer simultaneously, stirred fast 2 minutes; With watering pump priming mixed slurry is cast in the building block mould, the initial setting time of building block is 90 minutes, and the gypsum block after solidifying is taken out from mould, will contain the gypsum block artificial drying of moisture at last or dry naturally to be finished product.Detect in the finished product building block, do not contain unfilled corner and surpass the building block that a place and crackle surpass 30mm, the average quality 11.9kg of building block, breaking load 6.5KN, coefficient of softening 0.72.
Comparative example:
The preparation method of existing gypsum block: at first agitator tank is evenly put in land plaster, the flyash of 35kg, the blend of 300kg.200kg water is poured onto in the agitator tank, starts mixer simultaneously, stirred fast 2 minutes; With watering pump priming mixed slurry is cast in the building block mould, the initial setting time of building block is 9 minutes, and the gypsum block after solidifying is taken out from mould, will contain the gypsum block artificial drying of moisture at last or dry naturally to be finished product.Detect in the finished product building block, have unfilled corner to surpass 2 of the building blocks at a place, crackle surpasses 1 of the building block of 30mm, the average quality 14.7kg of building block, breaking load 3.2KN, coefficient of softening 0.36.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (5)
1, a kind of retarded water-resistant gypsum block is made by the raw material of following weight ratio:
Powder gypsum 80-90%, flyash or blast-furnace cinder 5-15%, exciting agent 1-5%, water reducing agent 0.5-2.5%, water-solid ratio value are 0.3-0.4.
2, retarded water-resistant gypsum block as claimed in claim 1, wherein: the residue on sieve that material fineness reaches the 0.08mm sieve is not more than 5%.
3, retarded water-resistant gypsum block as claimed in claim 1 or 2, wherein: exciting agent is alum, aluminum sulfate, potassium bichromate, calcium chloride, sodium carbonate, a kind of, two or more mixture in silicate of soda, the prodan.
4, retarded water-resistant gypsum block as claimed in claim 3, wherein: water reducing agent is lignin water reducing agent wood sodium, wooden calcium, wooden magnesium, naphthalene water reducer, melamine system water reducer, poly carboxylic acid series water reducer, a kind of, two or more mixture in the sulfamic acid based water reducer.
5, the preparation method of retarded water-resistant gypsum block as claimed in claim 4 comprises: raw material is added in the agitator tank by said ratio, after stirring, with watering pump priming mixed slurry is cast in the moulding form, behind the demoulding freeze-day with constant temperature, obtain gypsum block.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200910102660XA CN101597937A (en) | 2009-07-07 | 2009-07-07 | Retarded water-resistant gypsum block and preparation method thereof |
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| CNA200910102660XA CN101597937A (en) | 2009-07-07 | 2009-07-07 | Retarded water-resistant gypsum block and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941232A (en) * | 2010-09-14 | 2011-01-12 | 湖南安雅达建材科技有限公司 | Gypsum-based gel material pouring method and device |
| CN102432261A (en) * | 2011-09-23 | 2012-05-02 | 湖北格林森新型建材科技有限公司 | Gypsum marble and its preparation method |
| CN103396080A (en) * | 2013-08-23 | 2013-11-20 | 张清 | Wall brick manufactured by utilizing industrial residues and manufacturing method of wall brick |
| CN104496390A (en) * | 2015-01-14 | 2015-04-08 | 贵州友仁建材科技开发有限公司 | Ardealite modified and strengthened damp-proof gypsum block |
| CN105152561A (en) * | 2015-08-07 | 2015-12-16 | 武汉理工大学 | Method for preparing water reducer of gypsum cementitious material by using pulp waste liquid |
| CN105985084A (en) * | 2015-01-27 | 2016-10-05 | 安徽森科新材料有限公司 | Gypsum hollow block and semi-dry production method of same |
| CN106145728A (en) * | 2016-06-29 | 2016-11-23 | 颜红英 | Modified cement formula |
| CN107445568A (en) * | 2017-07-07 | 2017-12-08 | 南通绿洲节能环保产品有限公司 | A kind of gypsum block and its preparation technology |
-
2009
- 2009-07-07 CN CNA200910102660XA patent/CN101597937A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941232A (en) * | 2010-09-14 | 2011-01-12 | 湖南安雅达建材科技有限公司 | Gypsum-based gel material pouring method and device |
| CN102432261A (en) * | 2011-09-23 | 2012-05-02 | 湖北格林森新型建材科技有限公司 | Gypsum marble and its preparation method |
| CN102432261B (en) * | 2011-09-23 | 2013-08-07 | 湖北格林森新型建材科技有限公司 | Gypsum marble and its preparation method |
| CN103396080A (en) * | 2013-08-23 | 2013-11-20 | 张清 | Wall brick manufactured by utilizing industrial residues and manufacturing method of wall brick |
| CN103396080B (en) * | 2013-08-23 | 2015-10-21 | 张清 | A kind of wall body brick utilizing industrial residue to make and preparation method thereof |
| CN104496390A (en) * | 2015-01-14 | 2015-04-08 | 贵州友仁建材科技开发有限公司 | Ardealite modified and strengthened damp-proof gypsum block |
| CN105985084A (en) * | 2015-01-27 | 2016-10-05 | 安徽森科新材料有限公司 | Gypsum hollow block and semi-dry production method of same |
| CN105152561A (en) * | 2015-08-07 | 2015-12-16 | 武汉理工大学 | Method for preparing water reducer of gypsum cementitious material by using pulp waste liquid |
| CN105152561B (en) * | 2015-08-07 | 2017-12-29 | 武汉理工大学 | The method that gypsum plaster water reducer is prepared using spent pulping liquor |
| CN106145728A (en) * | 2016-06-29 | 2016-11-23 | 颜红英 | Modified cement formula |
| CN107445568A (en) * | 2017-07-07 | 2017-12-08 | 南通绿洲节能环保产品有限公司 | A kind of gypsum block and its preparation technology |
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Open date: 20091209 |