CN102643065B - Phosphogypsum self-leveling material - Google Patents
Phosphogypsum self-leveling material Download PDFInfo
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- CN102643065B CN102643065B CN 201110039548 CN201110039548A CN102643065B CN 102643065 B CN102643065 B CN 102643065B CN 201110039548 CN201110039548 CN 201110039548 CN 201110039548 A CN201110039548 A CN 201110039548A CN 102643065 B CN102643065 B CN 102643065B
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- leveling material
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Abstract
The invention relates to a gypsum-based self-leveling material prepared by phosphogypsum, which comprises the following components by weight: 10-30% of modified phosphogypsum, 1-5% of cement, 30-60% of semi-hydrated gypsum, 0-15% of anhydrite, 2.0-4.0% of redispersible emulsion powder, 0.03-0.06% of water retaining agents, 0.10-0.30% of antifoaming agents, 0.2-1.0% of water reducing agents, 0.03-0.12% of retarders, and 20-30% of fine sand. According to the invention of the gypsum-based self-leveling material prepared by using phosphogypsum as a raw material, waste phosphogypsum can be made full use of; severe pollution of soil, water systems and atmosphere and land resource waste caused by phosphogypsum exposed stacking and discharging into the sea are reduced; the cost for the gypsum-based self-leveling material is reduced; and the prepared the gypsum-based self-leveling material has the characteristics of high strength, good fluidity, and low shrinkage deformation.
Description
Technical field
The invention belongs to building material technical field, relate to a kind of gypsum base self-leveling material, particularly adopt the gypsum base self-leveling material of phosphogypsum preparation.
Background technology
Phosphogypsum is a kind of of industry by-product gypsum, the waste residue that discharges when being phosphate fertilizer plant's manufacturing phosphoric acid.3.75 tons of phosphogypsums of 1 ton of phosphate fertilizer average generation of every production.The discharging of China's phosphogypsum in recent years increases day by day; adopt air storage and impouring sea to handle the acid pulverulent material of this band at present mostly; the obvious like this severe contamination that can cause soil, water system, atmosphere; bring huge pressure to environment protection, and very wasted land resources.At present, about 2.6 hundred million t of world's phosphoric acid by wet process gross annual output amount, about 1.5 hundred million t of by-product phosphogypsum, utilization ratio only 4.3% ~ 4.6%.Estimate that China will reach 1.3 hundred million t to phosphate fertilizer demand in 2015, the phosphogypsum annual emissions will be above 2,000 ten thousand t when the time comes, and present utilization ratio only is 2% ~ 3%.The placement of phosphogypsum has not only taken a large amount of soils, and causes environmental pollution.
Self-leveling material be a kind of be base-material with the gelling material, add the new terrestrial material that is used for the ground self-leveling of various admixture modifications.Difference according to gelling material can be divided into epoxy group(ing) self-leveling material, cement-based self-leveling material and gypsum base self-leveling material.Chinese patent 200510120515.6, Chinese patent 200510072440.9 is the gypsum base self-leveling material, is the gypsum breeze but it adopts, then can't satisfy the requirement of gypsum base self-leveling material as adopting phosphogypsum by its proportioning.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, it is the gypsum base self-leveling material of feedstock production that a kind of phosphogypsum that adopts is provided, the severe contamination that bring in the air storage of corresponding minimizing phosphogypsum and impouring sea and waste land resources, with the cost of comprehensive utilization phosphogypsum, reduction gypsum base self-leveling material, and the gypsum base self-leveling material of preparing has the characteristics of intensity height, good fluidity, low shrinkage and deformation.
Technical scheme of the present invention is: a kind of phosphogypsum self-leveling material is characterized in that the each component weight percent is as follows:
Modified ardealite 10～30%,
Cement 1～5%,
Semi-hydrated gypsum 30～60%,
Anhydrite 0～15%,
Redispersable latex powder 2.0～4.0%,
Water-holding agent 0.03～0.06%,
Defoamer 0.10～0.30%,
Water reducer 0.2～1.0%,
Retardant 0.03～0.12%,
Fine sand 20～30%;
Wherein: modified ardealite is that phosphogypsum was dewatered 100～300 minutes under 170 ℃ ± 10 ℃ temperature, and grinding becomes the following fine powder of 0.3mm.
Can to adopt ethene and vinyl acetate between to for plastic be the polymer powder of monomer to redispersable latex powder in the solution of the present invention.
The control of fine sand globule size is at 70～140 orders in the solution of the present invention.
Semi-hydrated gypsum can adopt αBan Shuishigao or β semi-hydrated gypsum in the solution of the present invention.
High efficiency water reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid in the solution of the present invention.
Water-holding agent can adopt ether of cellulose in the solution of the present invention.
Defoamer is nonionogenic tenside in the solution of the present invention.
Retardant is citric acid or gypsum base high-efficient retarder in the solution of the present invention.
Advantage of the present invention: it is the gypsum base self-leveling material of feedstock production that the present invention adopts phosphogypsum, can take full advantage of the waste phosphogypsum, reduce severe contamination and the waste land resources to soil, water system, atmosphere that brings in phosphogypsum air storage and impouring sea, reduce the cost of gypsum base self-leveling material simultaneously, the gypsum base self-leveling material of preparing has the characteristics of intensity height, good fluidity, low shrinkage and deformation.
Embodiment
The embodiment of the invention 1: the phosphogypsum self-leveling material, the each component weight percent is as follows:
Modified ardealite 15%,
White cement 3%,
αBan Shuishigao 55%,
Redispersable latex powder 2.5%,
Nonionogenic tenside 0.15%,
High-efficiency water-reducing agent of poly-carboxylic acid 0.9%,
Ether of cellulose 0.05%,
Citric acid 0.05%,
Quartz sand 23.35%;
Wherein: modified ardealite is that phosphogypsum was dewatered 150 minutes under 170 ℃ ± 10 ℃ temperature, and grinding becomes 0.3mm and following fine powder; The control of quartz sand size size is at 70～140 orders.Weight percent by afore mentioned rules prepares self-leveling material, by constructing behind water cement ratio 0.275 poach.The fundamental property of this material is: 30min degree of mobilization loss 2mm, presetting period 3.5h, final setting time 5.1h, 24h folding strength 3.0MPa, 24h ultimate compression strength 10.1MPa, over dry folding strength 7.9MPa, over dry ultimate compression strength 21.2MPa, over dry tensile bond strength 1.5MPa, shrinking percentage 0.032%.
Embodiment 2: the phosphogypsum self-leveling material, and the each component weight percent is as follows:
Modified ardealite 20%,
The P.O.42.5R(ordinary Portland cement) 3%,
β semi-hydrated gypsum 40%,
Anhydrite 10%,
Redispersable latex powder 3.5%,
Defoamer 0.2%,
High-efficiency water-reducing agent of poly-carboxylic acid 0.4%,
Ether of cellulose 0.05%,
Citric acid 0.1%,
Dry sand 22.75%;
Wherein: modified ardealite is that phosphogypsum was dewatered 250 minutes under 170 ℃ ± 10 ℃ temperature, and grinding becomes 0.3mm and following fine powder; The control of quartz sand size size is at 70～140 orders.Weight percent by afore mentioned rules prepares self-leveling material, by constructing behind water cement ratio 0.235 poach.The fundamental property of this prescription is: 30min degree of mobilization loss 2mm, presetting period 2.0h, final setting time 3.9h, 24h folding strength 2.8MPa, 24h ultimate compression strength 12.9MPa, over dry folding strength 8.7MPa, over dry ultimate compression strength 22.1MPa, over dry tensile bond strength 1.4MPa, shrinking percentage 0.025%.
Claims (8)
1. a kind of phosphogypsum self-leveling material is characterized in that the each component weight percent is as follows:
Modified ardealite 10～30%,
Cement 1～5%,
Semi-hydrated gypsum 30～60%,
Anhydrite 0～15%,
Redispersable latex powder 2.0～4.0%,
Water-holding agent 0.03～0.06%,
Defoamer 0.10～0.30%,
Water reducer 0.2～1.0%,
Retardant 0.03～0.12%,
Fine sand 20～30%;
Wherein: modified ardealite is that phosphogypsum was dewatered 100～300 minutes under 170 ℃ ± 10 ℃ temperature, and grinding becomes the following fine powder of 0.3mm.
2. phosphogypsum self-leveling material according to claim 1 is characterized in that redispersable latex powder is that ethene and vinyl acetate between to for plastic are the polymer powder of monomer.
3. phosphogypsum self-leveling material according to claim 1 is characterized in that the control of fine sand globule size is at 70～140 orders.
4. phosphogypsum self-leveling material according to claim 1 is characterized in that semi-hydrated gypsum is αBan Shuishigao or β semi-hydrated gypsum.
5. phosphogypsum self-leveling material according to claim 1 is characterized in that water reducer is high-efficiency water-reducing agent of poly-carboxylic acid.
6. phosphogypsum self-leveling material according to claim 1 is characterized in that water-holding agent is ether of cellulose.
7. phosphogypsum self-leveling material according to claim 1 is characterized in that defoamer is nonionogenic tenside.
8. phosphogypsum self-leveling material according to claim 1 is characterized in that retardant is citric acid or gypsum base high-efficient retarder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110039548 CN102643065B (en) | 2011-02-17 | 2011-02-17 | Phosphogypsum self-leveling material |
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| CN 201110039548 CN102643065B (en) | 2011-02-17 | 2011-02-17 | Phosphogypsum self-leveling material |
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| CN102643065A CN102643065A (en) | 2012-08-22 |
| CN102643065B true CN102643065B (en) | 2013-07-10 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102995791B (en) * | 2012-12-06 | 2015-11-11 | 福建建工建材科技开发有限公司 | A kind of steel work foamed gypsum combined wall |
| CN104176957B (en) * | 2014-08-10 | 2016-04-13 | 安徽锦洋氟化学有限公司 | A kind of method of redispersable latex powder modification fluorgypsum |
| CN105482504A (en) * | 2015-11-29 | 2016-04-13 | 贵州开磷集团股份有限公司 | Method for preparing PVC filling material from phosphogypsum as raw material |
| 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 |
| CN107512894A (en) * | 2016-06-16 | 2017-12-26 | 苏州市兴邦化学建材有限公司 | A kind of high-strength crack resistance type coloured plaster based self-leveling material and preparation method thereof |
| CN106699094B (en) * | 2016-12-27 | 2018-12-04 | 贵州砂浆博士科技有限公司 | A kind of building decoration engineering ardealite based self-leveling material |
| CN108117361B (en) * | 2018-01-05 | 2020-01-31 | 成都上筑建材有限公司 | Water-resistant phosphogypsum self-leveling material |
| CN108129122A (en) * | 2018-01-16 | 2018-06-08 | 四川华邦保和涂料有限公司 | A kind of preparation method of phosphorus paring stone cream base lightweight gravity flowing levelling mortar |
| CN110627462A (en) * | 2018-06-22 | 2019-12-31 | 北新集团建材股份有限公司 | Gypsum self-leveling mortar and preparation method thereof |
| CN109516755A (en) * | 2018-12-27 | 2019-03-26 | 河南强耐新材股份有限公司 | A kind of dedicated gypsum based self-leveling mortar of floor heating backfill |
| CN111606673B (en) * | 2019-06-21 | 2022-05-13 | 中建材创新科技研究院有限公司 | Phosphogypsum heat-preservation self-leveling material and preparation method thereof |
| CN111943627A (en) * | 2020-08-26 | 2020-11-17 | 贵阳森蓝环保建材有限公司 | Beta phosphogypsum-based self-leveling mortar and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100390096C (en) * | 2005-05-11 | 2008-05-28 | 安徽恒泰非金属材料科技有限责任公司 | Gypsum-base self-flatting ground making level material and preparation process thereof |
| CN101054284B (en) * | 2007-05-25 | 2010-12-01 | 浙江大学 | Desulfurated gypsum self-leveling material and preparation method thereof |
| CN101302029A (en) * | 2008-06-26 | 2008-11-12 | 武汉科技大学 | Method for preparing alpha-hemihydrate gypsum with desulfurated gypsum |
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