CN102815915A - Modified phosphorus gypsum consolidating layer material for road and preparation method thereof - Google Patents
Modified phosphorus gypsum consolidating layer material for road and preparation method thereof Download PDFInfo
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- CN102815915A CN102815915A CN2012102737032A CN201210273703A CN102815915A CN 102815915 A CN102815915 A CN 102815915A CN 2012102737032 A CN2012102737032 A CN 2012102737032A CN 201210273703 A CN201210273703 A CN 201210273703A CN 102815915 A CN102815915 A CN 102815915A
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Abstract
The invention discloses a modified phosphorus gypsum consolidating layer material for road and a preparation method of the modified phosphorus gypsum consolidating layer material. The material is prepared from 30-50% of phosphorus gypsum, 10-30% of modifier, 30-60% of sand and stone, and 5-50% of water by mixing the phosphorus gypsum and modifier for 1-3 min, mixing with sand and stone for 1-2 min, adding water, and stirring for 2-3 min. The material has good water stability and little expansion amount. In absence of road pavement, base course and subgrade adopting the inventive material as filler still have good bearing capacity; and no obvious rut will form on base course surface to cause influence on driving safety and comfort. The modified phosphorus gypsum consolidating layer material extends comprehensive application routes of phosphorus gypsum as an industrial waste, and improves comprehensive utilization of phosphorus gypsum.
Description
Technical field
The present invention relates to a kind of highway with modified ardealite stabilizing layer material and preparation method thereof, belong to the highway construction field of materials.
Background technology
Phosphogypsum is a sub product of producing phosphoric acid with sulfuric acid extraction phosphorus ore, and staple is terra alba, belongs to trade waste.Along with the fast development of China's phosphate fertilizer industry, the generation of phosphogypsum increases rapidly year by year.China's phosphogypsum generation in 2009 mainly concentrates on the southwest up to about 5,000 ten thousand tons, and other areas are less relatively.By the end of the year 2011, phosphogypsum accumulation volume of cargo in storage is about 300,000,000 tons.Phosphogypsum is stored up in a large number not only can occupy valuable land resources, and phosphogypsum also can pollute atmosphere, underground water, soil via wind erosion, weathering simultaneously.In addition, if human body Long contact time phosphogypsum may cause pathology or death.
Existing resourceization utilizes mode mainly to comprise to be used for Cement industry, produce industrial chemicals and gypsum building material product, as roadbed or industrial filler, improve the soil etc.But because contained Vanadium Pentoxide in FLAKES and fluorine influences the big of ten minutes to recycling in the phosphogypsum, China's phosphogypsum comprehensive utilization ratio was merely about 20% in 2010.
Go to consider that pure phosphogypsum is not suitable to be used as roadbed filling from the angle that phosphogypsum is used for roadbed filling, because pure phosphogypsum has stronger wetting ability, water stability is poor.The water ratio of phosphogypsum generally reaches 20%-25%, because its water ratio is high, viscosity is strong, in loading, lifting, course of conveying, very easily sticks on the various device, causes buildup to stop up, and influences normally carrying out of production process.At present domestic many about modification method of ardealite research, so that meeting reality, it produces needs comprising in phosphogypsum, adding properties-correcting agent.
Application number is 2012102079216 one Chinese patent application file; A kind of method of manufacture of compound phosphorus slag powder is disclosed; Can improve the volume of comprehensive utilization of phosphorus slag; Intensity in early stage when being used as the gelling material place of cement by its compound phosphorus slag powder that produces is unaffected, and its performance can reach the cement standard requirement.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art; Provide a kind of highway with modified ardealite stabilizing layer material and preparation method thereof; It is with the main raw of phosphogypsum as the highway stabilizing layer; Change the performance that phosphogypsum is met water softening through adding a certain amount of properties-correcting agent, make itself and other material fuse each other, solidify the execution conditions that reach the highway stabilizing layer, reach the index of correlation requirement of highway engineering like indexs such as weather resistance, resistance to compression and flexural strengths.
The objective of the invention is to realize through following technical scheme:
A kind of highway is with modified ardealite stabilizing layer material, and the main proportion of composing of its composition is: 30～50 parts of phosphogypsums, 10～30 parts of properties-correcting agent, 30～60 parts of sandstones, 5～50 parts in water; Said properties-correcting agent is earlier thick phosphorus slag and phosphogypsum to be dried respectively, mixes by weight 6:1:3 with siliceous material then, through the compound phosphorus slag powder of grinding, the sieve material obtains.Siliceous material is meant blast-furnace slag, siliceous shale or cement clinker.
Highway is according to the composition proportion of composing with modified ardealite stabilizing layer preparation methods, and phosphogypsum and properties-correcting agent are mixed the gained material after 1～3 minute, mixes 1～2 minute with sandstone, adds water at last and stirs 2～3 minutes.
Below the modified ardealite stabilizing layer material among employing the present invention is applied to the next further elaboration of the related check report beneficial effect of the present invention of highway subgrade filler:
1. the survey report of provincial building material product quality surveillance mechanism is seen table 1.
Table 1 building material product quality test report
2. table 2 is seen in the provincial building test mechanism report of in the phosphogypsum road test engineering modified ardealite highway material being carried out soil sample test.
Table 2 soil sample test report
3.20 200,000 tons of coarse whiting plant area highways in ten thousand tons of coarse whiting plant area highways (test) engineering (the steady layer of water) flexure laboratory report is seen table 3.
The report of table 3 deflection test
4. sum up: the modified ardealite stabilizing layer material water stability of gained is better behind the adding properties-correcting agent in phosphogypsum, and after the modification, swell increment is little.In unconfined compressive strenght test, compactness (93,95,98) the steady index variation rule of water down is quite consistent.Modified ardealite stabilizing layer material is from the angle of CBR value, and its CBR value has all reached the requirement of highway to filler CBR value; Phosphogypsum compound after modification is handled has good water stability, and its CBR value satisfies the requirement of roadbed filling to the CBR value, and is suitable to basic unit's filler.The dynamicstress of road structure and static stress and corresponding load are linear, and quiet dynamicstress is power function with deep diffusion and reduces.Road surface interbed (modified ardealite stabilizing layer) rebound deflection value is 23.3 * 10
-2㎜.
The invention has the beneficial effects as follows: modified ardealite stabilizing layer material has good water stability, and swell increment is little; Under the situation on no road surface, adopt modified ardealite stabilizing layer material still to have good supporting capacity as the basic unit and the roadbed of filler, substrate surface can not produce especially significantly rut, can be to the safety and comfortable not the impacting of driving; The present invention has expanded the comprehensive Utilization Ways of this trade waste of phosphogypsum, has improved the comprehensive utilization of phosphogypsum amount.
Embodiment
Embodiment 1:
(1) preparation properties-correcting agent:
Thick phosphorus slag is placed the revolving roll dryer, and it is 36 rev/mins that rotating speed is set to, and 100 ℃ of bake out temperatures are dried to water cut≤2%; Phosphogypsum is placed the revolving roll dryer, and rotating speed is set to 36 rev/mins, and 70 ℃ of bake out temperatures dry phosphogypsum to water cut≤10%.Get thick phosphorus slag, phosphogypsum, siliceous shale, take by weighing and mix by weight 6:1:3 through belt conveyor with weighing balance.Compound is put into grinding machine, grind to form and reach 325 purpose powder attitude materials, with revolving the sieve material and fineness detection that the sieve that shakes carries out mixture, its screen over-size is 5% again.
(2) preparation modified ardealite stabilizing layer material:
Get phosphogypsum 30kg, properties-correcting agent 10kg, sandstone 30kg, water 5kg, phosphogypsum and properties-correcting agent are mixed the gained material after 1～3 minute, mixed 1～2 minute, add water at last and stirred 2～3 minutes, get final product with sandstone.
Embodiment 2:
(1) preparation properties-correcting agent:
Thick phosphorus slag is placed the revolving roll dryer, and it is 36 rev/mins that rotating speed is set to, and 200 ℃ of bake out temperatures are dried to water cut≤2%; Phosphogypsum is placed the revolving roll dryer, and rotating speed is set to 36 rev/mins, and 75 ℃ of bake out temperatures dry phosphogypsum to water cut≤10%.Get thick phosphorus slag, phosphogypsum, cement clinker, take by weighing and mix by weight 6:1:3 through belt conveyor with weighing balance.Compound is put into grinding machine, grind to form and reach 325 purpose powder attitude materials, with revolving the sieve material and fineness detection that the sieve that shakes carries out mixture, its screen over-size is 10% again.
(2) preparation modified ardealite stabilizing layer material:
Get phosphogypsum 50kg, properties-correcting agent 30kg, sandstone 60kg, water 50kg, phosphogypsum and properties-correcting agent are mixed the gained material after 1～3 minute, mixed 1～2 minute, add water at last and stirred 2～3 minutes, get final product with sandstone.
Embodiment 3:
(1) preparation properties-correcting agent:
Thick phosphorus slag is placed the revolving roll dryer, and it is 36 rev/mins that rotating speed is set to, and 250 ℃ of bake out temperatures are dried to water cut≤2%; Phosphogypsum is placed the revolving roll dryer, and rotating speed is set to 36 rev/mins, and 80 ℃ of bake out temperatures dry phosphogypsum to water cut≤10%.Get thick phosphorus slag, unslaked lime, siliceous shale, take by weighing and mix by weight 6:1:3 through belt conveyor with weighing balance.Compound is put into grinding machine, grind to form and reach 325 purpose powder attitude materials, with revolving the sieve material and fineness detection that the sieve that shakes carries out mixture, its screen over-size is 15% again.
(2) preparation modified ardealite stabilizing layer material:
Get phosphogypsum 40kg, properties-correcting agent 20kg, sandstone 45kg, water 30kg, phosphogypsum and properties-correcting agent are mixed the gained material after 1～3 minute, mixed 1～2 minute, add water at last and stirred 2～3 minutes, get final product with sandstone.
Claims (2)
1. a highway is characterized in that with modified ardealite stabilizing layer material: the main proportion of composing of its composition is: 30～50 parts of phosphogypsums, 10～30 parts of properties-correcting agent, 30～60 parts of sandstones, 5～50 parts in water; Said properties-correcting agent is earlier thick phosphorus slag and phosphogypsum to be dried respectively, mixes by weight 6:1:3 with siliceous material then, through the compound phosphorus slag powder of grinding, the sieve material obtains; Siliceous material is meant blast-furnace slag, siliceous shale or cement clinker.
2. one kind prepares like each described highway among the claim 1-3 with modified ardealite stabilizing layer preparation methods; It is characterized in that: it is according to the composition proportion of composing; Phosphogypsum and properties-correcting agent are mixed the gained material after 1～3 minute; Mixed 1～2 minute with sandstone, add water at last and stirred 2～3 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210273703.2A CN102815915B (en) | 2012-08-01 | 2012-08-01 | Modified phosphorus gypsum consolidating layer material for road and preparation method thereof |
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| CN201210273703.2A CN102815915B (en) | 2012-08-01 | 2012-08-01 | Modified phosphorus gypsum consolidating layer material for road and preparation method thereof |
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| CN102815915B CN102815915B (en) | 2014-05-07 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696398A (en) * | 2013-12-02 | 2014-04-02 | 贵州开磷（集团）有限责任公司 | Construction method for land reclamation with modified phosphorous gypsum material |
| CN104909698A (en) * | 2015-06-09 | 2015-09-16 | 武汉华中科大土木工程检测中心 | Modified phosphogypsum highway subgrade filler and preparation method thereof |
| CN106337347A (en) * | 2016-10-26 | 2017-01-18 | 中国科学院地质与地球物理研究所 | Construction method of ardealite improved roadbed |
| CN109467379A (en) * | 2019-01-11 | 2019-03-15 | 中化重庆涪陵化工有限公司 | The laying method of ardealite roadbed material and preparation method thereof and ardealite roadbed |
| CN109704712A (en) * | 2019-03-13 | 2019-05-03 | 中南大学 | A method of filling phosphorous gypsum process phosphorus, which is reduced, using Modified Quartz Sand pollutes |
| CN109956730A (en) * | 2019-04-24 | 2019-07-02 | 山东佳运环保科技有限公司 | Modified gypsum is native and its as the application and construction method in basic engineered packings |
| CN113668309A (en) * | 2021-08-31 | 2021-11-19 | 深圳市颐泰中和科技有限公司 | Road construction method |
-
2012
- 2012-08-01 CN CN201210273703.2A patent/CN102815915B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 龙秀才等: "《磷石膏充填材料及其配比试验研究》", 《化工矿物与加工》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696398A (en) * | 2013-12-02 | 2014-04-02 | 贵州开磷（集团）有限责任公司 | Construction method for land reclamation with modified phosphorous gypsum material |
| CN103696398B (en) * | 2013-12-02 | 2016-03-16 | 贵州开磷集团股份有限公司 | The construction method of a kind of modified ardealite material marine reclamation land |
| CN104909698A (en) * | 2015-06-09 | 2015-09-16 | 武汉华中科大土木工程检测中心 | Modified phosphogypsum highway subgrade filler and preparation method thereof |
| CN106337347A (en) * | 2016-10-26 | 2017-01-18 | 中国科学院地质与地球物理研究所 | Construction method of ardealite improved roadbed |
| CN109467379A (en) * | 2019-01-11 | 2019-03-15 | 中化重庆涪陵化工有限公司 | The laying method of ardealite roadbed material and preparation method thereof and ardealite roadbed |
| CN109704712A (en) * | 2019-03-13 | 2019-05-03 | 中南大学 | A method of filling phosphorous gypsum process phosphorus, which is reduced, using Modified Quartz Sand pollutes |
| CN109704712B (en) * | 2019-03-13 | 2020-02-18 | 中南大学 | Method for reducing phosphorus pollution in phosphogypsum filling process by using modified quartz sand |
| CN109956730A (en) * | 2019-04-24 | 2019-07-02 | 山东佳运环保科技有限公司 | Modified gypsum is native and its as the application and construction method in basic engineered packings |
| CN113668309A (en) * | 2021-08-31 | 2021-11-19 | 深圳市颐泰中和科技有限公司 | Road construction method |
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| CN102815915B (en) | 2014-05-07 |
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Owner name: GUIZHOU KAILIN GROUP CO., LTD. Free format text: FORMER NAME: KAILIN (GROUP) CO., LTD., GUIZHOU |
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Address after: No. 237 Jinyang City Kailin Lake District Road 550009 Guizhou city of Guiyang Province Patentee after: GUIZHOU KAILIN GROUP Co.,Ltd. Address before: 550302, 12 floor, Haitian building, 203 Zhonghua South Road, Guizhou, Guiyang Patentee before: Guizhou Kailin (Group) Co.,Ltd. |
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Granted publication date: 20140507 Termination date: 20210801 |