CN104909695A - Phosphogypsum water hard road base, road base material and preparation method thereof - Google Patents
Phosphogypsum water hard road base, road base material and preparation method thereof Download PDFInfo
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- CN104909695A CN104909695A CN201510287161.8A CN201510287161A CN104909695A CN 104909695 A CN104909695 A CN 104909695A CN 201510287161 A CN201510287161 A CN 201510287161A CN 104909695 A CN104909695 A CN 104909695A
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Abstract
The invention discloses a phosphogypsum water hard road base, a road base material and a preparation method thereof, relating to the field of road engineering construction. The preparation method of the road base material comprises the following steps: weighing 85-92 percent of phosphogypsum and 15-8 percent of ordinary portland cement, uniformly mixing and stirring, thereby obtaining a preliminary mixture; weighing 99.7-99.95 percent of preliminary mixture and 0.3-0.05 percent of a phosphogypsum water hard curing agent, uniformly mixing and stirring, thereby obtaining a premix; controlling the moisture content of the premix to be 14-18 percent, thereby obtaining a base material, wherein the phosphogypsum water hard curing agent is prepared by mixing the following components in percentage by mass: 40-60 percent of elastic styrene-acrylic emulsion, 30-20 percent of nanometer alumina sol and 30-20 percent of nanometer silica sol. The road base is prepared from the road base material according to a standard road base construction method. The road base material is produced by utilizing phosphogypsum, the environmental pollution is reduced, and wastes are changed into valuable materials; and moreover, the formed road base is high in crack resistance, difficult to corrode and long in service life.
Description
Technical field
The present invention relates to road project field, be specifically related to a kind of phosphogypsum hydraulicity roadbase, road basement material and preparation method thereof.
Background technology
The solid waste that phosphogypsum gives off when being and producing phosphate fertilizer, phosphoric acid, often produce 1t phosphoric acid and about produce 4.5-5t phosphogypsum, China has a large amount of phosphogypsum output every year.Phosphogypsum has following characteristic: phosphogypsum is a kind of powder material, does not almost have plasticity-; Remaining in phosphogypsum have phosphoric acid, sulfuric acid and hydrofluoric acid, and it is a kind of acidic by-products (pH<3); Containing the free water of 25% ~ 30% in phosphogypsum, the vertical permeability coefficient of phosphogypsum is 2 × 10
-5~ 1 × 10
-3.At present, the effective rate of utilization of China's phosphogypsum is less than 10%, the phosphogypsum of minute quantity is only had to be utilized production material of construction, the phosphogypsum of all the other enormous amount is stacked as solid slag, stack phosphogypsum and not only take a large amount of soil, and the harmful heavy metal chemical substance such as the arsenic contained in phosphogypsum, cadmium, mercury is to environment.
Traditional road base material comprises cement stabilized soil, lime stabilized soil and two-ash broken stones.In cement stabilized soil, cement is as a kind of hydraulic material, meet aquatic products rubber body, these colloids cannot form Unified Global in soil, and understand structure and the link of spoiled soil itself, cause a large amount of unstable spaces, these spaces are under the invasion of water and the change of temperature, can become very fragile, the roadbase that therefore cement stabilized soil is formed very easily ftractures, and splitting resistance is poor.In lime stabilized soil, lime is a kind of air-setting material, and its end product is calcium carbonate, the solubleness of calcium carbonate is far longer than Calucium Silicate powder and other silicate, and therefore, the road matrix that lime stabilized soil is formed is under the effect of water, constantly can pass, easily corrode; And poor toughness own, fragility are strong, temperature is lower, is more easily destroyed.Two-ash broken stones is in pellet, mix appropriate lime and flyash, and wherein lime and flyash are consolidating material, and pellet plays skeleton function.The roadbase that two-ash broken stones is formed belongs to semi-rigid type base, has the obvious hydraulicity, latent, but pellet and lime, flyash is once combine, namely inside stop chemical reaction, the road matrix rigidity formed is excessive, and easily ftracture by temperature and humidity affects, splitting resistance is poor.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of phosphogypsum hydraulicity roadbase, road basement material and preparation method thereof, utilize phosphogypsum to produce road basement material, reduce the pollution to environment, and turn waste into wealth; Formed roadbase splitting resistance by force, not perishable, long service life.
For reaching above object, the technical scheme that the present invention takes is: a kind of preparation method of phosphogypsum hydraulicity road basement material, comprises the following steps:
A. ardealite innocent process: by percentage to the quality, takes the phosphogypsum of 85% ~ 92%, the ordinary portland cement of 15% ~ 8%, mixing and stirring, obtains just batch mixing;
B. water hardening process: by percentage to the quality, take the first batch mixing of 99.7% ~ 99.95%, 0.3% ~ 0.05% phosphogypsum hydraulicity solidifying agent, mixing and stirring, obtains Preblend, and the water ratio controlling Preblend is 14% ~ 18%, obtain phosphogypsum hydraulicity road basement material;
Described phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 40% ~ 60%, the nano aluminum colloidal sol of 30% ~ 20%, 30% ~ 20% Nano silica sol, the solid content > 55% of described elastic styrene acrylic emulsion.
On the basis of technique scheme, described phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 46% ~ 54%, the nano aluminum colloidal sol of 27% ~ 23%, 27% ~ 23% Nano silica sol.
On the basis of technique scheme, described phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 50%, the nano aluminum colloidal sol of 25%, 25% Nano silica sol.
On the basis of technique scheme, in steps A, by percentage to the quality, the phosphogypsum of 87% ~ 90%, the ordinary portland cement of 13% ~ 10% is taken.
On the basis of technique scheme, in steps A, by percentage to the quality, the phosphogypsum of 88%, the ordinary portland cement of 12% is taken.
On the basis of technique scheme, in step B, by percentage to the quality, take the first batch mixing of 99.75% ~ 99.85%, 0.25% ~ 0.15% phosphogypsum hydraulicity solidifying agent.
On the basis of technique scheme, in step B, by percentage to the quality, take the first batch mixing of 99.8%, 0.2% phosphogypsum hydraulicity solidifying agent.
A kind of phosphogypsum hydraulicity road basement material, adopts described preparation method to make.
A kind of phosphogypsum hydraulicity roadbase, the phosphogypsum hydraulicity road basement material described in employing, makes according to standard road base layer construction method.
On the basis of technique scheme, described standard road base layer construction method is: described phosphogypsum hydraulicity road basement material is transported to road base, and paves on road base; Then compacting leveling, compactness > 99%, namely completes the construction of phosphogypsum hydraulicity roadbase.
Compared with prior art, the invention has the advantages that:
(1) the phosphogypsum hydraulicity road basement material in the present invention, first the phosphogypsum of 85% ~ 92% is taken, the ordinary portland cement of 15% ~ 8%, mixing and stirring, calcium oxide in cement and the reaction of phosphogypsum generation acid-base neutralisation, realize the harmless treatment to phosphogypsum.Then the first batch mixing of 99.7% ~ 99.95% is taken, the phosphogypsum hydraulicity solidifying agent of 0.3% ~ 0.05%, mixing and stirring, obtain Preblend, and the water ratio controlling Preblend is 14% ~ 18%, carries out water hardening process, obtain described phosphogypsum hydraulicity road basement material.Wherein, phosphogypsum hydraulicity solidifying agent is mixed by following component: the elastic styrene acrylic emulsion of 40% ~ 60%, the nano aluminum colloidal sol of 30% ~ 20%, 30% ~ 20% Nano silica sol, the solid content > 55% of elastic styrene acrylic emulsion.The present invention makes full use of phosphogypsum and produces road basement material, reduces the pollution to environment, and turns waste into wealth.
(2) the phosphogypsum hydraulicity solidifying agent in the present invention is high molecular polymer nano material, after its copolymerization long-chain contact phosphogypsum powder, form half flexible solid matrix structure of durable water resistant, make phosphogypsum powder permanent cured, thus directly improve the physical strength of phosphogypsum.And, phosphogypsum hydraulicity solidifying agent and phosphogypsum grains carry out charge-exchange, with phosphogypsum surface negative charge simultaneously, phosphogypsum is made to lose electrostatic attraction to water, thus the Bound moisture around phosphogypsum is replaced into free water, the water-absorbent of phosphogypsum is forever changed into hydrophobicity, therefore, construction formed roadbase splitting resistance by force, not perishable, long service life.
(3) the phosphogypsum hydraulicity road basement material in the present invention directly generates aquation silicic acid gel, these colloids play the effect of lubricant, make roadbase under equal compaction force effect, easier compacting, the compactness of roadbase can reach more than 99% easily, thus greatly strengthens bearing capacity and the impermeability of roadbase.
Embodiment
The invention provides a kind of preparation method of phosphogypsum hydraulicity road basement material, comprise the following steps:
A: ardealite innocent process: by percentage to the quality, takes the phosphogypsum of 85% ~ 92%, the ordinary portland cement of 15% ~ 8%, mixing and stirring, obtains just batch mixing.
Preferably, the phosphogypsum of 87% ~ 90%, the ordinary portland cement of 13% ~ 10% is taken;
Preferred further, take the phosphogypsum of 88%, the ordinary portland cement of 12%, ordinary portland cement is ordinary Portland cement.
Concrete production technique is: take phosphogypsum, joins in a feed bin at cement & stabilized soil stirring station, takes ordinary portland cement, joins in another feed bin at this cement & stabilized soil stirring station; Material in two feed bins is joined in forced mixer, mixing and stirring, obtain just batch mixing.Because phosphogypsum is acid, cement contains calcium chloride, is alkalescence, after phosphogypsum and cement mixing, the chemical reaction of acid-base neutralisation reaction and other complexity occurs, realizes the harmless treatment to phosphogypsum, finally make phosphogypsum become a kind of harmless base mateiral.
B: water hardening process: by percentage to the quality, take the first batch mixing of 99.7% ~ 99.95%, 0.3% ~ 0.05% phosphogypsum hydraulicity solidifying agent, join in forced mixer, mixing and stirring, obtain Preblend, and the water ratio controlling Preblend is 14% ~ 18%, guarantees that it has and maximumly hit solidity and maximum compactness, obtain described phosphogypsum hydraulicity road basement material.
Preferably, take the first batch mixing of 99.75% ~ 99.85%, 0.25% ~ 0.15% phosphogypsum hydraulicity solidifying agent;
Further preferred, take the first batch mixing of 99.8%, 0.2% phosphogypsum hydraulicity solidifying agent.
Wherein, phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 40% ~ 60%, the nano aluminum colloidal sol of 30% ~ 20%, 30% ~ 20% Nano silica sol, the solid content > 55% of described elastic styrene acrylic emulsion, solid content is the mass percent that emulsion or coating dry that rear remainder accounts for total amount under prescribed conditions.Nano aluminum colloidal sol is the colloidal solution that the featheriness aluminum oxide micelle of positive charge is dispersed in water, and particle diameter is 25 ~ 30nm; Nano silica sol is the dispersion liquid of nano level silica dioxide granule in water or in solvent, and particle diameter is 25 ~ 30nm.
Preferably, phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 46% ~ 54%, the nano aluminum colloidal sol of 27% ~ 23%, 27% ~ 23% Nano silica sol;
Further preferred, phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 50%, the nano aluminum colloidal sol of 25%, 25% Nano silica sol.
Below by 5 specific embodiments, above-mentioned preparation method is described in further detail.
Embodiment 1
Embodiment 1 provides a kind of preparation method of phosphogypsum hydraulicity road basement material, comprises the following steps:
Take phosphogypsum 85kg, ordinary portland cement 15kg, mixing and stirring, obtain just batch mixing; (component of phosphogypsum hydraulicity solidifying agent comprises: elastic styrene acrylic emulsion 2kg, nano aluminum colloidal sol 1.5kg, Nano silica sol 1.5kg to take just batch mixing 49.85kg, phosphogypsum hydraulicity solidifying agent 0.15kg, the solid content > 55% of described elastic styrene acrylic emulsion), mixing and stirring, obtain Preblend, and the water ratio controlling Preblend is 14%, obtain described phosphogypsum hydraulicity road basement material.
Test the physicals of described phosphogypsum hydraulicity road basement material: 7 days unconfined compression strengths are 2.68MPa; 28 days unconfined compression strengths are 7.8MPa.
Embodiment 2
Embodiment 2 provides a kind of preparation method of phosphogypsum hydraulicity road basement material, comprises the following steps:
Take phosphogypsum 92kg, ordinary portland cement 8kg, mixing and stirring, obtain just batch mixing; (component of phosphogypsum hydraulicity solidifying agent comprises: elastic styrene acrylic emulsion 3kg, nano aluminum colloidal sol 1kg, Nano silica sol 1kg to take just batch mixing 49.975kg, phosphogypsum hydraulicity solidifying agent 0.025kg, the solid content > 55% of described elastic styrene acrylic emulsion), mixing and stirring, obtain Preblend, and the water ratio controlling Preblend is 18%, obtain described phosphogypsum hydraulicity road basement material.
Test the physicals of described phosphogypsum hydraulicity road basement material: 7 days unconfined compression strengths are 3.5MPa; 28 days unconfined compression strengths are 8MPa.
Embodiment 3
Embodiment 3 provides a kind of preparation method of phosphogypsum hydraulicity road basement material, comprises the following steps:
Take phosphogypsum 87kg, ordinary portland cement 13kg, mixing and stirring, obtain just batch mixing; (component of phosphogypsum hydraulicity solidifying agent comprises: elastic styrene acrylic emulsion 2.3kg, nano aluminum colloidal sol 1.35kg, Nano silica sol 1.35kg to take just batch mixing 49.875kg, phosphogypsum hydraulicity solidifying agent 0.125kg, the solid content > 55% of described elastic styrene acrylic emulsion), mixing and stirring, obtain Preblend, and the water ratio controlling Preblend is 14%, obtain described phosphogypsum hydraulicity road basement material.
Test the physicals of described phosphogypsum hydraulicity road basement material: 7 days unconfined compression strengths are 4.5MPa; 28 days unconfined compression strengths are 8MPa.
Embodiment 4
Embodiment 4 provides a kind of preparation method of phosphogypsum hydraulicity road basement material, comprises the following steps:
Take phosphogypsum 90kg, ordinary portland cement 10kg, mixing and stirring, obtain just batch mixing; (component of phosphogypsum hydraulicity solidifying agent comprises: elastic styrene acrylic emulsion 2.7kg, nano aluminum colloidal sol 1.15kg, Nano silica sol 1.15kg to take just batch mixing 49.925kg, phosphogypsum hydraulicity solidifying agent 0.075kg, the solid content > 55% of described elastic styrene acrylic emulsion), mixing and stirring, obtain Preblend, and the water ratio controlling Preblend is 18%, obtain described phosphogypsum hydraulicity road basement material.
Test the physicals of described phosphogypsum hydraulicity road basement material: 7 days unconfined compression strengths are 4.5MPa; 28 days unconfined compression strengths are 8.1MPa.
Embodiment 5
Embodiment 5 provides a kind of preparation method of phosphogypsum hydraulicity road basement material, comprises the following steps:
Take phosphogypsum 88kg, ordinary portland cement 12kg, mixing and stirring, obtain just batch mixing; (component of phosphogypsum hydraulicity solidifying agent comprises: elastic styrene acrylic emulsion 2.5kg, nano aluminum colloidal sol 1.25kg, Nano silica sol 1.25kg to take just batch mixing 49.9kg, phosphogypsum hydraulicity solidifying agent 0.1kg, the solid content > 55% of described elastic styrene acrylic emulsion), mixing and stirring, obtain Preblend, and the water ratio controlling Preblend is 16%, obtain described phosphogypsum hydraulicity road basement material.
Test the physicals of described phosphogypsum hydraulicity road basement material: 7 days unconfined compression strengths are 4.85MPa; 28 days unconfined compression strengths are 8MPa.
The physicals of the phosphogypsum hydraulicity road basement material obtained by embodiment 1 ~ 5 can draw, the physicals of the phosphogypsum hydraulicity road basement material that the present invention obtains is: 7 days unconfined compression strengths are 2.68 ~ 4.85MPa; 28 days unconfined compression strength >=7.8MPa, are all greater than standard value, therefore, the roadbase ultimate compression strength that phosphogypsum hydraulicity road basement material of the present invention is formed is large, splitting resistance by force, not perishable, long service life.
The present invention also provides a kind of phosphogypsum hydraulicity road basement material, adopts above-mentioned preparation method to make.
The present invention also provides a kind of phosphogypsum hydraulicity roadbase, and adopt phosphogypsum hydraulicity road basement material, make according to standard road base layer construction method, concrete construction method is:
(1) phosphogypsum hydraulicity road basement material is transported to road base, and paves on road base: utilize paver, the phosphogypsum hydraulicity that paves at twice road basement material, the test section that paves first is 1000m
2, the length of each job step is 200m ~ 800m, establishes special messenger to root out local coarse aggregate nest, eliminate fine aggregate segregation phenomenon, ensure planeness after paver.
(2) compacting leveling, ensures compactness > 99%: after the phosphogypsum hydraulicity that at every turn paves road basement material, adopts motorized grader just to put down, after vibroll static pressure 1 ~ 2 time; Then motorized grader leveling, vibroll compacting 4 ~ 6 times; Finally carry out rolling 4 ~ 6 times with three-roll road roller, three-roll road roller trailing wheel should overlap 1/2 be taken turns wide, trailing wheel must be over the seam crossing of two sections, in the process, vibroll should gently afterwards heavily, first quick and back slow first, rolled to centre by both sides, when curve section has a superelevation, rolled by Inside To Outside.When the thickness of the first layer roadbase is 30cm, and after compactness > 99%, carry out second time again to pave phosphogypsum hydraulicity road basement material, and compacting leveling, until the thickness of second layer roadbase is 30cm, and compactness > 99%, complete the construction of phosphogypsum hydraulicity roadbase.Compactness, also known as compacting degree, refers to the dry density after soil or other road-making material compactings and the ratio of standard maximum dry density, represents that the mensuration of compactness mainly comprises indoor standard density (maximum dry density) and determines and on-the-spot density test with percentage.
Above-mentioned phosphogypsum hydraulicity roadbase paves oil mat, road construction can be completed, concrete construction method is: before making oil mat, clean out the foreign material on phosphogypsum hydraulicity roadbase surface, surface dust, avoid it to destroy the combination of oil mat and phosphogypsum hydraulicity roadbase, and ensure that phosphogypsum hydraulicity roadbase surface is without ponding.Phosphogypsum hydraulicity roadbase paves oil mat, after comprising the thick middle granulosa of 5cm and the thick particulate layer of 3cm, before oil mat is qualitative, strict control traffic, and keep road surface to clean, forbid to stack on petrolize surface layer soil or foreign material that construction produces, forbid to make sand-cement slurry on petrolize surface layer.After oil mat sizing, namely complete road construction, open route passes through.
The present invention is not limited to above-mentioned embodiment, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this specification sheets belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. a preparation method for phosphogypsum hydraulicity road basement material, is characterized in that, comprises the following steps:
A. ardealite innocent process: by percentage to the quality, takes the phosphogypsum of 85% ~ 92%, the ordinary portland cement of 15% ~ 8%, mixing and stirring, obtains just batch mixing;
B. water hardening process: by percentage to the quality, take the first batch mixing of 99.7% ~ 99.95%, 0.3% ~ 0.05% phosphogypsum hydraulicity solidifying agent, mixing and stirring, obtains Preblend, and the water ratio controlling Preblend is 14% ~ 18%, obtain phosphogypsum hydraulicity road basement material;
Described phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 40% ~ 60%, the nano aluminum colloidal sol of 30% ~ 20%, 30% ~ 20% Nano silica sol, the solid content > 55% of described elastic styrene acrylic emulsion.
2. the preparation method of phosphogypsum hydraulicity road basement material as claimed in claim 1, is characterized in that: described phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 46% ~ 54%, the nano aluminum colloidal sol of 27% ~ 23%, 27% ~ 23% Nano silica sol.
3. the preparation method of phosphogypsum hydraulicity road basement material as claimed in claim 2, is characterized in that: described phosphogypsum hydraulicity solidifying agent is mixed by the component of following mass percent: the elastic styrene acrylic emulsion of 50%, the nano aluminum colloidal sol of 25%, 25% Nano silica sol.
4. the preparation method of phosphogypsum hydraulicity road basement material as claimed in claim 1, is characterized in that: in steps A, by percentage to the quality, takes the phosphogypsum of 87% ~ 90%, the ordinary portland cement of 13% ~ 10%.
5. the preparation method of phosphogypsum hydraulicity road basement material as claimed in claim 4, is characterized in that: in steps A, by percentage to the quality, takes the phosphogypsum of 88%, the ordinary portland cement of 12%.
6. the preparation method of phosphogypsum hydraulicity road basement material as claimed in claim 1, is characterized in that: in step B, by percentage to the quality, take the first batch mixing of 99.75% ~ 99.85%, 0.25% ~ 0.15% phosphogypsum hydraulicity solidifying agent.
7. the preparation method of phosphogypsum hydraulicity road basement material as claimed in claim 6, is characterized in that: in step B, by percentage to the quality, take the first batch mixing of 99.8%, 0.2% phosphogypsum hydraulicity solidifying agent.
8. a phosphogypsum hydraulicity road basement material, is characterized in that: adopt preparation method according to any one of claim 1 to 7 to make.
9. a phosphogypsum hydraulicity roadbase, is characterized in that: adopt phosphogypsum hydraulicity road basement material according to claim 8, make according to standard road base layer construction method.
10. phosphogypsum hydraulicity roadbase as claimed in claim 9, is characterized in that: described standard road base layer construction method is: described phosphogypsum hydraulicity road basement material is transported to road base, and paves on road base; Then compacting leveling, compactness > 99%, namely completes the construction of phosphogypsum hydraulicity roadbase.
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| CN105688362A (en) * | 2016-01-18 | 2016-06-22 | 四川大学 | Stabilizing agent for phosphogypsum and method for innocent treatment of phosphogypsum |
| CN105669140A (en) * | 2016-02-16 | 2016-06-15 | 湖北固益生环保科技有限公司 | Ardealite pavement material 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 |
| CN107352936B (en) * | 2017-08-09 | 2019-07-09 | 成都理工大学 | Ardealite/silica solution ecological slope protection composite material and preparation method and application |
| CN107352936A (en) * | 2017-08-09 | 2017-11-17 | 成都理工大学 | Ardealite/Ludox ecological revetment composite and its preparation method and application |
| CN108083739A (en) * | 2018-01-26 | 2018-05-29 | 湖北恒沁环保科技有限责任公司 | A kind of ardealite hydraulicity pavement material and preparation method thereof |
| CN108275931A (en) * | 2018-01-26 | 2018-07-13 | 湖北恒沁环保科技有限责任公司 | A kind of phosphogypsum modification material and its application in roadbase |
| CN108275931B (en) * | 2018-01-26 | 2020-12-18 | 湖北恒沁环保科技有限责任公司 | Phosphogypsum modified material and application thereof in road base |
| CN108083739B (en) * | 2018-01-26 | 2020-10-27 | 湖北恒沁环保科技有限责任公司 | Phosphogypsum hydraulic road material and preparation method thereof |
| CN108516766A (en) * | 2018-05-02 | 2018-09-11 | 湖北科创奇纳米科技有限公司 | A kind of preparation method of tailing hydraulicity road basement material |
| CN108706902A (en) * | 2018-05-02 | 2018-10-26 | 湖北科创奇纳米科技有限公司 | A kind of ardealite pressing rock forming agent and the preparation method and application thereof |
| CN108516766B (en) * | 2018-05-02 | 2022-01-04 | 湖北科创奇纳米科技有限公司 | Preparation method of tailing hydraulic road base material |
| CN108751890A (en) * | 2018-05-03 | 2018-11-06 | 上海胜义环境科技有限公司 | A kind of novel environment friendly impervious material based on ardealite |
| CN109626925B (en) * | 2018-12-26 | 2021-12-24 | 四川绵筑新材料有限公司 | Preparation method of phosphogypsum roadbed material based on high-temperature activation and hydraulic property improvement |
| CN109626925A (en) * | 2018-12-26 | 2019-04-16 | 四川绵筑新材料有限公司 | Preparation method based on the ardealite roadbed material that high-temperature activation and the hydraulicity are promoted |
| CN109680574A (en) * | 2019-02-18 | 2019-04-26 | 胡瑾 | Modified ardealite roadbed |
| CN109680574B (en) * | 2019-02-18 | 2023-08-22 | 胡瑾 | Modified phosphogypsum roadbed |
| CN110819355A (en) * | 2019-11-29 | 2020-02-21 | 北京市首发天人生态景观有限公司 | Soil hardening agent and preparation method thereof |
| CN110963776A (en) * | 2019-12-13 | 2020-04-07 | 梁荷 | Recycling method of roadbed repairing solid waste |
| CN111499324A (en) * | 2020-04-02 | 2020-08-07 | 湖北益通建设股份有限公司 | Low-toxicity phosphogypsum cemented macadam material and application thereof in road base course |
| CN111848082A (en) * | 2020-07-21 | 2020-10-30 | 中南安全环境技术研究院股份有限公司 | Large-doped phosphogypsum composite stable roadbed material and preparation method thereof |
| CN111848083B (en) * | 2020-07-21 | 2022-03-22 | 中南安全环境技术研究院股份有限公司 | Environment-friendly phosphogypsum composite stable material and preparation method thereof |
| CN111848083A (en) * | 2020-07-21 | 2020-10-30 | 中南安全环境技术研究院股份有限公司 | Environment-friendly phosphogypsum composite stable material and preparation method thereof |
| CN113603437A (en) * | 2021-07-22 | 2021-11-05 | 中海建筑有限公司贵州分公司 | Phosphogypsum-lime series composite cementing material and preparation method thereof |
| CN114956762A (en) * | 2022-06-09 | 2022-08-30 | 湖北美畅环保科技有限公司 | Curing agent for purifying industrial solid waste and preparation method thereof |
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