CN108409276A - A kind of modified ardealite roadbed material - Google Patents
A kind of modified ardealite roadbed material Download PDFInfo
- Publication number
- CN108409276A CN108409276A CN201810434882.0A CN201810434882A CN108409276A CN 108409276 A CN108409276 A CN 108409276A CN 201810434882 A CN201810434882 A CN 201810434882A CN 108409276 A CN108409276 A CN 108409276A
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- China
- Prior art keywords
- ardealite
- parts
- curing agent
- aqueous solution
- roadbed material
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to technical field of road engineering, particularly disclose a kind of modified ardealite roadbed material.The modified ardealite roadbed material, it is characterized in that, it is raw material by ardealite, sandstone/clay, flyash, quick lime/carbide slag, accompanies according to certain weight and be made than adding curing agent after mixing.Construction method of the present invention is simple, road foundation intensity and modulus of resilience requirement can be met, effectively reduce occupancy of the ardealite to arable land, reduce destruction of the ardealite to environment, simultaneously reduce road foundation relative settlement, improve service life of road surface, suitable for shortage banket area and the area's extensive use higher of ardealite yield.
Description
（One）Technical field
The present invention relates to technical field of road engineering, more particularly to a kind of modified ardealite roadbed material.
（Two）Background technology
Ardealite is a kind of industrial by-products of generation during Wet-process phosphoric acid (WPPA), it was reported that often producing 1 ton of phosphoric acid will be discharged
4-5 tons of ardealite, and ardealite year discharge capacity is about ten thousand tons of 11000-13000 in the world at present, wherein only obtaining on a small quantity
It utilizes, some countries such as Japan, Australia have developed many ardealites due to shortage of land resource, shortage natural gypsum etc.
The utilization rate of the technology of cycling and reutilization, ardealite is very high.In China, with the development of chemical industry, the discharge capacity of ardealite
It is being constantly increasing, but recovery utilization rate is relatively low, less than 20%, pile up like a mountain for the ardealite for causing around phosphorizing treatment, not only
A large amount of land resource is occupied, and ecological environment is also resulted in and is seriously affected.If ardealite is used for nearby local public
Road is built, and can not only be solved the problems, such as the recycling of phosphorous chemical industry enterprise fertilizer, can also be solved the material of building the road in local highway construction
Material demand suffers from enterprise development, social development, ecological environmental protection important meaning.
Roadbed filling is done using ardealite, is made some attempt both at home and abroad, such as university of Florida of the U.S. and Miami
University finds that the mixture containing clay sand and ardealite is good road-making material under study for action.At home, Tang Qingqian etc. is with regard to phosphorus
Gypsum application is studied in feasibility, the mechanical property of trackbed inspection, and ardealite is found in embankment test construction
To water sensitive, performance spring-like figure can not be compacted after the ardealite chance rainwater saturation not rolled, therefore must be stringent in construction
Control moisture content；Shen Weiguo etc. develops a kind of coal ash phosphorus gypsum road surface base layer material, more common two ash of the material（Lime-
Flyash）The early strength of class material is by increasing substantially, but necessary requirement is not achieved in water stability, thus can not promote and answer
With.
（Three）Invention content
In order to compensate for the shortcomings of the prior art, the present invention provides a kind of construction is simple, good engineering quality, Road Service Life are long
Modified ardealite roadbed material.
The present invention is achieved through the following technical solutions：
A kind of modified ardealite roadbed material, it is characterized in that, it is made of addition curing agent after the raw material mixing of following parts by weight：
15-40 parts of ardealite, sandstone/15-40 parts of clay, 5-8 parts of flyash, quick lime/2-3 parts of carbide slag；Above-mentioned raw materials are mixed into
Base material, mixing addition 300-500g curing agent in every 1 cubic metre of base material.
The present invention utilizes flyash, the volcanic ash of quick lime/carbide slag using ardealite and sandstone/clay as primary raw material
Reaction, raw material is mixed, the early strength of mixed raw material is improved, and in addition curing agent, is realized the gelatification of mixed raw material, is dropped
The porosity of low raw material is conducive to the infiltration of outside water, ensures good construction intensity.
The present invention more excellent technical solution be：
The curing agent is one in potassium hydroxide aqueous solution, dodecyl sodium sulfonate calcium aqueous solution and calcium lignosulfonate aqueous solution
Kind is a variety of；Preferably, curing agent be mass concentration be 0.4-0.6% potassium hydroxide aqueous solution, 4-6% dodecyl sulphur
It is one or more in sour calcium aqueous solution and the calcium lignosulfonate aqueous solution of 4-6%.
The additive amount of curing agent is relatively fewer, but acts on huge, the attachment force effectively between enhancing mixed raw material endoparticle,
Improve gelatification, the stability of reinforcing filler.
The preferred weight of each raw material matches：
30 parts of ardealite, 30 parts of sandstone/clay, 6 parts of flyash, 2.5 parts of quick lime/carbide slag.
It is directly applied as road substrate material after the product mix of the present invention, passes through static pressure construction, compacting, test site
Subgrade Compaction is high, meets subgrade construction requirement.
Construction method of the present invention is simple, can meet road foundation intensity and modulus of resilience requirement, effectively reduce ardealite
To the occupancy in arable land, destruction of the ardealite to environment is reduced, while reducing road foundation relative settlement, improving the pavement usage longevity
Life, suitable for shortage banket area and the area's extensive use higher of ardealite yield.
（Four）Specific implementation mode
Embodiment 1：
Using ardealite 15t, sandstone/clay 15t, flyash 5t, quick lime 2t as raw material, it is adequately mixed stirring, obtains base material；
Before construction, curing agent is added into base material, is uniformly mixed, and the additive amount of curing agent is to mix to add in every 1 cubic metre of base material
Add 300g.Curing agent is the potassium hydroxide aqueous solution that mass concentration is 0.4-0.6%.
The base material of curing agent will be added as roadbed raw material, direct construction usage.
Embodiment 2：
Using ardealite 40t, clay 40t, flyash 8t, carbide slag 3t as raw material, it is adequately mixed stirring, obtains base material；It is applying
Before work, curing agent is added into base material, is uniformly mixed, and the additive amount of curing agent is that addition is mixed in every 1 cubic metre of base material
500g.Curing agent is in the calcium lignosulfonate aqueous solution of dodecyl sodium sulfonate calcium aqueous solution and 4-6% that mass concentration is 4-6%
Mixture.
The base material of curing agent will be added as roadbed raw material, direct construction usage.
Embodiment 3：
Using ardealite 30t, sandstone 30t, flyash 6t, carbide slag 2.5t as raw material, it is adequately mixed stirring, obtains base material；
Before construction, curing agent is added into base material, is uniformly mixed, and the additive amount of curing agent is that addition is mixed in every 1 cubic metre of base material
400g.Curing agent is the dodecyl sodium sulfonate calcium aqueous solution that mass concentration is 4-6%.
The base material of curing agent will be added as roadbed raw material, direct construction usage.
The roadbed raw material that above-described embodiment obtains is detected, national radioactive activity requirement is met.With above-mentioned road
Based raw material is constructed for sample, and reality is hit using standard heavy duty, divides three layers, every layer 98 is hit, and test result is as follows：
Carrying ratio is done to the roadbed raw material that above-described embodiment 1-3 is obtained（CBR）Experiment（Time size）：Standard heavy duty hit it is real at
Type, soaked 96h surveys swell increment, and does penetration test, as a result as follows：
（1）Test specimen swell increment
（2）California bearing ratio value is tested
JTJ033-95《Highway Roadbed Construction Technology specification》Table 5.1.5 is as shown in the table to roadbed filling intensity requirement：
By upper table comparison it is found that the roadbed material swell increment very little of the present invention, water stability is good, and intensity meets JTJ033-95《It is public
Road Roadbed Construction Technology specification》Requirement of the upper roadbed to roadbed filling CBR >=8% can be used as roadbed filling.
In an experiment, it is tested by maximum dry density and optimum moisture content hydrostatic profile, is injection experiment CBR and reaches 65%, far
Higher than Beat numbers test specimen CBR values.Courseware, oscillating load are very big to the disturbance of ardealite, and when construction should use static pressure pressure as possible
It is real.
Claims (4)
1. a kind of modified ardealite roadbed material, it is characterized in that, by adding curing agent system after the raw material mixing of following parts by weight
At：15-40 parts of ardealite, sandstone/15-40 parts of clay, 5-8 parts of flyash, quick lime/2-3 parts of carbide slag；Above-mentioned raw materials mix
For base material, mixing addition 300-500g curing agent in every 1 cubic metre of base material.
2. modified ardealite roadbed material according to claim 1, it is characterised in that：The curing agent is potassium hydroxide water
It is one or more in solution, dodecyl sodium sulfonate calcium aqueous solution and calcium lignosulfonate aqueous solution.
3. modified ardealite roadbed material according to claim 1, feature by the raw material of following parts by weight to be mixed
Curing agent is added after conjunction to be made：30 parts of ardealite, 30 parts of sandstone/clay, 6 parts of flyash, 2.5 parts of quick lime/carbide slag.
4. modified ardealite roadbed material according to claim 1, it is characterised in that：The curing agent is that mass concentration is
The calcium lignosulfonate aqueous solution of the potassium hydroxide aqueous solution of 0.4-0.6%, the dodecyl sodium sulfonate calcium aqueous solution of 4-6% and 4-6%
In it is one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810434882.0A CN108409276A (en) | 2018-05-09 | 2018-05-09 | A kind of modified ardealite roadbed material |
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| CN201810434882.0A CN108409276A (en) | 2018-05-09 | 2018-05-09 | A kind of modified ardealite roadbed material |
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| CN201810434882.0A Pending CN108409276A (en) | 2018-05-09 | 2018-05-09 | A kind of modified ardealite roadbed material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109279853A (en) * | 2018-10-31 | 2019-01-29 | 宁夏青山三元矿业有限公司 | A kind of compound plastic gypsum modifier and preparation method thereof |
| CN109369119A (en) * | 2018-10-29 | 2019-02-22 | 程钰 | The preparation and application method of modified ardealite Load materials based on aluminium smelting waste residue |
| CN109440560A (en) * | 2018-10-24 | 2019-03-08 | 渭南渭业环保科技有限公司 | A kind of ardealite lime stablized soil |
| CN109626850A (en) * | 2019-02-18 | 2019-04-16 | 胡瑾 | Modified ardealite and preparation method thereof |
| CN109680574A (en) * | 2019-02-18 | 2019-04-26 | 胡瑾 | Modified ardealite roadbed |
| CN113087486A (en) * | 2021-03-19 | 2021-07-09 | 杭州航弘建设科技有限公司 | High-stability roadbed filler and preparation method thereof |
| CN113860833A (en) * | 2021-08-20 | 2021-12-31 | 贵州大学 | High-doping-amount phosphogypsum-stabilized red clay road base material and preparation method thereof |
| CN114133197A (en) * | 2021-12-07 | 2022-03-04 | 武汉圣清之源科技有限公司 | Road water-stable layer material and preparation method thereof |
| CN115286344A (en) * | 2022-08-18 | 2022-11-04 | 重庆大学 | Method for preparing curing agent by using phosphogypsum and application thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440560A (en) * | 2018-10-24 | 2019-03-08 | 渭南渭业环保科技有限公司 | A kind of ardealite lime stablized soil |
| CN109369119A (en) * | 2018-10-29 | 2019-02-22 | 程钰 | The preparation and application method of modified ardealite Load materials based on aluminium smelting waste residue |
| CN109279853A (en) * | 2018-10-31 | 2019-01-29 | 宁夏青山三元矿业有限公司 | A kind of compound plastic gypsum modifier and preparation method thereof |
| CN109279853B (en) * | 2018-10-31 | 2021-03-19 | 宁夏青山三元矿业有限公司 | Composite plastic gypsum modifier and preparation method thereof |
| CN109626850A (en) * | 2019-02-18 | 2019-04-16 | 胡瑾 | Modified ardealite and preparation method thereof |
| CN109680574A (en) * | 2019-02-18 | 2019-04-26 | 胡瑾 | Modified ardealite roadbed |
| CN109626850B (en) * | 2019-02-18 | 2021-09-14 | 胡瑾 | Modified phosphogypsum and preparation method thereof |
| CN109680574B (en) * | 2019-02-18 | 2023-08-22 | 胡瑾 | Modified phosphogypsum roadbed |
| CN113087486A (en) * | 2021-03-19 | 2021-07-09 | 杭州航弘建设科技有限公司 | High-stability roadbed filler and preparation method thereof |
| CN113860833A (en) * | 2021-08-20 | 2021-12-31 | 贵州大学 | High-doping-amount phosphogypsum-stabilized red clay road base material and preparation method thereof |
| CN114133197A (en) * | 2021-12-07 | 2022-03-04 | 武汉圣清之源科技有限公司 | Road water-stable layer material and preparation method thereof |
| CN115286344A (en) * | 2022-08-18 | 2022-11-04 | 重庆大学 | Method for preparing curing agent by using phosphogypsum and application thereof |
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