CN108117358A - A kind of curing of waste soil combined processing - Google Patents
A kind of curing of waste soil combined processing Download PDFInfo
- Publication number
- CN108117358A CN108117358A CN201711469209.2A CN201711469209A CN108117358A CN 108117358 A CN108117358 A CN 108117358A CN 201711469209 A CN201711469209 A CN 201711469209A CN 108117358 A CN108117358 A CN 108117358A
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- China
- Prior art keywords
- mud
- soil
- waste
- curing
- lime
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C04B28/144—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 a flue gas desulfurization product
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0436—Dredged harbour or river sludge
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Treatment Of Sludge (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of curing of waste soil combined processing, according to pending mud moisture content, puts into a certain amount of quick lime in pending mud, and stirs evenly, and during this, mud is alkalized；According to the incorporation of lime determine Modified soil containing alkali content, be set to A%；According to the A% containing alkali content of mud mud Modified soil, curing materials match ratio is determined, by Modified soil：Aluminum silicate industrial solid castoff：Desulfurated plaster=100:(3A~4A):The ratio of (A~2A) stirs evenly；In proportion the 1 of obtained mixture and waste soil:1~1:6 mixing, after mixing, you can for backfilling, soft base cure.Processing mud of the invention quick, when outward transport, no longer generate " drop is spilt " phenomenon.Using processed mud as other waste soils of the excitation material of soil solidification cooperation industrial residue composite curing, make waste soil efficient resource, it is environmentally protective with solid waste of giving up, meet the requirement of sustainable development.
Description
【Technical field】
The invention belongs to environment-friendly engineering technical fields, and in particular to a kind of curing of waste soil combined processing.
【Background technology】
The moisture content for the engineering discarded slurry that the mud mud that channel cleanout generates is generated with engineering construction is high, is moulded in stream
Property, engineering property is very poor.Common processing method mainly includes：Mud is carried out natural sedimentation and using outside groove tank car by construction site
Mud is transported to two kinds of outer suburbs nature desiccation.
The drawbacks of mud is carried out natural sedimentation by construction site is：It is larger to precipitate mud pit floor space needed for mud,
And construction site place resource is limited, while large area mud conditioning can pollute construction site environment.
Using groove tank car outward transport mud to the drawbacks of outer suburbs nature desiccation be：Groove tank car freight is high, mud conditioning
Efficiency is low, and the leakage of transportational process can pollute urban environment, causes water body and soil pollution, and municipal pipeline blocks.To be quick
Mud is handled, is largely transported outward by slag-soil truck, meets engineering construction needs, generally requires to add in the reductions such as flocculant, curing agent
Slip fluidity generates " drop is spilt " phenomenon during preventing that slag-soil truck from transporting outward.But it is still very poor to transport outward mud engineering property, Wu Fazuo
It is used for engineering soil, waste soil accumulation can only be used as to throw aside, there are security risks to environment.If carrying out secondary curing, add
To utilize, the consolidation effect of single treatment and after-treatment can not be superimposed.Soil-solidified-agent quickly handles mud, after outward transport, Gu
Change mud to carry out needing broken stirring during secondary curing, therefore consolidation effect during single treatment can disappear and waste, it is solid twice
Therefore changing the consolidation effect of processing can not be superimposed or even can generate reaction (efficient flocculant often for organic medicament, often
Inhibit the hydration of hydraulic material, and soil-solidified-agent during after-treatment is mainly hydraulic material, due to flocculant
Etc. a large amount of presence of organic medicament, the volume of soil-solidified-agent is caused to greatly improve), processing cost is caused to be substantially increased, therefore
It is also difficult to carry out in Practical Project.
To sum up, the shortcomings that prior art is primarily present is：1. handle mud, mistake the time required to low-cost processes means
Long, processing cost needed for the method for processing time is short is excessively high；2. mud single treatment outward transport and after-treatment utilize inaccurate coordination,
Recycling is difficult.
【The content of the invention】
The technical problems to be solved by the invention are that providing one kind quickly improves mud bleeding resistance, facilitates transhipment, and energy
The inexpensive method of resource of curing process is carried out with other waste soils.
What the present invention was realized in：
A kind of curing of waste soil combined processing, comprises the following steps：
Step 1：According to pending mud moisture content, a certain amount of quick lime is put into pending mud, and is stirred
It mixes uniformly, during this, mud is alkalized；According to the incorporation of lime determine Modified soil containing alkali content, be set to A%；
Step 2：According to the A% containing alkali content of mud mud Modified soil, curing materials match ratio is determined, by Modified soil：Aluminium silicon
Barbiturates industrial solid castoff：Desulfurated plaster=100:(3A~4A):The ratio of (A~2A) stirs evenly；
Step 3：In mixture 48h that step 2 obtains with waste soil in proportion 1:1~1:6 mixing or step 2 and step
Rapid San Tong method carries out, after mixing, you can for backfilling, soft base cures.
The advantage of the invention is that：
1. quickly processing mud：Mud liquid limit is quickly improved by quick lime reduces mud moisture content simultaneously, resists mud
Fluidity greatly improves, and when outward transport no longer generates " drop is spilt " phenomenon.
2. coordinate other waste soils of industrial residue composite curing using processed mud as the excitation material of soil solidification,
Make waste soil efficient resource, it is environmentally protective with solid waste of giving up, meet the requirement of sustainable development.
3. lime used in the quick processing of mud, can play other effects, i.e. waste soil curing process in step 3
It a certain amount of mud of extra process, the cost performance of lime can be greatly improved in the case where not increasing material cost, so as to
The material cost of waste soil processing is reduced on the whole.
【Description of the drawings】
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is influence curve figure of the lime intermingled quantity to different water cut mud mud of the present invention.
【Specific embodiment】
Applicant of the present invention has carried out a series of research：
After the mud mud of different water cut is stood, moisture content tends towards stability, the moisture content measured after being stood one day with it
Natural moisture content (original soil moisture content) as mud mud.The mud liquid limit under different natural moisture contents, such as Fig. 1 are measured respectively
Shown, the natural moisture content of mud mud is far above the liquid limit (original soil liquid limit) of mud mud, therefore mud mud is in flowing
State, and mobility is fine.A certain amount of quick lime is added in (see " lime in Fig. 1 according to different mud mud natural moisture contents
Critical values " curve), obtained modification mud mud (Modified soil) character can change, and Modified soil liquid limit occurs more bright
Aobvious promotion, while quick lime can consume substantial amounts of moisture, significantly improve solid content in Modified soil.When quick lime volume surpasses
After crossing boundary volume, Modified soil moisture content would fall to below Modified soil liquid limit, and the mobility of Modified soil disappears, at this time Modified soil
The requirement for transporting outward not " drop is spilt " is met.
When handling mud mud due to quick lime, digestion reaction mainly occurs, most of calcium oxide is converted into calcium hydroxide,
The efficient oxidation calcium component consumption in Modified soil is less, as long as it is discarded that the efficient oxidation calcium in Modified soil is made full use of to carry out other
Soil cures, then is equivalent to material cost required during mud mud conditioning close to 0.CaO+H2O=Ca (OH) 2+65.17kJ.
Alkali-activated carbonatite cementitious material be it is a kind of there is pozzolanic activity or latent hydraulicity raw material and alkali-activator reaction and
Into a kind of cementitious material, this kind of material is mostly using aluminum silicate mineral as main raw material(s).Many industrial solid castoffs are such as:
Slag, slag, flyash and gangue etc., main mineral constituent are silicate or aluminum silicate, therefore, alkali-activated carbonatite gelling
Material is mostly with industrial solid waste residue and the compound preparation of alkali.Soil curing material is used as by alkali-activated carbonatite cementitious material, it can be effective
Cure waste soil, while substantial amounts of industrial solid waste residue can be consumed, and effective oxygen in modified mud mud can be made full use of
Change calcium component, effectively reduce sludge treatment and the material cost of waste soil solidification process.
Said below by specific embodiment describe in detail it is bright：
Embodiment 1：
Foochow Pudong river riverway sludge moisture content about 110%, by 140kg/m3Caustic lime block is put into, and is stirred repeatedly with digging machine
It mixes, caustic lime block vigorous reaction, discharges amount of heat, muck surface cement evaporation rate is accelerated, and during 12h, mud has lost stream
Dynamic property, can carry out outward transport processing.
Modified mud is about 10% containing alkali content, and modified mud, miberal powder and desulfurated plaster press 100:35:15 be uniformly mixed
To can be used for the curing materials of soil solidification.
Curing materials and 73% soft modeling shape mud press 1:It after 3 mixing, is used as soft base backfill, without lateral spacing resistance to compression during 7d
Intensity is 0.21MPa, and unconfined compressive strength is 0.43MPa during 28d, meets soft base solidifying requirements.
Advantage：Caustic lime block has lacked fine grinding process compared with calcium lime powder, and price is substantially reduced, and price is suitable with cement；
It is directly invested in mud and digested using caustic lime block, can quickly consume moisture, mud is made to lose flowability and meets outward transport requirement；
The lime strong basicity of digestion is basically unchanged, with plant residue -- desulfurated plaster is compound can effectively to excite industrial residue --, and miberal powder is lived
Property, by the cementing soil particle of hydration reaction, therefore used quick lime can produce again in secondary curing weak soil during dredging
Raw effect, quick lime cost reduces at double when being equivalent to dredging.
Embodiment 2：
Nanchang whole world park mud moisture content 306%, by 300kg/m3Caustic lime block is put into, and is stirred repeatedly with digging machine,
Caustic lime block vigorous reaction discharges amount of heat, and muck surface cement evaporation rate is accelerated, and during 12h, mud has lost flowing
Property, outward transport processing can be carried out.
Modified mud is about 20% containing alkali content, and modified mud, miberal powder and desulfurated plaster press 100:80:40 be uniformly mixed
To can be used for the curing materials of soil solidification.
Curing materials and 86% soft modeling shape mud press 1:It after 6 mixing, is used as park subgrade soils, without lateral spacing resistance to compression during 7d
Intensity is 0.33MPa, and unconfined compressive strength is 0.70MPa during 28d, meets park roadbed design requirement.
Advantage：Caustic lime block has lacked fine grinding process compared with calcium lime powder, and price is substantially reduced, and price is suitable with cement；
It is directly invested in mud and digested using caustic lime block, can quickly consume moisture, mud is made to lose flowability and meets outward transport requirement；
The lime strong basicity of digestion is basically unchanged, with plant residue -- desulfurated plaster is compound can effectively to excite industrial residue --, and miberal powder is lived
Property, by the cementing soil particle of hydration reaction, therefore used quick lime can produce again in secondary curing weak soil during dredging
Raw effect, is equivalent to that curing materials are actual only to be consumed in secondary curing, and material during single treatment is equivalent to freely.
Preferable the foregoing is merely the present invention implements use-case, is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement for being made etc. should be included in the present invention's
Within protection domain.
Claims (1)
1. a kind of curing of waste soil combined processing, it is characterised in that：Comprise the following steps：
Step 1：According to pending mud moisture content, a certain amount of quick lime is put into pending mud, and is stirred equal
Even, during this, mud is alkalized；According to the incorporation of lime determine Modified soil containing alkali content, be set to A%；
Step 2：According to the A% containing alkali content of mud mud Modified soil, curing materials match ratio is determined, by Modified soil：Aluminosilicate
Class industrial solid castoff：Desulfurated plaster=100:(3A~4A):The ratio of (A~2A) stirs evenly；
Step 3：With in proportion the 1 of waste soil in mixture 48h that step 2 obtains:1~1:6 mixing or step 2 and step
San Tong method carry out, after mixing, you can for backfilling, soft base cure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711469209.2A CN108117358B (en) | 2017-12-29 | 2017-12-29 | Curing method for waste soil composite treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711469209.2A CN108117358B (en) | 2017-12-29 | 2017-12-29 | Curing method for waste soil composite treatment |
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| Publication Number | Publication Date |
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| CN108117358A true CN108117358A (en) | 2018-06-05 |
| CN108117358B CN108117358B (en) | 2020-10-27 |
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| CN201711469209.2A Active CN108117358B (en) | 2017-12-29 | 2017-12-29 | Curing method for waste soil composite treatment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530414A (en) * | 2018-11-09 | 2019-03-29 | 中国科学院广州能源研究所 | A method of utilizing compost humic acid repairing heavy metal in soil |
| CN110776285A (en) * | 2019-09-24 | 2020-02-11 | 中电建生态环境集团有限公司 | Improved slag soil regeneration backfill material and preparation method thereof |
| CN111041916A (en) * | 2019-12-30 | 2020-04-21 | 中交水利水电建设有限公司 | Roadbed construction method by solidifying earthwork |
| CN111187047A (en) * | 2020-03-06 | 2020-05-22 | 西南科技大学城市学院 | Method for treating waste sludge |
| CN111943620A (en) * | 2020-07-17 | 2020-11-17 | 福建建工建材科技开发有限公司 | Slurry curing agent and application thereof |
| CN112010621A (en) * | 2020-08-25 | 2020-12-01 | 上海市政工程设计研究总院（集团）有限公司 | Low-cost high-fluidity backfill material and preparation method thereof |
| CN114085054A (en) * | 2021-09-24 | 2022-02-25 | 武汉理工大学 | Method for preparing functional water permeable material by using multi-source solid waste |
| CN114225805A (en) * | 2021-11-04 | 2022-03-25 | 河海大学 | Automatic waste soil crushing device and intelligent material mixing method |
| CN114942316A (en) * | 2022-05-30 | 2022-08-26 | 中铁工程服务有限公司 | Detection method for recycling of muck |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109530414A (en) * | 2018-11-09 | 2019-03-29 | 中国科学院广州能源研究所 | A method of utilizing compost humic acid repairing heavy metal in soil |
| CN109530414B (en) * | 2018-11-09 | 2021-05-04 | 中国科学院广州能源研究所 | Method for restoring heavy metals in soil by utilizing compost humic acid |
| CN110776285A (en) * | 2019-09-24 | 2020-02-11 | 中电建生态环境集团有限公司 | Improved slag soil regeneration backfill material and preparation method thereof |
| CN111041916A (en) * | 2019-12-30 | 2020-04-21 | 中交水利水电建设有限公司 | Roadbed construction method by solidifying earthwork |
| CN111187047A (en) * | 2020-03-06 | 2020-05-22 | 西南科技大学城市学院 | Method for treating waste sludge |
| CN111943620A (en) * | 2020-07-17 | 2020-11-17 | 福建建工建材科技开发有限公司 | Slurry curing agent and application thereof |
| CN112010621A (en) * | 2020-08-25 | 2020-12-01 | 上海市政工程设计研究总院（集团）有限公司 | Low-cost high-fluidity backfill material and preparation method thereof |
| CN114085054A (en) * | 2021-09-24 | 2022-02-25 | 武汉理工大学 | Method for preparing functional water permeable material by using multi-source solid waste |
| CN114085054B (en) * | 2021-09-24 | 2023-03-10 | 武汉理工大学 | Method for preparing functional water permeable material by using multi-source solid waste |
| CN114225805A (en) * | 2021-11-04 | 2022-03-25 | 河海大学 | Automatic waste soil crushing device and intelligent material mixing method |
| CN114942316A (en) * | 2022-05-30 | 2022-08-26 | 中铁工程服务有限公司 | Detection method for recycling of muck |
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| CN108117358B (en) | 2020-10-27 |
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