CN109020312A - A kind of sand for refuse landfill-attapulgite vertical impermeable wall material and its preparation method - Google Patents
A kind of sand for refuse landfill-attapulgite vertical impermeable wall material and its preparation method Download PDFInfo
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- CN109020312A CN109020312A CN201810598888.1A CN201810598888A CN109020312A CN 109020312 A CN109020312 A CN 109020312A CN 201810598888 A CN201810598888 A CN 201810598888A CN 109020312 A CN109020312 A CN 109020312A
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- Prior art keywords
- attapulgite
- sand
- refuse landfill
- impermeable wall
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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
- C04B28/001—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 unburned clay
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00775—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes the composition being used as waste barriers or the like, e.g. compositions used for waste disposal purposes only, but not containing the waste itself
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0037—Clays
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of sand for refuse landfill-attapulgite vertical impermeable wall materials, belong to refuse landfill vertical seepage control technical field, including normal sand and powdered attapulgite, wherein, normal sand weight percent is no more than 90%, and surplus is powdered attapulgite.Invention also discloses its configuration methods.It is of the invention to propose a kind of new sand-attapulgite vertical impermeable wall material, solve the problems, such as some existing for soil-bentonite cut-pff wall material, when attapulgite content is not less than 30% in backfill material, osmotic coefficient k is lower than 10‑9M/s, while in order to control the compressibility of backfill material, attapulgite content is no more than 60% in backfill material.Configuration method step of the invention is simple, and attapulgite is huge in reserves in China, cheap；Attapulgite is applied to refuse landfill vertical impermeable wall material, the anti-pollution of cut-pff wall not only can be improved, but also construction cost can be saved, while expanding attapulgite in the application of environment protection field.
Description
Technical field
The invention belongs to refuse landfill vertical seepage control technical fields, and in particular to a kind of sand-for refuse landfill
Attapulgite vertical impermeable wall material and its preparation method.
Background technique
Currently, Chinese MSW research yield is just increased close to 200,000,000 tons/year with 10% speed, has seriously threatened ecological ring
Border and resident's health.The landfill yard of China's early stage construction is mostly relatively simple, mainly using natural clay layer as impervious lining.
Many Mini nutritionalassessment percolates cause serious pollution to periphery water and soil.Due to there is no method to its substrate antiseepage, in order to anti-
Only Mini nutritionalassessment leaks the influence to surrounding enviroment, and vertical seepage control is particularly important.
Vertical seepage control system is widely used in the waste treatment project of existing landfill yard.Soil-swelling soil series vertical impermeable wall
Since easy construction, low in cost, permeability are low, (osmotic coefficient k is usually 10-9~10-11It m/s is answered in vertical seepage control system
With more popular one kind.
However existing scholar is research shows that the increase of the concentration of electrolyte and organic solution can significantly improve soil-bentonite antiseepage
The permeability of walling material makes the reduction of its anti-pollution, and the concentration of pollutants from landfill leachate is generally all very high；Due to long-term
Groundwater level fluctuation, soil-bentonite vertical impermeable wall top is constantly subjected to drying and watering cycle, and infiltration coefficient also will increase.
Attapulgite is a kind of clay mineral with chain layer structure, and compared with bentonite, attapulgite has three-dimensional
Space structure is not in the dilatancy of montmorillonite type, and dry contraction is small, and does not generate cracking；Attapulgite has only simultaneously
Special fibre structure, makes it have higher absorption property, and high temperature resistant, salt resistance alkali.The specific surface area of attapulgite is up to
150~210m2/ g, some is up to 423m after processing2/g.Therefore attapulgite is widely used at environment protection field, including sewage
Reason, exhaust-gas treatment, heavy-metal contaminated soil reparation etc..
Concave-convex clay rod resource is fewer in the world, is distributed only over a few countries, and China is that the world is main recessed
Convex stick stone clay contains state and producing country, and reserves are huge, from a wealth of sources, cheap, is readily produced, has a extensive future, tool
There is the laudatory title of " thousand kinds of kings with soil, ten thousand soil ".
Attapulgite as a kind of widely used clay, refuse landfill vertical seepage control field application study also very
It is few.
Summary of the invention
Goal of the invention: the purpose of the present invention is to provide a kind of sand for refuse landfill-attapulgite vertical seepage controls
Walling material creatively uses normal sand and attapulgite in cut-pff wall material；It is another object of the present invention to disclose its configuration
Method.
Technical solution: to achieve the above object, the invention provides the following technical scheme:
A kind of sand for refuse landfill-attapulgite vertical impermeable wall material, including normal sand and powdered bumps
Stick soil, wherein the weight percent of normal sand is no more than 90%.
The weight percent of the normal sand is 20%~90%, the weight percent of the powdered attapulgite
It is 10%~80%, and the sum of above-mentioned each component is 100%.
The partial size of the powdered attapulgite is below 200 mesh.
The weight percent of the powdered attapulgite is not less than 30% and is not higher than 60%.
A kind of sand for refuse landfill-attapulgite vertical impermeable wall material preparation method, including with
Lower step:
1) the arenaceous stratum soil in using normal sand as refuse landfill vertical impermeable wall digging process, in proportion toward standard
Attapulgite is added in sand, obtains sand-attapulgite backfill material；
2) sand-attapulgite backfill material is uniformly mixed with water, to obtain sand-attapulgite for refuse landfill
Vertical impermeable wall material.
In step 2), the additive amount of the water makes sand-attapulgite backfill material meet slump 100mm~150mm.
The utility model has the advantages that compared with prior art, of the invention proposes a kind of new sand-attapulgite vertical seepage control walling
Material, solves the problems, such as it is some existing for soil-bentonite cut-pff wall material, when attapulgite content is not less than 30% in backfill material,
Its osmotic coefficient k is lower than 10-9M/s, while in order to control the compressibility of backfill material, attapulgite content is no more than in backfill material
60%.Configuration method step of the invention is simple, and attapulgite is huge in reserves in China, cheap；Attapulgite is answered
For refuse landfill vertical impermeable wall material, the anti-pollution of cut-pff wall not only can be improved, but also construction cost can be saved, together
When expand attapulgite environment protection field application.
Detailed description of the invention
Fig. 1 is sand-attapulgite vertical impermeable wall material cake compressibility (Cc) with attapulgite content in materials for wall
Change curve；
Fig. 2 is variation of the sand-attapulgite vertical impermeable wall material permeability coefficient k with attapulgite content in materials for wall
Curve.
Specific embodiment
The present invention will be further explained in the following with reference to the drawings and specific embodiments.
A kind of sand for refuse landfill-attapulgite vertical impermeable wall material, including normal sand and powdered bumps
Stick soil, wherein the weight percent of normal sand is no more than 90%, and surplus is powdered attapulgite.
The weight percent of normal sand is 20%~90%, the weight percent of powdered attapulgite is 10%~
80%, and the sum of above-mentioned each component is 100%.
The partial size of powdered attapulgite is below 200 mesh.
The weight percent of powdered attapulgite is not less than 30% and is not higher than 60%.
A kind of preparation method of the sand for refuse landfill-attapulgite vertical impermeable wall material, comprising the following steps:
1) the arenaceous stratum soil in using normal sand as refuse landfill vertical impermeable wall digging process, in proportion toward standard
Attapulgite is added in sand, obtains sand-attapulgite backfill material；
2) sand-attapulgite backfill material is uniformly mixed with water, to obtain sand-attapulgite for refuse landfill
Vertical impermeable wall material.
In step 1), the attapulgite by adding different content into normal sand is configured to different attapulgite contents
Sand-attapulgite backfill material.Wherein the attapulgite content in backfill material can depend on the circumstances, bumps used in the present invention
The ratio that stick soil accounts for backfill material is 10%, 20%, 30%, 40%, 60% and 80% respectively.
In step 2), the backfill material and water is uniform, wherein the additive amount of water will make sand-attapulgite backfill material satisfaction collapse
Degree of falling is the requirement of 100mm~150mm, and what is chosen in the present invention is the addition of water when backfill material being made to meet the 100mm slump
Amount, specific 2 slump consistancy test of implementation method square method.Specific proportion is shown in Table 1.
Sand-attapulgite divider wall material compressibility and infiltration are studied by consolidation test and rigid walls permeability test
Property.Backfill material is the sand-for being respectively provided with 10%, 20%, 30%, 40%, 60% and 80% attapulgite content (AC) (dry weight)
Attapulgite mixture.Test result is shown in Table 2.
The proportion of 1 six groups of backfill material of table
The test result of 2 six groups of backfill material of table
| Backfill material number | Cake compressibility (Cc) | Infiltration coefficient, k (m/s) |
| A10S90 | 0.081 | 5.9×10-9 |
| A20S80 | 0.137 | 3.0×10-9 |
| A30S70 | 0.197 | 6.4×10-10 |
| A40S60 | 0.274 | 4.9×10-10 |
| A60S40 | 0.358 | 2.3×10-10 |
| A80S20 | 0.542 | 1.3×10-10 |
1, sand-attapulgite cut-pff wall material
Sand-attapulgite backfill material is made of normal sand and powdered attapulgite, wherein attapulgite additive amount (AC)
10%, 20%, 30%, 40%, 60% and 80% respectively (the dry weight ratio that attapulgite accounts for backfill material), be denoted as A10S90,
A20S80, A30S70, A40S60, A60S40 and A80S20.
2, slump consistancy test
Moisture content (w) when in order to determine that backfill material reaches the 100mm slump (Δ H), according to " normal concrete mixture
Method for testing performance standard " (GB/T 50080-2002) to backfill expect carry out slump consistancy test.Choose slump Δ H=100mm
When moisture content carry out consolidation test and rigid walls permeability test as the initial aqueous rate of sample.
3, consolidation test
According to " Standard for test methods of earthworks " (GB/T 50123-1999), press consolidation apparatus to every group of backfill material in three
All carry out one-dimensional consolidation test.In order to avoid sample is squeezed out from the gap of cutting ring and permeable stone, the initial pressure of sample is arranged
For 3.125kPa.Every grade of load continues for 24 hours.
4, rigid walls permeability test
The present invention is according to variable head permeability test method in " Standard for test methods of earthworks " (GB/T 50123-1999) to examination
Sample permeability test.Test apparatus uses TST-55 falling head permeameter, cutting ring the internal diameter 61.8mm, high 40mm of permeameter.First will
Sample consolidates under 50kPa vertical pressure and carries out permeability test again for 24 hours, and penetrating fluid is deionized water.
Fig. 1 and Fig. 2 is test result of the invention.Fig. 1 shows to backfill the cake compressibility C of materialcWith concave convex rod in backfill material
The increase of native content (AC) and linearly increase, wherein Cc=0.0062AC+0.0161 (r2=0.9914), when concave-convex in backfill material
When stick soil content is more than 60%, the cake compressibility for backfilling material is greater than 0.4.The compressibility of backfill material crosses senior general and causes vertical impermeable wall
The biggish foundation deformation in groove periphery and displacement, to be damaged to surrounding soil and building.In order to control sand-concave convex rod
The compressibility of earthen backfill material, it is proposed that attapulgite content is no more than 60% in backfill material.
Fig. 2 is the backfill material infiltration coefficient measured with rigid walls permeability test, the results showed that when attapulgite in backfill material
For content in 10% and 20%, infiltration coefficient is higher than 10-9M/s (geological environment controlling value), only when concave convex rod in backfill material
When native content is not less than 30%, osmotic coefficient k can just be lower than 10-9m/s。
It is feasible that the result of study of this paper, which shows that sand-attapulgite divider wall is applied to refuse landfill vertical seepage control field,
, bentonite in traditional soil-bentonite divider wall can be substituted with attapulgite.In order to control sand-attapulgite divider wall
Compressibility and permeability, it is proposed that the control of attapulgite content is not less than 30% and not higher than 60% in backfill material.
Claims (6)
1. a kind of sand for refuse landfill-attapulgite vertical impermeable wall material, it is characterised in that: including normal sand and powder
Last shape attapulgite, wherein the weight percent of normal sand is no more than 90%.
2. a kind of sand for refuse landfill-attapulgite vertical impermeable wall material according to claim 1, feature
Be: the weight percent of the normal sand is 20%~90%, and the weight percent of the powdered attapulgite is
10%~80%, and the sum of above-mentioned each component is 100%.
3. a kind of sand for refuse landfill-attapulgite vertical impermeable wall material according to claim 1, feature
Be: the partial size of the powdered attapulgite is below 200 mesh.
4. a kind of sand for refuse landfill-attapulgite vertical impermeable wall material according to claim 1, feature
Be: the weight percent of the powdered attapulgite is not less than 30% and not higher than 60%.
5. a kind of sand for refuse landfill-attapulgite vertical seepage control walling described in any one of claim 1-4
The preparation method of material, it is characterised in that: the following steps are included:
1) the arenaceous stratum soil in using normal sand as refuse landfill vertical impermeable wall digging process, in proportion into normal sand
Attapulgite is added, obtains sand-attapulgite backfill material；
2) sand-attapulgite backfill material is uniformly mixed with water, to obtain vertical for sand-attapulgite of refuse landfill
Cut-pff wall material.
6. a kind of preparation of sand for refuse landfill-attapulgite vertical impermeable wall material according to claim 5
Method, it is characterised in that: in step 2), the additive amount of the water is used in sand-attapulgite backfill material of refuse landfill
Meeting the slump is 100mm~150mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810598888.1A CN109020312A (en) | 2018-06-12 | 2018-06-12 | A kind of sand for refuse landfill-attapulgite vertical impermeable wall material and its preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362663A (en) * | 2018-12-26 | 2020-07-03 | 朝阳市庆建矿业有限责任公司 | Bentonite mixed soil and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206764A (en) * | 1997-07-25 | 1999-02-03 | 建设部城市建设研究院 | Method of anti-permeation for power jet curtain wall of refuse sanitary burying field |
| CN1429952A (en) * | 2003-02-12 | 2003-07-16 | 中冶地勘察基础工程有限公司 | Application of water injection method for making plastic concrete leakage proof wall in garbage sanitary embedding field |
| CN1827728A (en) * | 2006-02-15 | 2006-09-06 | 卫永法 | Impermeable materials for coating or sealing of garbage hygiene fills |
| CN101456688A (en) * | 2008-12-31 | 2009-06-17 | 浙江工业大学 | Novel rubbish landfill yard anti-seepage material |
| CN103951347A (en) * | 2014-04-17 | 2014-07-30 | 常州工学院 | Refuse landfill seepage-proofing slurry material and preparation method thereof |
| CN104058662A (en) * | 2014-06-13 | 2014-09-24 | 长江勘测规划设计研究有限责任公司 | Anti-seepage composite grouting material for underground nuclear power station and application of grouting material |
| CN107246033A (en) * | 2017-07-30 | 2017-10-13 | 扬州大学 | A kind of sand clay for refuse landfill base impervious cracking resistance mixes pad |
-
2018
- 2018-06-12 CN CN201810598888.1A patent/CN109020312A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1206764A (en) * | 1997-07-25 | 1999-02-03 | 建设部城市建设研究院 | Method of anti-permeation for power jet curtain wall of refuse sanitary burying field |
| CN1429952A (en) * | 2003-02-12 | 2003-07-16 | 中冶地勘察基础工程有限公司 | Application of water injection method for making plastic concrete leakage proof wall in garbage sanitary embedding field |
| CN1827728A (en) * | 2006-02-15 | 2006-09-06 | 卫永法 | Impermeable materials for coating or sealing of garbage hygiene fills |
| CN101456688A (en) * | 2008-12-31 | 2009-06-17 | 浙江工业大学 | Novel rubbish landfill yard anti-seepage material |
| CN103951347A (en) * | 2014-04-17 | 2014-07-30 | 常州工学院 | Refuse landfill seepage-proofing slurry material and preparation method thereof |
| CN104058662A (en) * | 2014-06-13 | 2014-09-24 | 长江勘测规划设计研究有限责任公司 | Anti-seepage composite grouting material for underground nuclear power station and application of grouting material |
| CN107246033A (en) * | 2017-07-30 | 2017-10-13 | 扬州大学 | A kind of sand clay for refuse landfill base impervious cracking resistance mixes pad |
Non-Patent Citations (1)
| Title |
|---|
| 陈振雄等: "城市生活垃圾填埋场防渗研究进展", 《广东化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111362663A (en) * | 2018-12-26 | 2020-07-03 | 朝阳市庆建矿业有限责任公司 | Bentonite mixed soil and construction method thereof |
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