CN1843987A - Construction method by utilizing solidified earth from sludge - Google Patents
Construction method by utilizing solidified earth from sludge Download PDFInfo
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- CN1843987A CN1843987A CNA2006100400936A CN200610040093A CN1843987A CN 1843987 A CN1843987 A CN 1843987A CN A2006100400936 A CNA2006100400936 A CN A2006100400936A CN 200610040093 A CN200610040093 A CN 200610040093A CN 1843987 A CN1843987 A CN 1843987A
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- sludge
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- solidified earth
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- 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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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a construction method of solidifying soil with sludge, concretely relates to a construction method of laying road, building levee or stuffing mulde with sludge. The method has the following steps: (1) dehydrating sludge dug, making its moisture content being 40%-60% by weight and approaching liquid limit; (2) adding cement and coal ash into dehydrated sludge; wherein: 50-100kg cement and 50-150kg coal ash per cubic meter; (3) stirring for intimate mixing for 30-80s, to get solidified sludge soil; (4) stacking the solidified sludge soil for 2-3 days, to make the soil go on with solidifying reaction, when the soil having early strength and being laid with machines, stratifing the soil and lying it on roadbed, levee and mulde, rolling it with machines. The method can save farmland, avoid environmental pollution.
Description
(1) technical field
The present invention relates to a kind of engineering construction method.Be the constructional method that adopts the mud laying road, builds dykes and dams or fill out the low lowland in shop specifically.
(2) background technology
As everyone knows, all deposit a large amount of mud in the rivers,lakes and seas.As not dredging processing, the riverbed is improved constantly, thereby reduce its water storage, anti-flood capacity.According to statistics, only the annual riverway sludge of dredging that needs of Wuxi City just has ten thousand stere more than 200.So how Duo dredging silt is handled, and has become a great problem of hydraulic department.Traditional method is dredging silt to be abandoned nearby bury.Adopt to abandon nearby and bury,, can take a large amount of arable lands, and pollute the environment though can solve the handling problem of dredging silt.
(3) summary of the invention
The problem to be solved in the present invention provides a kind of constructional method of utilizing solidified earth from sludge.In this way dredging silt is handled, can be saved the arable land, avoid pollution environment.
For addressing the above problem, the present invention takes following technical scheme:
The characteristics of utilizing solidified earth from sludge constructional method of the present invention are to contain following steps:
(1) earlier the mud that digs out is carried out processed, the weight percentage that makes its water content is 40%～60%, and near liquid limit;
(2) in through the mud of dehydration, add cement and flyash again; Wherein: in every cubic metre the mud, the add-on of cement is that the add-on of 50～100kg, flyash is 50～150kg;
(3) afterwards, stirred for 30～80 seconds, carry out uniform mixing, obtain the solidified silt soil;
(4) again after, the solidified silt soil was stacked 2～3 days, make it continue curing reaction, have early strength, when can machinery paving, its layering can be paved on the ground, and roll with mechanical layering at roadbed, dykes and dams or indentation.Every layer of paving thickness of utilizing solidified earth from sludge is 20～30cm.
After paving at solidified silt soil outermost layer, rolling end, its surface also is coated with protective layer.This protective layer is clay, faggot or plastic film.
When adding cement and flyash, also can add gypsum.Wherein, in every cubic metre the mud, the add-on of gypsum is 2～15kg.
When adding cement, flyash and gypsum, also can add super strength water absorbent.Wherein: in every cubic metre of mud, the add-on of super strength water absorbent is 0.3～1.5kg.Said super strength water absorbent be starch be water-retaining agent, cellulose-based water-retaining agent or synthetic be in the water-retaining agent any one.
Said starch be water-retaining agent be starch graft acrylic acid, cellulose-based water-retaining agent be cellulose graft vinylformic acid, synthetic be that water-retaining agent is the polyacrylic acid water-absorbing resin.
Adopt such scheme, have the following advantages:
Owing to adopt utilizing solidified earth from sludge constructional method of the present invention, the dredging silt in the rivers,lakes and seas can be used for road pavement, dykes and dams are built or hang down lowland and fill and lead up, and have not only solved the processing difficult problem of dredging silt, also can save the arable land, avoid environment is polluted.
Embodiment
Embodiment one:
Elder generation digs out mud from Taihu Lake (or other rivers,lakes and seas), and removes wherein block and club class impurity;
Afterwards, the mud that does not contain block and club class impurity is deposited in together, by the natural subsidence and the evaporation of moisture, the weight percentage that makes its water content is 40% and near liquid limit.
Afterwards, be 40% with the weight percentage of water content and drop in the agitator, and add cement and flyash, stirred for 30～80 seconds, carry out uniform mixing, obtain the solidified silt soil near the mud of liquid limit; Wherein: in every cubic metre of mud, the add-on of cement is that the add-on of 50kg, flyash is 50kg;
Afterwards, the solidified silt soil was stacked 2～3 days, allowed it continue curing reaction.When it has early strength, in the time of can using machinery to pave, its layering can be paved on roadbed.
Whenever pave behind one deck solidified silt soil, roll 6～8 times, carry out compaction treatment with 5 tons of sheep-foot rollers; Wherein: the thickness of every layer of utilizing solidified earth from sludge is 20～30cm, and the edge gradient is 1: 1.2;
At last, cover on the solidified silt soil the superiors outside surface, prevent the too fast evaporation of moisture with clay.As high temperature drying season, also need in the maintenance 3～10 days of sprinkling water of solidified silt soil outside surface.
For further improving solidified silt soil intensity, when adding cement and flyash, also can add gypsum.Wherein, in every cubic metre of mud, the add-on of gypsum is 3kg.
For further improving solidified silt soil intensity, when adding cement, flyash and gypsum, also can add super strength water absorbent.In every cubic metre of mud, the add-on of super strength water absorbent is 0.5kg.Super strength water absorbent wherein is that starch is water-retaining agent, and this starch is that water-retaining agent is a starch graft acrylic acid.
Embodiment two:
Elder generation digs out mud from Taihu Lake (or other rivers,lakes and seas), and removes wherein block and club class impurity;
Afterwards, the mud that does not contain block and club class impurity is deposited in together, by the natural subsidence and the evaporation of moisture, the weight percentage that makes its water content is 50% and near liquid limit.
Afterwards, be 50% with the weight percentage of water content and drop in the agitator, and add cement and flyash, stirred for 30～80 seconds, carry out uniform mixing, obtain the solidified silt soil near the mud of liquid limit; Wherein: in every cubic metre of mud, the add-on of cement is that the add-on of 75kg, flyash is 95kg;
Afterwards, the solidified silt soil was stacked 2～3 days, allowed it continue curing reaction.When it has early strength, in the time of can using machinery to pave, its layering can be paved on dykes and dams.
Whenever pave behind one deck solidified silt soil, roll 6～8 times, carry out compaction treatment with 5 tons of sheep-foot rollers; Wherein: the thickness of every layer of utilizing solidified earth from sludge is 20～30cm, and the edge gradient is 1: 1.2;
At last, cover on the solidified silt soil the superiors outside surface, prevent the too fast evaporation of moisture with faggot.As high temperature drying season, also need in the maintenance 3～10 days of sprinkling water of solidified silt soil outside surface.
For further improving solidified silt soil intensity, when adding cement and flyash, also can add gypsum.Wherein, in every cubic metre of mud, the add-on of gypsum is 8kg.
For further improving solidified silt soil intensity, when adding cement, flyash and gypsum, also can add super strength water absorbent.In every cubic metre of mud, the add-on of super strength water absorbent is 1.0kg.Super strength water absorbent wherein is cellulose-based water-retaining agent, and this cellulose-based water-retaining agent is a cellulose graft vinylformic acid.
Embodiment three:
Elder generation digs out mud from Taihu Lake (or other rivers,lakes and seas), and removes wherein block and club class impurity;
Afterwards, the mud that does not contain block and club class impurity is deposited in together, by the natural subsidence and the evaporation of moisture, the weight percentage that makes its water content is 60% and near liquid limit.
Afterwards, be 60% with the weight percentage of water content and drop in the agitator, and add cement and flyash, stirred for 30～80 seconds, carry out uniform mixing, obtain the solidified silt soil near the mud of liquid limit; Wherein: in every cubic metre of mud, the add-on of cement is that the add-on of 100kg, flyash is 150kg;
Afterwards, the solidified silt soil was stacked 2～3 days, allowed it continue curing reaction.When it has early strength, in the time of can using machinery to pave, its layering can be paved at indentation on the ground;
Whenever pave behind one deck solidified silt soil, roll 6～8 times, carry out compaction treatment with 5 tons of sheep-foot rollers; Wherein: the thickness of every layer of utilizing solidified earth from sludge is 20～30cm, and the edge gradient is 1: 1.2;
At last, cover on the solidified silt soil the superiors outside surface, prevent the too fast evaporation of moisture with plastic film.As high temperature drying season, also need in the maintenance 3～10 days of sprinkling water of solidified silt soil outside surface.
For further improving solidified silt soil intensity, when adding cement and flyash, also can add gypsum.Wherein, in every cubic metre of mud, the add-on of gypsum is 14kg.
For further improving solidified silt soil intensity, when adding cement, flyash and gypsum, also can add super strength water absorbent.In every cubic metre of mud, the add-on of super strength water absorbent is 1.5kg.Super strength water absorbent wherein be synthetic be water-retaining agent, this is synthetic to be that water-retaining agent is the polyacrylic acid water-absorbing resin.
Claims (9)
1. the constructional method of utilizing solidified earth from sludge is characterized in that containing following steps:
(1) earlier the mud that digs out is carried out processed, the weight percentage that makes its water content is 40%～60%, and near liquid limit;
(2) in through the mud of dehydration, add cement and flyash again; Wherein: in every cubic metre the mud, the add-on of cement is that the add-on of 50～100kg, flyash is 50～150kg;
(3) afterwards, stirred for 30～80 seconds, carry out uniform mixing, obtain the solidified silt soil;
(4) again after, the solidified silt soil was stacked 2～3 days, make it continue curing reaction, have early strength, when can machinery paving, its layering can be paved on the ground, and roll with mechanical layering at roadbed, dykes and dams or indentation.
2.. the constructional method of utilizing solidified earth from sludge according to claim 1, it is characterized in that solidified silt soil outermost layer paves, rolls end after, its surface coverage matcoveredn.
3. the constructional method of utilizing solidified earth from sludge according to claim 2 is characterized in that said protective layer is a clay.
4. the constructional method of utilizing solidified earth from sludge according to claim 2 is characterized in that said protective layer is a faggot.
5. the constructional method of utilizing solidified earth from sludge according to claim 2 is characterized in that said protective layer is a plastic film.
6. the constructional method of utilizing solidified earth from sludge according to claim 1 is characterized in that also can adding gypsum when adding cement and flyash; Wherein, in every cubic metre the mud, the add-on of gypsum is 2～15kg.
7. the constructional method of utilizing solidified earth from sludge according to claim 6 is characterized in that also can adding super strength water absorbent when adding cement, flyash and gypsum; Wherein: in every cubic metre of mud, the add-on of super strength water absorbent is 0.3～1.5kg; Said super strength water absorbent be starch be water-retaining agent, cellulose-based water-retaining agent or synthetic be in the water-retaining agent any one.
8. the constructional method of utilizing solidified earth from sludge according to claim 7, it is characterized in that starch be water-retaining agent be starch graft acrylic acid, cellulose-based water-retaining agent be cellulose graft vinylformic acid, synthetic be that water-retaining agent is the polyacrylic acid water-absorbing resin.
9. according to the constructional method of the described utilizing solidified earth from sludge of arbitrary claim in the claim 1～8, the every layer of paving thickness that it is characterized in that utilizing solidified earth from sludge is 20～30cm.
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| CNB2006100400936A CN100478290C (en) | 2006-04-26 | 2006-04-26 | Construction method by utilizing solidified earth from sludge |
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| CNB2006100400936A CN100478290C (en) | 2006-04-26 | 2006-04-26 | Construction method by utilizing solidified earth from sludge |
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| CN100478290C CN100478290C (en) | 2009-04-15 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020991A (en) * | 2010-11-08 | 2011-04-20 | 东南大学 | Soil cement compound additive for soft soil region with high water content |
| CN101607782B (en) * | 2009-07-10 | 2011-07-20 | 黑旋风工程机械开发有限公司 | Waste jet grouting cement paste fast dewatering method and device thereof |
| CN102173695A (en) * | 2011-01-10 | 2011-09-07 | 东南大学 | Novel composite additive for solidifying material for dredged silt with high water content |
| CN102241501A (en) * | 2011-05-19 | 2011-11-16 | 江苏聚慧科技有限公司 | Silt quickly solidifying material |
| CN102477711A (en) * | 2010-11-29 | 2012-05-30 | 中冶天工集团有限公司 | Muddy subgrade soil and preparation method thereof |
| CN102976586A (en) * | 2012-12-19 | 2013-03-20 | 天津生态城环保有限公司 | Silt curing agent containing industrial waste carbide slag and curing method |
| CN104692771A (en) * | 2015-03-12 | 2015-06-10 | 北京元泰达环保建材科技有限责任公司 | Road paving material prepared from construction waste composite sludge and preparation method of road paving material |
| CN104912038A (en) * | 2015-06-03 | 2015-09-16 | 广东省生态环境与土壤研究所 | Construction device for treating polluted bottom mud of river |
| CN105149316A (en) * | 2015-07-03 | 2015-12-16 | 浙江理工大学 | Stacking and capacity increasing method for landfill by building storage cavern through solidified municipal sludge |
| CN106542278A (en) * | 2015-09-18 | 2017-03-29 | 山东浩海疏浚装备有限公司 | A kind of integral type dehydrating and curing waggon |
| CN106904916A (en) * | 2017-03-20 | 2017-06-30 | 深圳宏业基岩土科技股份有限公司 | One kind fills out extra large cofferdam mold bag curing soil and its preparation method and application method |
| CN107245920A (en) * | 2017-06-22 | 2017-10-13 | 福州大学 | A kind of composite modifying method of durability high liquid limit soil roadbed filling |
| CN107459249A (en) * | 2017-08-28 | 2017-12-12 | 西安理工大学 | A kind of curing of river silt |
| CN111423159A (en) * | 2020-03-05 | 2020-07-17 | 河海大学 | Resource utilization method for high-water-content sludge |
| CN111622208A (en) * | 2020-06-12 | 2020-09-04 | 中铁隧道局集团有限公司 | Construction method for filling adjacent roadbed by in-situ solidified sludge of rail-to-subway foundation pit |
| CN111704384A (en) * | 2020-06-23 | 2020-09-25 | 宁波夯涌科技环保有限公司 | Liquid stabilizer for engineering building muck and mud solidified soil and use method thereof |
-
2006
- 2006-04-26 CN CNB2006100400936A patent/CN100478290C/en active Active
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101607782B (en) * | 2009-07-10 | 2011-07-20 | 黑旋风工程机械开发有限公司 | Waste jet grouting cement paste fast dewatering method and device thereof |
| CN102020991A (en) * | 2010-11-08 | 2011-04-20 | 东南大学 | Soil cement compound additive for soft soil region with high water content |
| CN102477711A (en) * | 2010-11-29 | 2012-05-30 | 中冶天工集团有限公司 | Muddy subgrade soil and preparation method thereof |
| CN102477711B (en) * | 2010-11-29 | 2013-12-25 | 中冶天工集团有限公司 | Muddy subgrade soil and preparation method thereof |
| CN102173695A (en) * | 2011-01-10 | 2011-09-07 | 东南大学 | Novel composite additive for solidifying material for dredged silt with high water content |
| CN102241501A (en) * | 2011-05-19 | 2011-11-16 | 江苏聚慧科技有限公司 | Silt quickly solidifying material |
| CN102976586A (en) * | 2012-12-19 | 2013-03-20 | 天津生态城环保有限公司 | Silt curing agent containing industrial waste carbide slag and curing method |
| CN104692771A (en) * | 2015-03-12 | 2015-06-10 | 北京元泰达环保建材科技有限责任公司 | Road paving material prepared from construction waste composite sludge and preparation method of road paving material |
| CN104692771B (en) * | 2015-03-12 | 2016-10-26 | 北京元泰达环保科技有限公司 | It is combined prepared road pavements of mud and preparation method thereof with building waste |
| CN104912038A (en) * | 2015-06-03 | 2015-09-16 | 广东省生态环境与土壤研究所 | Construction device for treating polluted bottom mud of river |
| CN105149316B (en) * | 2015-07-03 | 2016-05-18 | 浙江理工大学 | The curing municipal sludge of a kind of use builds the landfill yard of bank and piles high compatibilizing method |
| CN105149316A (en) * | 2015-07-03 | 2015-12-16 | 浙江理工大学 | Stacking and capacity increasing method for landfill by building storage cavern through solidified municipal sludge |
| CN106542278A (en) * | 2015-09-18 | 2017-03-29 | 山东浩海疏浚装备有限公司 | A kind of integral type dehydrating and curing waggon |
| CN106904916A (en) * | 2017-03-20 | 2017-06-30 | 深圳宏业基岩土科技股份有限公司 | One kind fills out extra large cofferdam mold bag curing soil and its preparation method and application method |
| CN107245920A (en) * | 2017-06-22 | 2017-10-13 | 福州大学 | A kind of composite modifying method of durability high liquid limit soil roadbed filling |
| CN107459249A (en) * | 2017-08-28 | 2017-12-12 | 西安理工大学 | A kind of curing of river silt |
| CN107459249B (en) * | 2017-08-28 | 2021-02-12 | 西安理工大学 | Method for solidifying river sludge |
| CN111423159A (en) * | 2020-03-05 | 2020-07-17 | 河海大学 | Resource utilization method for high-water-content sludge |
| CN111622208A (en) * | 2020-06-12 | 2020-09-04 | 中铁隧道局集团有限公司 | Construction method for filling adjacent roadbed by in-situ solidified sludge of rail-to-subway foundation pit |
| CN111622208B (en) * | 2020-06-12 | 2022-03-29 | 中铁隧道局集团有限公司 | Construction method for filling adjacent roadbed by in-situ solidified sludge of rail-to-subway foundation pit |
| CN111704384A (en) * | 2020-06-23 | 2020-09-25 | 宁波夯涌科技环保有限公司 | Liquid stabilizer for engineering building muck and mud solidified soil and use method thereof |
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| Publication number | Publication date |
|---|---|
| CN100478290C (en) | 2009-04-15 |
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