CN1931774B - Stabilized soil of regenerated building residue and lime and its preparation process - Google Patents
Stabilized soil of regenerated building residue and lime and its preparation process Download PDFInfo
- Publication number
- CN1931774B CN1931774B CN2006100884489A CN200610088448A CN1931774B CN 1931774 B CN1931774 B CN 1931774B CN 2006100884489 A CN2006100884489 A CN 2006100884489A CN 200610088448 A CN200610088448 A CN 200610088448A CN 1931774 B CN1931774 B CN 1931774B
- Authority
- CN
- China
- Prior art keywords
- building residue
- regenerated building
- lime
- slaked lime
- stabilized soil
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 239000002689 soil Substances 0.000 title claims abstract description 33
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims description 24
- 235000011941 Tilia x europaea Nutrition 0.000 title claims description 24
- 239000004571 lime Substances 0.000 title claims description 24
- 238000002360 preparation method Methods 0.000 title claims description 11
- 239000000463 material Substances 0.000 claims abstract description 32
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 29
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 29
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 29
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 29
- 239000004927 clay Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 10
- 230000000996 additive effect Effects 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 8
- 239000012467 final product Substances 0.000 claims description 7
- 239000000395 magnesium oxide Substances 0.000 claims description 7
- 238000007580 dry-mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910052791 calcium Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 239000011449 brick Substances 0.000 claims description 2
- 239000011083 cement mortar Substances 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 238000013467 fragmentation Methods 0.000 claims description 2
- 238000006062 fragmentation reaction Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims 2
- 238000002156 mixing Methods 0.000 claims 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 239000007832 Na2SO4 Substances 0.000 abstract 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 229910052938 sodium sulfate Inorganic materials 0.000 abstract 1
- 235000011152 sodium sulphate Nutrition 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 235000019738 Limestone Nutrition 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000006028 limestone Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The stabilized soil consists of building residue as aggregate 50-80 wt%, slaked lime 4-20 wt% and clay 15-40 wt%, and has water in 15-20 wt% of the three above said materials and admixture in 0-2 wt% of slaked lime. The admixture is compounded with Na2SO4 in 40-60 wt% and Na2CO3 in 40-60 wt%. The stabilized soil has high strength, less dry shrinkage deformation and environment friendship, and maybe used in different road engineering.
Description
Technical field
What the present invention relates to is regenerated building residue lime stabilized soil and preparation method thereof, belongs to the pavement construction material technical field.
Background technology
The quick growth of population and Development of Cities cause the key city construction industry to develop rapidly, all have every day old building to be pushed down dismounting, and consequent building waste is more and more, and the urban life environment is caused severe contamination.The common method of handling the room slag at present is a landfill, not only wastes resource, contaminate environment, destruction environment, also can take a large amount of soils.
In addition,,, will make phenomenons such as ftracture easily in the road surface, displacement, greatly shorten the work-ing life of road so adopt clay to prepare roadbase and the employed material of subbase because clay has characteristics such as water stability is poor, distortion is big.Improving soft soil roadbed stability method commonly used is to adopt semi-rigid material (inorganic binder), but some material water is rigid very little, can not really improve the stability of roadbed, and adopts the inorganic binder cost of natural aggregate preparation higher.
Moreover a large amount of uses of clay cause land resources waste, energy dissipation and environmental pollution.
Summary of the invention
The present invention will solve is exactly the problem that above-mentioned prior art exists, and a kind of landfill problem that both can solve the room slag of proposition can improve the stability of roadbed again, can save regenerated building residue lime stabilized soil of natural aggregate and clay resource and preparation method thereof simultaneously.
The present invention is formulated by mass percentage by following material:
Regenerated building residue gathers materials: 50%～80%;
Slaked lime: 4%～20%;
Clay: 15%～40%;
Above material calculates by the quality percentage composition, and its summation is 100%;
Water: 15%～20% of the total mass of above-mentioned three kinds of materials under drying regime;
Special additive: 0%～2% of the total mass of slaked lime, this special additive is by Na
2SO
4And Na
2CO
3Formulated by following mass ratio: Na
2SO
4: Na 40%～60%,
2CO
3: 40%～60%.
The content of special additive is to calculate according to the mass percent of the quality of special additive and slaked lime.
The preferred proportioning of each component of the present invention is as follows
Regenerated building residue gathers materials: 60%～80%;
Slaked lime: 4%～12%;
Clay: 15%～30%;
Above material calculates by the quality percentage composition, and its summation is 100%;
Water: 15%～18% of the total mass of above-mentioned three kinds of materials under drying regime;
Special additive: 1%～2% of the total mass of slaked lime.
Particle diameter was that the ratio of the aggregate quality of 0～5mm and 5～40mm is preferably 2: 1 during regenerated building residue of the present invention gathered materials
Each raw-material quality requirements of the present invention is as follows:
Regenerated building residue gathers materials: grain fraction is the content 55%～75% of particle diameter 0～5mm, the content 25%～45% of particle diameter 5～40mm; Crush values is not more than 35%; Organic content should be not more than 10%.
Aforementioned regenerated building residue gather materials be by the removal that obtains behind the demolishing buildings pieces bits mixtures such as the waste cement mortar piece behind foreign organic matter and the metal, useless brick and waste concrete be processed into through fragmentation.
It is one of following two kinds that slaked lime can adopt:
Calcareous slaked lime (being content of magnesia≤4%): effectively calcium adds the tailing over of oxidation Mg content 〉=55%, water content≤4%, 0.71mm square hole sieve≤1%;
Magnesia slaked lime (being content of magnesia＞4%): effectively calcium adds the tailing over of oxidation Mg content 〉=50%, water content≤4%, 0.71mm square hole sieve≤1%.
Clay: plasticity index is 15～20, and sulphate content is no more than 0.8%, and organic content is no more than 10%, and water content is no more than 10%.
Water: drinkable water.
Preparation method of the present invention is: regenerated building residue, slaked lime and clay are poured in the stirrer in proportion, and first dry mixing 3～5min adds entry then in proportion, and stirring gets final product.
Beneficial effect of the present invention
(1) after the regenerated building residue lime stabilized soil is used for roadbase and subbase construction, can improve road quality, reduce maintenance cost, increase the service life.
(2) the 7d unconfined compression strength of regenerated building residue lime stabilized soil is far above the intensity with the proportioning limestone soil, and dry-shrinkage deformedly significantly reduces, and can be widely used in the construction of various highway subbases and secondary and the following road base layer of secondary.
(3) utilize regenerated building residue to prepare lime stabilized soil, can reclaim and efficiently utilize building waste in a large number, reduce shared soil of room slag landfill and transportation, landfill cost, economize on resources and the energy, help ecological environmental protection.
Embodiment
Embodiment 1
Each set of dispense is such as following:
Regenerated building residue gathers materials:
0～5mm：2326g
5～40mm：1163g
Slaked lime: 278g
Clay: 872g
Water: 714g
Zhi Bei the regenerated building residue lime stabilized soil that gathers materials according to the above ratio:
Optimum moisture content: 15.4%
Maximum dry density: 1.75g/cm
3
7d unconfined compression strength: 1.62MPa
(requirement of strength 〉=0.8MPa of highway road surface construction technique normalizing JTJ034-2000 regulation motorway and Class I highway subbase lime stabilized soil, and the requirement of strength of the following road base layer lime stabilized soil of secondary and secondary 〉=0.8MPa)
The average coefficient of shrinkage behind the health 7d and ratio: 1: 4.96 with the limestone soil of proportioning
Water-intake rate: 17.47%
Embodiment 2
Each set of dispense is such as following:
Regenerated building residue gathers materials:
0～5mm：1926g
5～40mm：963g
Slaked lime: 459g
Clay: 1238g
Water: 759g
Zhi Bei the regenerated building residue lime stabilized soil that gathers materials according to the above ratio:
Optimum moisture content: 16.55%
Maximum dry density: 1.73g/cm
3
7d unconfined compression strength: 1.53MPa
The average coefficient of shrinkage behind the health 7d and ratio: 1: 4.84 with the limestone soil of proportioning
Water-intake rate: 18.37%
Embodiment 3
Each set of dispense is such as following:
Regenerated building residue gathers materials:
0～5mm：2035g
5～40mm：1018g
Slaked lime: 278g
Clay: 1308g
Water: 754g
Special additive:
N
a2SO
4：1.4g
N
a2CO
3：1.4g
Zhi Bei regenerated building residue lime stabilized soil according to the above ratio:
Optimum moisture content: 16.25%
Maximum dry density: 1.75g/cm
3
7d unconfined compression strength: 2.34MPa
The average coefficient of shrinkage behind the health 7d and ratio: 1: 4.62 with the limestone soil of proportioning
Water-intake rate: 18.17%
Embodiment 4
Each set of dispense is such as following:
Regenerated building residue gathers materials:
0～5mm：2250g
5～40mm：1125g
Slaked lime: 367g
Clay: 844g
Water: 738g
Special additive:
N
a2SO
4：1.84g
N
a2CO
3：1.84g
Zhi Bei regenerated building residue lime stabilized soil according to the above ratio:
Optimum moisture content: 16.10%
Maximum dry density: 1.73g/cm
3
7d unconfined compression strength: 2.53MPa
Water-intake rate: 17.30%
Claims (11)
1. regenerated building residue lime stabilized soil is characterized in that it is formulated by mass ratio by following component:
Regenerated building residue gathers materials: 50%～80%;
Slaked lime: 4%～20%;
Clay: 15%～40%;
Above material calculates by the quality percentage composition, and its summation is 100%;
Water: 15%～20% of the total mass of above-mentioned three kinds of materials under drying regime;
Special additive: 0%～2% of the total mass of slaked lime, this special additive is by Na
2SO
4And Na
2CO
3Formulated by following mass ratio: Na
2SO
4: Na 40%～60%,
2CO
3: 40%～60%;
Aforementioned regenerated building residue gather materials be by the removal that obtains behind the demolishing buildings waste cement mortar piece behind foreign organic matter and the metal, useless brick and waste concrete piece bits mixture be processed into through fragmentation, the granule content of particle diameter between 0～5mm is 55%～75% in this regenerated aggregate, and the granule content of particle diameter between 5～40mm is 25%～45%; Crush values is not more than 35%, and organic content should be not more than 10%.
2. regenerated building residue lime stabilized soil according to claim 1 is characterized in that the proportioning of each component is as follows:
Regenerated building residue gathers materials: 60%～80%;
Slaked lime: 4%～12%;
Clay: 15%～30%;
Above material calculates by the quality percentage composition, and its summation is 100%;
Water: 15%～18% of the total mass of above-mentioned three kinds of materials under drying regime;
Special additive: 1%～2% of the total mass of slaked lime.
3. regenerated building residue lime stabilized soil according to claim 1 and 2 is characterized in that the regenerated building residue aggregate size is that 0～5mm and particle diameter are that the aggregate quality ratio of 5～40mm is 2: 1.
4. regenerated building residue lime stabilized soil according to claim 1 and 2 is characterized in that slaked lime adopts the calcareous slaked lime of content of magnesia≤4% or the magnesia slaked lime of content of magnesia＞4%; In the calcareous slaked lime effectively calcium add the tailing over of oxidation Mg content 〉=55%, water content≤4%, 0.71mm square hole sieve≤1%; In the magnesia slaked lime effectively calcium add the tailing over of oxidation Mg content 〉=50%, water content≤4%, 0.71mm square hole sieve≤1%.
5. regenerated building residue lime stabilized soil according to claim 1 and 2 is characterized in that the plasticity index of described clay is 15～20, and sulphate content is no more than 0.8%, and organic content is no more than 10%, and water content is no more than 10%.
6. regenerated building residue lime stabilized soil according to claim 1 and 2 is characterized in that mixing water adopts drinkable water to get final product.
7. the preparation method of regenerated building residue lime stabilized soil according to claim 1 and 2, it is characterized in that with regenerated building residue gather materials, slaked lime and clay pour in the stirrer in proportion, first dry mixing 3～5min adds entry then in proportion, stirring gets final product.
8. the preparation method of regenerated building residue lime stabilized soil according to claim 3, it is characterized in that with regenerated building residue gather materials, slaked lime and clay pour in the stirrer in proportion, first dry mixing 3～5min adds entry then in proportion, stirring gets final product.
9. the preparation method of regenerated building residue lime stabilized soil according to claim 4, it is characterized in that with regenerated building residue gather materials, slaked lime and clay pour in the stirrer in proportion, first dry mixing 3～5min adds entry then in proportion, stirring gets final product.
10. the preparation method of regenerated building residue lime stabilized soil according to claim 5, it is characterized in that with regenerated building residue gather materials, slaked lime and clay pour in the stirrer in proportion, first dry mixing 3～5min adds entry then in proportion, stirring gets final product.
11. the preparation method of regenerated building residue lime stabilized soil according to claim 6, it is characterized in that with regenerated building residue gather materials, slaked lime and clay pour in the stirrer in proportion, first dry mixing 3～5min adds entry then in proportion, stirring gets final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100884489A CN1931774B (en) | 2006-08-24 | 2006-08-24 | Stabilized soil of regenerated building residue and lime and its preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100884489A CN1931774B (en) | 2006-08-24 | 2006-08-24 | Stabilized soil of regenerated building residue and lime and its preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1931774A CN1931774A (en) | 2007-03-21 |
| CN1931774B true CN1931774B (en) | 2010-08-18 |
Family
ID=37877821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100884489A Expired - Fee Related CN1931774B (en) | 2006-08-24 | 2006-08-24 | Stabilized soil of regenerated building residue and lime and its preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1931774B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400084A (en) * | 2018-12-07 | 2019-03-01 | 西南科技大学 | A kind of high solid waste alkali-activated carbonatite mentions titanium slag and stablizes soil and preparation method thereof |
| GB2613146A (en) * | 2021-11-17 | 2023-05-31 | Shangdong Univ | A kind of regenerative cement soil used for roadbed top |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102531437A (en) * | 2011-12-29 | 2012-07-04 | 东南大学 | Tailing sand two-component soil pavement sub-base layer mixture and preparation method thereof |
| CN103553493B (en) * | 2013-10-17 | 2015-09-30 | 北京新奥混凝土集团有限公司 | Building waste micro mist comprehensive stable soil |
| CN108314346A (en) * | 2018-01-26 | 2018-07-24 | 长安大学 | A kind of building castoff regeneration roadbed gathers materials and preparation method and method of evaluating performance |
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| CN1384078A (en) * | 2002-06-25 | 2002-12-11 | 许福生 | Method of producing building material with building sludge |
| CN1473787A (en) * | 2003-08-09 | 2004-02-11 | 同济大学 | Inorganic regenerated concrete mixture and its preparing method |
| CN1654404A (en) * | 2005-01-19 | 2005-08-17 | 南京都市废弃物综合利用开发有限公司 | Reclaimed concrete aggregate two-ash broken stones |
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2006
- 2006-08-24 CN CN2006100884489A patent/CN1931774B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN1384078A (en) * | 2002-06-25 | 2002-12-11 | 许福生 | Method of producing building material with building sludge |
| CN1473787A (en) * | 2003-08-09 | 2004-02-11 | 同济大学 | Inorganic regenerated concrete mixture and its preparing method |
| CN1654404A (en) * | 2005-01-19 | 2005-08-17 | 南京都市废弃物综合利用开发有限公司 | Reclaimed concrete aggregate two-ash broken stones |
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| 商庆森、刘树堂.影响石灰与二灰稳定细粒土强度因素的分析.公路交通科技17 6.2002,17(6),26-29. * |
| 熊保恒、陆春、郭洪福.高速公路石灰粉煤灰稳定土底基层的机械化施工.筑路机械与施工机械化18 3.2001,18(3),46-50. * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109400084A (en) * | 2018-12-07 | 2019-03-01 | 西南科技大学 | A kind of high solid waste alkali-activated carbonatite mentions titanium slag and stablizes soil and preparation method thereof |
| CN109400084B (en) * | 2018-12-07 | 2021-09-28 | 西南科技大学 | High-solid waste alkali-activated titanium slag extraction stabilized soil and preparation method thereof |
| GB2613146A (en) * | 2021-11-17 | 2023-05-31 | Shangdong Univ | A kind of regenerative cement soil used for roadbed top |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1931774A (en) | 2007-03-21 |
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Granted publication date: 20100818 |