CN100431999C - Mixed material of regenerated building residue and its prepn process - Google Patents
Mixed material of regenerated building residue and its prepn process Download PDFInfo
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- CN100431999C CN100431999C CNB2006100884493A CN200610088449A CN100431999C CN 100431999 C CN100431999 C CN 100431999C CN B2006100884493 A CNB2006100884493 A CN B2006100884493A CN 200610088449 A CN200610088449 A CN 200610088449A CN 100431999 C CN100431999 C CN 100431999C
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- CN
- China
- Prior art keywords
- building residue
- regenerated building
- mixed material
- content
- slaked lime
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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
Abstract
The mixed material of regenerated building residue consists of regenerated building residue as aggregate in 55-85 wt%, slaked lime in 2-20 wt%, treated fly ash in 2-10 wt% and fly ash in 8-30 wt%, and has water in 15-25 wt% of the four above said materials. The mixed material of regenerated building residue has the features of high strength, high stability, high deformation resistance and environment friendship, and may be used in different road engineering.
Description
Technical field
What the present invention relates to is a kind of mixed material of regenerated building residue that utilizes preparations such as pre-treating fly ash, regenerated building residue and preparation method thereof, belongs to the pavement construction material technical field.
Background technology
The quick growth and the Development of Cities of inlet 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, because clay has characteristics such as water stability is poor, distortion is big,, greatly shortened the work-ing life of road so the employing clay prepares roadbase and subbase can make phenomenons such as ftracture easily in the road surface, displacement.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 adopt the inorganic binder cost of natural aggregate preparation higher, and cut into a mountain for quarrying and cause the havoc of natural ecological environment.
Moreover the early strength of two grey stabilized base materials is lower, can affect to construction.
Summary of the invention
What 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 and a kind of mixed material of regenerated building residue of early strength and preparation method thereof again.
The present invention is formulated by mass percentage by following material:
Regenerated building residue gathers materials: 55～85%
Slaked lime: 2～20%
Pre-treating fly ash: 2～10%
Flyash: 8%～30%
Above material calculates by the quality percentage composition, and its summation should be 100%;
Water: 15～25%
The content of water is according to the quality of water and the percentage calculation of the total mass of above-mentioned three kinds of materials under drying regime.
The preferred proportioning of above-mentioned each component is as follows:
Regenerated building residue gathers materials: 75～85%
Slaked lime: 3～10%
Pre-treating fly ash: 3～8%
Flyash: 8%～14%
Above material calculates by the quality percentage composition, and its summation should be 100%, and the mass ratio of slaked lime and pre-treating fly ash and flyash sum is preferably 1: 2～and 1: 4;
Water: 15～20%
The content of water is according to the quality of water and the percentage calculation of the total mass of above-mentioned three kinds of materials under drying regime.
It is as follows to form each raw-material quality requirements of the present invention:
Regenerated building residue gathers materials: the content 25%～45% of grain diameter 0～5mm; The content 55%～75% of grain 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%): wherein 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%): wherein effectively calcium adds the tailing over of oxidation Mg content 〉=50%, water content≤4%, 0.71mm square hole sieve≤1%.
Flyash: S
1O
2, Al
2O
3And Fe
2O
3Total content should be greater than 70%, loss on ignition should not surpass 20%, specific surface area should be greater than 2500cm
2/ g, dry powder coal ash and wet fly-ash all can be used, and the water content of wet fly-ash should not surpass 35%.
Pre-treating fly ash: adopt lime (with C
aO meter accounts for 6%～25%), gypsum is (with SO
3Meter accounts for 2.0%～12%), flyash accounts for 65%～90%, metakaolin accounts for 1%～5%, adds the sufficient uniform mixing of water, make compact, behind the normal temperature maintenance 24h, heat to 650～950 ℃ of (maintenances 10～12h), cool off levigately, specific surface area should be greater than 2500cm
2/ g.
Water: drinkable water.
Preparation method of the present invention is as follows:
With regenerated building residue gather materials, slaked lime, flyash and pre-treating fly ash pour in the stirrer in proportion, first dry mixing 3～5min adds entry then in proportion, stirs.
The present invention has following beneficial effect:
(1) unconfined compression strength of the present invention satisfies the alternative traditional natural rock two grey calculus of code requirement far above the intensity with two grey calculus of proportioning, is widely used in the construction of different kinds of roads engineering basic unit.
(2) after the present invention is used for the roadbase construction, can improve early strength, the reduction of erection time, the road improvement quality reduces maintenance cost, increases the service life.
(3) adopt the present invention to prepare road basement material, 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：1391g
5～40mm：2087g
Slaked lime: 174g
Pre-treating fly ash: 174g
Flyash: 522g
Water: 783g
With regenerated building residue gather materials, slaked lime, flyash and pre-treating fly ash pour in the stirrer according to the above ratio, first dry mixing 3～5min adds entry then in proportion, stirs.
The technical indicator of present embodiment is as follows:
Optimum moisture content: 18%
Maximum dry density: 1.64g/cm
3
7d unconfined compression strength: 1.74MPa
(requirement of strength 〉=the 0.8MPa of highway road surface construction technique normalizing JTJ034-2000 regulation motorway and Class I highway basic unit lime industrial residue Stabilized Soil; In addition, through simultaneous test, only be 1.28MPa as if the 7d unconfined compression strength that substitutes the two-ash broken stones of pre-treating fly ash (flyash total amount 665g) with ordinary fly ash, intensity level differs and reaches 36%)
Water-intake rate: 18.66%
Embodiment 2
Each set of dispense is such as following:
Regenerated building residue gathers materials:
0～5mm：1408g
5～40mm：2112g
Slaked lime: 264g
Pre-treating fly ash: 176g
Flyash: 440g
Water: 783g
Prepare mixed material of regenerated building residue by the preparation method identical with embodiment 1, its technical indicator is as follows:
Optimum moisture content: 17.8%
Maximum dry density: 1.66g/cm
3
7d unconfined compression strength: 1.67MPa
Water-intake rate: 18.30%
Embodiment 3
Each set of dispense is such as following:
Regenerated building residue gathers materials:
0～5mm：1383g
5～40mm：2074g
Slaked lime: 173g
Pre-treating fly ash: 259g
Flyash: 432g
Water: 782g
Prepare mixed material of regenerated building residue by the preparation method identical with embodiment 1, its technical indicator is as follows:
Optimum moisture content: 18.1%
Maximum dry density: 1.63g/cm
3
7d unconfined compression strength: 1.78MPa
Water-intake rate: 18.79%
Claims (9)
1, a kind of mixed material of regenerated building residue is characterized in that it is formulated by mass percentage by following material:
Regenerated building residue gathers materials: 55～85%;
Slaked lime: 2～20%;
Pre-treating fly ash: 2～10%;
Flyash: 8%～30%;
Above material calculates by the quality percentage composition, and its summation is 100%;
Water: 15～25% of the total mass sum of above-mentioned four kinds of materials under drying regime;
Aforementioned regenerated building residue gather materials be by the removal that obtains behind the demolishing buildings regenerated aggregate be processed into through fragmentation of the waste cement mortar behind foreign organic matter and the metal, useless brick and waste concrete;
Aforementioned pre-treating fly ash adopts lime 6%～25%, with C
aO meter, gypsum 2.0%～12%, with SO
3Meter accounts for, and flyash 65%～90%, metakaolin 1%～5% add the sufficient uniform mixing of water, make compact, behind the normal temperature maintenance 24h, heats to 650～950 ℃ and keeps 10～12h, cools off levigately, and specific surface area is greater than 2500cm
2/ g.
2, mixed material of regenerated building residue according to claim 1 is characterized in that the proportioning of each component is as follows:
Regenerated building residue gathers materials: 75～85%
Slaked lime: 3～10%
Pre-treating fly ash: 3～8%
Flyash: 8%～14%
Above material calculates by the quality percentage composition, and its summation is 100%;
Water: 15～20% of the total mass sum of above-mentioned four kinds of materials under drying regime.
3, mixed material of regenerated building residue according to claim 1 and 2, the mass ratio that it is characterized in that slaked lime and pre-treating fly ash and flyash sum is 1: 2～1: 4.
4, mixed material of regenerated building residue according to claim 1 and 2 is characterized in that the granule content of regenerated building residue aggregate size between 0～5mm is 25%～45%, and the granule content of particle diameter between 5～40mm is 55%～75%.
5, mixed material of regenerated building residue according to claim 1 and 2 is characterized in that the crush values that regenerated building residue gathers materials is not more than 35%, and organic content is not more than 10%.
6, mixed material of regenerated building residue 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 aforementioned 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 aforementioned magnesia slaked lime effectively calcium add the tailing over of oxidation Mg content 〉=50%, water content≤4%, 0.71mm square hole sieve≤1%.
7, mixed material of regenerated building residue according to claim 1 and 2 is characterized in that flyash is dry powder coal ash or wet fly-ash, wherein SiO
2, Al
2O
3And Fe
2O
3Total content greater than 70%, loss on ignition is no more than 20%, specific surface area is greater than 2500cm
2/ g, the water content of wet fly-ash is no more than 35%.
8, mixed material of regenerated building residue according to claim 1 and 2 is characterized in that the hydromining drinkable water.
9, the preparation method of any described mixed material of regenerated building residue of claim 1 to 8, it is characterized in that with regenerated building residue gather materials, slaked lime, flyash and pre-treating fly ash pour in the stirrer in proportion, dry mixing 3～the 5min of elder generation adds entry then in proportion, stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100884493A CN100431999C (en) | 2006-08-24 | 2006-08-24 | Mixed material of regenerated building residue and its prepn process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100884493A CN100431999C (en) | 2006-08-24 | 2006-08-24 | Mixed material of regenerated building residue and its prepn process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1931775A CN1931775A (en) | 2007-03-21 |
| CN100431999C true CN100431999C (en) | 2008-11-12 |
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ID=37877822
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100884493A Active CN100431999C (en) | 2006-08-24 | 2006-08-24 | Mixed material of regenerated building residue and its prepn process |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108238771A (en) * | 2016-12-27 | 2018-07-03 | 越艳 | A kind of product about the admittedly solidifying agent stable regeneration aggregate of liquid |
| CN108238772A (en) * | 2016-12-27 | 2018-07-03 | 越艳 | It is a kind of about lime, flyash, admittedly solidifying agent stable regeneration aggregate product |
| CN108238747A (en) * | 2016-12-27 | 2018-07-03 | 越艳 | A kind of product about admittedly solidifying agent stable regeneration aggregate |
| CN108238770A (en) * | 2016-12-27 | 2018-07-03 | 越艳 | A kind of product about lime fly ash recycled aggregate |
| CN108996971A (en) * | 2018-09-25 | 2018-12-14 | 三峡大学 | A kind of preparation method of road basement material |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072160A (en) * | 1992-08-15 | 1993-05-19 | 张维一 | Non-burning blocks with building refuse and manufacture method thereof |
| CN1072401A (en) * | 1991-11-16 | 1993-05-26 | 铜山县新型墙体材料厂 | The production and the goods of non-clay free of calcining and steam curing materials for wall |
| CN1098758A (en) * | 1993-08-11 | 1995-02-15 | 沧州市建筑安装工程公司机械施工分公司 | The compacted pile work method of enlarging building refuse is rammed in the weight punching |
| CN1153752A (en) * | 1996-11-07 | 1997-07-09 | 王军 | No-baking bearing brick |
| CN1298772A (en) * | 1999-12-06 | 2001-06-13 | 王健 | Process for treating and reclaiming construction garbage |
| CN1473787A (en) * | 2003-08-09 | 2004-02-11 | 同济大学 | Inorganic regenerated concrete mixture and its preparing method |
| CN1480264A (en) * | 2003-07-08 | 2004-03-10 | 健 王 | Method for treating inorganic solid waste and application |
| CN1597595A (en) * | 2004-08-06 | 2005-03-23 | 张晋省 | Construction material product produced by industrial solid was and building refuse |
| 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 |
-
2006
- 2006-08-24 CN CNB2006100884493A patent/CN100431999C/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072401A (en) * | 1991-11-16 | 1993-05-26 | 铜山县新型墙体材料厂 | The production and the goods of non-clay free of calcining and steam curing materials for wall |
| CN1072160A (en) * | 1992-08-15 | 1993-05-19 | 张维一 | Non-burning blocks with building refuse and manufacture method thereof |
| CN1098758A (en) * | 1993-08-11 | 1995-02-15 | 沧州市建筑安装工程公司机械施工分公司 | The compacted pile work method of enlarging building refuse is rammed in the weight punching |
| CN1153752A (en) * | 1996-11-07 | 1997-07-09 | 王军 | No-baking bearing brick |
| CN1298772A (en) * | 1999-12-06 | 2001-06-13 | 王健 | Process for treating and reclaiming construction garbage |
| CN1480264A (en) * | 2003-07-08 | 2004-03-10 | 健 王 | Method for treating inorganic solid waste and application |
| CN1473787A (en) * | 2003-08-09 | 2004-02-11 | 同济大学 | Inorganic regenerated concrete mixture and its preparing method |
| CN1597595A (en) * | 2004-08-06 | 2005-03-23 | 张晋省 | Construction material product produced by industrial solid was and building refuse |
| 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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| Publication number | Publication date |
|---|---|
| CN1931775A (en) | 2007-03-21 |
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