CN1143134A - Lime increased calcium slag mixed material and method for using it as road base - Google Patents
Lime increased calcium slag mixed material and method for using it as road base Download PDFInfo
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- CN1143134A CN1143134A CN 96107075 CN96107075A CN1143134A CN 1143134 A CN1143134 A CN 1143134A CN 96107075 CN96107075 CN 96107075 CN 96107075 A CN96107075 A CN 96107075A CN 1143134 A CN1143134 A CN 1143134A
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- lime
- calcium
- compound
- slag
- calcium slag
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- Road Paving Structures (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The mixed material may be one comprising line 6-15, (by weight ratio, the same below) increased calcium slag 40-75, earth 18-60 and water in proper amount; one comprising lime 5-12, high-calcium fly ash 15-50, increased calcium slag 45-80 and water; or one comprising lime 5-10, increased calcium slag 15-60, ballast 35-80 and water.
Description
The invention relates to and utilize a kind of infant industry waste residue---increase calcium slag (also be called granulation increases the calcium slag or liquid state increases calcium slag or calcium enriched cyclone-furnace slag) and make the high class pavement base material.
Increasing the calcium slag is thermal power plant's coal-burning boiler---a kind of infant industry waste residue of vertical cyclone furnace discharging.Along with the development of technology and improving constantly of environmental consciousness, thermal power plant is that vertical cyclone furnace is a developing direction with existing coal-fired boiler reform.
The lime of some and increase the calcium slag and match with other material adds an amount of water (being generally optimum moisture content), through mixing and stirring, compacting, reaching the compound that obtains after the health, is called lime increased calcium slag mixed material.
Existing industrial residue with using it as road base comprises: flyash, cinder, blast-furnace cinder, slag (stable), other metallurgical slag, gangue etc.Immediate with the present invention is lime fly ash compound and lime cinder compound.For the lime fly ash compound, be characterized in that early strength is lower, gain in strength is slow, amount of contraction big (lime-flyash stabilization fine grained soils), construction costs higher (lime-flyash stabilization graded broken stone).For lime cinder compound, because the cinder material source disperses, the quality of cinder is uncontrollable, thereby is difficult to use in major works.
The objective of the invention is, comprehensive utilization vertical cyclone furnace discharging increase calcium slag and high-calcium fly ass, provide a kind of early strength height, gain in strength rapidly, the road is with good, the cheap high grade pavement base material of technical performance.Eliminate simultaneously by increasing the environment pollution that calcium slag and high-calcium fly ass cause.
The present invention is achieved through the following technical solutions.
One, the lime increased calcium compound is formed design
Lime increased calcium slag mixed material among the present invention is formed design and is adopted weight ratio.
(1) lime increased calcium slag Stabilized Soil (being designated hereinafter simply as grey dregs)
Lime-ash soil basically by lime, increase calcium slag, soil and water and form.
Lime: increase the calcium slag: the ratio of soil can be 6～15: 40～75: 18～60.
The present invention forms design preferably and is lime: increase the calcium slag: soil=9～12: 45～70: 20: 45.
The present invention better forms design and is lime: increase the calcium slag: soil=12: 65: 23,12: 55: 33,12: 45: 33.
(2) the lime high-calcium fly ass increases calcium slag (being designated hereinafter simply as two lime-ash)
Two lime-ash basically by lime, high-calcium fly ass, increase the calcium slag and water is formed.
Lime: high-calcium fly ass: the ratio that increases the calcium slag can be 5～12: 15～50: 45～80.
The present invention better forms design and is lime: high-calcium fly ass: increase calcium slag=(8～12): (20～32): (70～60).
(3) lime increased calcium slag stabilization gravel (being designated hereinafter simply as the lime-ash rubble)
The lime-ash rubble basically by lime, increase calcium slag, rubble and water and form.
Lime: increase the calcium slag: the ratio of rubble can be 5～10: 15～60: 35～80.
Take high prescribing a time limit when the rubble ratio, should adopt graded broken stone.
Two, lime increased calcium slag mixed material job practices
(1) raw material
1, the quality of lime lime should meet the III level slaked lime of GB1594-97 regulation or the technical standard of III level quicklime.
The content of free calcium oxide is application of lime outside the grade more than 20%, should as long as the intensity of lime increased calcium slag mixed material meets the standard of table 1 or table 2, just can use by test.
2, local product adopts the cohesive soil of index of plasticity 12～20, and the maximum size of soil block should be greater than 15mm in the soil.
What 3, increase that the calcium slag adopts the vertical cyclone furnace discharging increases the calcium slag.The content that increases silica, alundum (Al, calcium oxide in the calcium slag should be greater than 70%.
4, high-calcium fly ass adopts the high-calcium fly ass of vertical cyclone furnace discharging.The content of silica, alundum (Al, calcium oxide should be greater than 70% in the high-calcium fly ass, and wherein the content of calcium oxide should be greater than 15%.Should smash or sieve for the high-calcium fly ass piece that condenses, eliminate objectionable impurities simultaneously.
5, the water source of water people or livestock consumption all can use.
(2) road-mix method construction
Construction point is as follows:
1, the sub-layer of lime increased calcium slag mixed material should meet the regulation of JTJ034-93 4.4.2 bar.
2, construction technology process is identical with " 4. lime industrial residue Stabilized Soil " among the JTJ034-93 in principle.
3, for grey dregs, should adopt following order layering each raw material that pave: plain soil → increase calcium slag → lime.Pave when increasing the calcium slag, should suitably sprinkle water, generally water content should be controlled at about 5%, otherwise be difficult for paving and flattening.
4,, should adopt following order layering each raw material that pave: increase calcium slag → high-calcium fly ass → lime for two lime-ash.Water content should be controlled at about 5% when increasing the calcium slag and paving.Should note timely watering when paving high-calcium fly ass, in case airborne dust causes environment pollution.
5, after the preliminary integer, check the loose laying depth of compound.Carry out material reducing or feed supplement in case of necessity.The coefficient of loose laying of ash dregs is about 1.4～1.6; The coefficient of loose laying of two lime-ash is about 1.4～1.6; Mix and stir and during mechanical integer, increase calcium slag coefficient of loose laying and be about 1.2～1.3 with machinery.
6, after the integer, when compound is in optimum moisture content ± 1%, can roll.As the surface moisture deficiency, should suitably sprinkle water, roll but forbid to spill big flood.
7, rolling compaction machine should adopt heavy road roller or vibratory roller more than 12 tons.Roll to be performed until and meet the requirements of till the degree of compaction, must not adopt preliminary roller-compaction the previous day, the mode that chased after pressure with heavy road roller in second day is constructed.
(3) construction of central station central mix (plantmix) method
1, for grey dregs, the technological process of plant mixing method production compound is as follows:
With the lime of requirement up to specification, increase the calcium slag and fine grained soils (or gathering materials) has been stored in scaffold storehouse or stockpile respectively; Then with trolley or loader or other conveyer (as belt transporting facility) respectively certainty ratio be transported to separately hopper; Three kinds of raw material together enter compulsory mixer or two rotating shaft paddle formula lorry mounted mixer or gravity type lorry mounted mixer (latter only is used for not containing or few argillaceous gathering materials), simultaneously, quantitatively spray into water as required with it, mix and stir; Discharging after the uniform mixing.
2, for two lime-ash, except that with fine grained soils generation be the high-calcium fly ass, its technological process is with 1.
3, the water content that mixes compound is larger than optimum value.
4, the pilling up time that mixes compound should not surpass 3 days, should the compound that mix be transported to the making scene on the same day.
5, other construction point is with (two).
Three, the lime increased calcium slag mixed material scope of application and technical standard
Lime increased calcium slag mixed material can be used for highway and urban road surfaces basic unit.Its scope of application and technical standard see Table 1 and table 2.
Lime increased calcium slag mixed material is used for highway road surface
The scope of application and standard scale 1
| The compound title | Layer position | Road quality classification | The no lateral confinement water compressive strength MPa (7 days, 20 ± 2 ℃) that satisfies | Degree of compaction (%) |
| The ash dregs | Basic unit | Secondary and secondary are to get down the highway | ???????≥0.6 | ????97 |
| Subbase | Speedway and Class I highway | ???????≥0.5 | ????95 | |
| Two lime-ash | Basic unit | Speedway and Class I highway | ???????＞1.8 | ????98 |
| Secondary and secondary are to get down the highway | ???????≥1.6 | ????97 | ||
| Subbase | Speedway and Class I highway | ???????≥1.5 | ????96 | |
| Secondary and secondary are to get down the highway | ???????≥1.5 | ????95 | ||
| The lime-ash rubble | Basic unit | Speedway and Class I highway | ???????≥0.8 | ????98 |
| Secondary and secondary are to get down the highway | ???????≥0.6 | ????97 | ||
| Subbase | Speedway and Class I highway | ???????≥0.5 | ????96 | |
| Secondary and secondary are to get down the highway | ???????≥0.5 | ????95 |
Lime increased calcium slag mixed material is used for urban road surfaces basic unit
The scope of application and standard scale 2
| The compound title | Layer position | Road quality classification | The no lateral confinement water compressive strength MPa (7 days, 20 ± 2 ℃) that satisfies | Degree of compaction (%) |
| The ash dregs | Basic unit | Main line and secondary trunk road | ???????＞0.8 | ????≥97 |
| Branch road | ???????＞0.6 | ????≥95 | ||
| Subbase | Through street and arterial road | ???????＞0.6 | ????≥96 | |
| Subsidiary road and branch road | ???????＞0.5 | ????≥95 | ||
| Two lime-ash | Basic unit | Through street and arterial road | ???????＞1.8 | ????≥97 |
| Secondary trunk road | ???????＞1.5 | ????≥96 | ||
| Branch road | ???????＞1.5 | ????≥95 | ||
| Subbase | Through street and arterial road | ???????＞1.5 | ????≥96 | |
| The lime-ash rubble | Basic unit | Through street and arterial road | ???????＞0.8 | ????≥97 |
| Secondary trunk road | ???????＞0.6 | ????≥96 | ||
| Branch road | ???????＞0.6 | ????≥95 | ||
| Subbase | Through street and arterial road | ???????＞0.6 | ????≥96 |
According to the strength criterion of table 1 and table 2, the match ratio of selected compound.Under this match ratio, the mean compressive strength R of the laboratory test results of test specimen should meet the requirement of following formula:
R 〉=R
d/ (1-Z
aCv) in the formula: R
d-design compressive strength (referring to table 1 and table 2);
C
vThe deviation factor of-result of the test (in decimal);
Z
a-high-grade highway (road), Z
a=1.645; Ordinary highway (road
The road), Z
a=1.282.
Advantage of the present invention:
1, because the operate as normal of vertical cyclone furnace need adopt fixing coal, limestone is also wanted strict ratio and the fineness of controlling coal and limestone, so the steady quality that increases calcium slag and high-calcium fly ass of cyclone furnace discharging.
2, the early strength of lime increased calcium slag mixed material is higher, and gain in strength is rapid, and the result of the test of part proportioning sees Table 3.
Table 3
| The compound title | Match ratio | The no lateral confinement water compressive strength (MPa, 20 ± 2 ℃) of satisfying |
| 7 days 28 days 90 days 180 days 360 days | ||
| The ash dregs | ?12∶45∶43 ?12∶65∶23 | ?1.256??2.657??3.600?????-?????5.121 ?1.192??2.290??3.509?????-?????6.867 |
| Two lime-ash | ?8∶22∶70 ?10∶30∶60 | ?2.80???6.158??9.029???12.038??20.03 ?3.450??7.351??11.795??16.561??23.71 |
| The lime-ash rubble | ?6∶44∶50 | ?1.191??1.984??4.18??????-?????8.51 |
3, the construction costs of lime increased calcium slag mixed material is cheap relatively.For example: the material unit price of cinder is about 16 yuan/t; The material unit price of rubble is about 70 yuan/t; The material unit price that increases the calcium slag is about 10 yuan/t.
Embodiment:
Lime: increase the calcium slag: soil=12: 45: 43.
Employing road-mix method construction, after the uniform mixing under part water content compaction moulding, the compressive strength in 97%, the 7 day length of time of degree of compaction is 1.248MPa.Investigate through the observations in 2 years, the crack of test section is less than lime cinder soil contrast section.
Embodiment two:
Lime: high-calcium fly ass: increase calcium slag=10: 20: 70.
Employing road-mix method construction, after the compound uniform mixing under the optimum moisture content condition compaction moulding, the compressive strength in 97%, the 3 day length of time of degree of compaction is 1.6MPa.
Embodiment three:
Lime: increase the calcium slag: soil=12: 65: 23.
The road-mix method construction.After the uniform mixing under optimum moisture content compaction moulding, the compressive strength in 97%, the 7 day length of time of degree of compaction is 1.223MPa.After a winter, the road surface free from flaw, and the road surface of lime fly ash crushed rock base course contrast section on average a perforation transverse joint occurs every 20m.
Embodiment four:
Lime: increase the calcium slag: rubble=5: 35: 60.
After the uniform mixing under optimum moisture content compaction moulding, the compressive strength in 100%, the 7 day length of time of degree of compaction is 1.015MPa.
Claims (12)
1, a kind of lime increased calcium compound as highway road surface comprises lime, increases calcium slag, soil and suitable quantity of water, it is characterized in that the component of compound is: lime: increase the calcium slag: the weight ratio of soil is (6～15): (40～75): (18～60).
2, lime increased calcium compound as claimed in claim 1 is characterized in that the component of compound is: lime: increase the calcium slag: the weight ratio of soil is (9～12): (45～75): (20～45).
3, lime increased calcium compound as claimed in claim 1 is characterized in that the component of compound is: lime: increase the calcium slag: the weight ratio of soil is (9～12): (45～60): (25～45).
4, lime increased calcium compound as claimed in claim 1 is characterized in that the component of compound is: lime: increase the calcium slag: the weight ratio of soil is 12: 65: 23.
5, lime increased calcium compound as claimed in claim 1 is characterized in that the component of compound is: lime: increase the calcium slag: the weight ratio of soil is 12: 45: 33.
6, lime increased calcium compound as claimed in claim 1 is characterized in that the component of compound is: lime: increase the calcium slag: the weight ratio of soil is 12: 45: 33
7, a kind of lime increased calcium compound as highway road surface comprises lime, high-calcium fly ass, increases calcium slag and suitable quantity of water, it is characterized in that the component of compound is:
Lime: high-calcium fly ass: the weight ratio that increases the calcium slag is (5～12): (15～50): (45～80).
8、。Lime increased calcium compound as claimed in claim 7 is characterized in that the component of compound is:
Lime: high-calcium fly ass: the weight ratio that increases the calcium slag is (8～12): (20～32): (60～70).
9, a kind of lime increased calcium compound as highway road surface comprises lime, increases calcium slag, rubble and suitable quantity of water, it is characterized in that the component of compound is:
Lime: increase the calcium slag: the weight ratio of rubble is (5～10): (15～60): (35～80).
10, a kind of lime increased calcium compound is characterized in that as the job practices of highway road surface:
(1), the quality of lime lime should meet the III level slaked lime of GB1594-97 regulation or the technical standard of III level quicklime.
The content of free calcium oxide is application of lime outside the grade more than 20%, should as long as the intensity of lime increased calcium slag mixed material meets the standard of table 1 or table 2, just can use by test.
(2), local product adopts the cohesive soil of index of plasticity 12～20, the maximum size of soil block should be greater than 15mm in the soil.
What (3), increase that the calcium slag adopts the vertical cyclone furnace discharging increases the calcium slag.The content that increases silica, alundum (Al, calcium oxide in the calcium slag should be greater than 70%.
(4), high-calcium fly ass adopts the high-calcium fly ass of vertical cyclone furnace discharging.The content of silica, alundum (Al, calcium oxide should be greater than 70% in the high-calcium fly ass, and wherein the content of calcium oxide should be greater than 15%.Should smash or sieve for the high-calcium fly ass piece that condenses, eliminate objectionable impurities simultaneously.
(5), the water source of water, people or livestock consumption, all can use.
11, a kind of lime increased calcium compound is characterized in that as the job practices of highway road surface:
(1), the sub-layer of lime increased calcium slag mixed material should meet the regulation of JTJ034-93 4.4.2 bar.
(2), construction technology process is identical with " 4. lime industrial residue Stabilized Soil " among the JTJ034-93 in principle.
(3), for grey dregs, should adopt following order layering each raw material that pave: plain soil → increase calcium slag → lime.Pave when increasing the calcium slag, should suitably sprinkle water, generally water content control should be levied about 5%, otherwise be difficult for paving and flattening.
(4), for native lime-ash, should adopt following order layering each raw material that pave: increase calcium slag → high-calcium fly ass → lime.Water content should be controlled at about 5% when increasing the calcium slag and paving.Should note timely watering when paving high-calcium fly ass, in case airborne dust causes environment pollution.
(5), after the preliminary integer, check the loose laying depth of compound.Carry out material reducing or feed supplement in case of necessity.The coefficient of loose laying of ash dregs is about 1.4～1.6; The coefficient of loose laying of two lime-ash is about 1.4～1.6; Mix and stir and during mechanical integer, increase calcium slag coefficient of loose laying and be about 1.2～1.3 with machinery.
(6), after the integer, when compound is in optimum moisture content ± 1%, can roll.As the surface moisture deficiency, should suitably sprinkle water, roll but forbid to spill big flood.
(7), rolling compaction machine should adopt heavy road roller or vibratory roller more than 12 tons.Roll to be performed until and meet the requirements of till the degree of compaction, must not adopt preliminary roller-compaction the previous day, the mode that chased after pressure with the type road roller of holding in second day is constructed.
12, a kind of lime increased calcium compound is characterized in that as the job practices of highway road surface:
(1), for grey dregs, it is as follows that plant mixing method is produced the technological process of compound:
With the lime of requirement up to specification, increase the calcium slag and fine grained soils (or gathering materials) has been stored in scaffold storehouse or stockpile respectively; Be used for then go-cart or loader or other conveyer (as belt transporting facility) respectively certainty ratio be transported to separately hopper; Three kinds of raw material together enter compulsory mixer or two rotating shaft paddle formula lorry mounted mixer or gravity type lorry mounted mixer (latter only is used for not containing or few argillaceous gathering materials), simultaneously, quantitatively spray into water as required with it, mix and stir; Discharging after the uniform mixing.
(2), for native lime-ash, except that with the particulate previous generation be the high-calcium fly ass, its technological process is with (1).
(3), the water content that mixes compound is larger than optimum value.
(4), the pilling up time that mixes compound should not surpass 3 days, should the compound that mix be transported to the making scene on the same day.
(5), other construction point is with 11.
The patent clause:
1, lime-ash local soil type becomes design: lime: increase the calcium slag: soil=6～15: 40～75: 18: 60.
2, two lime-ash are formed design: lime: high-calcium fly ass: increase calcium slag=5～12: 15～50: 45～80.
3, the broken row of lime-ash is formed design: lime: increase the calcium slag: rubble=5～10: 15～60: 35～80.
4, the lime increased calcium slag mixed material of 1,2,3 middle defineds of patent clause is used for sub-surface (comprising subbase).
5, use the road-mix method construction technology of the lime increased calcium slag mixed material build sub-surface (comprising subbase) of regulation in the patent clause 1,2,3.
6, use central station central mix (plant mixing method) construction technology of the lime increased calcium slag mixed material build sub-surface (comprising subbase) of regulation in the patent clause 1,2,3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96107075 CN1080794C (en) | 1996-07-16 | 1996-07-16 | Lime increased calcium slag mixed material and method for using it as road base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96107075 CN1080794C (en) | 1996-07-16 | 1996-07-16 | Lime increased calcium slag mixed material and method for using it as road base |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1143134A true CN1143134A (en) | 1997-02-19 |
| CN1080794C CN1080794C (en) | 2002-03-13 |
Family
ID=5119514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96107075 Expired - Fee Related CN1080794C (en) | 1996-07-16 | 1996-07-16 | Lime increased calcium slag mixed material and method for using it as road base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1080794C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101792C (en) * | 1999-08-20 | 2003-02-19 | 洪增兴 | Fly ash like composite mortar used in road of low temp area |
| CN1320209C (en) * | 2004-11-12 | 2007-06-06 | 王涌 | Composite type road surface basal layer and forming method |
| CN102211904A (en) * | 2011-04-02 | 2011-10-12 | 福建工程学院 | Road base course utilizing municipal solid waste incineration residue and manufacturing method thereof |
-
1996
- 1996-07-16 CN CN 96107075 patent/CN1080794C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101792C (en) * | 1999-08-20 | 2003-02-19 | 洪增兴 | Fly ash like composite mortar used in road of low temp area |
| CN1320209C (en) * | 2004-11-12 | 2007-06-06 | 王涌 | Composite type road surface basal layer and forming method |
| CN102211904A (en) * | 2011-04-02 | 2011-10-12 | 福建工程学院 | Road base course utilizing municipal solid waste incineration residue and manufacturing method thereof |
| CN102211904B (en) * | 2011-04-02 | 2013-04-03 | 福建工程学院 | Road base course utilizing municipal solid waste incineration residue and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1080794C (en) | 2002-03-13 |
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