CN105693126A - Asphalt filler containing light burned dolomite lime and preparation method thereof - Google Patents
Asphalt filler containing light burned dolomite lime and preparation method thereof Download PDFInfo
- Publication number
- CN105693126A CN105693126A CN201610065603.9A CN201610065603A CN105693126A CN 105693126 A CN105693126 A CN 105693126A CN 201610065603 A CN201610065603 A CN 201610065603A CN 105693126 A CN105693126 A CN 105693126A
- Authority
- CN
- China
- Prior art keywords
- light dolomite
- asphalt
- ash
- asphalt filler
- burned dolomite
- 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.)
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Classifications
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/30—Mixed waste; Waste of undefined composition
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/149—Waste materials; Refuse from metallurgical processes other than silica fume or slag
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses asphalt filler containing light burned dolomite lime and a preparation method thereof. The asphalt filler consists of 20 to 40 percent by weight of light burned dolomite lime and 60 to 80 percent by weight of mineral powder. When in preparation, the light burned dolomite lime is sorted, 100 percent of light burned dolomite lime smaller than 0.6mm is collected, and the collected light burned dolomite lime is mixed with the mineral powder by a metering and mixing device according to a ratio. The light burned dolomite lime is used for substituting partial mineral powder, so that the production process is simple, and the light burned dolomite lime is recycled. The high temperature performance and water stability of asphalt concrete produced by utilizing the filler can be improved.
Description
Technical field
The present invention relates to asphalt filler, be specifically related to a kind of asphalt filler containing light dolomite ash and preparation method thereof。
Background technology
In order to improve the Practical Performance of bituminous concrete, in bituminous concrete mixture, often add filler, and filler is mainly based on breeze。Currently also have and in breeze, mix part flyash, cement as the case history of asphalt filler and research。
Through the retrieval of existing document is found, Chinese invention patent CN200610017564 discloses preparation and the production method of a kind of asphalt filler compositions, component and content are than for meerschaum 5～18%, wollastonite 20～40%, Talcum 20～40%, barite 25～50%, wherein meerschaum and barite are worked into 200～325 orders, Talcum 600～800 order, wollastonite 800～1250 order, this filler reduces the consumption of Colophonium, improves a series of performances such as Colophonium coagulability, wearability, additionally reduces cost。But owing to component contained in this patent is more, processing granularity is not quite similar and also brings the shortcoming that actual production is excessively complicated, this can increase a large amount of energy consumption, is unfavorable for engineer applied。
Chinese invention patent CN201410273224 discloses a kind of by the bituminous concrete filler of steel slag instead breeze, each component of its filler and weight are by steel-making slag powder 20～90 parts, breeze 0～25 part, 0～30 part of flyash, 4～7 parts of Calx, cement 5～20 parts composition, while effectively utilizing slag, workability is excellent, reduces cost。Requiring in this patent that steel-making slag powder particle diameter 0.15mm accounts for more than 90%, steel-making slag powder particle diameter 0.075mm accounts for more than 70%；Owing to slag difficulty is ground, and density is relatively big, and it is limited relative to the Technical Economy of other mineral filler。And the component contained by it of filler described in this patent is more, can cause that production process is more complicated, it is not easy to various ingredients mixing enough uniformly to retrain the discreteness of construction quality。
Light dolomite ash is the fine ash that in steelmaking ingredient light dolomite production process, dedusting and light dolomite are transported in the process of steelmaking ingredient storehouse dust and produce。Current is adopt light dolomite ash briquetting to make steelmaking slag agent at the Application way that iron and steel enterprise is the more commonly used。Chinese patent CN201210416066.X discloses a kind of new technology utilizing light dolomite powder ash to prepare converter slag adjusting agent；By the Size of Dolomite screening after calcining, the light dolomite block more than 5mm is fed directly to steel mill and uses；Part less than 5mm carries out certain screening, carries out break process more than 3mm part so that light dolomite powder pariticle is less than 3mm。This part light dolomite powder ash is by with addition of certain binding agent and moisture, pelletizing is carried out in disc balling machine, obtaining the particle diameter light dolomite pelletizing more than 15mm, pelletizing is delivered to steel mill and is replaced light dolomite block to use after obtaining converter slag-making agent requirement after maintenance。Although this patent achieves light dolomite powder ash and returns STEELMAKING PRODUCTION, but need to add industry syrup, quick lime and water as binding agent, it is necessary to powder process, dispensing, formation system, and need the maintenance of a large amount of places 3 days, whole production procedure is more complicated, reduces Technical Economy to a certain extent。
Summary of the invention
It is an object of the invention to the deficiency overcoming above-mentioned prior art to exist, it is provided that a kind of asphalt filler containing light dolomite ash and preparation method thereof。
It is an object of the invention to be achieved through the following technical solutions:
The present invention relates to a kind of asphalt filler containing light dolomite ash, described asphalt filler is made up of 20～40wt% light dolomite ash and 60～80wt% breeze。Two kinds of compositions directly can mix in proportion according to different actual requirement of engineering。
Preferably, described light dolomite ash is the fine ash that in steelmaking ingredient light dolomite production process, dedusting and light dolomite are transported in the process of steelmaking ingredient storehouse dust and produce。
Preferably, the main chemical compositions of described light dolomite dust-collector: CaO:30～50wt%MgO:20～35wt%Fe2O3: 0～5wt%。
Preferably, the mean diameter 0.1mm of described light dolomite ash。Present inventors have unexpectedly found that, when adopting above-mentioned light dolomite ash, asphalt all improves at water stability and high-temperature stability。
Preferably, CaCO in described breeze3Content is at 70wt%～90wt%。
The preparation method that the invention still further relates to a kind of described asphalt filler, by light dolomite ash by sorting, collecting the light dolomite ash of 100% < 0.6mm and transport, be stored in airtight silo, by measuring, mixing arrangement is made after mixing with breeze in proportion。This filler and described breeze are satisfied by " standard specification for construction and acceptance of highway asphalt pavement " related request。
Compared with prior art, there is advantages that
1) present invention adopt light dolomite ash replace part Colophonium conventional fillers breeze, it is achieved light dolomite ash recycling in asphalt。
2) present invention adopt light dolomite ash replace part Colophonium conventional fillers breeze, it is possible to improve asphalt concrete elevated temperature property, water stability。
3) the fine ash characteristic of light dolomite ash is made full use of, process without grinding, only need to can obtain the powder of 100% < 0.6mm by simply sorting, and then job site can be directly sent to mix with breeze, eliminate complicated processing flow process, reduce the processing cost of light dolomite ash, improve the economy of application。
4) China is one of light dolomite big producing country, and a kind of asphalt filler containing light dolomite ash of the present invention has Technical Economy more preferably than conventional fillers breeze, has good market application foreground。
5) technology provided by the invention, it is possible to be suitable for different engineering, after can determining optimum adding quantity of pulverized according to the practical situation of different engineerings, directly mixes with all kinds of breezes at the scene, and owing to compound filler is containing only two kinds of compositions, it is easy to mix homogeneously。
6) asphalt that the present invention makes keeps identical with the production process of plain asphalt compound and only with a kind of additional powder (light dolomite ash) substantially in production process, water stability can be reached significantly improve, the effect that high-temperature stability is also improved to some extent。
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail。Following example will assist in those skilled in the art and are further appreciated by the present invention, but do not limit the present invention in any form。
Embodiment 1～4
Embodiment 1～4 each provides a kind of asphalt filler containing light dolomite ash, and filler composition is as shown in table 1 respectively:
Table 1
As Table 2,3, Colophonium is selected from the A level Colophonium meeting JTGF40, and optimum oil-stone ratio adopts 4.5% for the grating of AC-13 asphalt described in table 1 and basic Marshall volume index。
Table 2AC-13 grating
| Screen size | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 95 | 76.5 | 53 | 37 | 26.5 | 19 | 13.5 | 10 | 6 |
The basic Marshall volume index of table 3
Comparative example 1
This comparative example 1AC-13 compound does not adopt light dolomite ash Substitute For Partial breeze, and its Colophonium mineral filler composition is as shown in table 1。
The asphalt dynamic stability of embodiment 1～4 and comparative example 1, freeze-thaw split strength ratio, immersion Marshall residual stability detected value are shown in than table 4。
Table 4AC-13 asphalt detected value
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | |
| Dynamic stability/(secondary/mm) | 1310 | 1686 | 1267 | 1544 | 1197 |
| Freeze-thaw split strength ratio/% | 89.7 | 93.6 | 90.6 | 94.2 | 88.8 |
| Immersion Marshall residual stability/% | 96.8 | 98.6 | 97.5 | 98.8 | 96.6 |
As can be seen from Table 4, embodiment 1～4 is relative to comparative example 1, dynamic stability improves to some extent (adding 5.85%～28.99%), freeze-thaw split strength ratio and immersion Marshall residual stability also have raising by a relatively large margin (freeze-thaw split strength ratio adds 1.01%～6.08%, and immersion Marshall residual stability adds 0.21%～5.4%)。Visible employing light dolomite ash Substitute For Partial breeze, it is possible to improve AC asphalt concrete elevated temperature property, water stability。
Embodiment 5～6
Embodiment 5～6 each provides a kind of asphalt filler containing light dolomite ash, and its asphalt filler composition is as shown in table 5 respectively:
Table 5
The grating of AC-13 asphalt described in table 5 and basic Marshall volume index are such as shown in table 6,7, and Colophonium is selected from the A level Colophonium meeting JTGF40, and fiber adopts lignin fibre, and optimum oil-stone ratio adopts 6.0%。
Table 6SMA-13 grating
| Screen size | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Percent of pass (%) | 100 | 95 | 62.5 | 27 | 20.5 | 19 | 16 | 13 | 12 | 10 |
The basic Marshall volume index of table 7
Comparative example 2
This comparative example 2SMA-13 compound does not adopt light dolomite ash Substitute For Partial breeze, and its composition is as shown in table 5。
Embodiment 5,6 and the asphalt dynamic stability of comparative example 2, freeze-thaw split strength ratio, immersion Marshall residual stability detected value are shown in than table 8。
Table 8SMA-13 asphalt detected value
As can be seen from Table 8, embodiment 5～6 is relative to comparative example 2, and dynamic stability adds 7.79%～25.46%, and freeze-thaw split strength ratio adds 10.71%～11.76%, and immersion Marshall residual stability adds 2.53%～2.85%。Visible employing light dolomite ash Substitute For Partial breeze, it is possible to improve SMA asphalt concrete elevated temperature property, water stability。
The above, be only the preferably embodiment of the present invention, and embodiment is merely to illustrate the present invention rather than restriction the scope of the present invention。Not technical scheme is done any pro forma restriction。Every those skilled in the art do various simple change or amendment according to the present invention, or equivalent variations and modification, each fall within protection scope of the present invention。
Claims (6)
1. one kind containing light dolomite ash asphalt filler, it is characterised in that described asphalt filler is made up of with 60～80wt% breeze 20～40wt% light dolomite ash。
2. asphalt filler according to claim 1, it is characterised in that described light dolomite ash is the fine ash that in steelmaking ingredient light dolomite production process, dedusting and light dolomite are transported in the process of steelmaking ingredient storehouse dust and produce。
3. asphalt filler according to claim 1, it is characterised in that the main chemical compositions of described light dolomite ash: CaO:30～50wt%, MgO:20～35wt%, Fe2O3: 0～5wt%。
4. asphalt filler according to claim 1, it is characterised in that the mean diameter 0.1mm of described light dolomite ash。
5. asphalt filler according to claim 1, it is characterised in that CaCO in described breeze3Content is at 70wt%～90wt%。
6. the preparation method of an asphalt filler according to claim 1, it is characterised in that by light dolomite ash by sorting, collects the light dolomite ash of 100% < 0.6mm, and by measuring, mixing arrangement makes asphalt filler after mixing with breeze in proportion。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610065603.9A CN105693126B (en) | 2016-01-29 | 2016-01-29 | A kind of asphalt filler of the ash containing light dolomite and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610065603.9A CN105693126B (en) | 2016-01-29 | 2016-01-29 | A kind of asphalt filler of the ash containing light dolomite and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105693126A true CN105693126A (en) | 2016-06-22 |
| CN105693126B CN105693126B (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610065603.9A Expired - Fee Related CN105693126B (en) | 2016-01-29 | 2016-01-29 | A kind of asphalt filler of the ash containing light dolomite and preparation method thereof |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298376A (en) * | 2008-04-24 | 2008-11-05 | 长安大学 | Composite asphalt concrete CAC for normal temperature mixing road and production method thereof |
| CN101864181A (en) * | 2009-04-16 | 2010-10-20 | 汪德元 | CDE (diatom complex) modified asphalt and preparation method thereof |
| CN104844100A (en) * | 2015-03-27 | 2015-08-19 | 苏州拓博琳新材料科技有限公司 | Pre-mixed dry material for cold-in-place recycling, cold-in-place recycling mixture and preparation therefor |
-
2016
- 2016-01-29 CN CN201610065603.9A patent/CN105693126B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101298376A (en) * | 2008-04-24 | 2008-11-05 | 长安大学 | Composite asphalt concrete CAC for normal temperature mixing road and production method thereof |
| CN101864181A (en) * | 2009-04-16 | 2010-10-20 | 汪德元 | CDE (diatom complex) modified asphalt and preparation method thereof |
| CN104844100A (en) * | 2015-03-27 | 2015-08-19 | 苏州拓博琳新材料科技有限公司 | Pre-mixed dry material for cold-in-place recycling, cold-in-place recycling mixture and preparation therefor |
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| Publication number | Publication date |
|---|---|
| CN105693126B (en) | 2017-09-05 |
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Granted publication date: 20170905 Termination date: 20180129 |