CN102442803A - Mixing process of modified cold-mix asphalt mixture - Google Patents
Mixing process of modified cold-mix asphalt mixture Download PDFInfo
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- CN102442803A CN102442803A CN2010105085313A CN201010508531A CN102442803A CN 102442803 A CN102442803 A CN 102442803A CN 2010105085313 A CN2010105085313 A CN 2010105085313A CN 201010508531 A CN201010508531 A CN 201010508531A CN 102442803 A CN102442803 A CN 102442803A
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Abstract
The invention discloses a mixing process of a modified cold-mix asphalt mixture. The process comprises the following steps of: mixing stone of which the particle size is over 1.18 millimeters firstly; spraying a coating agent with the amount being 0.1-0.25 percent of the weight of stone of 1.18 millimeters by using a liquid atomizing device to wet the surface of aggregate; adding 20-50 percent of the total amount of cold-mix asphalt for mixing; adding the remaining aggregate and water; mixing uniformly once again; and adding the remaining cold-mix asphalt at one time, and stirring uniformly. The method is called three-time coating.
Description
Technical field
The present invention relates to the mix technology of a kind of highway pavement,, can cooperate cold-mix asphalt to obtain meeting the pavement asphalt compound that JTG F40-2004 requires through this mix technology with cold-mix asphalt.
Background technology
Highway pavement adopts pitch as the road surface gelling material in a large number.And pitch is at first wanted heating and melting as gelling material, and high class pavement is wanted modification processing.Simultaneously, gathering materials also to be heated to 200 ℃, carries out mix then, under keeping warm mode, through transporting, paving, roll, forms bituminous pavement.All processes need to consume a large amount of fuel, produce a large amount of greenhouse gases.Simultaneously, engineering construction receives weather effect serious, and operation cooperates strict, and material use efficiency is lower, and waste is serious.Also serious environment pollution and workmen healthy simultaneously.
The modification cold-mix asphalt has overcome and need can make the bituminous concrete that meets JTG F40-2004 requirement at normal temperatures to the problem of gathering materials and pitch heats.This mix technology, be different from hot asphalt mixture mix, transport, pave, roll, be mix Technology to cold-mix asphalt exploitation.
Summary of the invention
The object of the present invention is to provide a kind of unconventional normal temperature mix type bituminous concrete, be used for alternative heated bitumen concrete, solution heated bitumen concrete can not store, the engineering use properties is poor, use short reaching in season will demanding problem to the use weather.
Further aim of the present invention is to provide a kind of mix technology, makes that the modification cold-mix asphalt can be good at using material with the road that adheres to and form similar hot-mixed asphaltic concrete that gathers materials.
The technical solution adopted for the present invention to solve the technical problems is:
At first particle diameter is at first mixed greater than the building stones more than the 1.18mm, wrap agent with the device for atomizing liquid sprinkling, wrapping agent sprinkling amount is 0.1% to 0.25% of the above building stones weight of 1.18mm, makes surface of aggregate moistening,
Add 20%～50% of cold-mix asphalt total amount then and mix and stir, after add remaining gathering materials and water again, mix is even once more.
At last remaining cold-mix asphalt is once added, stir.This method is called three times and wraps.
Describedly wrap agent, for the lauryl amine in the alkyls cationic surfactant, hexadecylamine, octadecylamine one or more.
Described device for atomizing liquid is divided into two kinds, and a kind of is to have elevated pressures; The modification cold-mix asphalt that the denseness that can atomize and viscosity are higher, this atomisation unit has powerful plunger to form high pressure; With heavy-gravity cold-mix asphalt atomisation; Its pressure can reach 40MPa, and a kind of is common sprayer, and rarer liquid that wraps atomizes.
Described gathering materials, for meeting rocks such as Irish touchstone that JTG F40-2004 requires or ls, andesite, diabase, its faller gill shape index request is for being not more than 2%.
Wrapping agent mainly makes the modification cold-mix asphalt not break away from the good adhesion of coarse aggregate.Mix cold-mix asphalt for the first time is mainly and makes the coarse aggregate surface have good surface to wrap, and avoids the big fine aggregate of surface area ratio to rob the suction cold-mix asphalt, adds remaining cold-mix asphalt at last again and makes the fine aggregate surface wrap cold-mix asphalt.
For the compound of similar SMA, OGFC type, because of its gap gradation, fine aggregate is less, directly mix.
Drag to stressing to strengthen the Young's modulus of cold-mix asphalt compound, can slag in the fine aggregate and cement proportion suitably be adjusted.If strengthen its Marshall stability fast, reduce its flow valuve simultaneously, can be in wrapping for the second time the dilute with water cold-mix asphalt.
Calcium ions and magnesium ions content is no more than 100mg/L in the above-described water.
Embodiment
Embodiment 1: a kind of SMA type cold mixing slag asphalt preparation:
Component: by weight percentage, 4# modification cold-mix asphalt: 7.45%, suitably grating gathers materials 86.55%%, and the slag of suitable proportion and cement 4% wrap agent 2%.
The preparation method: the aggregate blending of the above particle diameter of 0.15mm is even, and sprinkling wraps agent, and then 30% in the cold-mix asphalt added mix in the coarse aggregate, adds following fine aggregate of 0.15mm and slag and cement admixture mix then 60 seconds.Remaining cold-mix asphalt is diluted to 64%, adds then and stirred once more in the compound 60 seconds.Discharging gets final product.
Embodiment 2: a kind of SMA type cold mixing slag asphalt preparation:
Component: by weight percentage, 4# modification cold-mix asphalt: 7.45%, the continuous grading 85.55%.5% that gathers materials, the slag of suitable proportion and cement 5% wrap agent 2%.
Preparing method: with the aggregate blending of particle diameter, spray and to wrap agent, then 30% in the cold-mix asphalt added mix in the coarse aggregate, add slag and the cement admixture mix 60 seconds of fine aggregate and suitable proportion then greater than 0.15mm.Remaining cold-mix asphalt joined stirred once more in the compound 60 seconds.Discharging.
Embodiment 3: a kind of OGFC type cold-mix asphalt compound preparation
Component: by weight percentage, 1# modification cold-mix asphalt: 8.52%, continuous grading gathers materials 82.48%, and the slag of suitable proportion and cement 7.5% wrap agent 1.5%.
The preparation method: particle diameter is even greater than the aggregate blending of 0.15mm, spray and to wrap agent, and then 40% in the cold-mix asphalt added mix in the coarse aggregate, add slag and the cement admixture mix 60 seconds of fine aggregate and suitable proportion then.With stirring once more 60 seconds in the remaining cold-mix asphalt adding compound.Discharging.
Test detects: press the People's Republic of China's industry standard: highway engineering pitch and asphalt testing regulation T702-2000, and T709-2000, the result is following:
| Test subject | Marshall stability | Flow valuve | The secondary stability | The secondary flow valuve |
| Embodiment 1 | 13.15KN | 0.85 | 14.57 | 3.11 |
| Embodiment 2 | 14.23KN | 15 | 9.92 | 26 |
| Embodiment 3 | 10.5KN | 24 | 8.85 | 42 |
Claims (5)
1. technology for blending modified cold mix asphalt is characterized in that:
At first particle diameter is at first mixed greater than the building stones more than the 1.18mm, wrap agent with the device for atomizing liquid sprinkling, wrapping agent sprinkling amount is 0.1% to 0.25% of the above building stones weight of 1.18mm, makes surface of aggregate moistening; Add 20%～50% of cold-mix asphalt total amount then and mix and stir, after add remaining gathering materials and water again, mix is even once more; At last remaining cold-mix asphalt is once added, stir.
2. technology for blending modified cold mix asphalt as claimed in claim 1 is characterized in that: describedly wrap agent, for the lauryl amine in the alkyls cationic surfactant, hexadecylamine, octadecylamine one or more.
3. technology for blending modified cold mix asphalt as claimed in claim 1 is characterized in that: described device for atomizing liquid is divided into two kinds; A kind of is to have elevated pressures, the modification cold-mix asphalt that the denseness that can atomize and viscosity are higher, this atomisation unit; Have powerful plunger to form high pressure, with heavy-gravity cold-mix asphalt atomisation, its pressure can reach 40MPa; A kind of is common sprayer, and rarer liquid that wraps atomizes.
4. technology for blending modified cold mix asphalt as claimed in claim 1 is characterized in that: described gathering materials, for meeting rocks such as Irish touchstone that JTG F40-2004 requires or ls, andesite, diabase, its faller gill shape index request is for being not more than 2%.
5. like claim 1 technology for blending modified cold mix asphalt, it is characterized in that: the calcium ions and magnesium ions content in the described water is no more than 100mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105085313A CN102442803A (en) | 2010-10-15 | 2010-10-15 | Mixing process of modified cold-mix asphalt mixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105085313A CN102442803A (en) | 2010-10-15 | 2010-10-15 | Mixing process of modified cold-mix asphalt mixture |
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| CN102442803A true CN102442803A (en) | 2012-05-09 |
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| CN2010105085313A Pending CN102442803A (en) | 2010-10-15 | 2010-10-15 | Mixing process of modified cold-mix asphalt mixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086219A (en) * | 2014-06-26 | 2014-10-08 | 华南理工大学 | Stone surface performance improvement system and stone surface performance improvement method |
| CN113526906A (en) * | 2021-07-15 | 2021-10-22 | 郑州中科新兴产业技术研究院 | Preparation method and application of latent curing cold-mixed cold-laid asphalt mixture |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475351A (en) * | 2009-01-20 | 2009-07-08 | 钦兰成 | Cold mixing high polymer modified asphalt concrete and preparing method thereof |
| CN101767965A (en) * | 2009-12-25 | 2010-07-07 | 李国涛 | Technology for blending modified cold mix asphalt |
| CN101851427A (en) * | 2010-06-02 | 2010-10-06 | 安徽三缔沥青材料有限公司 | Blending type room-temperature asphalt liquefier |
-
2010
- 2010-10-15 CN CN2010105085313A patent/CN102442803A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101475351A (en) * | 2009-01-20 | 2009-07-08 | 钦兰成 | Cold mixing high polymer modified asphalt concrete and preparing method thereof |
| CN101767965A (en) * | 2009-12-25 | 2010-07-07 | 李国涛 | Technology for blending modified cold mix asphalt |
| CN101851427A (en) * | 2010-06-02 | 2010-10-06 | 安徽三缔沥青材料有限公司 | Blending type room-temperature asphalt liquefier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086219A (en) * | 2014-06-26 | 2014-10-08 | 华南理工大学 | Stone surface performance improvement system and stone surface performance improvement method |
| CN113526906A (en) * | 2021-07-15 | 2021-10-22 | 郑州中科新兴产业技术研究院 | Preparation method and application of latent curing cold-mixed cold-laid asphalt mixture |
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Application publication date: 20120509 |