CN106396502A - Foamed warm mix recycled asphalt mixture and preparation method thereof - Google Patents
Foamed warm mix recycled asphalt mixture and preparation method thereof Download PDFInfo
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- CN106396502A CN106396502A CN201610796562.0A CN201610796562A CN106396502A CN 106396502 A CN106396502 A CN 106396502A CN 201610796562 A CN201610796562 A CN 201610796562A CN 106396502 A CN106396502 A CN 106396502A
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- warm
- asphalt mixture
- recycled asphalt
- mix
- foaming
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- 239000000203 mixture Substances 0.000 title claims abstract description 108
- 239000010426 asphalt Substances 0.000 title claims abstract description 107
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 54
- 238000005187 foaming Methods 0.000 claims abstract description 49
- 238000002156 mixing Methods 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 25
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 23
- 239000011707 mineral Substances 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 4
- -1 fatty acid salt Chemical class 0.000 claims abstract 2
- 238000003756 stirring Methods 0.000 claims description 53
- 239000006260 foam Substances 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 14
- 239000000344 soap Substances 0.000 claims description 14
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical compound [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 claims description 10
- 235000019738 Limestone Nutrition 0.000 claims description 7
- 239000006028 limestone Substances 0.000 claims description 7
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- JXSRRBVHLUJJFC-UHFFFAOYSA-N 7-amino-2-methylsulfanyl-[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile Chemical compound N1=CC(C#N)=C(N)N2N=C(SC)N=C21 JXSRRBVHLUJJFC-UHFFFAOYSA-N 0.000 claims description 3
- 230000009969 flowable effect Effects 0.000 claims description 3
- XHQSLVIGPHXVAK-UHFFFAOYSA-K iron(3+);octadecanoate Chemical compound [Fe+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XHQSLVIGPHXVAK-UHFFFAOYSA-K 0.000 claims description 3
- 235000019359 magnesium stearate Nutrition 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 229940116364 hard fat Drugs 0.000 claims 1
- 239000011435 rock Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 abstract description 3
- 235000014113 dietary fatty acids Nutrition 0.000 abstract description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000000194 fatty acid Substances 0.000 abstract description 3
- 229930195729 fatty acid Natural products 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 2
- RSWGJHLUYNHPMX-ONCXSQPRSA-N abietic acid Chemical compound C([C@@H]12)CC(C(C)C)=CC1=CC[C@@H]1[C@]2(C)CCC[C@@]1(C)C(O)=O RSWGJHLUYNHPMX-ONCXSQPRSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 238000009413 insulation Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000004575 stone Substances 0.000 description 6
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 238000007596 consolidation process Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/041—Aluminium silicates other than clay
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/08—Fats; Fatty oils; Ester type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
- C04B24/085—Higher fatty acids
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a foamed warm mix recycled asphalt mixture, which comprises, by weight, 30-50 parts of a recycled asphalt pavement material; 2-5 parts of petroleum asphalt; 45-65 parts of new aggregate; 2-10 parts of mineral powder; and 0.2-0.4 part of a mineral foaming warm mix agent. Specifically, the mineral foaming warm mix agent includes inorganic aluminosilicate with a water content of 18%-23% and a fatty acid salt. The foamed warm mix recycled asphalt mixture provided by the invention has stable performance, greatly lowered mixing temperature, obviously increased old material utilization ratio, and has the characteristics of green and environmental protection, energy saving and emission reduction, and sustainable development, etc. The invention also provides a preparation method of the foamed warm mix recycled asphalt mixture.
Description
Technical field
The invention belongs to technical field of road engineering materials, more particularly to a kind of foaming warm-mixed recycled asphalt mixture and
Its preparation method
Background technology
By the end of the year 2014, national total mileage of highway number reaches 4,460,000 kilometers, and highway total kilometrage number reaches 11.19 ten thousand
Kilometer.The major part of new highway is asphalt concrete pavement, how to manage, maintenance these highways good have been current China
The important topic that highway division faces.According to the projected life (15～20 years) of bituminous paving, the highway having at present enters
Enter big or middle to repair the phase.
Waste asphalt mixture simply functionally decreases, and Colophonium is aging, and performance of gathering materials can also utilize.Cause
This, by the recovery to waste asphalt mixture, adding suitable new pitch and newly gathering materials, heating uniform mixing is completely permissible
Make new pitch compound and be applied to pavement structure.So solve waste asphalt mixture pollution environment it is also possible to save a large amount of
Building stones and petroleum resources, the meaning that building stones, the reuse of Colophonium resource are sent out during the sustainable development of China is had very.
For ensureing construction workability, hot recycling drop temperature is higher, and such as new pitch is matrix pitch, its heating-up temperature with
Modified pitch is close, causes the secondary aging of Bituminous concrete surface, for keeping reworked material performance it is necessary to limit old material ratio, reworked material
Temperature is brought into mainly by virgin material and is mixed and stirred pot, and for avoiding building stones to go bad, virgin material heating-up temperature is unable to infinite height, therefore, improves old material
The space of consumption is less, and the old material consumption of reclaimed asphalt mixture is usually no more than 30% at this stage, significantly limits this technology and pushes away
Wide application.
Additionally, the moisture that conventional fossil foams in warm-mixing agent is at 100 DEG C about with superfine state sustained release out, with
Asphalt grouting is allowed to foam, and reduces asphalt viscosity, makes Colophonium uniform with aggregate blending under relatively low temperature conditionss,
Foamable reaction in liquid phase binder plays the effect of lubricant, plays warm mix effect, but because moisture is present in Colophonium and collection
In material, Colophonium is had higher requirements with the adhesiveness gathered materials, have certain impact on the water stabilizing of asphalt.
Content of the invention
For solving the problems, such as old material adding proportion and the foaming Warm-Mix Bitumen Mixture water stability of reclaimed asphalt mixture,
The warm-mixed recycled asphalt mixture the invention provides one kind foams, this foaming warm-mixed recycled asphalt mixture effectively reduces regeneration
Colophonium mix and stir temperature and the water stability improving asphalt, substantially increase the use of reclaimed asphalt mixture old material
Ratio.
For solving above-mentioned technical problem, the present invention provides a kind of foaming warm-mixed recycled asphalt mixture, including：Reclaim Colophonium
Ground surface material 30-50 part；Asphalt 2-5 part；Newly gather materials 45-65 part；Breeze 2-10 part；Mineral foaming warm-mixing agent 0.2-0.4
Part；Above deal is all counted by weight；Wherein, described mineral foaming warm-mixing agent includes moisture content is the inorganic of 18%-23%
Aluminosilicate and soap.
Preferably, described recovery asphalt pavement material is the reworked material after bituminous paving crushing and screening after milling, including
Thick reworked material and thin reworked material.
Preferably, described newly gather materials for one or more of diabase, basalt, limestone.
Preferably, described breeze is limestone mineral powder.
Preferably, described inorganic silicon-aluminum hydrochlorate and the mass ratio of described soap are 11～15：1.
Preferably, described soap be calcium stearate, magnesium stearate, zinc stearate, ferric stearate, in copper stearate
One or more.
In addition, the present invention also provides a kind of preparation method of above-mentioned foaming warm-mixed recycled asphalt mixture, including following
Step：
(1) it is added to reclaiming after asphalt pavement material and newly gathering materials heats and mixes and stirs in pot, pre- mix 80-100s；
(2) asphalt is heated to being added to after flowable state and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon stone
The surface of oil asphalt, mixes and stirs 80-100s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 80-100s, after mix, the compound of gained is put into constant temperature oven
Middle insulation 0.5-2h, that is, obtain the warm-mixed recycled asphalt mixture that foams；
Preferably, in described step (1), described 110 DEG C -130 DEG C of heating-up temperature reclaiming asphalt pavement material.
Preferably, in described step (3), the temperature of described constant temperature oven is foaming warm-mixed recycled asphalt mixture discharging
Forming temperature.
The invention has the beneficial effects as follows：It is different from the situation of prior art, the present invention uses moisture content for 18%-23% no
The mixture of machine aluminosilicate and soap, as the foaming warm-mixing agent of warm mix regeneration asphalt, make use of the amphiphilic of soap
Property and transition-metal cation form coordinating principle by force with Colophonium, improve the surface lipophile of warm-mixing agent, thus significantly
Improve the water stability of asphalt.Additionally, the surface activity of soap can reduce the interface interaction of Colophonium, can improve
The rammability of asphalt, and then reduce the required temperature of compound compacting, thus reaching the use effectively improving old material
The purpose of ratio.The foaming warm-mixed recycled asphalt mixture stable performance of the present invention, mixes and stirs temperature and substantially reduces, old material using than
Example significantly improves, and has the features such as environmental protection, energy-saving and emission-reduction and sustainable development.The foaming warm mix regeneration asphalt of the present invention
Carry out being incubated 0.5-2h in constant temperature oven after proposing asphalt discharging in the preparation method of compound, given full play to mineral
The foam performance of foaming warm-mixing agent, further increase asphalt can consolidation effect.
Specific embodiment
The present invention provides a kind of foaming warm-mixed recycled asphalt mixture, including：Reclaim asphalt pavement material 30-50 part；Stone
Oil asphalt 2-5 part；Newly gather materials 45-65 part；Breeze 2-10 part；Mineral foaming warm-mixing agent 0.2-0.4 part；Above deal is all by weight
Number meter；Wherein, described mineral foaming warm-mixing agent includes inorganic silicon-aluminum hydrochlorate and the soap that moisture content is 18%-23%.
Wherein, reclaim the reworked material that asphalt pavement material is after bituminous paving crushing and screening after milling, regenerate including thick
Material and thin reworked material.
Wherein, newly gather materials for one or more of diabase, basalt, limestone.
Wherein, breeze is limestone mineral powder.
Wherein, inorganic silicon-aluminum hydrochlorate and the mass ratio of described soap are 11～15：1.
Wherein, soap be one of calcium stearate, magnesium stearate, zinc stearate, ferric stearate, copper stearate or
Multiple.
The present invention also provides a kind of preparation method of above-mentioned foaming warm-mixed recycled asphalt mixture, comprises the following steps：
(1) it is added to reclaiming after asphalt pavement material and newly gathering materials heats and mixes and stirs in pot, pre- mix 80-100s；
(2) asphalt is heated to being added to after flowable state and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon stone
The surface of oil asphalt, mixes and stirs 80-100s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 80-100s, after mix, the compound of gained is put into constant temperature oven
Middle insulation 0.5-2h, that is, obtain the warm-mixed recycled asphalt mixture that foams；
Wherein, in described step (1), described 110 DEG C -130 DEG C of heating-up temperature reclaiming asphalt pavement material.
Wherein, in described step (3), the temperature of described constant temperature oven is that foaming warm-mixed recycled asphalt mixture discharging becomes
Type temperature.
The following specific embodiment of the present invention by being given and comparative example understand the present invention with will be further elaborated, but it
Be not limitation of the invention.
Wherein, in the present invention, used in embodiment 1-4 and comparative example 1, aggregate grading is WAC-20 type, and specification is table
Shown in 1：
Table 1
The aggregate grading of embodiment 5 and comparative example 2 use is WSMA-13 type, and specification is shown in table 2：
Table 2
Embodiment 1
(1) it is heated to 110 DEG C by reclaiming asphalt pavement material, add diabase post-heating to 160 DEG C, then be added to together
Mix and stir pre- mix 80s in pot；
(2) asphalt is heated to being added to after 145 DEG C and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon asphalt
Surface, mix and stir 80s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 80s, after mix will put into the compound of gained in constant temperature oven
Insulation 0.5h, that is, obtain the warm-mixed recycled asphalt mixture that foams；The performance indications of gained foaming warm-mixed recycled asphalt mixture are such as
Shown in table 3.
Embodiment 2
(1) it is heated to 120 DEG C by reclaiming asphalt pavement material, add basalt post-heating to 160 DEG C, then be added to together
Mix and stir pre- mix 90s in pot；
(2) asphalt is heated to being added to after 145 DEG C and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon asphalt
Surface, mix and stir 90s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 90s, after mix will put into the compound of gained in constant temperature oven
Insulation 1h, that is, obtain the warm-mixed recycled asphalt mixture that foams；The performance indications such as table 3 of gained foaming warm-mixed recycled asphalt mixture
Shown.
Embodiment 3
(1) it is heated to 130 DEG C by reclaiming asphalt pavement material, add limestone post-heating to 160 DEG C, then be added to together
Mix and stir pre- mix 100s in pot；
(2) asphalt is heated to being added to after 145 DEG C and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon asphalt
Surface, mix and stir 100s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 100s, after mix will put into the compound of gained in constant temperature oven
Insulation 1.5h, that is, obtain the warm-mixed recycled asphalt mixture that foams；The performance indications of gained foaming warm-mixed recycled asphalt mixture are such as
Shown in table 3.
Embodiment 4
(1) it is heated to 130 DEG C by reclaiming asphalt pavement material, add diabase post-heating to 190 DEG C, then be added to together
Mix and stir pre- mix 100s in pot；
(2) asphalt is heated to being added to after 165 DEG C and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon asphalt
Surface, mix and stir 100s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 100s, after mix will put into the compound of gained in constant temperature oven
Insulation 2h, that is, obtain the warm-mixed recycled asphalt mixture that foams；The performance indications such as table 3 of gained foaming warm-mixed recycled asphalt mixture
Shown.
Embodiment 5
(1) it is heated to 130 DEG C by reclaiming asphalt pavement material, adds basalt post-heating to 190 DEG C, add lignin fine
Dimension, then be added to together and mix and stir pre- mix 100s in pot；
(2) asphalt is heated to being added to after 165 DEG C and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon asphalt
Surface, mix and stir 100s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 100s, after mix will put into the compound of gained in constant temperature oven
Insulation 1h, that is, obtain the warm-mixed recycled asphalt mixture that foams；The performance indications such as table 3 of gained foaming warm-mixed recycled asphalt mixture
Shown.
Comparative example 1
(1) it is heated to 110 DEG C by reclaiming asphalt pavement material, add diabase post-heating to 160 DEG C, then be added to together
Mix and stir pre- mix 80s in pot；
(2) asphalt is heated to being added to after 145 DEG C and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon asphalt
Surface, mix and stir 80s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 80s, after mix will put into the compound of gained in constant temperature oven
Insulation 0.5h, that is, obtain the warm-mixed recycled asphalt mixture that foams；The performance indications of gained foaming warm-mixed recycled asphalt mixture are such as
Shown in table 3.
Comparative example 2
(1) it is heated to 130 DEG C by reclaiming asphalt pavement material, adds basalt post-heating to 190 DEG C, add lignin fine
Dimension, then be added to together and mix and stir pre- mix 100s in pot；
(2) asphalt is heated to being added to after 165 DEG C and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon asphalt
Surface, mix and stir 100s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 100s, that is, obtain the warm-mixed recycled asphalt mixture that foams；Gained is sent out
The performance indications of bubble warm-mixed recycled asphalt mixture are as shown in table 3：
Table 3
From table 3 it can be seen that property indices all compliant in embodiment 1-5《Asphalt highway construction technology
Specification》(JTG F40-2004) related request.
Comparative example 1 compares for embodiment 1, and embodiment 1 adds the mineral foaming warm-mixing agent of fatty acid salt-modified, regeneration
The water stability of asphalt has compared with comparative example 1 and is obviously improved, and voidage is lower, and this asphalt is described
Rammability can more preferably；Compared with Example 5 relatively, embodiment 5 puts into the compound after mix in constant temperature oven to comparative example 2
After insulation 1h, the voidage of reclaimed asphalt mixture has obvious reduction compared with comparative example 2, further increases Colophonium mixing
That expects can consolidation effect.
It is different from the situation of prior art, it is 18%-23% inorganic silicon-aluminum hydrochlorate and fatty acid that the present invention uses moisture content
The mixture of salt as the foaming warm-mixing agent of warm mix regeneration asphalt, make use of the amphipathic characteristic of soap and transition metal sun from
Son and Colophonium form coordinating principle by force, improve the surface lipophile of warm-mixing agent, thus substantially increasing asphalt
Water stability.Additionally, the surface activity of soap can reduce the interface interaction of Colophonium, being compacted of asphalt can be improved
Property, and then reduce the required temperature of compound compacting, thus reaching the purpose of the use ratio effectively improving old material.The present invention's
Foaming warm-mixed recycled asphalt mixture stable performance, mixes and stirs temperature and substantially reduces, old material use ratio significantly improves, and has green
The features such as environmental protection, energy-saving and emission-reduction and sustainable development.In the preparation method of foaming warm-mixed recycled asphalt mixture of the present invention
Carry out being incubated 0.5-2h in constant temperature oven after proposing asphalt discharging, given full play to the foaminess of mineral foaming warm-mixing agent
Can, further increase asphalt can consolidation effect.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technical fields, all
It is included within the scope of the present invention in the same manner.
Claims (9)
1. a kind of foaming warm-mixed recycled asphalt mixture is it is characterised in that include：
Above deal is all counted by weight；
Wherein, described mineral foaming warm-mixing agent includes inorganic silicon-aluminum hydrochlorate and the soap that moisture content is 18%-23%.
2. foaming warm-mixed recycled asphalt mixture according to claim 1 is it is characterised in that described recovery asphalt road facestock
Reworked material after expecting for bituminous paving crushing and screening after milling, including thick reworked material and thin reworked material.
3. according to claim 1 foaming warm-mixed recycled asphalt mixture it is characterised in that described newly gather materials green for brightness
One or more of rock, basalt, limestone.
4. foaming warm-mixed recycled asphalt mixture according to claim 1 is it is characterised in that described breeze is limestone deposit
Powder.
5. according to claim 1 foaming warm-mixed recycled asphalt mixture it is characterised in that described inorganic silicon-aluminum hydrochlorate with
The mass ratio of described soap is 11～15：1.
6. foaming warm-mixed recycled asphalt mixture according to claim 5 is it is characterised in that described soap is Hard Fat
One or more of sour calcium, magnesium stearate, zinc stearate, ferric stearate, copper stearate.
7. a kind of preparation method of foaming warm-mixed recycled asphalt mixture according to claims 1 to 6 it is characterised in that
Comprise the following steps：
(1) it is added to reclaiming after asphalt pavement material and newly gathering materials heats and mixes and stirs in pot, pre- mix 80-100s；
(2) asphalt is heated to being added to after flowable state and mixes and stirs in pot, mineral foaming warm-mixing agent is sprinkling upon oil drip
Blue or green surface, mixes and stirs 80-100s in mix pot；
(3) breeze is added to and mixes and stirs in pot, mix and stir 80-100s, after mix put into the compound of gained in constant temperature oven and protect
Warm 0.5-2h, that is, obtain the warm-mixed recycled asphalt mixture that foams.
8. preparation method according to claim 7 is it is characterised in that in described step (1), described recovery bituminous paving
110 DEG C -130 DEG C of the heating-up temperature of material.
9. preparation method according to claim 7 is it is characterised in that in described step (3), the temperature of described constant temperature oven
Spend for the warm-mixed recycled asphalt mixture discharging forming temperature that foams.
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| CN115572105B (en) * | 2022-10-31 | 2023-09-12 | 熙恒科技(常熟)有限公司 | Foam warm mix asphalt using reclaimed materials and preparation method thereof |
| CN116854406A (en) * | 2023-07-07 | 2023-10-10 | 常熟路桥工程有限公司 | Foaming warm mix asphalt mixture and preparation method thereof |
| CN116854406B (en) * | 2023-07-07 | 2024-03-26 | 常熟路桥工程有限公司 | Foaming warm mix asphalt mixture and preparation method thereof |
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