CN105603845A - Regeneration process of waste asphalt micro powder - Google Patents
Regeneration process of waste asphalt micro powder Download PDFInfo
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- CN105603845A CN105603845A CN201610165482.5A CN201610165482A CN105603845A CN 105603845 A CN105603845 A CN 105603845A CN 201610165482 A CN201610165482 A CN 201610165482A CN 105603845 A CN105603845 A CN 105603845A
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- Prior art keywords
- asphalt
- particle
- micro mist
- milling
- waste asphalt
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/24—Binder incorporated as an emulsion or solution
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
Abstract
The invention provides a regeneration process of waste asphalt micro powder. The process comprises the following steps: milling an asphalt concrete pavement, wherein the milling thickness of the first layer is 1-5cm, and the milling thickness of the second layer is 5-10cm; sieving the milling material of the first layer, and mixing the obtained particles with the particle sizes of 10-31.5mm with emulsified asphalt, hydroisomerized residue oil and the like for regeneration; and crushing the milling material of the second layer, sieving and collecting particles with the particle sizes of 10-20mm, and mixing the obtained particles with fine particles of the milling material of the first layer, residue oil and the like for regeneration. According to the method, the waste asphalt in the milling material can be fully recycled in relatively low cost, and meanwhile, road paving requirements can be well met.
Description
Technical field
The present invention relates to a kind of regeneration technology of waste asphalt micro mist, relate more specifically to a kind of dropThe regeneration technology of the waste asphalt micro mist of blue or green concrete road surface.
Background technology
In the last few years, along with the fast development of highway in China cause, the mileage of highway was more nextLonger. Some highways of building are in early days faced with overhaul or enlarging, how to utilize and damageTop course, particularly asphalt surface course be subject to people's attention gradually.
CN102359048A discloses a kind of crushing reusing system and work thereof of waste milling materialProcess, comprises feed hopper, feeding belt, feed back band, compound grinding machine, forced air cooler, whirlwindDeduster, rewinding go out wind sleeve, and feed hopper connects by the charging aperture at feeding belt and compound grinding machine topConnect, the side of compound grinding machine or bottom are connected with forced air cooler by pipeline, compound grinding machineDischarging opening is connected with feed hopper by feed back band, and the side of compound grinding machine is by the wind being obliquely installedMaterial pipe is connected with cyclone dust collectors, and the top of cyclone dust collectors goes out wind sleeve by pipeline and rewinding and connectsConnect.
CN103437267A discloses a kind of side of bituminous paving milling material regeneration flexible constructionMethod, comprises the following steps: to delimit repairing scope, cuts disease along the saw kerf → milling of scope surroundingLayer, removes waste material, and high pressure air blowing machine blows off repairing interface, interface is dried with dryerDry, spray emulsified asphalt adhesion coating and be covered with interface, placement in layers, compaction in layers, compactness will beMore than 98%, be coated with girth seam with waterproof with emulsified asphalt, be cooled to 50 DEG C to let pass when following.
CN102765902A discloses a kind of preparation of emulsified asphalt cold recycled asphalt mixtureMethod, comprises the steps: to obtain old asphalt pavement milling material sample and determines its grating, reallyDetermine the grating of filler, determine the weight of thick milling material in raw material, thin milling material, cement and electroslagAmount percentage composition, determines optimum moisture content a, determines emulsified asphalt optimum amount, determines bestMoisture content b, checking, mixes and stirs Cold Recycled Mixture with Emulsified Asphalt.
CN102424605A discloses a kind of environment protection pavement conserving material, comprises following weight hundredDivide the component of content: bitumeniferous milling material 80-200 part, rare earth siccative 0.5-2 part, gasoline0.8-3 part, basalt building stones 30-150 part.
CN103113044A discloses the High Modulus Asphalt Mixture of the old material of a kind of admixture, its byGather materials, electroslag and TLA modified pitch composition, wherein gather materials by the old material after road-surface millingWith new components of mixture, TLA modified pitch is prepared by matrix pitch and lake asphalt, wherein old materialAccount for 30%～70% of High Modulus Asphalt Mixture gross mass; By the aged asphalt in old material withTLA modified pitch is regarded binding material entirety as, and binding material with the mass ratio gathering materials isThe mass fraction that 4.5%～6.5%, TLA modified pitch accounts for High Modulus Asphalt Mixture is4.3%～6.1%; Lake asphalt accounts for 30%～50% of TLA modified pitch gross mass; Electroslag accounts for0.5%～4% of High Modulus Asphalt Mixture gross mass; Surplus is for newly gathering materials.
WO2008/006208A1 discloses the renovation process of bituminous paving, wherein uses multistageSection round-robin method is carried out the regeneration on road surface.
" performance evaluation of bituminous paving milling material ", Jiao Xiaolei, highway engineering, the 37th volume,The 5th phase, in October, 2012, in conjunction with arterial highway maintenance engineering, to regeneration milling materialRecovery asphalt performance and gradation composition carried out comprehensive analysis of experiments, and proposed to carry outThe pitch milling material relevant nature that need to consider when reworked material design.
" waste edible oil is for the application prospect analysis of asphalt-regenerating ", Leng Bin shore etc., oil dropGreen grass or young crops, in October, 2013, the 27th the 5th phase of volume was summarized the classification and processing skill of waste edible oilThe aspects such as art, waste edible oil regeneration effect, regeneration mechanism and the application technology to aged asphaltResearch.
But in above-mentioned document and other prior art, or reducing/regenerating technique is too multipleAssorted, cause regeneration cost higher, or the waste asphalt of regeneration can not meet wellRoad making requirement. Thereby this area needs one can obtain at lower cost waste asphalt micro mistThe method that makes it fully regenerate and utilize.
Summary of the invention
For addressing the above problem, the inventor through further investigation and great many of experiments, provide withLower technical scheme.
In one aspect of the invention, provide a kind of regeneration technology of waste asphalt micro mist, this workSkill comprises the following steps:
(1) asphalt concrete pavement is carried out to milling, ground floor milling thickness is 1-5cm,Second layer milling thickness is 5-10cm;
(2) ground floor milling material is sieved, collect the particle of 10-31.5mm, will be largeAfter the Particle Breakage of 31.5mm, again sieve, obtain the particle of 10-31.5mm, noteMake particle A; By the particle of 10-31.5mm obtaining and emulsified asphalt, hydrotreatment residual oil with(90-95): (5-10): weight ratio (5-10) is mixed, stirred, then leave standstill 5-10 days,Pulverize afterwards, obtain waste asphalt micro mist, be denoted as the first waste asphalt micro mist, will be less thanThe particle of 10mm is collected for subsequent use, and this particle is denoted as particle B; Wherein, described hydrotreatment slagOil is to carry out hydroisomerization acquisition under Pt-Mg/ molecular sieve hydroisomerisation catalysts existsOil plant;
(3) second layer milling material is carried out to fragmentation, the particle of 10-20mm is collected in screening, noteMake particle C, by additional to particle C and particle B, cement, plain asphalt, residual oil, concreteAgent, stabilizing agent are with (40-45): (20-30): (5-10): (5-10): (3-8): (0.001-0.05): weight (2-5)Amount, than mixing, stirring, then leaves standstill 10-20 days, pulverizes afterwards, obtains waste and oldPitch micro mist, is denoted as the second waste asphalt micro mist, the residual oil using in this step and step (2)The residual oil that carries out hydrotreatment can be identical or different.
Existing report residual oil can be used as low viscosity component and regenerates for aged asphalt, still, ifWhen as in prior art, direct use residual oil is for the regeneration of waste asphalt, for roadWhen supercrust, under the conditions such as illumination, air contact, be very easy to oxidation, thereby cause pitchSurface layer is aging. The inventor after further research, finds by residual oil is carried out to hydrotreatmentCan make its stability greatly increase.
And second layer asphalt concrete pavement milling material is owing to being not used in making road deck, can notSuffer illumination and isolated with air, be therefore difficult for generation aging, can not carry out hydrotreatment.
In the present invention, the use of emulsified asphalt makes it possible to ensure the life of reclaimed asphalt mixtureYield and quality, for example, can guarantee water stability and the high-temperature stability of road.
The inventor studies discovery, and cement not only can play binding material and do in order to improve compoundInitial stage and later strength, but also can play the modifier effect of emulsified asphalt.
Preferably, described emulsified asphalt is for splitting slowly fast solidifying cationic emulsified asphalt.
Particularly preferably, described emulsified asphalt is by using N-[2-hydroxyl-3-polyoxyethylene nonyl phenyl secondAlkene ether] oxypropyl trimethyl ammonium chloride makes as emulsifying agent. The inventor finds, is somebody's turn to do when usingWhen emulsifying agent is prepared emulsified asphalt, can realize larger emulsifying effectiveness with minimum consumption.
In a preferred embodiment, used in the preparation of the first reworked material and the second reworked materialPresetting period >=the 3h of cement, final setting time >=6h, 3 days compression strength >=12.0Mpa, 28 daysCompression strength >=33.5Mpa. The stability of this cement is qualified. The cement of selecting this specification is to fillPoint consider that the various character of reworked material make, its selection course need to be carried out a large amount of worksJourney experiment and complicated work.
Described residual oil can be the residual oil in petroleum refining.
The dip-calcination method preparation routinely of Pt-Mg/ molecular sieve hydroisomerisation catalysts.Described molecular sieve is preferably SAPO, ZSM Series Molecules sieve, for example SAPO-11 molecular sieve.In catalyst, Pt carrying capacity can be 0.5-1.5wt.%, and Mg carrying capacity is preferably 0.8-1.2wt.%,Preferably Pt carrying capacity is 1wt.%, and Mg carrying capacity is 0.9wt.%. Different with such catalyst hydrogenationResidual oil after structure makes asphalt-regenerating effect better.
Described hydroisomerization is preferably at the temperature of 205 DEG C-345 DEG C and 2.70-27.50MPaUnder pressure, implement.
The catalyst of the application of the invention and hydroconversion condition, can make macromolecular substances be fallenSeparate, thereby reduce viscosity, meanwhile, key easy the most oxidized in residual oil or group are also obtainedFormer saturated and stable, simultaneously can not cause again being reduced completely, retained part unsaturated bond fromAnd be the effect that pitch has played antioxidant, the residual oil of this hydroisomerization is to useless pitch in additionThere is good wellability. Hydroisomerization treatment process such in regenerating waste asphalt is existingHave the report that still belongs to the first time in technology, its effect is that previously institute was unanticipated.
Inventor's discovery, the particularly suitable top course of described regeneration technology exceedes 7 for being on active serviceThe asphalt concrete pavement in year.
Described stabilizing agent be preferably ethylene-propylene copolymer, butadiene-styrene block copolymer,Isoprene-styrene block copolymer, SBS.
In milling process, the milling of ground floor preferably adopts disposable through thickness milling. Like thisMilling mode be relatively applicable to the higher ground floor of bitumen content, but to milling equipment requirement ratioHigher, for example higher to the requirement of strength of milling cutter. Cutter rotor tilt degree is preferably less than5 degree.
The fragmentation of the second milling material and screening preferably adopt, and broken-screening all-in-one carries out, thisIt is minimum that sample can make particle diameter be less than the grain amount of 10mm. Such integrated device can makeGrain is sized out in the time meeting 10-20mm, has avoided by further broken generation. ?(or other can play the broken portion of fragmentation to the broken stirring wheel of broken-screening all-in-onePart) preferably formed by ferrous alloy, the consisting of of described ferrous alloy, based on this ferrous alloyGross weight meter: 0.10-0.65wt% carbon, 1.5-4.0wt% chromium, 0.2-0.8wt% molybdenum, 0.2-0.8Wt% vanadium, 0.02-0.05wt% silicon, and 0.01-0.02wt% phosphorus, surplus is iron and inevitableImpurity, thereby the surface of wherein said broken stirring wheel preferably carried out nitrogen-hardening process toolHave the superficial layer of sclerosis, the thickness of this superficial layer is 0.01-0.5mm. By using such closingThe broken stirring wheel that gold forms, due to its higher shear strength, can make particle diameter be less thanThe particle of 10mm is less, in addition, due to its good thermal conductivity, can farthest keep awayExempt from the excessive intensification in crushing and screening process.
In the present invention, described concrete admixture particularly preferably comprises or is as follows by makingThe copolymer that monomer (I) and monomer (II) copolymerization obtain:
(I)
Wherein R1For the alkyl of C1-C6, for example ethyl, R2For example, for the alkyl of C2-C8,Propyl group, the integer that n is 3-6; With
(II) α, β-aromatics unsaturated carboxylic acid;
Wherein monomer (I) and weight ratio (II) are 60-90:10-40, described copolymerWeight average molecular weight is 600-1800.
In described structure, the existence of the ethoxy unit of repetition has further strengthened making coagulationThe water-reducing property of soil, thus overcome the defect of the concrete water reducing ability deficiency being made by reworked material.
Most preferably, described α, β-aromatics unsaturated carboxylic acid has following chemical structural formula:
Find, by replacing at F for position between two of phenyl ring, can further strengthen subtracting of copolymerWater-based energy, thus can in the roadbed material that uses the second reworked material, add and be low to moderate 0.01 weightThe described additive of amount % just can be realized required water-reducing property.
This additive polymer with excellent water-reducing property of the present invention or its analog are stillThere is not report.
Polymerization can adopt the polymerization of this area routine to carry out, for example polymerisation in bulk,Polymerisation in solution, emulsion polymerization or suspension polymerisation.
The inventor finds through research, by adding such additive, can provide excellentWater-reducing property, prevent that the mobility of the road filling that waste asphalt makes is along with the time fallsLow, be very beneficial for constructing in road fills, and make it possible to effectively reduce cementUse, overcome the defect of water-reducing property and the undercapacity of the second reworked material, make road strongSpend highly, meet necessary requirement.
In another aspect of this invention, the waste asphalt that also provides described regeneration technology to obtain is micro-The application of powder, first, second waste asphalt micro mist for the surface layer of making Flexible Base and/ or upper basic unit.
In the utilization of reworked material of the present invention, preferably adopt following technique to carry out: will mix and stirThe first waste asphalt micro mist or the second waste asphalt micro mist adopt according to hot-mix asphalt mixturePaving Techniques paves, and the speed of paving is 1.0-2.0m/min, steel wheel first pressing 3 times, rubber tirePress again 3 times, steel wheel final pressure 3 times, construction finishes rear maintenance 3～6d, and road surface water content is fallenTo 1.5 % by weight, wherein in the time paving the first waste asphalt micro mist, broken at emulsified asphaltBefore breast, to carry out in time rolling operation.
When adopting, the first waste asphalt micro mist and second waste asphalt of the inventive method acquisition are micro-When powder carries out urban road laying, test its 28d unconfined compressive strength up to 1.68MPa, thisThe requirement of strength (0.8MPa) that fully meets advanced road paver, has even reached heightThe requirement of strength of speed highway, shows that the waste asphalt micro mist that method of the present invention obtains can obtainVery good regeneration.
Specific embodiments
Below in conjunction with following examples and comparative example, the present invention is described in further detail, butEmbodiments of the present invention are not limited to this.
Embodiment 1
The preparation of concrete admixture
The chemical structural formula of monomer (I) is:
Wherein R1For methyl, R2For ethyl, n is 5, and this monomer can pass through polyethylene glycolWith methyl base acrylic acid according to conventional esterification process carry out esterification, then by esterification products and ethoxyBase chlorine is eliminated reaction according to routine and is made, or can directly be purchased from Sigma-Aldrich public affairsDepartment;
The chemical structural formula of monomer (II) is:
This monomer is same commercially available from Sigma-Aldrich;
Adopt emulsion polymerization, in the round-bottomed flask to 500mL with mechanical stirring device, addEnter 80g monomer (I) and 12g monomer (II) and 200mL deionized water, stir lower logicalNitrogen, then adds 0.1g ammonium persulfate as initator, is warming up to polymerization temperature, polymerizationTemperature is 80 DEG C, keeps reaction 4 hours, finishes to reclaim polymerizate after reaction, through measuringThe weight average molecular weight of gained copolymer is approximately 1600.
Embodiment 2
Use W2000 type milling machine, to the asphalt concrete pavement of room drop of water section high-grade highwayCarry out milling, ground floor milling thickness is 5cm, and second layer milling thickness is 50cm; ToOne deck milling material sieves, and collects the particle of 10-31.5mm, by be greater than 31.5mmAfter grain fragmentation, again sieve, obtain the particle of 10-31.5mm, be denoted as particle A; To obtainThe residual oil of the particle A of the 10-31.5mm obtaining and emulsified asphalt, hydroisomerization processing (comesFrom Yanshan Petrochemical) mix, stir with the weight ratio of 90:5:5, then leave standstill 10My god, pulverize afterwards, obtain waste asphalt micro mist, be denoted as the first waste asphalt micro mist, willThe particle collection that is less than 10mm is for subsequent use, and this particle is denoted as particle B; Wherein, described hydrogenation placeReason residual oil is to carry out hydroisomerizing under Pt-Mg/SAPO-11 hydroisomerisation catalysts existsChange the oil plant obtaining, hydroprocessing condition is the temperature of 245 DEG C and the pressure of 15.50MPa,Pt carrying capacity is 1wt.%, and Mg carrying capacity is 0.9wt.%; Second layer milling material is carried out to fragmentation,The particle of 10-20mm is collected in screening, is denoted as particle C, by particle C and particle B, cement,Plain asphalt, residual oil, concrete admixture and SBSWeight ratio with 45:20:5:10:5:0.02:2 is mixed, is stirred, and then leaves standstill 15 days, itAfter pulverize, obtain waste asphalt micro mist, be denoted as the second waste asphalt micro mist, aforementioned residual oilIdentical. The first reworked material is for the surface layer of making Flexible Base, and the second reworked material is for pavingBuild the upper basic unit of Flexible Base, the first reworked material mixing and stirring or the second reworked material are adoptedPave according to hot-mix asphalt mixture Paving Techniques, the speed of paving is 1.5m/min, steel wheelFirst pressing 3 times, rubber tire are pressed 3 times, steel wheel final pressure 3 times again, and construction finishes rear maintenance 6d, makesRoad surface water content is down to below 1.5 % by weight, wherein in the time paving the first reworked material, in emulsificationBefore pitch breakdown of emulsion, to carry out in time rolling operation. Testing its 28d unconfined compressive strength is1.24MPa。
Comparative example 1
Repeat the operation of embodiment 2, difference is not use concrete admixture. TestIts 28d unconfined compressive strength is 0.63MPa.
Comparative example 2
Repeat the operation of embodiment 2, difference is to use commercially available polycarboxylic acid series high-performance to subtractAqua is as concrete admixture. Testing its 28d unconfined compressive strength is 0.77MPa.
From above-described embodiment and comparative example obviously, by adopting technique of the present invention, can be withLower cost is fully recycled the waste asphalt in road-surface milling material, and can makeThe road of waste asphalt making meets index of correlation requirement.
This written description use-case discloses the present invention, comprises optimal mode, and also makes this area skillArt personnel can manufacture and use the present invention. Scope that can granted patent of the present invention is wanted by rightAsk book to limit, and can comprise other example that those skilled in the art expect. If this itsIts example has the structural element of the literal language that does not differ from claims, if or thisOther example comprises and the literal language of claims equivalent structure unit without substantial differencesElement, within this other example is intended to the scope in claims. Can not cause notUnder consistent degree, by reference to all references part of reference is herein incorporated herein.
Claims (8)
1. a regeneration technology for waste asphalt micro mist, this technique comprises the following steps:
(1) asphalt concrete pavement is carried out to milling, ground floor milling thickness is 1-5cm, and second layer milling thickness is 5-10cm;
(2) ground floor milling material is sieved, collect the particle of 10-31.5mm, after being greater than the Particle Breakage of 31.5mm, again sieve, obtain the particle of 10-31.5mm, be denoted as particle A; By particle and the emulsified asphalt of the 10-31.5mm obtaining, hydrotreatment residual oil with (90-95): (5-10): weight ratio (5-10) is mixed, stirred, then leave standstill 5-10 days, pulverize afterwards, obtain waste asphalt micro mist, be denoted as the first waste asphalt micro mist, by for subsequent use the particle collection that is less than 10mm, this particle is denoted as particle B; Wherein, described hydrotreatment residual oil is the oil plant that carries out hydroisomerization acquisition under Pt-Mg/ molecular sieve hydroisomerisation catalysts exists;
(3) second layer milling material is carried out to fragmentation, the particle of 10-20mm is collected in screening, be denoted as particle C, by particle C and particle B, cement, plain asphalt, residual oil, concrete admixture, stabilizing agent is with (40-45): (20-30): (5-10): (5-10): (3-8): (0.001-0.05): weight ratio (2-5) is mixed, stir, then leave standstill 10-20 days, pulverize afterwards, obtain waste asphalt micro mist, be denoted as the second waste asphalt micro mist, the residual oil using in this step and step (2) are carried out the residual oil of hydrotreatment can be identical or different.
2. regeneration technology according to claim 1, wherein said emulsified asphalt is for splitting slowly fast solidifying cationic emulsified asphalt.
3. regeneration technology according to claim 2, wherein said emulsified asphalt is by using N-[2-hydroxyl-3-NPE] oxypropyl trimethyl ammonium chloride makes as emulsifying agent.
4. according to the regeneration technology described in any one in claim 1-3, the presetting period >=3h of the cement using in the regeneration of second layer milling material, final setting time >=6h, 3 days compression strength >=12.0Mpa, 28 days compression strength >=33.5Mpa.
5. according to the regeneration technology described in any one in claim 1-4, described residual oil is the residual oil in petroleum refining.
6. according to the regeneration technology described in any one in claim 1-5, wherein said asphalt concrete pavement is to be on active service to exceed the asphalt concrete pavement of 7 years.
7. the application of the waste asphalt micro mist obtaining according to regeneration technology described in any one in claim 1-6, first, second waste asphalt micro mist is for surface layer and/or the upper basic unit of making Flexible Base.
8. according to the application of claim 7, wherein the first waste asphalt micro mist mixing and stirring or the employing of the second waste asphalt micro mist are paved according to hot-mix asphalt mixture Paving Techniques, the speed of paving is 1.0-2.0m/min, steel wheel first pressing 3 times, rubber tire are pressed 3 times, steel wheel final pressure 3 times again, construction finishes rear maintenance 3～6d, road surface water content is down to below 1.5 % by weight, wherein, in the time paving the first waste asphalt micro mist, before emulsified asphalt breakdown of emulsion, will carries out in time rolling operation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113604063A (en) * | 2021-08-06 | 2021-11-05 | 山西诺通公路养护有限公司 | Emulsified asphalt activated and regenerated pavement repairing material |
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| WO1998007929A1 (en) * | 1996-08-16 | 1998-02-26 | Mitsubishi Materials Corporation | NOx REMOVING PAVEMENT STRUCTURE |
| CN102587250A (en) * | 2012-02-28 | 2012-07-18 | 王俊明 | Cold recycled and milled waste asphalt mixture micro-surfacing functional layer |
| CN102677566A (en) * | 2012-05-03 | 2012-09-19 | 华南理工大学 | Method for regenerating concrete pavement into asphalt pavement |
| CN103774537A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Asphalt pavement regeneration method |
| CN103774517A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Asphalt pavement recycling method by adding reclaiming agent |
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2016
- 2016-03-22 CN CN201610165482.5A patent/CN105603845A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998007929A1 (en) * | 1996-08-16 | 1998-02-26 | Mitsubishi Materials Corporation | NOx REMOVING PAVEMENT STRUCTURE |
| CN102587250A (en) * | 2012-02-28 | 2012-07-18 | 王俊明 | Cold recycled and milled waste asphalt mixture micro-surfacing functional layer |
| CN102677566A (en) * | 2012-05-03 | 2012-09-19 | 华南理工大学 | Method for regenerating concrete pavement into asphalt pavement |
| CN103774537A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Asphalt pavement regeneration method |
| CN103774517A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Asphalt pavement recycling method by adding reclaiming agent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113604063A (en) * | 2021-08-06 | 2021-11-05 | 山西诺通公路养护有限公司 | Emulsified asphalt activated and regenerated pavement repairing material |
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Application publication date: 20160525 |