CN102617968B - Cooling reclaiming agent for road and preparation method thereof - Google Patents
Cooling reclaiming agent for road and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a cooling reclaiming agent for a road, which is prepared from the following components by mass percent 2.0-3.0% of emulsifier, 0-1.0% of stabilizer, 30.0-38.0% of water, 1.0-4.0% of hydrochloric acid and the balance of modified asphalt. The preparation method comprises the following steps of: a, asphalt modification; b, preparation of liquid soap and c, emulsification. According to the cooling reclaiming agent, the properties of asphalt are fundamentally changed by modifying the matrix asphalt, enabling comonomers to be subjected to polymerization reaction in the asphalt and forming a homogeneous system with the asphalt, so that the properties of the emulsified asphalt can be improved and the cooling reclaiming agent for the road is finally formed. Therefore, the adhesion property of recycled aggregates on an asphalt road is good and the high and low temperature properties of a mixture are good.
Description
Technical field
The present invention relates to a kind of road material, particularly a kind of cold regenerator and preparation method thereof for road.
Background technology
Bituminous pavement long-term exposure is in the Nature, and under heat and the effect of oxygen, in pitch, lighting end is constantly volatilized, and is oxidized, addition and polyreaction, and along with the increase of pavement life, bituminous pavement is aging gradually, and hardening becomes fragile.After certain hour, bituminous pavement must carry out medium-capital overhauling.And the disposal of the waste asphalt material that medium-capital overhauling produces is a great problem, therefore rationally effectively utilizing waste and old ground surface material is one of important research topic of current road scientific worker.Adopt pavement recycling agent by waste asphalt material use, can save a large amount of pitch and sandstone material, cost saving, is conducive to punish waste material simultaneously, saves the energy, protection of the environment, has significant economic benefit and society, environmental benefit.
Regenerator is most important for the performance of asphalt pavement regeneration, is generally divided into solvent-borne type regenerator and aqueous regeneration agent.Common solvent type regenerator, contains lightweight oil content at present, and tar extraction thing or petroleum resin extract are as regenerator main ingredient.These regenerators contain higher fragrance and divide, volatile, and anti-aging performance of regenerated asphalt is poor, and larger to environment, human injury.Aqueous regeneration agent does not contain solvent, environment-protecting asepsis, and therefore, regenerator is also inexorable trend towards aqueous regeneration agent direction.
Now conventional aqueous regeneration agent generally be take emulsified bitumen class as main on the market, common take common emulsified asphalt as Composite Emulsified Asphalt regenerator main or that in addition in advance synthetic latex (SBS latex, SBR latex, epoxy emulsion, ACRYLIC EMULSION, EVA emulsion etc.) forms, pitch and latex is simple mixing just, do not form homogeneous system.Develop a kind of novel cold regenerator of acrylic resin emulsified bitumen class environmental protection herein, make comonomer polyreaction in pitch, form homogeneous system with pitch, fundamentally change the performance of pitch, the final cold regenerator product forming, reclaim and to gather materials that to wrap up in attached property good with bituminous pavement, compound high temperature performance is good.
Summary of the invention
Object of the present invention is exactly for the deficiencies in the prior art, provides a kind of by changing the performance of pitch, bituminous pavement is reclaimed gather materials to wrap up in attached property good, good a kind of of compound high temperature performance cold regenerator and preparation method thereof for road.
For achieving the above object, the present invention adopts following technical scheme:
The cold regenerator of road, is characterized in that: the component by following weight percent is made:
Emulsifying agent: 2.0～3.0%; Stablizer: 0～1.0%; Water: 30.0～38.0%; Hydrochloric acid: 1.0～4.0%; Surplus is modifying asphalt;
Described emulsifying agent is for splitting slowly slow hardening type cationic emulsifier;
Slowly split slow hardening type cation asphalt emulgent (JWRH-MM) and be a kind of wooden amine, split slow hardening type cation asphalt emulgent slowly, this product adopts advanced operational path synthetic, cohesiveness and the dilution stability with good mix, excellence, during use, consumption is few, emulsifying capacity is strong, the multiple trade mark pitch of energy emulsification, meets the Ministry of Communications's emulsified bitumen standard-required with the bitumen emulsion of this product configuration.In road construction work, be specially adapted to that slurry seal, cold mixing cold-application, basic unit are stable, sticking layer oil, surface treatment and repair hole groove etc.This emulsifying agent has low price, to advantages such as building stones requirement are not strict, be applicable to some can seal the car time long, the cheap area of emulsifying agent price request is used;
Described stablizer is one or more in calcium chloride, sodium phosphate, polyacrylic acid, polyvinyl alcohol, methylcellulose gum;
The weight percent concentration of described hydrochloric acid is: 36%～37.5%;
Described modifying asphalt is made by the component of following weight percent:
Comonomer: 3.0～25%; Initiator: 0.006%～6%; Viscosity-depression agent: 1.0～4.0%; Surplus is pitch;
Described comonomer is made by the component of following weight percent: vinylbenzene: 0～10.0%; (methyl) methyl acrylate: 0～10.0%; (methyl) vinylformic acid: 0～10.0%; Butyl acrylate: 20.0～40.0%; Isooctyl acrylate monomer: 0～15.0%; Lauryl acrylate: 0～20.0%; (methyl) vinylformic acid stearyl 0～15.0%;
Described initiator is one or more in dibenzoyl peroxide, dilauroyl peroxide, peroxide tert pivalate ester, di-isopropyl peroxydicarbonate, isopropyl benzene hydroperoxide, Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile);
Described viscosity-depression agent is the polyethylene wax of carbonatoms between 40～80, preferably side chain less and the polyethylene wax of carbonatoms between 40～80, put in people's specification sheets.
Preferably, described viscosity-depression agent be the Sasobit that produces of South Africa Sasol Wax company, one or more in SasoWMX.Sasobit is the product of South Africa SasoWax, can reduce by chemical reaction the viscosity of asphalt, reduces by 18～54 ℃ of production temperature.Sasobit, SasoWMX modifying asphalt not only its rutting resistance are high, and modified asphalt mixture compactness also obviously improves in addition.
Preferably, described pitch is that penetration degree (25 ℃, 5s, 100g) [unit: 0.1mm] is 70～110 petroleum pitch.Pitch is that penetration degree is one of main quality index of pitch, means the ability of pitch soft or hard degree and denseness, opposing shear fracture, reflects the index of the solution solvent viscosity ratio of pitch under certain condition.Within 25 ℃ and 5 second time, under the loading of 100 grams, the degree of depth that standard pin vertically penetrates pitch sample is penetration degree, take 0.1mm millimeter as unit.
The preparation method of cold regenerator for above-mentioned road, is characterized in that comprising the following steps:
A. asphalt modification
Modifying asphalt provided by the invention is according to following step preparation:
(1), by asphalt heating to 100～150 ℃, add viscosity-depression agent after sloughing moisture, reaction 0.5～1h;
(2), add 30% initiator in pitch, eliminate the impurity that affects polyreaction in pitch, reaction 10～60min;
(3), add 10～30% comonomers and 30% initiator, reaction 10～40min;
(4), add remaining comonomer and initiator, reaction 2～4h, the modifying asphalt described in obtaining;
B. soap lye preparation
Emulsifying agent, hydrochloric acid and water are mixed with to soap lye by metering, are heated to 60～70 ℃;
C. emulsification: heat modification pitch to 130～150 ℃, above-mentioned soap lye and pitch are carried out, after emulsification production, being emulsified bitumen finished product in emulsifying device.
A kind of road of the present invention with the beneficial effect of cold regenerator and preparation method thereof is, modification from matrix pitch, make comonomer polyreaction in pitch, form homogeneous system with pitch, fundamentally change the performance of pitch, thereby improve the performance of emulsified bitumen, the final cold regenerator product for road forming, reclaim and to gather materials that to wrap up in attached property good with bituminous pavement, compound high temperature performance is good.
embodimentbelow the present invention is further illustrated, but therefore do not limit the present invention among described scope of embodiments.
embodiment 1
(1) preparation of comonomer
8 parts of vinylbenzene, 10 parts of methyl acrylates, 5 parts of vinylformic acid, 40 parts of butyl acrylates, 12 parts of Isooctyl acrylate monomers, 15 parts of lauryl acrylates, mix and form comonomer under 10 parts of (methyl) vinylformic acid stearyl normal temperature;
(2) preparation of modifying asphalt
70 parts of matrix pitches are heated to 100～150 ℃, add 4 portions of viscosity-depression agents after sloughing moisture, reaction 0.5～1h; Add 4.5 parts of initiators in pitch, remove the impurity that affects polyreaction in pitch, reaction 10～60min; Add 10 parts of above-mentioned comonomers and 0.5 part of initiator, reaction 10～40min; Drip 10.5 comonomers and 0.5 part of initiator, in 2～4h, add, add follow-up continuous insulation reaction 1.5～4h, obtain described modifying asphalt;
(3) soap lye preparation
3 parts of E4875 type emulsifying agents (Akzo Nobel N.V.), 1 part of polyvinyl alcohol, 38 parts of water and 3 parts of hydrochloric acid are mixed with to soap lye, are heated to 60～70 ℃;
(4) asphalt emulsification
Heat above-mentioned 55 parts of modifying asphalt to 130～150 ℃, above-mentioned soap lye and modifying asphalt are carried out after emulsification production in emulsifying device, be the cold regenerator finished product of emulsified bitumen.
Cold regenerator performance index are in Table 1.
Regenerating mixture performance detects according to grating and the index in < < asphalt highway regeneration techniques standard > >, in Table 2.
Embodiment 2
(1) preparation of comonomer
8 parts of methyl acrylates, 10 parts of vinylformic acid, 32 parts of butyl acrylates, 15 parts of Isooctyl acrylate monomers, 20 parts of lauryl acrylates, mix and form comonomer under 15 parts of (methyl) vinylformic acid stearyl normal temperature;
(2) preparation of modifying asphalt
88 parts of matrix pitches are heated to 100～150 ℃, add 2 portions of viscosity-depression agents after sloughing moisture, reaction 0.5～1h; Add 0.1 part of initiator in pitch, remove the impurity that affects polyreaction in pitch, reaction 10～60min; Add 3 parts of above-mentioned comonomers and 0.1 part of initiator, reaction 10～40min; Drip 6.7 comonomers and 0.1 part of initiator, in 2～4h, add, add follow-up continuous insulation reaction 1.5～4h, obtain described modifying asphalt;
(3) soap lye preparation
2 parts of E4875 type emulsifying agents (Akzo Nobel N.V.), 0.1 part of polyvinyl alcohol, 31.9 parts of water and 1 part of hydrochloric acid are mixed with to soap lye, are heated to 60～70 ℃;
(4) asphalt emulsification
Heat above-mentioned 65 parts of modifying asphalt to 130～150 ℃, above-mentioned soap lye and modifying asphalt are carried out after emulsification production in emulsifying device, be the cold regenerator finished product of emulsified bitumen.
Cold regenerator performance index are in Table 1.
Regenerating mixture performance detects according to grating and the index in < < asphalt highway regeneration techniques standard > >, in Table 2.
Embodiment 3
(1) preparation of comonomer
10 parts of vinylbenzene, 9 parts of vinylformic acid, 35 parts of butyl acrylates, 14 parts of Isooctyl acrylate monomers, 18 parts of lauryl acrylates, mix and form comonomer under 14 parts of (methyl) vinylformic acid stearyl normal temperature;
(2) preparation of modifying asphalt
82 parts of matrix pitches are heated to 100～150 ℃, add 3 portions of viscosity-depression agents after sloughing moisture, reaction 0.5～1h; Add 0.15 part of initiator in pitch, remove the impurity that affects polyreaction in pitch, reaction 10～60min; Add 5 parts of above-mentioned comonomers and 0.15 part of initiator, reaction 10～40min; Drip 9.5 comonomers and 0.2 part of initiator, in 2～4h, add, add follow-up continuous insulation reaction 1.5～4h, obtain described modifying asphalt;
(3) soap lye preparation
2.6 parts of E4875 type emulsifying agents (Akzo Nobel N.V.), 0.5 part of polyvinyl alcohol, 34.9 parts of water and 2 parts of hydrochloric acid are mixed with to soap lye, are heated to 60～70 ℃;
(4) asphalt emulsification
Heat above-mentioned 60 parts of modifying asphalt to 130～150 ℃, above-mentioned soap lye and modifying asphalt are carried out after emulsification production in emulsifying device, be the cold regenerator finished product of emulsified bitumen.
Cold regenerator performance index are in Table 1.
Regenerating mixture performance detects according to grating and the index in < < asphalt highway regeneration techniques standard > >, in Table 2.
Embodiment 4
(1) preparation of comonomer
9 parts of vinylbenzene, 10 parts of methyl acrylates, 35 parts of butyl acrylates, 14 parts of Isooctyl acrylate monomers, 20 parts of lauryl acrylates, mix and form comonomer under 12 parts of (methyl) vinylformic acid stearyl normal temperature;
(2) preparation of modifying asphalt
82 parts of matrix pitches are heated to 100～150 ℃, add 3 portions of viscosity-depression agents after sloughing moisture, reaction 0.5～1h; Add 0.15 part of initiator in pitch, remove the impurity that affects polyreaction in pitch, reaction 10～60min; Add 5 parts of above-mentioned comonomers and 0.15 part of initiator, reaction 10～40min; Drip 9.5 comonomers and 0.2 part of initiator, in 2～4h, add, add follow-up continuous insulation reaction 1.5～4h, obtain described modifying asphalt;
(3) soap lye preparation
2.6 parts of E4875 type emulsifying agents (Akzo Nobel N.V.), 2 parts of polyacrylic acid, 33.4 parts of water and 2 parts of hydrochloric acid are mixed with to soap lye, are heated to 60～70 ℃;
(4) asphalt emulsification
Heat above-mentioned 60 parts of modifying asphalt to 130～150 ℃, above-mentioned soap lye and modifying asphalt are carried out after emulsification production in emulsifying device, be the cold regenerator finished product of emulsified bitumen.
Cold regenerator performance index are in Table 1.
Regenerating mixture performance detects according to grating and the index in < < asphalt highway regeneration techniques standard > >, in Table 2.
Embodiment 5
(1) preparation of comonomer
10 parts of vinylbenzene, 10 parts of methyl acrylates, 10 parts of vinylformic acid, 35 parts of butyl acrylates, 20 parts of lauryl acrylates, mix and form comonomer under 15 parts of (methyl) vinylformic acid stearyl normal temperature.
(2) preparation of modifying asphalt
82 parts of matrix pitches are heated to 100～150 ℃, add 3 portions of viscosity-depression agents after sloughing moisture, reaction 0.5～1h; Add 0.15 part of initiator in pitch, remove the impurity that affects polyreaction in pitch, reaction 10 ~ 60min; Add 5 parts of above-mentioned comonomers and 0.15 part of initiator, reaction 10 ~ 40min; Drip 9.5 comonomers and 0.2 part of initiator, in 2～4h, add, add follow-up continuous insulation reaction 1.5～4h, obtain described modifying asphalt.
(3) soap lye preparation
2.6 parts of E4875 type emulsifying agents (Akzo Nobel N.V.), 0.5 part of polyvinyl alcohol, 34.9 parts of water and 2 parts of hydrochloric acid are mixed with to soap lye, are heated to 60～70 ℃.
(4) asphalt emulsification
Heat above-mentioned 60 parts of modifying asphalt to 130～150 ℃, above-mentioned soap lye and modifying asphalt are carried out after emulsification production in emulsifying device, be the cold regenerator finished product of emulsified bitumen.
Cold regenerator performance index are in Table 1.
Regenerating mixture performance detects according to grating and the index in < < asphalt highway regeneration techniques standard > >, in Table 2.
Embodiment 6
(1) preparation of comonomer
10 parts of vinylbenzene, 10 parts of methyl acrylates, 10 parts of vinylformic acid, 40 parts of butyl acrylates, 15 parts of Isooctyl acrylate monomers, mix and form comonomer under 15 parts of (methyl) vinylformic acid stearyl normal temperature;
(2) preparation of modifying asphalt
82 parts of matrix pitches are heated to 100～150 ℃, add 3 portions of viscosity-depression agents after sloughing moisture, reaction 0.5～1h; Add 0.15 part of initiator in pitch, remove the impurity that affects polyreaction in pitch, reaction 10 ~ 60min; Add 5 parts of above-mentioned comonomers and 0.15 part of initiator, reaction 10～40min; Drip 9.5 comonomers and 0.2 part of initiator, in 2～4h, add, add follow-up continuous insulation reaction 1.5～4h, obtain described modifying asphalt;
(3) soap lye preparation
2.6 parts of E4875 type emulsifying agents (Akzo Nobel N.V.), 0.5 part of calcium chloride, 0.5 part of sodium phosphate, 34.4 parts of water and 2 parts of hydrochloric acid are mixed with to soap lye, are heated to 60～70 ℃.
(4) asphalt emulsification
Heat above-mentioned 60 parts of modifying asphalt to 130～150 ℃, above-mentioned soap lye and modifying asphalt are carried out after emulsification production in emulsifying device, be the cold regenerator finished product of emulsified bitumen.
Cold regenerator performance index are in Table 1.
Regenerating mixture performance detects according to grating and the index in < < asphalt highway regeneration techniques standard > >, in Table 2.
Embodiment 7
(1) preparation of comonomer
10 parts of vinylbenzene, 10 parts of methyl acrylates, 8 parts of vinylformic acid, 38 parts of butyl acrylates, 14 parts of Isooctyl acrylate monomers, mix and form comonomer under 20 parts of lauryl acrylate normal temperature;
(2) preparation of modifying asphalt
82 parts of matrix pitches are heated to 100～150 ℃, add 3 portions of viscosity-depression agents after sloughing moisture, reaction 0.5～1h; Add 0.15 part of initiator in pitch, remove the impurity that affects polyreaction in pitch, reaction 10 ~ 60min; Add 5 parts of above-mentioned comonomers and 0.15 part of initiator, reaction 10 ~ 40min; Drip 9.5 comonomers and 0.2 part of initiator, in 2～4h, add, add follow-up continuous insulation reaction 1.5～4h, obtain described modifying asphalt;
(3) soap lye preparation
2.6 parts of E4875 type emulsifying agents (Akzo Nobel N.V.), 0.5 part of methylcellulose gum, 34.9 parts of water and 2 parts of hydrochloric acid are mixed with to soap lye, are heated to 60～70 ℃;
(4) asphalt emulsification
Heat above-mentioned 60 parts of modifying asphalt to 130～150 ℃, above-mentioned soap lye and modifying asphalt are carried out after emulsification production in emulsifying device, be the cold regenerator finished product of emulsified bitumen.
Cold regenerator performance index are in Table 1.
Regenerating mixture performance detects according to grating and the index in < < asphalt highway regeneration techniques standard > >, in Table 2.
Cold regenerator performance index are in Table 1.
Regenerating mixture performance detects according to grating and the index in < < asphalt highway regeneration techniques standard > >, in Table 2.
The cold regenerator performance index of table 1
Table 2 regenerating mixture performance
As can be seen from Table 1 and Table 2, road of the present invention can meet code requirement completely by the performance index of regenerator, and the index of regenerating mixture also can meet code requirement completely.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (4)
1. the cold regenerator of road, is characterized in that: the component by following weight percent is made:
Emulsifying agent: 2.0～3.0%; Stablizer: 0～1.0%; Water: 30.0～38.0%; Hydrochloric acid: 1.0～4.0%; Surplus is modifying asphalt;
Described emulsifying agent is for splitting slowly slow hardening type cationic emulsifier;
Described stablizer is one or more in calcium chloride, sodium phosphate, polyacrylic acid, polyvinyl alcohol, methylcellulose gum;
The weight percent concentration of described hydrochloric acid is: 36%～37.5%;
Described modifying asphalt is made by the component of following weight percent:
Comonomer: 3.0～25%; Initiator: 0.006%～6%; Viscosity-depression agent: 1.0～4.0%; Surplus is pitch;
Described modifying asphalt is prepared by following step:
(1), by asphalt heating to 100～150 ℃, add viscosity-depression agent after sloughing moisture, reaction 0.5～1h;
(2), add 30% initiator in pitch, eliminate the impurity that affects polyreaction in pitch, reaction 10～60min;
(3), add 10～30% comonomers and 30% initiator, reaction 10～40min;
(4), add remaining comonomer and initiator, reaction 2～4h, the modifying asphalt described in obtaining;
Described comonomer is made by the component of following weight percent: vinylbenzene: 0～10.0%; (methyl) methyl acrylate: 0～10.0%; (methyl) vinylformic acid: 0～10.0%; Butyl acrylate: 20.0～40.0%; Isooctyl acrylate monomer: 0～15.0%; Lauryl acrylate: 0～20.0%; (methyl) vinylformic acid stearyl 0～15.0%;
Described initiator is one or more in dibenzoyl peroxide, dilauroyl peroxide, peroxide tert pivalate ester, di-isopropyl peroxydicarbonate, isopropyl benzene hydroperoxide, Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile);
Described viscosity-depression agent is the polyethylene wax of carbonatoms between 40～80.
2. the cold regenerator of a kind of road according to claim 1, is characterized in that: described viscosity-depression agent is the Sasobit that produces of South Africa Sasol Wax company, one or more in SasoWMX.
3. the cold regenerator of a kind of road according to claim 1, is characterized in that: described pitch is that penetration degree (25 ℃, 5s, 100g) [0.1mm of unit] is 70～110 petroleum pitch.
4. the preparation method of cold regenerator for road described in claim 1, is characterized in that comprising the following steps:
A. asphalt modification
Modifying asphalt is according to following step preparation:
(1), by asphalt heating to 100～150 ℃, add viscosity-depression agent after sloughing moisture, reaction 0.5～1h;
(2), add 30% initiator in pitch, eliminate the impurity that affects polyreaction in pitch, reaction 10～60min;
(3), add 10～30% comonomers and 30% initiator, reaction 10～40min;
(4), add remaining comonomer and initiator, reaction 2～4h, the modifying asphalt described in obtaining;
?b. soap lye preparation
Emulsifying agent, hydrochloric acid and water are mixed with to soap lye by metering, are heated to 60～70 ℃;
C. emulsification: heat modification pitch to 130～150 ℃, above-mentioned soap lye and pitch are carried out, after emulsification production, being emulsified bitumen finished product in emulsifying device.
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| CN104387780A (en) * | 2014-05-23 | 2015-03-04 | 江苏苏博特新材料股份有限公司 | High-permeability emulsion for cold regeneration of waste and old asphalt mixture and preparation method thereof |
| CN106348655B (en) * | 2015-07-17 | 2019-03-15 | 交通运输部公路科学研究所 | A kind of water-based acrylic resin emulsified bitulith Preparation method and use |
| CN104592776A (en) * | 2015-02-04 | 2015-05-06 | 西安公路研究院 | Plant-mixed cold-recycled emulsified asphalt and preparation method thereof |
| CN104788975B (en) * | 2015-04-20 | 2017-07-11 | 武汉理工大学 | A kind of bitumen regenerant with modified function and preparation method thereof |
| CN108558272B (en) * | 2018-05-24 | 2020-10-09 | 浙江绣山园林建设有限公司 | Regenerative road cold-patch material |
| CN110577749A (en) * | 2019-08-26 | 2019-12-17 | 珠海市三悦石油化工有限公司 | Road asphalt and preparation method thereof |
| CN111138685B (en) * | 2019-12-30 | 2022-07-01 | 湖南云中再生科技股份有限公司 | Emulsifier for cold recycling and preparation method thereof |
| CN112252108B (en) * | 2020-10-23 | 2021-04-20 | 邱旸 | Road construction method for in-situ cold recycling of asphalt pavement |
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| CN101831186A (en) * | 2010-04-20 | 2010-09-15 | 上海大学 | Road surface crack sealing and mending tape and preparation and construction process thereof |
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| CN102617968A (en) | 2012-08-01 |
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