CN102363947A - Reductive regeneration system and reductive regeneration process for pavement surface milling material - Google Patents
Reductive regeneration system and reductive regeneration process for pavement surface milling material Download PDFInfo
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- CN102363947A CN102363947A CN2011103594050A CN201110359405A CN102363947A CN 102363947 A CN102363947 A CN 102363947A CN 2011103594050 A CN2011103594050 A CN 2011103594050A CN 201110359405 A CN201110359405 A CN 201110359405A CN 102363947 A CN102363947 A CN 102363947A
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- 238000003801 milling Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title abstract description 11
- 230000008569 process Effects 0.000 title abstract description 6
- 230000002829 reductive effect Effects 0.000 title abstract 4
- 230000008929 regeneration Effects 0.000 title abstract 4
- 238000011069 regeneration method Methods 0.000 title abstract 4
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Abstract
The invention relates to a reductive regeneration system and a reductive regeneration process for a pavement surface milling material. At present, most road milling materials in China are used as stones and used with cement or directly abandoned, and asphalt is wasted, for mainly the processing technology and the processing equipment are not matched with the road milling materials. The system comprises a decomposition and dust removal unit and an asphalt material reduction unit, wherein the decomposition and dust removal unit comprises a feed hopper, a vibratory feeder, a crude stripper, a first conveyor belt, a fine stripper, a second conveyor belt, a classifier, a material-water separator and a plurality of third conveyor belts; the asphalt material reduction unit comprises a mixed hopper, an asphalt material recovery coating vibration reciprocating stirrer and a cold material conveyor belt; and the mixed hopper consists of a plurality of hoppers. The system ensures that the components of asphalt are not changed and the asphalt can be recycled, is considerable in benefit, advanced in process, reasonable in structure, clean in decomposition, uniform in recovery coating, low in investment, good in use performance, multi-purpose, suitable for cold and hot materials and net in suction and discharge, does not leave wastes, and has high production efficiency.
Description
Technical field
The present invention relates to a kind of reducing/regenerating system and reducing/regenerating technology thereof of top course milling material.
Background technology
Along with the improvement of China's economic situation, the high-grade highway mileage constantly increases, and has built into more complete speedway and land-service road network at present; Because 70% speedway is all built later at the beginning of the new century; Got at present and studied for a second time courses one has flunked, overhaul and the overhaul stage, unstable because of the international petroleum market price, it is limited or the like to add domestic highway raw material evaluation and exploration technology level; Cause newly-built and the maintenance cost constantly raises, be worth the transportation industry deep thinking.
In the middle of construction of the highway and maintenance, be applied,, have several technical barriers not break through though obtain certain effect; Add production equipment and do not catch up with, perplexing making full use of of people's road pavement surface layer milling material of repairing the roads always, because of lining as you know: pitch is from import; Building stones all are hundred li parts, and the job site is transported in a thousand li part in some ground, and technical requirement is high; The locality not necessarily has; Can't available substitution material or because of the substitution material expensive, if processing technology does not catch up with, the capstock of high value can not be protected and utilize.
Highway in China milling material major part is served as building stones and cement mixing use at present, and is perhaps directly discarded, wasted pitch, and its main cause is that process technology and equipment can not be joined.
Summary of the invention
The technical problem that the present invention solved provides a kind ofly guarantees that the pitch composition is constant; Recycling; Considerable benefit, its technology is advanced, rational in infrastructure, decomposition is clean, restore parcel is even, operation is little, usability good, the hot and cold material of a tractor serves several purposes all can, not stay the top course milling material surplus, that production efficiency is high that gives up reducing/regenerating system and reducing/regenerating technology thereof.
For solving above-mentioned technical problem, the technical scheme that the present invention takes:
A kind of reducing/regenerating system of top course milling material; Its special character is: comprise and decompose dust removing units, drop material reduction unit; Decompose dust removing units and comprise feed hopper, oscillating feeder, thick stripping machine, first conveyer belt, thin stripping machine, second conveyer belt, classifier, material separator, several the 3rd conveyer belts that connect successively; The lower end of material separator is provided with sedimentation basin, is provided with high-pressure water jet in the thick stripping machine, in the thin stripping machine high-pressure water jet is set; Classifier is provided with water under high pressure spray device, and each distribution box outlet of classifier is provided with the 3rd conveyer belt; Described drop material reduction unit comprises that mixed-hopper, the recovery of drop material wrap the reciprocal agitator of vibration, cold burden conveyer belt; Mixed-hopper is made up of several hoppers; The lower end of mixed-hopper is provided with the Electronic Control conveyer; One end of Electronic Control conveyer restores the feeding mouth that wraps the reciprocal agitator of vibration with the drop material and is connected; The drop material restores the discharging opening that wraps the reciprocal agitator of vibration and is divided into hot spice outlet and the outlet of cold mixing material, and the outlet of cold mixing material is connected with forced air cooler, and forced air cooler is connected with cold mixing material conveyer belt; Several the 3rd conveyer belts that decompose dust removing units are connected with several hoppers of the mixed-hopper of drop material reduction unit respectively.
Above-mentioned drop material recovery wraps the reciprocal agitator of vibration and comprises agitated reactor, conduction oil petrol filling station, vibrator; The both sides of agitated reactor 12 are respectively arranged with automatic insulated door; One side of agitated reactor is provided with and has cold mixing material discharging opening, hot spice discharging opening, goes out to be provided with cold and hot spice separating plate in the feed bin, and the conduction oil petrol filling station is connected with the heat-conducting oil pipes that is arranged on the agitated reactor inwall; Vibrator is set in the agitated reactor, and the bottom of agitated reactor is provided with damping device.
The first above-mentioned conveyer belt is provided with deironing apparatus.
Above-mentioned drop material restores the agitated reactor that wraps the reciprocal agitator of vibration and is connected with breeze jar, asphalt tank.
The bottom that above-mentioned drop material restores the agitated reactor that wraps the reciprocal agitator of vibration is provided with the mobile pallet that has mobile wheel.
A kind of reducing/regenerating technology of top course milling material is characterized in that: realize through following steps:
(1), decomposes dedusting: at first adopt automobile that the milling material is imported feed hopper; Through the vibrations feeder milling material is transported to thick stripping machine; High-pressure water jet on the thick stripping machine is sprayed to the milling material and is slightly peeled off; Spray and carefully peel off outputing to thin stripping machine through first conveyer belt, be transported to classifier through the milling material of peeling off processing through second conveyer belt, through the water under high pressure spray device flushing of classifier; And carry out the classification of all size material; The material separator that the milling material part of the sorted 0-4.75 ㎜ of classifier is dropped to the bottom filters decomposition, and dust and earth and other impurity are entered in the sedimentation basin, and the above milling material of 4.75mm is transported to the milling material respectively through the 3rd conveyer belt in the hopper of different size of mixed-hopper of drop material reduction unit;
(2) reduction is wrapped up in multiple: the milling material in the hopper of the different size of mixed-hopper; Provide and deliver in the agitated reactor according to proportioning through the Electronic Control conveyer; Wrap in advance through rotation or vibrations recovery formation building stones pitch through heat transfer type, will wrap building stones in advance and send into out feed bin, close hot spice outlet through adjusting cold and hot spice separating plate; After the forced air cooler cooling of cold mixing material outlet, be used to produce cold reworked material through what the output of cold mixing material conveyer belt made;
Milling material in the hopper of the different size of mixed-hopper is provided and delivered in the agitated reactor the new pitch that in agitated reactor, adds through asphalt tank according to proportioning through the Electronic Control conveyer; Spray in the agitated reactor; Shake stirring and then form hot spice by match ratio, temperature is controlled at 160 ℃-190 ℃, will wrap building stones in advance and send into out feed bin; Close the outlet of cold mixing material through adjusting cold and hot spice separating plate, the material that directly is used for paving concrete pavement that makes is through hot spice outlet output.
Compared with prior art, beneficial effect of the present invention:
The present invention has remedied the equipment that utilizes fully again and the technology blank of domestic and international waste and old milling material; Broken and in the milling material, mixed the convention that cement only is used in surface layer under the speedway in the past; Make Imported Asphalt and high-grade building stones really obtain to such an extent that answer the effect of utilizing, energy conservation reduces environment pollution; Crack the accumulation land occupation, stop to pollute because of waste material causes water; The present invention guarantees that the pitch composition is constant, recycling, considerable benefit, its technology is advanced, rational in infrastructure, it is clean to decompose, restore parcel evenly, operations is little, usability good, the hot and cold material of a tractor serves several purposes all can, eat up take clean, do not stay useless surplus, the production efficiency height.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 wraps the reciprocal agitator structure sketch map of vibration for drop material of the present invention restores;
Fig. 3 is the side cutaway view of Fig. 2;
Fig. 4 is the structural representation of mixed-hopper.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is elaborated.
Referring to Fig. 1-4; The present invention includes and decompose dust removing units, drop material reduction unit; Decompose dust removing units and comprise the feed hopper 1 that connects successively, oscillating feeder 2, thick stripping machine 3, first conveyer belt 4, thin stripping machine 5, second conveyer belt 6, classifier 7, material separator 8, several the 3rd conveyer belts 10, the lower end of material separator 8 is provided with sedimentation basin 9, is provided with high-pressure water jet in the thick stripping machine 3; In the thin stripping machine 5 high-pressure water jet is set; Classifier 7 is provided with water under high pressure spray device, and the milling material that classifier 7 will decompose after the dedusting is divided into some kinds according to size, and each distribution box outlet of classifier 7 is provided with the 3rd conveyer belt 10; Described drop material reduction unit comprises that mixed-hopper 11, drop material restore and wraps the reciprocal agitator of vibration 28, cold burden conveyer belt 17; Mixed-hopper is made up of several hoppers; The lower end of mixed-hopper 11 is provided with Electronic Control conveyer 23 like Fig. 4; One end of Electronic Control conveyer 23 restores the feeding mouth that wraps the reciprocal agitator 28 of vibration with the drop material and is connected; The drop material restores the discharging opening wrap the reciprocal agitator 28 of vibration and is divided into hot spice outlet 26 and cold mixing material outlet 27, and cold mixing material outlet 27 is connected with forced air cooler 16, and forced air cooler 16 is connected with cold mixing material conveyer belt 17; Several the 3rd conveyer belts 10 that decompose dust removing units are connected with several hoppers of the mixed-hopper 11 of drop material reduction unit respectively.
Referring to Fig. 2,3; The recovery of drop material wraps the reciprocal agitator 28 of vibration and comprises agitated reactor 12, conduction oil petrol filling station 15, vibrator 19; The both sides of agitated reactor 12 are respectively arranged with automatic insulated door 22; One side of agitated reactor 12 be provided with have cold mixing material discharging opening 27, a hot spice discharging opening 26 go out feed bin 24, go out to be provided with cold and hot spice separating plate 25 in the feed bin 24, conduction oil petrol filling station 15 is connected with the heat-conducting oil pipes 18 that is arranged on agitated reactor 12 inwalls; Vibrator 19 is set in the agitated reactor 12, and the bottom of agitated reactor 12 is provided with damping device.
Thick stripping machine 3 is mainly smashed the milling material and is used the milling material tentatively to decompose, and in thick stripping machine, the apparatus that sprays water with high pressure is installed simultaneously, and temperature also makes the milling material obtain the compound that water logging obtains pitch and large and small building stones in the cabin thereby reduce,
Thin stripping machine 5 main compound is segmented through high-pressure water jet make the water logging of compound more abundant; Run up through machine; Compound is high velocity impact in cabin, two water logging processes in addition, and the slit is increasing between pitch and the building stones; It is more and more thinner that the milling material decomposes, thereby obtain the decomposition fines and material aqueous mixtures of milling material.
It is not only to reduce the cabin temperature and can the contaminant removals such as earth in the milling material also can be carried out thin decomposition with pitch and building stones through the penetration of water through water logging that thick stripping machine 3, thin stripping machine 5 are provided with high-pressure water jet, reaches the purpose with pitch the milling material and building stones decomposition from face.
Classifier 7 is provided with high-pressure water jet, utilizes water to prevent dust pollution, mainly is to reduce to add temperature, dedusting in the multiplexer, quickens cracking of waste and old material, promotes the crack to immerse and adds the principle of carving, and guarantees to decompose moulding, reduces and destroys.
The first above-mentioned conveyer belt 4 is provided with deironing apparatus, is used for removing the metal sundries such as iron nail of milling material.
Above-mentioned deironing apparatus can adopt electromagnet or magnet drum.
Above-mentioned drop material restores the agitated reactor 12 that wraps the reciprocal agitator 28 of vibration and is connected with breeze jar 13, asphalt tank 14.
The bottom that above-mentioned drop material restores the agitated reactor 12 that wraps the reciprocal agitator 28 of vibration is provided with the mobile pallet 20 that has mobile wheel 21.
The present invention realizes through following steps:
(1), decomposes dedusting: at first adopt automobile that the milling material is imported feed hopper 1; Through vibrations feeder 2 the milling material is transported to thick stripping machine 3; High-pressure water jet on the thick stripping machine 3 is sprayed to the milling material and is slightly peeled off; Spray and carefully peel off outputing to thin stripping machine 5 through first conveyer belt 4, be transported to classifier 7 through the milling material of peeling off processing through second conveyer belt 6, through the water under high pressure spray device flushing of classifier 7; And carry out the classification of all size material; The material separator 8 that the milling material part of classifier 7 sorted 0-4.75 ㎜ is dropped to the bottom filters decomposition, and dust and earth and other impurity are entered in the sedimentation basin 9, and the above milling material of 4.75mm is transported to the milling material respectively through the 3rd conveyer belt 10 in the hopper of different size of mixed-hopper 11 of drop material reduction unit;
(2) reduction is wrapped up in multiple: the milling material in the hopper of the different size of mixed-hopper 11; Provide and deliver in the agitated reactor 12 according to proportioning through Electronic Control conveyer 23; Wrap in advance through rotation or vibrations recovery formation building stones pitch through heat transfer type, will wrap building stones in advance and send into out feed bin, close hot spice outlet through adjusting cold and hot spice separating plate; After forced air cooler 16 coolings of cold mixing material outlet, be used to produce cold reworked material through what 17 outputs of cold mixing material conveyer belt made;
Milling material in the hopper of the different size of mixed-hopper 11; Provide and deliver in the agitated reactor 12 according to proportioning through Electronic Control conveyer 23; The new pitch that in agitated reactor 12, adds through asphalt tank 14 sprays in the agitated reactor 12, shakes by match ratio and stirs and then form hot spice; Temperature is controlled at 160 ℃-190 ℃; To wrap building stones in advance and send into out feed bin, and close the outlet of cold mixing material through adjusting cold and hot spice separating plate, the material that directly is used for paving concrete pavement that makes is through hot spice outlet output.
Xi'an highway academy highway engineering test inspection center utilizes the flexible pavement milling material of reducing/regenerating of the present invention to carry out the match ratio design of little table place.According to table 6.5.5 MS-3 type grating intermediate value among " asphalt highway construction technique normalizing " (JTG F40-2004), mixing time, the loading wheel through micro-surfacing emulsified bitumen rolls and the wheel wear hardness that wet is checked the optimum emulsification asphalt content of having confirmed micro-surfacing emulsified bitumen.
One, micro-surfacing emulsified bitumen match ratio design considerations
1, " highway engineering pitch and bituminous mixture testing regulation " JTJ052-2000
2, " highway engineering gather materials testing regulation " JTG E42-2005
3, " asphalt highway construction technique normalizing " JTG F40-2004
Two, technical requirements
Table 1 is seen in the technical requirements of mulseal MS-3 micro-surfacing mixture.
Mulseal MS-3 micro-surfacing mixture technical standard table 1
Three, ground surface material
1, modified emulsifying asphalt: client provides.Assay is seen table 2
Modified emulsifying asphalt testing result table 2
2, mineral aggregate: client provides the flexible pavement 0-2.36 mm that waste and old material processes, 0-4.75 mm, 2.36-9.5mm, contains 3 ~ 5% residual asphalts in this mineral aggregate.
Four, mulseal MS-3 micro-surfacing mixture match ratio design laboratory test
1, mineral aggregate gradation is formed
Various mineral aggregates are opened by shelves screenings, mixed according to MS-3 type grating intermediate value among the table 6.5.5 among " asphalt highway construction technique normalizing " (JTG F40-2004) then and carry out follow-up test after joining.Grating is seen table 3.
Mineral aggregate gradation table 3
2, mulseal MS-3 micro-surfacing mixture match ratio design
(1) but mixing time test
Can mix and stir test is to confirm that slurry mixture has the sufficient mixing time, paves so that in construction, carry out controllability according to test result, avoids de-emulsification speed too fast, and satisfying the mixing time is 8% greater than the outer amount of water of the 120s of code requirement.Test conditions is: 25 ℃ of temperature, humidity 40%.Result of the test is seen table 4.
But mixing time test card 4
(2) wet wheel abrasion test (WTAT) ISSA T100
The abrasion resisting ability test specimen soaks 1h in 25 ℃ of water after is measured in the wet wheel abrasion test (WTAT) of compound.Abrasion mass loss threshold limit value is 540g/m
2The minimum amount of pitch is confirmed in the abrasion test of wet wheel, guarantees needed bitumen aggregate ratio, and result of the test such as table 5 are listed.
The wet wheel of compound abrasion value table 5
(3) load wheel scab test (LWT) ISSA TB109
" little table place and Slurry Seal Technology guide " requires to adhere to the sand amount and is not more than 450 (g/m
2).This project load wheel result of the test is seen table 6.
Compound load wheel adheres to sand scale 6
3, bitumen aggregate ratio is confirmed
This tests used Asphalt Emulsion Evaporation Residue content is 54.7%, and the used oilstone score of test mixture is not 3.556%, 4.103%, 4.650%.According to result of the test, compound whole satisfy code requirement during bitumen aggregate ratio 4.103%.Final definite bitumen aggregate ratio is 4.1%.In the construction, the mulseal consumption should convert according to actual evaporated residue content in the engineering.
Five, conclusion
1, the mineral aggregate gradation at little table place is a table 6.5.5 MS-3 type grating intermediate value among " asphalt highway construction technique normalizing " (JTG F40-2004), and the mulseal optimum amount is 7.5%;
2, compare with the little table place match ratio that adopts new mineral aggregate, utilize the mulseal consumption of little table place match ratio of waste and old material can reduce 2% ~ 4%;
3, utilize the pavement performance at little table place of waste and old material preparation to satisfy " asphalt highway construction technique normalizing " (JTG F40-2004) requirement fully.
Claims (6)
1. the reducing/regenerating system of a top course milling material; It is characterized in that: comprise and decompose dust removing units, drop material reduction unit; Decompose dust removing units and comprise feed hopper (1), oscillating feeder (2), thick stripping machine (3), first conveyer belt (4), thin stripping machine (5), second conveyer belt (6), classifier (7), material separator (8), several the 3rd conveyer belts (10) that connect successively; The lower end of material separator (8) is provided with sedimentation basin (9); Be provided with high-pressure water jet in the thick stripping machine (3); In the thin stripping machine (5) high-pressure water jet is set, classifier (7) is provided with water under high pressure spray device, and each distribution box outlet of classifier (7) is provided with the 3rd conveyer belt (10); Described drop material reduction unit comprises that mixed-hopper (11), the recovery of drop material wrap vibration reciprocal agitator (28), cold burden conveyer belt (17); Mixed-hopper is made up of several hoppers; The lower end of mixed-hopper (11) is provided with Electronic Control conveyer (23); One end of Electronic Control conveyer (23) restores the feeding mouth that wraps the reciprocal agitator of vibration (28) with the drop material and is connected; The drop material restores the discharging opening that wraps the reciprocal agitator of vibration (28) and is divided into hot spice outlet (26) and cold mixing material outlet (27), and cold mixing material outlet (27) is connected with forced air cooler (16), and forced air cooler (16) is connected with cold mixing material conveyer belt (17); Several the 3rd conveyer belts (10) that decompose dust removing units are connected with several hoppers of the mixed-hopper (11) of drop material reduction unit respectively.
2. the reducing/regenerating system of a kind of top course milling material according to claim 1; It is characterized in that: described drop material recovery wraps the reciprocal agitator of vibration (28) and comprises agitated reactor (12), conduction oil petrol filling station (15), vibrator (19); The both sides of agitated reactor (12) are respectively arranged with automatic insulated door (22); One side of agitated reactor (12) is provided with and has cold mixing material discharging opening (27), hot spice discharging opening (26); Go out and be provided with cold and hot spice separating plate (25) in the feed bin (24); Conduction oil petrol filling station (15) is connected with the heat-conducting oil pipes (18) that is arranged on agitated reactor (12) inwall, and vibrator (19) is set in the agitated reactor (12), and the bottom of agitated reactor (12) is provided with damping device.
3. the reducing/regenerating system of a kind of top course milling material according to claim 1 and 2 is characterized in that: described first conveyer belt (4) is provided with deironing apparatus.
4. the reducing/regenerating system of a kind of top course milling material according to claim 3 is characterized in that: described drop material restores the agitated reactor (12) that wraps the reciprocal agitator of vibration (28) and is connected with breeze jar (13), asphalt tank (14).
5. the reducing/regenerating system of a kind of top course milling material according to claim 4 is characterized in that: the bottom that described drop material restores the agitated reactor (12) that wraps the reciprocal agitator of vibration (28) is provided with the mobile pallet (20) that has mobile wheel (21).
6. the reducing/regenerating technology of a top course milling material is characterized in that: realize through following steps:
(1), decomposes dedusting: at first adopt automobile that the milling material is imported feed hopper (1); Through vibrations feeders (2) the milling material is transported to thick stripping machine (3); High-pressure water jet on the thick stripping machine (3) is sprayed to the milling material and is slightly peeled off; Spray and carefully peel off outputing to thin stripping machine (5) through first conveyer belt (4); Milling material through peeling off processing is transported to classifier (7) through second conveyer belt (6); Water under high pressure spray device flushing through classifier (7), and carry out the classification of all size material, the material separator (8) that the milling material part of the sorted 0-4.75 ㎜ of classifier (7) is dropped to the bottom filters decomposition; Dust and earth and other impurity are entered in the sedimentation basin (9), and the above milling material of 4.75mm is transported to the milling material respectively through the 3rd conveyer belt (10) in the hopper of different size of mixed-hopper (11) of drop material reduction unit;
(2), reduction is wrapped up in multiple: the milling material in the hopper of the different size of mixed-hopper (11); Provide and deliver in the agitated reactor (12) according to proportioning through Electronic Control conveyer (23); Wrap in advance through rotation or vibrations recovery formation building stones pitch through heat transfer type; To wrap building stones in advance and send into out feed bin; Close the outlet of hot spice through adjusting cold and hot spice separating plate, after forced air cooler (16) cooling of cold mixing material outlet, be used to produce cold reworked material through what cold mixing material conveyer belt (17) output made;
Milling material in the hopper of the different size of mixed-hopper (11); Provide and deliver in the agitated reactor (12) according to proportioning through Electronic Control conveyer (23); The new pitch that in agitated reactor (12), adds through asphalt tank (14) sprays in the agitated reactor (12), shakes by match ratio and stirs and then form hot spice; Temperature is controlled at 160 ℃-190 ℃; To wrap building stones in advance and send into out feed bin, and close the outlet of cold mixing material through adjusting cold and hot spice separating plate, the material that directly is used for paving concrete pavement that makes is through hot spice outlet output.
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| CN 201110359405 CN102363947B (en) | 2011-11-14 | 2011-11-14 | Reductive regeneration system and reductive regeneration process for pavement surface milling material |
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| CN 201110359405 CN102363947B (en) | 2011-11-14 | 2011-11-14 | Reductive regeneration system and reductive regeneration process for pavement surface milling material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107313325A (en) * | 2017-08-23 | 2017-11-03 | 西安长大公路养护技术有限公司 | Asphalt granulating machine and preparation method thereof |
| CN110512504A (en) * | 2019-09-12 | 2019-11-29 | 济南通达公路工程有限公司 | Waste asphalt pavement material separates regeneration treatment system and its processing technology |
| CN110983935A (en) * | 2019-11-22 | 2020-04-10 | 胡拴紧 | Integrative device of regeneration construction is rejected to old and useless pitch of highway |
| CN111576143A (en) * | 2020-05-19 | 2020-08-25 | 知行良知实业股份有限公司 | Preparation system and preparation method of drainage fully-regenerated material |
| CN112095400A (en) * | 2020-06-19 | 2020-12-18 | 南阳市亚龙筑路机械制造有限公司 | Waste asphalt mixture asphalt stripping system |
| CN112275062A (en) * | 2020-10-28 | 2021-01-29 | 山东省大通公路工程有限责任公司 | Milling machine dust fall equipment of old road disease restoration construction usefulness |
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| CN110983935A (en) * | 2019-11-22 | 2020-04-10 | 胡拴紧 | Integrative device of regeneration construction is rejected to old and useless pitch of highway |
| CN110983935B (en) * | 2019-11-22 | 2021-07-09 | 胡拴紧 | Integrative device of regeneration construction is rejected to old and useless pitch of highway |
| CN111576143A (en) * | 2020-05-19 | 2020-08-25 | 知行良知实业股份有限公司 | Preparation system and preparation method of drainage fully-regenerated material |
| CN112095400A (en) * | 2020-06-19 | 2020-12-18 | 南阳市亚龙筑路机械制造有限公司 | Waste asphalt mixture asphalt stripping system |
| CN112275062A (en) * | 2020-10-28 | 2021-01-29 | 山东省大通公路工程有限责任公司 | Milling machine dust fall equipment of old road disease restoration construction usefulness |
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