CN115323881A - Method for repairing sinking of periphery of pavement well cover by cold-mixed epoxy asphalt mixture - Google Patents
Method for repairing sinking of periphery of pavement well cover by cold-mixed epoxy asphalt mixture Download PDFInfo
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- CN115323881A CN115323881A CN202210856562.0A CN202210856562A CN115323881A CN 115323881 A CN115323881 A CN 115323881A CN 202210856562 A CN202210856562 A CN 202210856562A CN 115323881 A CN115323881 A CN 115323881A
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- cold
- mixture
- epoxy asphalt
- asphalt mixture
- mixed
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- 239000010426 asphalt Substances 0.000 title claims abstract description 78
- 239000000203 mixture Substances 0.000 title claims abstract description 61
- 239000004593 Epoxy Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000003085 diluting agent Substances 0.000 claims abstract description 9
- 239000004952 Polyamide Substances 0.000 claims abstract description 8
- 239000003822 epoxy resin Substances 0.000 claims abstract description 8
- 229920002647 polyamide Polymers 0.000 claims abstract description 8
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
- 238000003801 milling Methods 0.000 claims abstract description 5
- 239000011707 mineral Substances 0.000 claims abstract description 5
- 239000002904 solvent Substances 0.000 claims abstract description 5
- 238000007865 diluting Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000032683 aging Effects 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000004575 stone Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 3
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical group CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- 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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0966—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
- E01C23/0973—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants
- E01C23/098—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants and working the surface of the filling or applying particulate material thereto, e.g. smoothing, gritting
-
- 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
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1068—Supplying or proportioning the ingredients
- E01C19/1077—Supplying or proportioning the ingredients the liquid ingredients
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a method for repairing sinking of the periphery of a pavement well cover by using a cold-mixed epoxy asphalt mixture, which comprises the following steps: uniformly stirring the epoxy resin diluent and the E51 to form a component A; diluting the modified asphalt, mixing 650 low-molecular-weight polyamide with the diluted asphalt, stirring, and adding a solubilizer to form a component B; and uniformly mixing the prepared component A with the mineral aggregate with reasonable gradation to obtain a component A mixed material. The method for repairing the sinking of the periphery of the well lid of the pavement by using the cold-mixed epoxy asphalt mixture has the advantages that the cold-mixed epoxy asphalt mixture is obtained by manufacturing the epoxy asphalt which can be cured at normal temperature and uniformly mixing the epoxy asphalt with reasonably graded broken stones, and has the characteristics of excellent Marshall stability, high-temperature dynamic stability, water damage resistance, corrosion resistance, fatigue resistance, aging resistance and low-temperature fracture resistance, and meanwhile, the cold-mixed epoxy asphalt mixture is integrally used in a milling pit groove, so that the mixture has high binding power with the well wall and an old pavement material layer, and the durability is high.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to a method for repairing peripheral subsidence of a pavement well cover by using a cold-mixed epoxy asphalt mixture.
Background
In urban roads, the phenomena of sinking of a sewer well cover or sinking of the road surface around the well are more and more serious, one or more cracks are generated on the paved asphalt pavement at positions with unequal distances around the edge of the well cover after a lot of roads which are just delivered for use are completed and put into service for a period of time, the width and the number of the cracks are gradually widened and increased along with the lapse of time, the city appearance image of the city is seriously damaged, and a lot of inconvenience is brought to the traveling of people. The problems are caused by the instability of the well lid, when the instability of the well lid continues to increase, the damage degree of the road surface around the well lid is increased, and the well lid and the road surface around the well lid obviously sink.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a method for repairing the peripheral subsidence of a pavement well cover by using a cold-mixed epoxy asphalt mixture, which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a method for repairing sinking of the periphery of a pavement well cover by using a cold-mixed epoxy asphalt mixture comprises the following steps:
(1) At normal temperature, uniformly stirring the epoxy resin diluent and the E51 according to the mass ratio of 1;
(2) Diluting the modified asphalt and an asphalt diluent according to the mass ratio of 2:1 at 100 ℃, mixing 650 low-molecular-weight polyamide and the diluted asphalt and stirring to obtain a mixture, adding a solubilizer which accounts for 0.5-1% of the mass of the mixture to form a component B, wherein the mass ratio of the 650 low-molecular-weight polyamide to the modified asphalt is 1:1;
(3) Uniformly mixing the prepared component A with mineral aggregate with reasonable gradation to obtain a component A mixed material, wherein the using amount of the component A is controlled to be 5.8-6 wt%;
(4) Milling 1m outwards along the outer edge of the well lid, wherein the depth is 10cm, the bottom of a milled pit groove is flat, and rough and uneven interfaces are chiseled on the four walls of the pit groove;
(5) After the pit is cleaned, coating the interfacial agent on the four walls and the surface of the base layer of the pit, adding the uniformly mixed A component mixture into the B component according to 2.7-3 wt%, manually stirring for 4-5 times until the mixture is uniformly mixed to obtain a cold-mixed epoxy asphalt mixture, and filling the cold-mixed epoxy asphalt mixture into the pit until the cold-mixed epoxy asphalt mixture is higher than the road surface.
Further, the mixture of the component A is uniformly mixed and then is bagged according to the weight of 25kg for standby.
Furthermore, the height of the cold-mixed epoxy asphalt mixture above the pavement is 1.5cm.
Furthermore, the center of the filled pit groove is higher than the surrounding road surface and is arc-shaped.
Further, when the cold-mixed epoxy asphalt mixture is filled into the pit slot, the cold-mixed epoxy asphalt mixture is filled layer by layer and compacted layer by layer, and the height of each layer is 3-5cm.
The invention has the beneficial effects that: the method for repairing the sinking of the periphery of the well lid of the pavement by using the cold-mixed epoxy asphalt mixture has the advantages that the cold-mixed epoxy asphalt mixture is obtained by manufacturing the epoxy asphalt which can be cured at normal temperature and uniformly mixing the epoxy asphalt with reasonably graded broken stones, and has the characteristics of excellent Marshall stability, high-temperature dynamic stability, water damage resistance, corrosion resistance, fatigue resistance, aging resistance and low-temperature fracture resistance, and meanwhile, the cold-mixed epoxy asphalt mixture is integrally used in a milling pit slot, so that the mixture, the well wall and the old pavement material layer have high binding power and high durability;
the cold-mixed epoxy asphalt mixture adopted by the invention is a novel asphalt pavement material, and does not need to heat, pave and roll the mineral aggregate at high temperature like a hot-mixed asphalt mixture, so that the cold-mixed epoxy asphalt mixture has the outstanding advantages of energy conservation, convenient storage and transportation, convenient construction, prolonged construction season, capability of utilizing the existing equipment to carry out production and construction, and the like, has wide applicable environmental temperature range and can be used at the temperature of-20 to 40 ℃; the asphalt pavement repairing agent is suitable for asphalt pavements constructed by medium-acidity, coarse and fine aggregates, is suitable for repairing asphalt pavements of various grades, can be suitable for areas with heavy rain and moisture and easily damaged asphalt pavements in all weather, and provides a new way with high efficiency, economy and environmental protection for improving the performance of asphalt mixtures of various road construction and maintenance units.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The cold-mix epoxy asphalt is prepared from base asphalt, epoxy resin, a curing agent, an asphalt diluent, a compatibilizer and the like according to a certain proportion. Selecting 70# petroleum asphalt with more asphaltenes and resins as matrix asphalt, heating a certain amount of 70# asphalt to a desired temperature under a heating condition, continuously stirring uniformly, then adding N, N-Ethylene Bis Stearamide (EBS) dispersant according to 3% -5% of the mass ratio of the 70# asphalt, and after the operation is finished, shearing and blending at a constant rotating speed for 1h to finish the modified preparation of the 70# asphalt; selecting E51 from the general epoxy resin as the epoxy resin; the curing agent is 650 low molecular weight polyamide which can be cured at normal temperature; the asphalt diluent is selected from dioctyl phthalate (DOP) from the aspects of plasticity increasing property, volatility, economy and easy procurement; and (3) selecting a solubilizer containing epoxy groups and long carbon chains. The cold-mixed epoxy asphalt is divided into two components, epoxy resin and the like are used as A components, and curing agent and the like are used as B components. And at normal temperature, uniformly mixing the component A and the component B according to the mass ratio of 2:1 to obtain the epoxy asphalt capable of being rapidly cured at normal temperature.
Example 1
A method for repairing sinking of the periphery of a pavement well cover by using a cold-mixed epoxy asphalt mixture comprises the following steps:
(1) At normal temperature, uniformly stirring the epoxy resin diluent and the E51 according to the mass ratio of 1;
(2) Diluting the modified asphalt and an asphalt diluent according to the mass ratio of 2:1 at 100 ℃ of an oil bath pan, stirring for 5min, mixing 650 low-molecular polyamide and the diluted asphalt and stirring to obtain a mixture, and finally adding a solubilizer according to 0.5-1% of the mass of the mixture to form a component B, wherein the mass ratio of 650 low-molecular polyamide to the modified asphalt is 1:1, and the stirring time is 5min;
(3) Uniformly mixing the prepared component A with mineral aggregate with reasonable gradation to obtain a component A mixed material, wherein the using amount of the component A is controlled to be 5.8-6 wt%, and the component A mixed material is uniformly mixed and bagged according to the weight of 25kg for later use;
(4) Milling 1m outwards along the outer edge of the well lid, wherein the depth is 10cm, the bottom of a milled pit groove is flat, and rough and uneven interfaces are chiseled on the four walls of the pit groove so as to be beneficial to better bonding of new and old mixed materials;
(5) After the pit is cleaned, coating the interfacial agent on the four walls of the pit and the surface of the base layer, wherein no water is accumulated in the pit, bagging the uniformly mixed A-component mixture, adding the B component according to 2.7-3 wt%, manually stirring for 4-5 times until the mixture is uniformly mixed without phenomena of whitening, segregation and the like to obtain a cold-mixed epoxy asphalt mixture, filling the cold-mixed epoxy asphalt mixture into the pit until the cold-mixed epoxy asphalt mixture is about 1.5cm higher than the road surface, and filling the center of the pit to be higher than the surrounding road surface and to be in an arc shape after the cold-mixed epoxy asphalt mixture is filled.
When the cold-mixed epoxy asphalt mixture is filled into the pit slot, the cold-mixed epoxy asphalt mixture is filled in layers and compacted layer by layer, and the height of each layer is 3-5cm. After the pavement is uniformly paved, a proper compacting tool and a proper compacting method are selected for compacting according to the field environment, the size and the depth of the repair area, and the periphery and the corners of the repair area are ensured to be fully compacted when the high-grade pavement and the pavement with large traffic flow are repaired.
In conclusion, by means of the technical scheme, the cold-mixed epoxy asphalt mixture is obtained by manufacturing the epoxy asphalt capable of being cured at normal temperature and uniformly mixing the epoxy asphalt with the reasonably graded crushed stone, and has the characteristics of excellent Marshall stability, high-temperature dynamic stability, water damage resistance, corrosion resistance, fatigue resistance, aging resistance and low-temperature fracture resistance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A method for repairing peripheral subsidence of a well cover of a pavement by using a cold-mixed epoxy asphalt mixture is characterized by comprising the following steps:
(1) At normal temperature, uniformly stirring the epoxy resin diluent and the E51 according to the mass ratio of 1;
(2) Diluting the modified asphalt and an asphalt diluent according to the mass ratio of 2:1 at 100 ℃, mixing 650 low-molecular-weight polyamide and the diluted asphalt and stirring to obtain a mixture, adding a solubilizer which accounts for 0.5-1% of the mass of the mixture to form a component B, wherein the mass ratio of the 650 low-molecular-weight polyamide to the modified asphalt is 1:1;
(3) Uniformly mixing the prepared component A with mineral aggregate with reasonable gradation to obtain a component A mixture, wherein the using amount of the component A is controlled to be 5.8-6 wt%;
(4) Milling 1m outwards along the outer edge of the well cover, wherein the depth is 10cm, the bottom of a milled pit slot is flat, and rough and uneven interfaces are chiseled on the four walls of the pit slot;
(5) After the pit is cleaned, coating the interfacial agent on the four walls and the surface of the base layer of the pit, adding the uniformly mixed A component mixture into the B component according to 2.7-3 wt%, manually stirring for 4-5 times until the mixture is uniformly mixed to obtain a cold-mixed epoxy asphalt mixture, and filling the cold-mixed epoxy asphalt mixture into the pit until the cold-mixed epoxy asphalt mixture is higher than the road surface.
2. The method for repairing the peripheral subsidence of the well lid of the pavement by using the cold-mix epoxy asphalt mixture according to claim 1, wherein the mixture of the component A is uniformly mixed and then is bagged according to the weight of 25kg per bag for later use.
3. The method for repairing the peripheral subsidence of the well lid on the pavement by using the cold-mixed epoxy asphalt mixture according to claim 1, wherein the height of the cold-mixed epoxy asphalt mixture above the pavement is 1.5cm.
4. The method for repairing the peripheral subsidence of the well lid of the pavement by using the cold-mix epoxy asphalt mixture according to claim 1, wherein the center of the filled pit groove is higher than the peripheral pavement and is arc-shaped.
5. The method for repairing the peripheral subsidence of the well lid of the pavement by using the cold-mixed epoxy asphalt mixture according to claim 1, wherein when the cold-mixed epoxy asphalt mixture is filled into the pit slot, the cold-mixed epoxy asphalt mixture is filled in layers and compacted layer by layer, and the height of each layer is 3-5cm.
Priority Applications (1)
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CN202210856562.0A CN115323881A (en) | 2022-07-21 | 2022-07-21 | Method for repairing sinking of periphery of pavement well cover by cold-mixed epoxy asphalt mixture |
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CN202210856562.0A CN115323881A (en) | 2022-07-21 | 2022-07-21 | Method for repairing sinking of periphery of pavement well cover by cold-mixed epoxy asphalt mixture |
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CN202210856562.0A Pending CN115323881A (en) | 2022-07-21 | 2022-07-21 | Method for repairing sinking of periphery of pavement well cover by cold-mixed epoxy asphalt mixture |
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Citations (7)
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CN103043962A (en) * | 2011-10-17 | 2013-04-17 | 中国石油化工股份有限公司 | Mixture for normal-temperature repairing of asphalt pavement pits, and preparation method and application thereof |
CN103225249A (en) * | 2013-04-11 | 2013-07-31 | 同济大学 | Method for repairing small pits on epoxy asphalt steel bridge surface in infusion manner |
CN103360908A (en) * | 2013-07-22 | 2013-10-23 | 天长市银狐漆业有限公司 | Epoxy coal tar pitch paint |
CN104031396A (en) * | 2013-11-20 | 2014-09-10 | 湖北大学 | Cold mixing epoxy asphalt material and preparation method thereof |
CN104031394A (en) * | 2013-11-20 | 2014-09-10 | 湖北大学 | Cold mixing epoxy asphalt repairing material and preparation method thereof |
CN109694585A (en) * | 2018-12-27 | 2019-04-30 | 内蒙古农业大学 | A kind of high viscosity composite modified asphalt and preparation method thereof |
CN111851193A (en) * | 2020-07-01 | 2020-10-30 | 南京励米青新材料科技有限公司 | Environment-friendly asphalt structure and construction method thereof |
-
2022
- 2022-07-21 CN CN202210856562.0A patent/CN115323881A/en active Pending
Patent Citations (7)
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CN103043962A (en) * | 2011-10-17 | 2013-04-17 | 中国石油化工股份有限公司 | Mixture for normal-temperature repairing of asphalt pavement pits, and preparation method and application thereof |
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CN109694585A (en) * | 2018-12-27 | 2019-04-30 | 内蒙古农业大学 | A kind of high viscosity composite modified asphalt and preparation method thereof |
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Title |
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