CN115180877A - Composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI (diphenylmethane diisocyanate) and preparation method thereof - Google Patents
Composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI (diphenylmethane diisocyanate) and preparation method thereof Download PDFInfo
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- CN115180877A CN115180877A CN202210800349.8A CN202210800349A CN115180877A CN 115180877 A CN115180877 A CN 115180877A CN 202210800349 A CN202210800349 A CN 202210800349A CN 115180877 A CN115180877 A CN 115180877A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 88
- 239000007788 liquid Substances 0.000 title claims abstract description 80
- 239000000203 mixture Substances 0.000 title claims abstract description 61
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000002156 mixing Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 title description 36
- 239000004568 cement Substances 0.000 claims abstract description 16
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 16
- 239000011707 mineral Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 239000003085 diluting agent Substances 0.000 abstract description 8
- 239000004814 polyurethane Substances 0.000 abstract description 4
- 229920002635 polyurethane Polymers 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000009471 action Effects 0.000 abstract description 2
- 238000012644 addition polymerization Methods 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 238000005935 nucleophilic addition reaction Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 19
- 239000000463 material Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
A composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI and a preparation method thereof belong to the technical field of road engineering, and the specific scheme is as follows: the composite cold-mixing cold-paving liquid asphalt mixture based on the polymeric MDI comprises, by mass, 100 parts of aggregate, 5.0-6.5 parts of liquid asphalt, 0.15-0.3 part of polymeric MDI, 1.4-2.8 parts of mineral powder and 0.6-1.2 parts of PO.42.5 cement. In the invention, a part of MDI and active hydrogen in the liquid asphalt are subjected to nucleophilic addition reaction to generate polyurethane chains, and the rest MDI is subjected to addition polymerization reaction to convert short polyurethane chains into complex branched network structures, thereby reducing the overall elasticity of the liquid asphalt and improving the toughness of the liquid asphalt. With the volatilization of the diluent in the liquid asphalt, the action of the polymeric MDI is more obvious, and the polymeric MDI forms stable chemical bonds with active hydroxyl in the diluent and water, thereby improving the high-temperature performance of the liquid asphalt.
Description
Technical Field
The invention belongs to the technical field of road engineering, and particularly relates to a composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI modification and a preparation method thereof.
Background
The asphalt pavement has the advantages of firm and flat surface, good durability, comfortable driving, convenient maintenance and the like, and gradually becomes the pavement form mainly adopted by high-grade highways in China in the past decades. However, with the deep and attentive green and environmental protection and sustainable engineering concept, the conventional hot-mix and hot-paving asphalt mixture gradually has a plurality of defects. Particularly, the hot-mixed material cannot be used for repairing the road surface in winter in forest areas, mountain areas and northern areas, so that the comfort and safety of vehicle driving are seriously influenced, and the service life of the whole road surface is obviously shortened. To solve this problem, researchers have developed a variety of cold-mix cold-laid asphalt materials, including liquid asphalt, emulsified asphalt, epoxy asphalt, and the like. The liquid asphalt mixture has received wide attention due to the advantages of being capable of being constructed at low temperature and in rainy and snowy days, capable of being stored for a long time, low in production cost, capable of being quickly opened after being repaired and the like.
The liquid asphalt is prepared by mixing easily volatile substances such as diesel oil and kerosene as diluents with basic asphalt, high-viscosity agent, surfactant, solubilizer and the like. The addition of the diluent can effectively reduce the viscosity of the asphalt and realize low-temperature mixing and paving of the mixture. However, the residual diluent causes the problems of poor water stability and high temperature stability of the liquid asphalt mixture, and the like, thereby limiting the large-scale popularization and application of the liquid asphalt mixture.
In the existing research of liquid asphalt modification methods, researchers try to improve the performance of liquid asphalt through epoxy resin materials, and obtain a good effect in the aspect of high-temperature performance, but the improvement effect on water stability is limited, so that the comprehensive performance of the mixture cannot be considered, and the high cost of the epoxy resin materials causes the low application and popularization value.
Disclosure of Invention
The invention aims to solve the problem that the water stability and the high-temperature stability of a liquid asphalt mixture are insufficient in the prior art, and provides a composite cold-mix cold-spread liquid asphalt mixture based on polymeric MDI modification and a preparation method thereof.
The invention adopts the following technical scheme:
the composite cold-mixing cold-paving liquid asphalt mixture based on the polymeric MDI comprises, by mass, 100 parts of aggregate, 5.0-6.5 parts of liquid asphalt, 0.15-0.3 part of polymeric MDI, 1.4-2.8 parts of mineral powder and 0.6-1.2 parts of PO.42.5 cement.
A preparation method of a composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI comprises the following steps:
the method comprises the following steps: pouring liquid asphalt and polymeric MDI into a reaction vessel, and stirring under a shear apparatus at normal temperature to obtain modified liquid asphalt; uniformly stirring mineral powder and PO.42.5 cement in a container to obtain a composite filler;
step two: adding LB-16-grade aggregate into a stirrer, and stirring for 30-60 seconds at normal temperature;
step three: adding the modified liquid asphalt into a stirrer, and stirring for 60-90 seconds at normal temperature;
step four: adding the composite filler into a stirrer, and stirring for 60-90 seconds at normal temperature to obtain the composite cold-mixing cold-paving liquid asphalt mixture based on the polymeric MDI.
Compared with the prior art, the invention has the beneficial effects that:
the preparation process is simpler, the mixing and paving at normal temperature are completely realized, and no specific requirement is imposed on the temperature of the aggregate and the liquid asphalt. Compared with the common epoxy resin modified liquid asphalt in the prior art, the preparation method adopted by the invention has low price, and synchronously improves the high-temperature performance and the water stability of the mixture. In the added polymeric MDI, a part of MDI and active hydrogen in the liquid asphalt generate nucleophilic addition reaction to generate polyurethane chains, and the rest MDI generates addition polymerization reaction to convert short polyurethane chains into complex branched network structures, thereby reducing the overall elasticity of the liquid asphalt and improving the toughness of the liquid asphalt. With the volatilization of the diluent in the liquid asphalt, the action of the polymeric MDI is more obvious, and the polymeric MDI forms stable chemical bonds with active hydroxyl in the diluent and water, thereby improving the high-temperature performance of the liquid asphalt. In addition, when the asphalt film is damaged in the process of freeze-thaw cycle, the infiltrated water and the ordinary portland cement are subjected to hydration reaction, so that the toughness of the liquid asphalt is further improved. Meanwhile, the formed C-S-H cement hydration product plays a role in sealing cracks and compensating strength loss, and the aim of improving the water stability of the liquid asphalt mixture is fulfilled.
Drawings
FIG. 1 is a pictorial representation of a liquid asphalt;
FIG. 2 is a pictorial representation of a polymeric MDI;
FIG. 3 is a first drawing of a first embodiment of a composite cold-mix cold-spread liquid asphalt mixture based on polymeric MDI;
FIG. 4 is a second drawing of a composite cold-mix cold-spread liquid asphalt mixture based on polymeric MDI.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, and it is to be understood that the described embodiments are only a part of the embodiments of the invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
Detailed description of the invention
The composite cold-mixing cold-paving liquid asphalt mixture based on the polymeric MDI comprises, by mass, 100 parts of aggregate, 5.0-6.5 parts of liquid asphalt, 0.15-0.3 part of polymeric MDI, 1.4-2.8 parts of mineral powder and 0.6-1.2 parts of PO.42.5 cement.
The liquid asphalt is black viscous at normal temperature and has fluidity, the standard viscosity value is 450-600S at 25 ℃, and the penetration degree of evaporation residues is 140-160 (unit is 0.1 mm). The liquid asphalt has good adhesion with the aggregate, and can improve the strength and the water stability of the mixture, as shown in figure 1. The polymeric MDI is reddish brown fluid at normal temperature, and has a Brookfield viscosity value of 0.15Pa.s to 0.2Pa.s at 25 ℃, as shown in FIG. 2.
The aggregate is generally selected to have clean and rough surface, hard particles and angular particles, and can be acidic or alkaline. Through strict screening, LB-16 gradation is determined, and the detailed information is shown in Table 1.
TABLE 1LB-16 grading Range
| Mesh size | Design grading | Upper limit of grading | Lower limit of grading | Median grading of |
| 19.0 | 100 | 100 | 100 | 100 |
| 16.0 | 95 | 100 | 90 | 95 |
| 13.2 | 85 | 90 | 80 | 85 |
| 9.5 | 67.5 | 75 | 60 | 67.5 |
| 4.75 | 42.5 | 50 | 35 | 42.5 |
| 2.36 | 15 | 25 | 10 | 17.5 |
| 1.18 | 12 | 20 | 8 | 14 |
| 0.6 | 9 | 16 | 6 | 11 |
| 0.3 | 6 | 12 | 5 | 8.5 |
| 0.15 | 4 | 8 | 3 | 5.5 |
| 0.075 | 2 | 5 | 2 | 3.5 |
The cold-mixing cold-paving liquid asphalt mixture uses mineral powder and cement as composite fillers, the particle size of the selected mineral powder is less than 0.075mm, the mineral powder can not only fill gaps of coarse and fine aggregates, but also adsorb diluent components in liquid asphalt, and the strength improvement speed is accelerated. The PO.42.5 cement is used to react with permeated water to raise the toughness and water stability of the liquid asphalt mixture.
Detailed description of the invention
The preparation method of the composite cold-mix cold-paving liquid asphalt mixture based on polymeric MDI (diphenylmethane diisocyanate) comprises the following steps:
the method comprises the following steps: preparing aggregate, liquid asphalt liquid, polymeric MDI, mineral powder and PO.42.5 cement of all grades, and weighing the required mass for later use;
step two: pouring the weighed liquid asphalt and the polymeric MDI into a reaction vessel, stirring the mixture under a shearing instrument at normal temperature at the rotating speed of 2000-3000 r/min for 5-10 min to prepare modified liquid asphalt;
step three: uniformly stirring the weighed mineral powder and PO.42.5 cement in a container to prepare the composite filler;
step four: adding the weighed LB-16-grade aggregate into a stirrer, and stirring for 30-60 seconds at normal temperature;
step five: weighing modified liquid asphalt with corresponding mass, adding the modified liquid asphalt into a stirrer, and stirring for 60-90 seconds at normal temperature;
step six: weighing the composite filler with corresponding mass, adding the composite filler into a stirrer, and stirring for 60-90 seconds at normal temperature to obtain the composite cold-mixing cold-paving liquid asphalt mixture based on the polymeric MDI, wherein the composite cold-mixing cold-paving liquid asphalt mixture is shown in figure 3.
Example 1
A composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI comprises the following formula components in parts by weight: 100 portions of aggregate, 5.0 portions of liquid asphalt, 0.15 portion of polymeric MDI, 1.4 portions of mineral powder and 0.6 portion of PO.42.5 cement.
Example 2
A composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI comprises the following formula components in parts by weight: 100 portions of aggregate, 5.4 portions of liquid asphalt, 0.22 portion of polymeric MDI, 1.4 portions of mineral powder and 0.6 portion of PO.42.5 cement.
Example 3
A composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI comprises the following formula components in parts by weight: 100 portions of aggregate, 6.0 portions of liquid asphalt, 0.3 portion of polymeric MDI, 2.1 portions of mineral powder and 0.9 portion of PO.42.5 cement.
Example 4
The composite cold-mixing cold-paving liquid asphalt mixture based on the polymeric MDI comprises the following formula components in parts by weight: 100 portions of aggregate, 6.5 portions of liquid asphalt, 0.3 portion of polymeric MDI, 2.8 portions of mineral powder and 1.2 portions of PO.42.5 cement.
The optimal performance of the composite cold-mixing cold-paving liquid asphalt mixture of the polymeric MDI is as follows:
adhesion: the adhesiveness of the liquid asphalt mixtures in examples 1 and 2 was tested by the water boiling method, and it was found that a small part of the asphalt film was peeled off, but the peeled area was small, and the adhesiveness was rated at grade 4, and the use requirements were satisfied.
Initial strength: about 1080g of the liquid asphalt mixture in the example 1 (based on the height of a test piece conforming to 63.5 +/-1.3 mm) is taken and solidified for 2 hours at normal temperature, the mixture is taken out and put into a Marshall test mould, the front and the back of the mixture are respectively compacted for 50 times, and the stability value of the mixture is measured to be 1.72kN after the mixture is demoulded and is kept in a water bath box at the temperature of 25 +/-0.5 ℃ for 60 minutes.
Forming strength: approximately 1180g of the liquid asphalt mixture in example 2 is taken and loaded into a test mold at normal temperature (based on the height of a test piece being 63.5 +/-1.3 mm), two surfaces of the test mold are respectively compacted for 25 times, the test mold is vertically placed in a 110 ℃ constant temperature box for 24 hours along with the side surface of the test mold, then the two surfaces of the test mold are respectively compacted for 25 times, the test mold is placed in the normal temperature for curing for 24 hours, the test mold is demoulded and placed in a 25 ℃ constant temperature water box for curing for 1 hour, and the Marshall stability value is determined to be 32.55kN.
Freeze-thaw split ratio: the liquid asphalt mixture of example 3 was molded by the Marshall molding Strength test method, and the test pieces were divided into two groups. The cleavage tensile strength of the Marshall test piece of the group 1 is measured after the Marshall test piece is soaked in water bath at the temperature of 25 ℃ for 2 hours; and (3) saturating the group 2 test pieces with water in vacuum for 15min, placing the test pieces in a refrigerator at the temperature of-18 ℃ for 16h, then preserving the heat in a water bath at the temperature of 60 ℃ for 24h, then placing the test pieces in a water bath at the temperature of 25 ℃ for soaking for 2h, measuring the splitting tensile strength, and calculating the TSR to be 94.1%.
Dynamic stability: taking about 10Kg of the liquid asphalt mixture in the embodiment 4, filling the mixture into a test mold at normal temperature, compacting for 12 times, placing the test mold in a thermostat with the temperature of 110 ℃ for 24 hours, compacting for 12 times again, and placing the test mold in normal temperature for curing for 24 hours. The value of the dynamic stability at 60 ℃ is 1521.7 times/mm.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. A composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI is characterized in that: the cement aggregate comprises 100 parts of aggregate, 5.0-6.5 parts of liquid asphalt, 0.15-0.3 part of polymeric MDI, 1.4-2.8 parts of mineral powder and 0.6-1.2 parts of PO.42.5 cement in parts by mass.
2. The composite cold mix and cold spread liquid asphalt mixture based on polymeric MDI according to claim 1, wherein: the aggregate grading type is LB-16.
3. The composite cold mix and cold spread liquid asphalt mixture based on polymeric MDI according to claim 1, wherein: the gradation range of the LB-16 is
。
4. The composite cold-mix cold-spread liquid asphalt mixture based on polymeric MDI according to claim 1, which is characterized in that: the particle size of the mineral powder is less than 0.075mm.
5. The preparation method of the composite cold-mix cold-spread liquid asphalt mixture based on polymeric MDI as in any one of claims 1 to 4, which is characterized by comprising the following steps:
the method comprises the following steps: pouring liquid asphalt and polymeric MDI into a reaction vessel, and stirring under a shear apparatus at normal temperature to obtain modified liquid asphalt; uniformly stirring mineral powder and PO.42.5 cement in a container to obtain a composite filler;
step two: adding LB-16-grade aggregate into a stirrer, and stirring for 30-60 seconds at normal temperature;
step three: adding the modified liquid asphalt into a stirrer, and stirring for 60-90 seconds at normal temperature;
step four: and adding the composite filler into a stirrer, and mixing for 60-90 seconds at normal temperature to obtain the composite cold-mixing cold-paving liquid asphalt mixture based on the polymeric MDI.
6. The preparation method of the composite cold-mix cold-spread liquid asphalt mixture based on polymeric MDI according to claim 5, wherein the preparation method comprises the following steps: in the first step, the rotating speed of the shearing instrument is 2000-3000 r/min, and the shearing time is 5-10 min.
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|---|---|---|---|
| CN202210800349.8A CN115180877A (en) | 2022-07-06 | 2022-07-06 | Composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI (diphenylmethane diisocyanate) and preparation method thereof |
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| CN202210800349.8A CN115180877A (en) | 2022-07-06 | 2022-07-06 | Composite cold-mixing cold-paving liquid asphalt mixture based on polymeric MDI (diphenylmethane diisocyanate) and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104610769A (en) * | 2015-02-10 | 2015-05-13 | 北京市市政工程研究院 | Normal-temperature-modified asphalt for high-strength cold-laid asphalt mixture and preparation method of normal-temperature-modified asphalt |
| RU2558049C1 (en) * | 2014-07-22 | 2015-07-27 | Павел Тимофеевич Полуэктов | Cold method for obtaining asphalt concrete of increased strength for repair and construction of automobile roads |
| US20160145435A1 (en) * | 2014-11-26 | 2016-05-26 | Shenzhen Traffic Construction Engineering Test & Detection Center | Environmental Cold-mix Adjustable-modulus Pavement Material and Manufacturing Method thereof |
| CN109824317A (en) * | 2019-01-16 | 2019-05-31 | 北京建筑大学 | A kind of emulsified asphalt preparation method and application for cold mixing cold-application |
| CN113620656A (en) * | 2021-09-08 | 2021-11-09 | 哈尔滨工业大学 | Preparation method of cold-mix fully-recycled asphalt mixture based on solvent-based liquid asphalt |
-
2022
- 2022-07-06 CN CN202210800349.8A patent/CN115180877A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2558049C1 (en) * | 2014-07-22 | 2015-07-27 | Павел Тимофеевич Полуэктов | Cold method for obtaining asphalt concrete of increased strength for repair and construction of automobile roads |
| US20160145435A1 (en) * | 2014-11-26 | 2016-05-26 | Shenzhen Traffic Construction Engineering Test & Detection Center | Environmental Cold-mix Adjustable-modulus Pavement Material and Manufacturing Method thereof |
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| CN109824317A (en) * | 2019-01-16 | 2019-05-31 | 北京建筑大学 | A kind of emulsified asphalt preparation method and application for cold mixing cold-application |
| CN113620656A (en) * | 2021-09-08 | 2021-11-09 | 哈尔滨工业大学 | Preparation method of cold-mix fully-recycled asphalt mixture based on solvent-based liquid asphalt |
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| Title |
|---|
| 于洪江，李明樾主编: "《道路工程施工技术》", 31 March 2021, 重庆大学出版社 * |
| 刘鹏: "常温拌和沥青混合料性能评价与改善研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
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Application publication date: 20221014 |