CN113651560A - Fine-grained thin-layer overlay asphalt mixture - Google Patents
Fine-grained thin-layer overlay asphalt mixture Download PDFInfo
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- CN113651560A CN113651560A CN202110894629.5A CN202110894629A CN113651560A CN 113651560 A CN113651560 A CN 113651560A CN 202110894629 A CN202110894629 A CN 202110894629A CN 113651560 A CN113651560 A CN 113651560A
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- 239000000203 mixture Substances 0.000 title claims abstract description 52
- 239000010426 asphalt Substances 0.000 title claims abstract description 48
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000011707 mineral Substances 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000003381 stabilizer Substances 0.000 claims abstract description 8
- 235000010755 mineral Nutrition 0.000 claims description 14
- 238000005056 compaction Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 239000011800 void material Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 4
- 229920005610 lignin Polymers 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- 235000012255 calcium oxide Nutrition 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 229920005594 polymer fiber Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 17
- 238000003801 milling Methods 0.000 description 13
- 239000004575 stone Substances 0.000 description 9
- 238000002156 mixing Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 238000003892 spreading Methods 0.000 description 7
- 230000007480 spreading Effects 0.000 description 7
- 101100257124 Caenorhabditis elegans sma-10 gene Proteins 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000010409 ironing Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- E01C19/12—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 distributing granular or liquid materials
- E01C19/21—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 distributing granular or liquid materials for simultaneously but separately applying liquid material and granular or pulverulent material, e.g. bitumen and grit, with or without spreading ; for filling grooves and gritting the filling
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
- E01C7/353—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively bituminous binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively bituminous binders, e.g. for roughening or clearing
-
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a fine-grained thin-layer overlay asphalt mixture, belonging to the technical field of road pavement materials. The mixture comprises coarse aggregate, fine aggregate, filler, cementing material and stabilizer, and is characterized in that: setting 8mm sieve pores as the maximum nominal particle size, and the grading range of the mineral aggregate in the key sieve pores is as follows by percentage: 11mm, 100%; 8.0mm, 90% -100%; 2.36mm, 24% -34%; 0.075mm 10% -14%. Compared with the prior art, when the mixture is used in the maintenance process of a high-grade highway, the engineering investment can be effectively reduced, and the mixture has the functions of good durability, good skid resistance and pavement noise reduction.
Description
Technical Field
The invention relates to the field of pavement materials, in particular to a fine-grained thin-layer overlay asphalt mixture.
Background
In the prior art, the mixture which is recommended by the national standard and is suitable for the surface layer of the asphalt pavement mainly comprises a fine grain type and a sand grain type. For the hot-mixing hot-paving dense-graded asphalt mixture, the compacted thickness of one layer of the asphalt layer is not less than 2.5-3.0 times of the nominal maximum particle size of the aggregate. Therefore, the design thickness of the current high-grade highway pavement is usually 40mm, and the types of common mixed materials are AC-13 and SMA-13. Although the designed thickness of the pavement can be reduced to 20-30mm by AC-10 and AC-5, the high-temperature performance is insufficient due to insufficient framework structure of the dense grading, the skid resistance is insufficient due to small macroscopic structure of the dense grading surface, the driving safety is affected, the high-grade pavement is generally used for low-grade roads or urban non-motor vehicle lanes, and the surface layer of the high-grade road basically does not adopt the two mixed material forms. The design thickness of the SMA-10 can reach 30mm, and compared with the SMA-13, although the thickness is reduced by 10mm, the SMA-10 has the following two defects: firstly, the consumption of the asphalt of the SMA-10 is 0.2-0.3% higher than that of the SMA-13, and the difference between the consumption of the asphalt and the construction cost of the SMA-13 is not large from the economic point of view; secondly, the minimum milling thickness of the original pavement is 30mm, so that interlayer is formed, the overall durability is not favorable, and therefore, SMA-13 with the thickness of 40mm is selected for road surface finish maintenance in actual operation.
Disclosure of Invention
The technical task of the invention is to provide a fine-grained thin-layer overlay asphalt mixture aiming at the defects of the prior art. When the mixture is used in the maintenance process of a high-grade highway, the engineering investment can be effectively reduced, and the mixture has the functions of good durability, good skid resistance and pavement noise reduction.
The technical task of the invention is realized by the following modes: the fine grain type thin layer overlay asphalt mixture comprises coarse aggregate, fine aggregate, filler, cementing material and stabilizer, and is characterized in that: set up 11mm sieve mesh as the maximum particle size, set up 8mm sieve mesh as the biggest nominal particle size to the percent of passing through of key sieve mesh mineral aggregate, its gradation scope is: 11mm, 100%; 8.0mm, 90% -100%; 2.36mm, 24% -34%; 0.075mm 10% -14%.
Preferably, the gradation range of the mixture of the invention is as follows according to the passing percentage of the mineral aggregate with each particle size: 11mm, 100%; 8.0mm, 90-100%; 4.75mm, 32-64%; 2.36mm, 24-34%; 1.18mm, 18-28%; 0.6mm, 15-24%; 0.3mm, 13-20%; 0.15mm, 11-16%; 0.075mm, 10-14%.
Preferably, hard igneous rock with the thickness of 3-8 mm and the thickness of 3-5 mm is used as coarse aggregate, machine-made sand with the thickness of 0-3mm is used as fine aggregate, and limestone mineral powder is used as filler.
The hard igneous rock is basalt and/or diabase and the like.
Preferably, the weight ratio of 3-8 mm coarse aggregate, 3-5 mm coarse aggregate, 0-3mm fine aggregate and filler is (45-55): 11-21): 18-28): 10-13, and particularly preferably is (50-55): 14-16): 21-23): 10-11.
Preferably, 10-20% of quicklime powder or slaked lime powder is added into the filler.
Preferably, the stabilizer is lignin, mineral or polymer fiber, and accounts for 0.3-0.5% of the mass of the mixture.
Preferably, the cementing material is SBS modified asphalt, high-viscosity high-elasticity modified asphalt or SBS and rubber composite modified asphalt, and the cementing material accounts for 6.2-6.7% of the mass of the mixture.
Preferably, the designed porosity of the mixture is 3.5-4.0%, the mineral aggregate porosity is not less than 18%, and the porosity after the on-site compaction is 4.0-5.0%.
When the mixture is used for road surface construction, the paving steps are as follows:
s1, finely milling an original road surface, wherein milling thickness is strictly controlled to be 15-20 mm, and the situation that an original surface layer is too thin to form a thin interlayer after milling is avoided;
s2, cleaning and milling the milled surface after milling;
s3, the mixing process of the fine-grain type thin-layer overlay asphalt mixture follows the following steps: weighing aggregate → putting fiber → metering asphalt → mixing mixture → loading mixture, controlling the heating temperature of the aggregate to be 190-220 ℃ and the heating temperature of the asphalt to be 165-175 ℃, and considering that the temperature loss is fast during the construction of thin-layer mixture, the discharging temperature of the mixture is preferably controlled to be 180-185 ℃;
s4, spreading the hot asphalt macadam seal, namely adopting a synchronous macadam seal spreading vehicle, wherein the hot asphalt is SBS modified asphalt, and the spreading amount is preferably 1.0-1.2 Kg/m2The crushed stone is 4.75-9.5 mm crushed stone which is pre-mixed by adding 0.3-0.5% of petroleum asphalt in the dust removal of the mixing station, and the spreading amount of the crushed stone is preferably 5.5-6.5 Kg/m2Carrying out pressure stabilization for 1-2 times by using a light rubber wheel;
and S5, after the hot asphalt macadam seal coat is finished, a paver is in place to preheat for at least 1h, the temperature of an ironing plate is not lower than 100 ℃, mixed material paving is carried out, the paving speed is 3-4 m/min, and a fine grain type thin-layer cover coat with the thickness of 25-30 mm is formed after compaction.
Compared with the prior art, the fine-grained thin-layer overlay asphalt mixture has the following outstanding beneficial effects:
through a large number of tests, the nominal maximum particle size is determined to be 8.0mm, the thickness can be 2.0-2.5 cm, compared with the thickness of SMA-10, the thickness is required to be 2.5-3.0 cm, the thickness can be reduced by 1cm, the good high-temperature stability of the SMA mixture is ensured, and the paving thickness of the mat coat pavement layer is greatly reduced.
And (II) the coarse aggregate above the 2.36mm sieve pore accounts for about 70, has rough surface, has good skid resistance and can reduce the noise in the driving process.
And thirdly, when the pavement is maintained, the milling thickness can be reduced, so that an interlayer is avoided, the integral durability is facilitated, and the maintenance cost is low.
Drawings
FIG. 1 is a grading diagram of a fine-grained thin-layer overlay asphalt mixture SMA8 using basalt stone in the examples.
FIG. 2 is a graph of the grading of a fine-grained thin-coated asphalt mixture SMA8 using diabase rock in the examples.
Detailed Description
The fine-grained thin-layer overlay asphalt mixture according to the invention is described in detail below in the following examples with reference to the drawing of the description.
The first embodiment is as follows:
the method comprises the following steps of (I) taking 3-8 mm and 3-5 mm basalt broken stones as coarse aggregates, taking 0-3mm basalt machine-made sand as fine aggregates, and taking limestone mineral powder as a filler.
The weight ratio of each level of mineral aggregate is as follows:
and (II) SBS modified asphalt is used as cementing material, and the optimal asphalt usage amount is 6.3% of the mixture mass.
And (III) lignin fiber is used as a stabilizer and accounts for 0.3 percent of the mass of the mixture.
And the designed porosity of the mixture is 4.0 percent, and the synthetic grading curve is shown in the attached figure 1. The specific passage rate of the synthetic grading is shown in the following table:
(V) paving step
S1, traffic sealing is carried out according to an actual road surface section needing to be treated, then milling is carried out, fine milling is adopted for milling, milling thickness is strictly controlled to be 15-20 mm, and the situation that an original surface layer is milled, remained and thinned to form a thin interlayer is avoided;
s2, carefully cleaning a milled surface after milling, drying, cleaning and avoiding impurities, and informing a backyard of mixing a mixture in the field cleaning process;
s3, the mixing process of the fine-grain type thin-layer overlay asphalt mixture is similar to that of the traditional SMA mixture, and the following steps are followed: weighing aggregate → putting fiber → metering asphalt → mixing mixture → loading mixture, controlling the heating temperature of aggregate at 210 ℃ and the heating temperature of asphalt at 170 ℃, and considering that the temperature loss is fast during the construction of thin-layer mixture, the discharging temperature of the mixture is preferably controlled at 180-185 ℃;
s4, after the on-site milling and planing surface is cleaned, after the inspection and acceptance are qualified, spreading a hot asphalt seal coat, wherein a synchronous chip seal coat spreading vehicle is adopted, and the hot asphalt isThe SBS modified asphalt is preferably sprayed at 1.0-1.2 Kg/m2The crushed stone is 4.75-9.5 mm crushed stone which is pre-mixed by adding 0.3% petroleum asphalt in the dust removal of the mixing station, the pre-mixed crushed stone is preferably in a whitish state, and the spreading amount of the crushed stone is preferably 5.5-6.0 Kg/m2The light rubber wheel is used for stabilizing the pressure for 2 times;
and S5, after the hot asphalt macadam seal coat is finished, the paver is in place to preheat for at least 1h, the temperature of an ironing plate is not lower than 100 ℃, mixed material paving is carried out, the speed during paving is strictly controlled to be 3.5 +/-0.2 m/min, the paving speed is kept uniform, the rolling after the mixed material paving follows the principle of 'following, slow pressing, high frequency, low amplitude and little water', and a fine grain type thin-layer cover coat with the thickness of 25mm is formed after compaction.
And (VI) testing the obtained finish coat according to national and industrial standards, wherein the compaction void ratio is 4.5-5.5%, the dynamic stability rut proved by experience is 4238 times/mm, the deepwater coefficient is 20ml/min, the structure depth is 0.84mm, and the pendulum friction value is 68 BNP.
Example two:
firstly, diabase macadam with the thickness of 3-8 mm and 3-5 mm is used as a coarse aggregate, diabase machine-made sand with the thickness of 0-3mm is used as a fine aggregate, and limestone mineral powder is used as a filler.
The weight ratio of each level of mineral aggregate is as follows:
and (II) taking high-viscosity high-elasticity modified asphalt as a cementing material. The optimal asphalt dosage is 6.2 percent of the mass of the mixture.
And (III) lignin fiber is used as a stabilizer and accounts for 0.3 percent of the mass of the mixture.
And the designed porosity of the mixture is 4.0 percent, and the synthetic grading curve is shown in the attached figure 2. The specific passage rate of the synthetic grading is shown in the following table:
and (V) paving: following compaction, a fine-grained, thin-film overcoat having a thickness of 20mm was formed as in example one.
And (VI) testing the obtained finish coat according to national and industrial standards, wherein the compaction void ratio is 4.3-5.2%, the dynamic stability rut proved by experience is 4369 times/mm, the deepwater coefficient is 15ml/min, the construction depth is 0.92mm, and the pendulum friction value is 72 BNP.
The detection data show that the volume index of the compacted core sample completely meets the control requirement of site construction, the high-temperature performance of the mixture can also meet the relevant requirement, the surface of the fine grain type thin layer cover surface is compact after construction, and the anti-slip performance is excellent after anti-slip index detection.
The present invention has been described in detail with reference to specific embodiments, which are intended to be illustrative only and not limiting. Insubstantial modifications of the invention, made by those skilled in the art based on the teachings of the invention, fall within the scope of the invention.
Claims (7)
1. The fine grain type thin layer overlay asphalt mixture comprises coarse aggregate, fine aggregate, filler, cementing material and stabilizer, and is characterized in that: set up 11mm sieve mesh as the maximum particle size, 8mm sieve mesh as the biggest nominal particle size to the percent of passing through of key sieve mesh mineral aggregate, its gradation scope is: 11mm, 100%; 8.0mm, 90% -100%; 2.36mm, 24% -34%; 0.075mm 10% -14%.
2. A fine-grained thin-layer overlay asphalt mixture according to claim 1, characterized in that the gradation ranges, in percent passage of the mineral aggregates of each grain size:
11mm，100％；8.0mm，90～100％；4.75mm，32～64％；2.36mm，24～34％；1.18mm，18～28％；0.6mm，15～24％；0.3mm，13～20％；0.15mm，11～16％；0.075mm，10～14％。
3. the fine-grained thin-layer overlay asphalt mixture according to claim 1 or 2, wherein hard igneous rock of 3-8 mm and 3-5 mm is used as coarse aggregate, hard igneous rock machine-made sand of 0-3mm is used as fine aggregate, and limestone mineral powder is used as filler.
4. The fine-grained thin-layer overlay asphalt mixture according to claim 3, wherein the weight ratio of 3-8 mm coarse aggregate, 3-5 mm coarse aggregate, 0-3mm fine aggregate and filler is (45-55): (11-21): (18-28): (10-13).
5. A fine-grained thin-layer overlay asphalt mixture according to claim 3, wherein the filler is admixed with 10-20% of quicklime or slaked lime.
6. The fine-grained thin-layer overlay asphalt mixture according to claim 1 or 2, wherein the stabilizer is lignin, mineral or polymer fiber, and the stabilizer accounts for 0.3-0.5% of the mass of the mixture;
the cementing material is SBS modified asphalt, high-viscosity high-elasticity modified asphalt or SBS and rubber composite modified asphalt, and accounts for 6.2-6.7% of the mass of the mixture.
7. A fine-grained thin-layer overlay asphalt mixture according to claim 1 or 2, wherein the mixture design void fraction is 3.5% to 4.0%, the mineral aggregate void fraction is not less than 18%, and the void fraction after field compaction is 4.0% to 5.0%.
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| CN202110894629.5A CN113651560A (en) | 2021-08-05 | 2021-08-05 | Fine-grained thin-layer overlay asphalt mixture |
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| CN202110894629.5A CN113651560A (en) | 2021-08-05 | 2021-08-05 | Fine-grained thin-layer overlay asphalt mixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354545A (en) * | 2022-09-16 | 2022-11-18 | 浙江钱塘江海塘物业管理有限公司 | Asphalt concrete structure for road pavement and construction method thereof |
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| CN101508541A (en) * | 2009-03-13 | 2009-08-19 | 上海浦东路桥建设股份有限公司 | Medium-temperature pavement ultra-fine asphalt mixture for ultra-thin layer cover |
| JP2012007317A (en) * | 2010-06-23 | 2012-01-12 | Nippon Road Co Ltd:The | Asphalt mixture for thin layer pavement and method of repairing pavement surface using the same |
| CN108947335A (en) * | 2018-08-27 | 2018-12-07 | 华南理工大学 | A kind of super viscous noise reduction asphalt and super viscous noise reduction asphalt essence cover |
| CN112279558A (en) * | 2020-11-17 | 2021-01-29 | 湖南省交通科学研究院有限公司 | Small-particle-size dense-grade ultra-thin wearing layer and preparation method thereof |
| CN112661443A (en) * | 2021-01-15 | 2021-04-16 | 广东华路交通科技有限公司 | High-performance economical asphalt mixture and construction method thereof |
-
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- 2021-08-05 CN CN202110894629.5A patent/CN113651560A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508541A (en) * | 2009-03-13 | 2009-08-19 | 上海浦东路桥建设股份有限公司 | Medium-temperature pavement ultra-fine asphalt mixture for ultra-thin layer cover |
| JP2012007317A (en) * | 2010-06-23 | 2012-01-12 | Nippon Road Co Ltd:The | Asphalt mixture for thin layer pavement and method of repairing pavement surface using the same |
| CN108947335A (en) * | 2018-08-27 | 2018-12-07 | 华南理工大学 | A kind of super viscous noise reduction asphalt and super viscous noise reduction asphalt essence cover |
| CN112279558A (en) * | 2020-11-17 | 2021-01-29 | 湖南省交通科学研究院有限公司 | Small-particle-size dense-grade ultra-thin wearing layer and preparation method thereof |
| CN112661443A (en) * | 2021-01-15 | 2021-04-16 | 广东华路交通科技有限公司 | High-performance economical asphalt mixture and construction method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354545A (en) * | 2022-09-16 | 2022-11-18 | 浙江钱塘江海塘物业管理有限公司 | Asphalt concrete structure for road pavement and construction method thereof |
| CN115354545B (en) * | 2022-09-16 | 2024-07-30 | 浙江钱塘江海塘物业管理有限公司 | Asphalt concrete structure for road pavement and construction method thereof |
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