CN113620654A - Gravel asphalt mixture and preparation method thereof - Google Patents
Gravel asphalt mixture and preparation method thereof Download PDFInfo
- Publication number
- CN113620654A CN113620654A CN202111037762.5A CN202111037762A CN113620654A CN 113620654 A CN113620654 A CN 113620654A CN 202111037762 A CN202111037762 A CN 202111037762A CN 113620654 A CN113620654 A CN 113620654A
- Authority
- CN
- China
- Prior art keywords
- gravel
- mixture
- steel slag
- asphalt
- asphalt mixture
- Prior art date
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- Granted
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 72
- 239000000203 mixture Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000002893 slag Substances 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 40
- 235000019738 Limestone Nutrition 0.000 claims abstract description 30
- 239000006028 limestone Substances 0.000 claims abstract description 30
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 29
- 239000011707 mineral Substances 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 26
- 239000000945 filler Substances 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 17
- 239000002994 raw material Substances 0.000 claims description 12
- 239000010453 quartz Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 8
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 5
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 claims description 5
- 235000012241 calcium silicate Nutrition 0.000 claims description 5
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 5
- 229910021534 tricalcium silicate Inorganic materials 0.000 claims description 5
- 235000019976 tricalcium silicate Nutrition 0.000 claims description 5
- 210000003462 vein Anatomy 0.000 claims description 5
- 229910000859 α-Fe Inorganic materials 0.000 claims description 5
- 239000010454 slate Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 239000002344 surface layer Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002440 industrial waste Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007728 cost analysis Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a gravel asphalt mixture and a preparation method thereof, belonging to the field of road engineering construction and comprising the gravel mixture and asphalt according to the oil-stone ratio of 4-5%; the gravel mixture is composed of the following aggregates according to the mixing proportion: 45-51% of gravel coarse aggregate, 45-51% of fine aggregate, 1.6-2.4% of limestone mineral powder, 0.8-1.2% of steel slag and 0.8-1.2% of cement, wherein the sum of the mixing proportion of the aggregates of all grades is 100%. The invention utilizes industrial waste steel slag as a filler of the gravel asphalt mixture, not only can change waste into valuable, reduce environmental pollution, improve the water stability of the gravel asphalt mixture at low cost, meet the use requirements of high-grade roads above a second-grade road, especially on the road surface layer, fully utilize gravel resources in the asphalt mixture, and is worthy of wide popularization and use.
Description
Technical Field
The invention belongs to the field of road engineering construction, and particularly relates to a gravel asphalt mixture and a preparation method thereof.
Background
In recent years, with the continuous improvement and development of road construction, the traditional road materials such as basalt and limestone are gradually deficient, the mode of taking the materials of the mountain-opening stone chips is not favorable for ecological balance, the acquisition of the traditional road raw materials is limited by regions, and the road engineering construction cost is greatly improved. Gravel is a sediment formed by long-term scouring, is an acid aggregate, is different from granite (acid aggregate), has complex gravel mineral composition (the composition of the gravel mineral in the same area is different), has smooth surface and poor adhesion with asphalt, and has the adhesion grade of 2-3 which is not satisfied with the specification of the highway engineering aggregate test regulation (JTG E42-2005) and is greater than 4. Gravel resources are mostly distributed in regions such as Xinjiang, Qinghai and Tibet, and the regions adopt the crushed stones of basalt and limestone as the materials of the pavement surface, so that the transport distance is long and the manufacturing cost is too high.
For gravel, it is currently used mostly for the base or sub-base layer, while the use of the top layer is relatively rare. When the gravel asphalt mixture is used as a surface layer, the addition of the asphalt anti-stripping agent is required, and the standard requirement can be met after the addition, but the construction cost is greatly improved, so that the gravel asphalt mixture is rarely applied to the surface layer.
For steel slag, the waste is generated in the steel making process, the waste can cause environmental pollution, the prior document adopts the steel slag as coarse aggregate to be designed as asphalt mixture, the design method has great demand on the amount of the steel slag, and the method is not economical for areas lacking the steel slag.
Disclosure of Invention
The invention provides a gravel asphalt mixture and a preparation method thereof, the prepared gravel asphalt mixture has low cost, excellent mechanical property and better water stability, and the utilization rate of the gravel asphalt mixture and steel slag is improved and the pollution of the steel slag to the environment is reduced by utilizing the gravel asphalt mixture on a surface layer.
In order to achieve the aim, the invention provides a gravel asphalt mixture which is composed of a gravel mixture and asphalt according to the oil-stone ratio of 4-5%;
the gravel mixture is composed of the following aggregates according to the mixing proportion:
45-51% of gravel coarse aggregate, 45-51% of fine aggregate, 1.6-2.4% of limestone mineral powder, 0.8-1.2% of steel slag and 0.8-1.2% of cement, wherein the sum of the mixing proportion of the aggregates of all grades is 100%;
furthermore, the steel slag is micro powder, and the particle size of the steel slag is less than 0.15 mm.
Further, the fine aggregate is prepared by mixing the following components in percentage by mass: mechanism sand =1:1-1:1.5 composition.
Further, the steel slag comprises tricalcium silicate, dicalcium silicate, RO phase, dicalcium ferrite and free calcium oxide.
Further, the gravel comprises silicalite, vein quartz, quartz sandstone, siltstone, fracture rock.
The invention also provides a preparation method of the gravel asphalt mixture, which comprises the following steps:
(1) preparing raw materials according to the following proportion:
preparing the gravel mixture and the asphalt according to the oil-stone ratio of 4-5%;
wherein, the gravel mixture is composed of the following aggregates according to the mixing proportion:
45-51% of gravel coarse aggregate, 45-51% of fine aggregate, 1.6-2.4% of limestone mineral powder, 0.8-1.2% of steel slag and 0.8-1.2% of cement, wherein the sum of the mixing proportion of the aggregates of all grades is 100%;
(2) drying and grinding the steel slag into steel slag micro powder, mixing the steel slag micro powder with cement and limestone mineral powder together, uniformly stirring the mixture to prepare a filler, and preheating the filler at 160-180 ℃ for later use;
(3) and (3) stirring the prepared gravel coarse aggregate and the prepared fine aggregate at the temperature of 160-180 ℃, adding the filler in the step (2), continuously stirring, adding the prepared asphalt after uniformly stirring, and finally preparing the gravel asphalt mixture.
The invention has the following beneficial effects:
according to the invention, the industrial waste steel slag is used as one of the fillers and is compounded with the cement and the limestone mineral powder, so that the water stability of the gravel asphalt mixture can be effectively improved, and the gravel asphalt mixture can be popularized and used as a material of a high-grade road surface layer above a second-grade road. The technology can effectively recycle the industrial waste steel slag, promote the use of gravel resources on the surface layer of the asphalt pavement and relieve the problem of the shortage of road raw materials.
Detailed Description
The present invention will be further explained and illustrated with reference to the following embodiments, but the present invention is not limited thereto.
Example 1
(1) Preparing the following raw materials in parts by mass:
45% of coarse aggregate, 51% of fine aggregate, 1.6% of limestone mineral powder, 1.2% of steel slag, 1.2% of cement and 4% of oilstone; the fine aggregate is prepared from the following components in percentage by mass: machine-made sand =1: 1;
the steel slag comprises tricalcium silicate, dicalcium silicate, RO phase, dicalcium ferrite and free calcium oxide. The gravel comprises silicalite, vein quartz, quartz sandstone, siltstone slate, siltstone and fracture rock.
The asphalt adopts No. 90 matrix road petroleum asphalt, and the type of the asphalt mixture to be prepared is AC-16. The coarse aggregate is broken gravel, the fine aggregate adopts broken gravel and machine-made sand, and various technical indexes of limestone mineral powder, steel slag and cement meet the related requirements on fillers in technical Specification for construction of asphalt road surfaces of highways (JTGF 40-2004).
(2) Drying and grinding the steel slag into steel slag micro powder with the particle size of 0.15mm, mixing the steel slag micro powder with cement and limestone mineral powder together, uniformly stirring the mixture to prepare a filler, and preheating the filler at the temperature of 160-180 ℃ for later use;
(3) and (3) according to the test procedures of asphalt and asphalt mixtures for highway engineering, stirring the prepared gravel coarse aggregate and gravel fine aggregate at the temperature of 160-180 ℃, then adding the filler prepared in the step (2) for continuous stirring, and after the mixture is uniformly stirred, adding the prepared asphalt to prepare the gravel asphalt mixture.
Example 2
(1) Preparing the following raw materials in parts by mass:
48% of coarse aggregate, 48% of fine aggregate, 2% of limestone mineral powder, 1% of steel slag, 1% of cement and 4.5% of oilstone; the fine aggregate is prepared from the following components in percentage by mass: machine-made sand =1: 1.25;
the steel slag comprises tricalcium silicate, dicalcium silicate, RO phase, dicalcium ferrite and free calcium oxide. The gravel comprises silicalite, vein quartz, quartz sandstone, siltstone slate, siltstone and fracture rock.
The asphalt adopts No. 90 matrix road petroleum asphalt, and the type of the asphalt mixture to be prepared is AC-16. The coarse aggregate is broken gravel, the fine aggregate adopts broken gravel and machine-made sand, and various technical indexes of limestone mineral powder, steel slag and cement meet the related requirements on fillers in technical Specification for construction of asphalt road surfaces of highways (JTGF 40-2004).
(2) Drying and grinding the steel slag into steel slag micro powder with the particle size of 0.1mm, mixing the steel slag micro powder with cement and limestone mineral powder together, uniformly stirring the mixture to prepare a filler, and preheating the filler at the temperature of 160-180 ℃ for later use;
(3) and (3) according to the test procedures of asphalt and asphalt mixtures for highway engineering, stirring the prepared gravel coarse aggregate and gravel fine aggregate at the temperature of 160-180 ℃, then adding the filler prepared in the step (2) for continuous stirring, and after the mixture is uniformly stirred, adding the prepared asphalt to prepare the gravel asphalt mixture.
Example 3
(1) Preparing the following raw materials in parts by mass:
51% of coarse aggregate, 45% of fine aggregate, 2.4% of limestone mineral powder, 0.8% of steel slag, 0.8% of cement and 5% of oilstone; the fine aggregate is prepared from the following components in percentage by mass: machine-made sand =1: 1.5;
the steel slag comprises tricalcium silicate, dicalcium silicate, RO phase, dicalcium ferrite and free calcium oxide. The gravel comprises silicalite, vein quartz, quartz sandstone, siltstone slate, siltstone and fracture rock.
The asphalt adopts No. 90 matrix road petroleum asphalt, and the type of the asphalt mixture to be prepared is AC-16. The coarse aggregate is broken gravel, the fine aggregate adopts broken gravel and machine-made sand, and various technical indexes of limestone mineral powder, steel slag and cement meet the related requirements on fillers in technical Specification for construction of asphalt road surfaces of highways (JTGF 40-2004).
(2) Drying and grinding the steel slag into steel slag micro powder with the particle size of 0.5mm, mixing the steel slag micro powder with cement and limestone mineral powder together, uniformly stirring the mixture to prepare a filler, and preheating the filler at the temperature of 160-180 ℃ for later use;
(3) and (3) according to the test procedures of asphalt and asphalt mixtures for highway engineering, stirring the prepared gravel coarse aggregate and gravel fine aggregate at the temperature of 160-180 ℃, then adding the filler prepared in the step (2) for continuous stirring, and after the mixture is uniformly stirred, adding the prepared asphalt to prepare the gravel asphalt mixture.
Comparative example 1
The raw materials of 48 percent of coarse aggregate, 48 percent of fine aggregate, 2 percent of limestone mineral powder, 1 percent of steel slag, 1 percent of cement and 4.5 percent of oilstone are replaced by 48 percent of coarse aggregate, 48 percent of fine aggregate, 3 percent of limestone mineral powder, 1 percent of cement and 4.5 percent of oilstone, and other steps are the same as those in the embodiment 2.
Comparative example 2
The raw materials of 48 percent of coarse aggregate, 48 percent of fine aggregate, 2 percent of limestone mineral powder, 1 percent of steel slag, 1 percent of cement and 4.5 percent of oilstone are replaced by 48 percent of coarse aggregate, 48 percent of fine aggregate, 2.5 percent of limestone mineral powder, 0.5 percent of steel slag, 1 percent of cement and 4.5 percent of oilstone, and other steps are the same as those in the example 2.
Comparative example 3
The raw materials of 48 percent of coarse aggregate, 48 percent of fine aggregate, 2 percent of limestone mineral powder, 1 percent of steel slag, 1 percent of cement and 4.5 percent of oilstone are replaced by 48 percent of coarse aggregate, 48 percent of fine aggregate, 1 percent of limestone mineral powder, 2 percent of steel slag, 1 percent of cement and 4.5 percent of oilstone, and other steps are the same as those in the embodiment 2.
Comparative example 4
The raw materials of 48 percent of coarse aggregate, 48 percent of fine aggregate, 2 percent of limestone mineral powder, 1 percent of steel slag, 1 percent of cement and 4.5 percent of oil stone are replaced by 48 percent of coarse aggregate, 48 percent of fine aggregate, 4 percent of coal gangue powder and 4.5 percent of oil stone, and other steps are the same as those in the embodiment 2.
Comparative example 5
The raw materials of 48 percent of coarse aggregate, 48 percent of fine aggregate, 2 percent of limestone mineral powder, 1 percent of steel slag, 1 percent of cement and 4.5 percent of oilstone are replaced by 48 percent of coarse aggregate, 48 percent of fine aggregate, 4 percent of limestone mineral powder and 0.4 percent of AMR liquid anti-stripping agent, and the oilstone ratio is 4.5 percent, and other steps are consistent with the step of the embodiment 2.
The gravel asphalt mixtures obtained in examples 1 to 3 and comparative examples 1 to 5 were applied to a road surface layer according to the test procedures for road engineering asphalt and asphalt mixtures, and the test results are shown in tables 1 and 2.
TABLE 1 Performance index of gravel asphalt mixtures of examples 1 to 3
TABLE 2 Performance index for comparative examples 1-5 gravel asphalt mixtures
Table 3 cost analysis of example 2 and comparative example 5
The materials are 118 yuan/ton limestone, 80 yuan/ton steel slag, 400 yuan/ton Portland cement and 900 yuan/barrel (50 kg) AMR anti-stripping agent, and the mass of a single test piece is 1250 g.
It can be seen from the above examples that the steel slag is used as a filler to compound limestone mineral powder and cement, and the prepared gravel asphalt mixture meets and even exceeds the water stability requirement of a high-grade highway pavement layer material above a highway asphalt pavement construction technical specification (JTGF40-2004) second-grade highway. Compared with the gravel asphalt mixture added with the anti-stripping agent, the gravel asphalt mixture prepared by the invention has huge economic benefit, and the gravel asphalt mixture is applied to high-grade asphalt pavements at lower cost, so that the gravel asphalt mixture is worthy of popularization.
Claims (6)
1. A gravel asphalt mixture is characterized in that: consists of a gravel mixture and asphalt according to the oil-stone ratio of 4-5 percent;
the gravel mixture is composed of the following aggregates according to the mixing proportion:
45-51% of gravel coarse aggregate, 45-51% of fine aggregate, 1.6-2.4% of limestone mineral powder, 0.8-1.2% of steel slag, 0.8-1.2% of cement and the sum of the blending proportion of the aggregates of all grades is 100%.
2. The gravel asphalt mixture of claim 1, wherein: the steel slag is micro powder with the grain size less than 0.15 mm.
3. The gravel asphalt mixture of claim 1, wherein: the fine aggregate is prepared from the following components in percentage by mass: mechanism sand =1:1-1:1.5 composition.
4. The gravel asphalt mixture of claim 1, wherein: the steel slag comprises tricalcium silicate, dicalcium silicate, RO phase, dicalcium ferrite and free calcium oxide.
5. The gravel asphalt mixture of claim 1, wherein: the gravel comprises silicalite, vein quartz, quartz sandstone, siltstone slate, siltstone and fracture rock.
6. A preparation method of a gravel asphalt mixture is characterized by comprising the following steps: the method comprises the following steps:
(1) preparing raw materials according to the following proportion:
preparing the gravel mixture and the asphalt according to the oil-stone ratio of 4-5%;
wherein, the gravel mixture is composed of the following aggregates according to the mixing proportion:
45-51% of gravel coarse aggregate, 45-51% of fine aggregate, 1.6-2.4% of limestone mineral powder, 0.8-1.2% of steel slag and 0.8-1.2% of cement, wherein the sum of the mixing proportion of the aggregates of all grades is 100%;
(2) placing the steel slag in an oven to be ground into steel slag micro powder, mixing the steel slag micro powder with cement and limestone mineral powder, uniformly stirring the mixture to prepare a filler, and then preheating the filler at 160-180 ℃ for later use;
(3) and (3) stirring the gravel coarse aggregate and the fine aggregate at the temperature of 160-180 ℃, then adding the filler prepared in the step (2) for continuous stirring, and after uniformly stirring, adding the road asphalt with the oil-stone ratio to finally prepare the gravel asphalt mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111037762.5A CN113620654B (en) | 2021-09-06 | 2021-09-06 | Gravel asphalt mixture and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111037762.5A CN113620654B (en) | 2021-09-06 | 2021-09-06 | Gravel asphalt mixture and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN113620654A true CN113620654A (en) | 2021-11-09 |
| CN113620654B CN113620654B (en) | 2022-09-13 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001038441A1 (en) * | 1999-11-25 | 2001-05-31 | Company Eletric Comercio Representacoes E Servicos Ltda. | Asphaltic concrete composition |
| CN101973726A (en) * | 2010-09-25 | 2011-02-16 | 钱卫胜 | Porous pavement partially taking steel slag as coarse aggregate |
| CN105174823A (en) * | 2014-06-18 | 2015-12-23 | 上海宝冶钢渣综合开发实业有限公司 | Asphalt concrete packing and asphalt concrete |
| CN108358487A (en) * | 2018-03-20 | 2018-08-03 | 和县祥龙沥青混凝土有限公司 | A kind of bituminous concrete filler and bituminous concrete |
| CN111548076A (en) * | 2020-06-23 | 2020-08-18 | 杨琼 | Steel slag asphalt concrete with good anti-rutting performance and preparation method thereof |
-
2021
- 2021-09-06 CN CN202111037762.5A patent/CN113620654B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001038441A1 (en) * | 1999-11-25 | 2001-05-31 | Company Eletric Comercio Representacoes E Servicos Ltda. | Asphaltic concrete composition |
| CN101973726A (en) * | 2010-09-25 | 2011-02-16 | 钱卫胜 | Porous pavement partially taking steel slag as coarse aggregate |
| CN105174823A (en) * | 2014-06-18 | 2015-12-23 | 上海宝冶钢渣综合开发实业有限公司 | Asphalt concrete packing and asphalt concrete |
| CN108358487A (en) * | 2018-03-20 | 2018-08-03 | 和县祥龙沥青混凝土有限公司 | A kind of bituminous concrete filler and bituminous concrete |
| CN111548076A (en) * | 2020-06-23 | 2020-08-18 | 杨琼 | Steel slag asphalt concrete with good anti-rutting performance and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘广兴: "公路工程试验室对路面施工的质量控制", 《交通世界(建养.机械)》 * |
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| CN113620654B (en) | 2022-09-13 |
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