CN1183055C - Patching material in ultra-tast for hard road - Google Patents
Patching material in ultra-tast for hard road Download PDFInfo
- Publication number
- CN1183055C CN1183055C CNB021374775A CN02137477A CN1183055C CN 1183055 C CN1183055 C CN 1183055C CN B021374775 A CNB021374775 A CN B021374775A CN 02137477 A CN02137477 A CN 02137477A CN 1183055 C CN1183055 C CN 1183055C
- Authority
- CN
- China
- Prior art keywords
- patching material
- ultra
- flyash
- tast
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 title claims abstract description 33
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 13
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910021538 borax Inorganic materials 0.000 claims abstract description 11
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 11
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 235000019830 sodium polyphosphate Nutrition 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 239000002956 ash Substances 0.000 claims description 2
- 238000001354 calcination Methods 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000004567 concrete Substances 0.000 abstract description 12
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000002742 anti-folding effect Effects 0.000 description 5
- 230000015271 coagulation Effects 0.000 description 5
- 238000005345 coagulation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011433 polymer cement mortar Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002023 wood Substances 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/105—Magnesium oxide or magnesium carbonate 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
- 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
- C04B28/34—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 containing cold phosphate binders
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to ultra-fast patching material for hard roads. The present invention is prepared from magnesium oxide, fly ash, ammonium di-hydrogen phosphate, borax, etc. according to a certain weight ratio. The present invention has the characteristics of fast condensation rigidification, high adhesive intensity, high volume stability, good adaptability with material performance, etc. The present invention has the advantages of convenient preparation and use, and can be widely used for fast concrete patching of engineering such as highways, airport runways, bridge beams, ports, docks, etc.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of patching material in ultra-tast for hard road, the concrete that can be widely used in engineerings such as road, highway, airfield runway, bridge, harbour and harbour is rushed to repair fast.
Technical background
Since the eighties, along with China's rapid economic development, fundamental construction particularly is that the infrastructure construction scale of main raw enlarges day by day with Steel Concrete.Concrete generation destructive phenomenon is on the increase in the civil engineering works such as discovered in recent years road, bridge floor, harbour, harbour, airport, building, and it is huge causing direct and indirect financial loss.Its reason become harsh except the environment for use condition and during design concrete durability bad, factor such as not enough with construction management, that blindly pursuit progress, quality be not tight to check on also has much relations.Although, must in time repair to them for functions of use and the assurance safety in utilization of recovering these concrete structures.
Traditional cement concrete patching material mainly contains three classes: the first kind is the Portland cement sill, and just intensity is higher; Second class is a macromolecule polymer material, as the polymer mortar or the polymer cement mortar of Resins, epoxy, urethane, acrylic acid and the preparation of various latex; The 3rd class is a special cement, mainly contains super early-strong-fast-hard cement, high-alumina cement and a small amount of other chemical cement based on sulplo-aluminate.At present, this three classes material respectively has relative merits.Though first kind material is cheap, be complementary with material property such as the thermal expansivity and the Young's modulus etc. of old concrete, there is cohesive strength low, setting and harden waits shortcoming slowly; The second class material is just in time opposite, though fast solidifying, the cohesive strength height, the price height does not match with material property such as the thermal expansivity and the Young's modulus etc. of old concrete, and is easily aging; Though the 3rd class material such as aluminosulfate cement and high-alumina cement setting and harden time, price and performance are between preceding two classes, cohesive strength is still not high, and volume stability is not so good.
Summary of the invention
The object of the present invention is to provide a kind of fast solidifying, volume stability is good and the cohesive strength height of cement concrete, with the patching material in ultra-tast for hard road of material property coupling.
The patching material in ultra-tast for hard road that the present invention proposes is by flyash, magnesium oxide, ammonium di-hydrogen phosphate, borax and sodium polyphosphate is formulated partially, is solid, powdery, and the each component mixture ratio by weight percent is as follows:
Magnesium oxide 20～80%
Flyash 0～50%
Ammonium di-hydrogen phosphate 5～25%
Borax 0～20%
Inclined to one side sodium polyphosphate 0～15%
Total amount satisfies 100%.
Its more excellent proportioning is as follows:
Magnesium oxide 40～70%
Flyash 10～30%
Ammonium di-hydrogen phosphate 10～25%
Borax 3～15%
Inclined to one side sodium polyphosphate 1～5%
Total amount satisfies 100%.
In the above-mentioned component,
(1) magnesium oxide, requiring its calcining temperature is 1200～2000 ℃, and proportion is 3.3～3.5, and MgO content is greater than 80%, and specific surface area is 150～400m
2/ kg;
(2) flyash can adopt low calcium fly ash, can reach the above quality requirements of secondary ash;
(3) ammonium di-hydrogen phosphate, available technical pure powder-like product, content is greater than 90%;
(4) borax, available technical pure powder-like product, content is greater than 90%;
(5) inclined to one side sodium polyphosphate, available technical pure powder-like product, content is greater than 90%.
The preparation method of the patching material that the present invention proposes is as follows: takes by weighing each component starting material by weight ratio, in ball mill, mixes, and mixing time 10-40 minute, promptly obtain product of the present invention, be solid, powdery.Product deposit require airtight, protection against the tide.
Patching material of the present invention has the following advantages and effect:
1. intensity height, development are fast, and for example 1 hour anti-folding of 4 * 4 * 16cm mortar and ultimate compression strength are respectively greater than 6MPa and 50MPa, and 7 days respectively greater than 8MPa and 65MPa;
2. cohesive strength height, 3 hours and 3 days cohesive strengths are respectively greater than 4MPa and 7.5MPa;
3. time of coagulation, adjustable extent was big, was easy to as required adjust in 2～90 minutes;
4. be complementary with cement concrete wood property such as thermal expansivity, Young's modulus etc.;
5. the use of fast quick-recovery structure, the operation that can in 1 hour, recover road, airfield runway etc.;
6. volume stability is good, drying shrinkage is very little;
7. have very excellent frost resistance and deicer-scaling resistance performance, the performance of abrasion resistance and the not corrosion of protection reinforcing bar is also fine;
8. can be at low temperatures normal reparation construction;
9. at high temperature (as 600 ℃) still can keep very high strength and stable performance;
10. the color of patching material can be adjusted as requested.
The using method of patching material of the present invention:
1. the same with ordinary Portland cement, add by a certain percentage and can use after the water stirring finishes;
2. before the construction, only need the concrete layer that damages is removed and cleaned out and can smear this patching material, it is moistening not need to spread water on the surface;
When 3. smearing, should operate rapidly, and in time clean and stir apparatus;
4. after having constructed, material of the present invention does not need special curing as spreading water and heating etc., according to requirement of engineering, can recover the functions of use of works in 1～5 hour.
Embodiment
The invention is further illustrated by the following examples.
Embodiment 1:
The patching material proportioning is (weight percent):
(specific surface area is 200m to magnesium oxide
2/ kg) 70.25%
Ammonium di-hydrogen phosphate 22.75%
Borax 5%
Flyash 0%
Inclined to one side sodium polyphosphate 2%
When patching material: water: during sand=1: 0.17: 1,1 hour anti-folding and ultimate compression strength are respectively 7.8MPa and 58.7MPa, 7 days difference 10.8MPa and 77.6MPa, about 20 minutes of time of coagulation.
Embodiment 2:
The patching material proportioning is (weight percent):
(specific surface area is 200m to magnesium oxide
2/ kg) 57%
Ammonium di-hydrogen phosphate 19%
Borax 4%
Flyash 20%
Inclined to one side sodium polyphosphate 0%
When patching material: water: during sand=1: 0.13: 1,1 hour anti-folding and ultimate compression strength are respectively 7.7MPa and 60.5MPa, 7 days difference 10.2MPa and 78.4MPa, about 24 minutes of time of coagulation.
Embodiment 3:
The patching material proportioning is (weight percent):
(specific surface area is 200m to magnesium oxide
2/ kg) 49.1%
Ammonium di-hydrogen phosphate 16.4%
Borax 3.5%
Flyash 30%
Inclined to one side sodium polyphosphate 1%
When patching material: water: during sand=1: 0.12: 1,1 hour anti-folding and ultimate compression strength are respectively 6.6MPa and 52.3MPa, 7 days difference 10.2MPa and 74.6MPa, about 22 minutes of time of coagulation.
Embodiment 4:
The patching material proportioning is (weight percent):
(specific surface area is 200m to magnesium oxide
2/ kg) 50%
Ammonium di-hydrogen phosphate 25%
Borax 2%
Flyash 18%
Inclined to one side sodium polyphosphate 5%
When patching material: water: during sand=1: 0.17: 1,1 hour anti-folding and ultimate compression strength are respectively 7.2MPa and 56.2MPa, 7 days difference 9.9MPa and 71.4MPa, about 30 minutes of time of coagulation.
Claims (4)
1, a kind of patching material in ultra-tast for hard road is characterized in that by flyash, magnesium oxide, ammonium di-hydrogen phosphate, borax and sodium polyphosphate is formulated partially, is solid, powdery, and the each component mixture ratio by weight percent is as follows:
Magnesium oxide 40～70%
Flyash 10～30%
Ammonium di-hydrogen phosphate 10～25%
Borax 3～10%
Inclined to one side sodium polyphosphate 1～5%
Total amount satisfies 100%.
2, patching material according to claim 1 is characterized in that said magnesian calcining temperature is 1200-2000 ℃, and proportion is 3.3-3.5, and MgO content is greater than 80%, and specific surface area is 150-400m
2/ kg.
3, patching material according to claim 1 is characterized in that said flyash is low calcium fly ash, and quality reaches more than the secondary ash.
4, a kind of preparation method of patching material in ultra-tast for hard road as claimed in claim 1 is characterized in that taking by weighing by weight ratio each component starting material, mixes mixing time 10-40 minute in ball mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021374775A CN1183055C (en) | 2002-10-16 | 2002-10-16 | Patching material in ultra-tast for hard road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021374775A CN1183055C (en) | 2002-10-16 | 2002-10-16 | Patching material in ultra-tast for hard road |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1415573A CN1415573A (en) | 2003-05-07 |
| CN1183055C true CN1183055C (en) | 2005-01-05 |
Family
ID=4749009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021374775A Expired - Lifetime CN1183055C (en) | 2002-10-16 | 2002-10-16 | Patching material in ultra-tast for hard road |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1183055C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803655A (en) * | 2015-04-16 | 2015-07-29 | 同济大学 | Method for producing cement-based composite material for injection reinforcement from waste incineration fly ash |
| CN104909709B (en) * | 2015-05-26 | 2017-01-25 | 武汉市市政建设集团有限公司 | Green rapid-hardening early-strength magnesium phosphate-based healant and preparation method thereof |
| CN105174879A (en) * | 2015-07-29 | 2015-12-23 | 卓达新材料科技集团有限公司 | Indoor high-intensity rapid-setting repairing material and preparation method therefor |
| CN105601248A (en) * | 2015-12-24 | 2016-05-25 | 杭州修路人科技有限公司 | Material for assembled simply supported hollow plate bridge hinge joint and application method of material |
| CN106336186A (en) * | 2016-03-04 | 2017-01-18 | 赵国升 | Quick-dry volatile organic compound (VOC) gas leakage stopping inorganic material coating |
| CN105837159A (en) * | 2016-03-18 | 2016-08-10 | 派丽(上海)管理有限公司 | High-performance neutral tile bonding material |
| CN106966687B (en) * | 2017-04-07 | 2020-07-24 | 俞家欢 | Fluidity-free rapid-setting strong-binding-force phosphate cement repairing material and preparation method thereof |
| CN107162562A (en) * | 2017-06-22 | 2017-09-15 | 同济大学 | A kind of subway tunnel concrete rapid restoring material and its preparation method and application |
| CN108863292A (en) * | 2018-07-19 | 2018-11-23 | 贵州磷镁材料有限公司 | A kind of repairing concrete crack material and its construction technology based on phosphorus magnesium material |
| CN109020468B (en) * | 2018-09-28 | 2021-02-02 | 俞家欢 | Anti-deicing salt cement-based ditch repairing agent |
| CN111056816B (en) * | 2019-12-30 | 2022-04-01 | 杭州修路人科技股份有限公司 | Pavement protective cover material and preparation method thereof |
| CN113968719A (en) * | 2021-12-02 | 2022-01-25 | 中国三冶集团有限公司 | Composite repairing material suitable for rapidly repairing road surface at negative temperature |
| CN114507060B (en) * | 2021-12-27 | 2023-05-16 | 山东坊能新动能科学研究院有限公司 | High-strength building material with controllable condensation for alpine region and preparation method |
-
2002
- 2002-10-16 CN CNB021374775A patent/CN1183055C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1415573A (en) | 2003-05-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20030507 Assignee: HANGZHOU ROADMENDER TECHNOLOGY Co.,Ltd. Assignor: Tongji University Contract record no.: 2015330000248 Denomination of invention: Patching material in ultra-tast for hard road Granted publication date: 20050105 License type: Exclusive License Record date: 20151030 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20160127 Address after: 310000 No. 924-5, Xixi Road, Hangzhou, Zhejiang Patentee after: HANGZHOU ROADMENDER TECHNOLOGY Co.,Ltd. Address before: 1239 Siping Road, Shanghai, No. 200092 Patentee before: Tongji University |
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| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 310023 No. 924-5, Xixi Road, Hangzhou, Zhejiang Patentee after: HANGZHOU ROADMENDER TECHNOLOGY CO.,LTD. Address before: No. 924-5, Xixi Road, Hangzhou Patentee before: HANGZHOU ROADMENDER TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20050105 |
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| CX01 | Expiry of patent term |