CN105862560B - The method repaired at the Bridge back wall of environmentally safe road pavement - Google Patents
The method repaired at the Bridge back wall of environmentally safe road pavement Download PDFInfo
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- CN105862560B CN105862560B CN201610199179.7A CN201610199179A CN105862560B CN 105862560 B CN105862560 B CN 105862560B CN 201610199179 A CN201610199179 A CN 201610199179A CN 105862560 B CN105862560 B CN 105862560B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 49
- 239000002689 soil Substances 0.000 claims abstract description 39
- 238000007569 slipcasting Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 230000001771 impaired effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 5
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 claims 1
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 230000008961 swelling Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/10—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for raising or levelling sunken paving; for filling voids under paving; for introducing material into substructure
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of method repaired at Bridge back wall of environmentally safe road pavement, its step includes：Position of being come to nothing in the attachment strap of impaired bridge is detected using detection radar, the position of injected hole one and drilling are marked on attachment strap surface, injected hole one arranged as deep as hard stratum, injected hole one with array way, and the center spacing of adjacent injected hole one is 10 20cm and makes to come to nothing and falls into array range；Each injected hole two penetrates the Soft Soil Layer and intersected with injected hole one, and the check valve of exhaust is provided with each both ends of injected hole two；Injected hole one is carried out slip casting and using the detection immediately of three-dimensional detection radar come to nothing and each injected hole one, injected hole two inside filled therewith situation, when slurry comes to nothing full of this and stops slip casting when each injected hole one, injected hole two；Slip casting reuses detection radar to filling location detection check after stopping, to not re-started drilling, slip casting at filled therewith；It this method solve the problem of hard stratum is with Soft Soil Layer differential settling velocity.
Description
Technical field
, can be to being repaiied at Bridge back wall the present invention relates to a kind of method repaired at Bridge back wall of road pavement
It is multiple, eliminate vehicle bump at bridge ends.
Background technology
With being continuously increased for highway in China and railway mileage, the shared proportion of the highway such as bridge, culvert construction is increasingly
Greatly, generally existing " bumping at bridge-head " phenomenon at the back filling behind abutment of many this kind of constructions, so-called " bumping at bridge-head " refers to bridge, culvert
Deng construction in itself and the platform back of the body continues to settle due to the effect of driving load and deadweight, the back of the body sedimentation of tectonic subsidence and platform it is inconsistent and
Caused differential settlement, the platform back of the body and the road surface of construction junction is caused step occur, the vehicle run at high speed is carried on the back back by platform
The place of filling out produces the phenomenon for jump of jolting.
The vertical of above-mentioned phenomenon occur wants reason to be, general bridge floor is higher than road surface and by bridge pier and roadbed（Hard stratum）
It is connected, therefore is connected between the bridge floor with difference in height and road surface by attachment strap, in order to support the attachment strap to need below attachment strap
Existing roadbed on heap set the artificial soil horizon of compacting（Soft Soil Layer）, the artificial soil horizon is to be formed in the later stage therefore to compare former roadbed（Firmly
Soil layer）Softer, because natural subsidence acts on during later stage operation, the height on its bridge floor and road surface can all decline bridge,
But the infall process of above-mentioned Soft Soil Layer is than hard stratum faster, therefore there is difference in height between bridge floor and attachment strap and cause bumping at bridge-head
Phenomenon；It can be formed between Soft Soil Layer and attachment strap simultaneously and come to nothing and make to misplace between bridge floor and attachment strap, so as to exacerbate bumping at bridge-head
Phenomenon.
China Patent No. proposes for CN102051861 document and is injected into coming to nothing for attachment strap bottom using high polymer material
Inside eliminate the attachment strap for depression of coming to nothing, lifted to eliminate vehicle bump at bridge ends, but this method fails to causing bumping at bridge-head
The differential settling velocity of the different soil of phenomenon takes measures, therefore fails fundamentally solve the problems, such as bumping at bridge-head.
The content of the invention
, can the technical problem to be solved in the present invention is to provide a kind of method repaired at Bridge back wall of road pavement
Solve the problems, such as hard stratum and Soft Soil Layer differential settling velocity.
In order to solve the above-mentioned technical problem, the invention provides the side repaired at a kind of Bridge back wall of road pavement
Method, it comprises the following steps：
A. position of being come to nothing in the attachment strap of impaired bridge is detected using detection radar, the position come to nothing is gone out in the surface markers of attachment strap
Put and measure this and come to nothing and the depth of hard stratum；
B. the position of injected hole one and drilling are marked on attachment strap surface, injected hole one is as deep as hard stratum, and injected hole one is with battle array
Row mode arranges that making to come to nothing falls into array range；
C. mark the position of injected hole two and drilling in the side of Soft Soil Layer, each injected hole two penetrate the Soft Soil Layer and with note
It is intersecting to starch hole one；
D. slip casting is carried out to injected hole one and detection is come to nothing and each injected hole one, injected hole immediately using three-dimensional detection radar
Filled therewith situation inside two, when slurry comes to nothing full of this and stops slip casting when each injected hole one, injected hole two；
E. slip casting reuses detection radar to filling location detection check after stopping, to not entered again at filled therewith
Row drilling, slip casting；
F. after slip casting terminates 10 minutes, sealing of hole is carried out to each injected hole one, injected hole two.
A diameter of 3-15cm of the injected hole one and injected hole two, the center spacing of adjacent injected hole one is 8-25cm.
The injected hole two is horizontal to penetrate the Soft Soil Layer and perpendicular to attachment strap center line, each injected hole one respectively with lower section of coming to nothing
Multiple injected holes two it is intersecting.
The present invention also provides a kind of reparation slurry, and the slurry is used at the Bridge back wall of above-mentioned road pavement the side repaired
The slip casting process of method.
The slurry is high intensity foam-type resin.
The elative free swelling ratio of the slurry is up to 20:1, it can fill and come to nothing after injecting 3 minutes, injection reaches most after 10 minutes
Whole intensity.
The machine viscosity that goes out of the slurry is 100 ± 45mPa s, and its final strength meets compressive strength >=20MPa, bending strength
≥15MPa。
Relative to prior art, what the present invention had has the technical effect that：
1）The method repaired at the Bridge back wall of the road pavement of the present invention, detected by detection radar with drilling, note
Slurry is combined, and has not only filled up coming to nothing below attachment strap and lifting attachment strap smoothes out end of the bridge, also by intersecting injected hole one and
Injected hole two makes the slurry body after solidification form network structure, attachment strap, Soft Soil Layer and hard stratum is linked into an integrated entity, so that soft
The sinking speed of soil layer and hard stratum is consistent, and the sinking speed of attachment strap will be consistent with hard stratum, prevent Soft Soil Layer with
Formed and come to nothing between attachment strap, so as to avoid bridge floor and attachment strap vehicle bump at bridge ends because of caused by respective differential settling velocity；
2）Come to nothing and form a pulp layer after the slurry curing of position injection, connection attachment strap, lower section lead to above the pulp layer
Cross slurry column to be connected with hard stratum, injected hole one and slurry column diameter are 5-10cm, can be by the fractional load on attachment strap
Hard stratum is transferred directly to by slurry column, so as to reduce the settling amount after Soft Soil Layer is pressurized；Injected hole two and slurry crossbeam
A diameter of 5-10cm, the attachment strap load that part is conducted through Soft Soil Layer can be made to be conducted through slurry crossbeam to slurry column, then through slurry
Material column is conducted to hard stratum, so as to reduce the load conducted through Soft Soil Layer, further reduces the settling amount of Soft Soil Layer；Adjacent note
The center spacing for starching hole one is 10-20cm, can not only make the arrangement of slurry column close but also be beneficial to drill to injected hole one；
3）Injected hole two is horizontal to penetrate the Soft Soil Layer and perpendicular to attachment strap center line, is easy to slurry during drilling and slip casting
Flowing and filling, set multiple injected holes two intersected with injected hole one in the Soft Soil Layer for coming to nothing lower section, can increase weak soil
Layer and the bonding strength between hard stratum, attachment strap, while be also beneficial to the load more through Soft Soil Layer conduction is horizontal by slurry
Beam, slurry column are directly conducted to hard stratum；
4) the water-free high intensity foam-type resin of the slurry, will not produce drying shrinkage phenomenon, can dense packing effect come to nothing；Slurry
There are pliability and elasticity after material solidification, it is not easy to ftracture, while the resin material has good impermeability, can prevent
Rainwater infiltration enters in attachment strap, and fracture and seam have good sealing function；
5）The slurry can fill after injecting 3 minutes to come to nothing, and injection reaches its final strength, hardening time after 10 minutes
It is short, reduce engineering time and the influence to traffic, foaming shape solid is formed after slurry curing, its density is the 20% of cement mortar,
Structure will not be produced compared with big load；
6）The elative free swelling ratio of the slurry is up to 20:1, can Fast Filling come to nothing, be further compacted in expansion process
The soil layer for surrounding of coming to nothing；
7）Stability of Slurry after solidification is strong, non-aging deformation, and its durability is up to century-old；
8）After slurry curing, each chemical composition will not dissolve or decompose and is lost in in rainwater, environmentally safe；
9）Attachment strap structure after slurry reparation, later stage without periodic maintenance, maintenance, reduce maintenance cost.
Brief description of the drawings
Innovative principle for the clear explanation present invention and its technical advantage compared to existing product, below by way of attached
Figure illustrates possible embodiment by the non-limiting examples of the application principle.In figure：
Fig. 1 is the sectional drawing that bridge is damaged in the present invention；
Fig. 2 is the sectional drawing of the bridge after being drilled in the present invention；
Fig. 3 is the top view for the attachment strap that injected hole one is provided with the present invention；
Fig. 4 is the left view of the slurry body after solidifying in the present invention.
Embodiment
Embodiment 1
As shown in figure 1, impaired bridge generally comprises：To mat formation face 1, attachment strap 2 comes to nothing 3, bridge floor 4, road surface 5, Soft Soil Layer 6,
Hard stratum 7.
Come to nothing and be generally present between attachment strap 2 and Soft Soil Layer 6, as the sedimentation of Soft Soil Layer volume of coming to nothing can gradually increase,
Because Soft Soil Layer 6 is higher by roadbed, it is easy to drill to Soft Soil Layer 6 from side.
As shown in Fig. 1-3, the method repaired at the Bridge back wall of road pavement of the invention comprises the following steps：
（1）3 positions of coming to nothing are damaged in the attachment strap of bridge using three-dimensional detection detections of radar, are gone out in the surface markers of attachment strap 2
Come to nothing 3 position and measure the depth of come to nothing 3 and the hard stratum 7；
（2）Position and the drilling of each injected hole 1, the diameter of injected hole 1 are marked on the surface of attachment strap 2 above 3 of coming to nothing
Arranged for 5-10cm and as deep as hard stratum 7, all injected holes 1 in a manner of square array, the center spacing of adjacent injected hole 1
For 10-20cm and coming to nothing for above-mentioned mark is set 3 to fall into the array range of the injected hole 1；
（3）The position of injected hole 29 and drilling are marked in the side of Soft Soil Layer 6, each injected hole 29 is horizontal to penetrate the weak soil
Layer and intersect at injected hole 1, each injected hole 1 intersects with located at three injected holes 29 to come to nothing below 3, each injected hole
29 perpendicular to attachment strap center line and a diameter of 5-10cm；
（4）Grouting Pipe 11 is installed in the position of each injected hole 1, Grouting Pipe 11 stretches to the bottom of injected hole 1, each
Filling adaptor is installed, debugging grouting equipment simultaneously be connected with filling adaptor, and inspection injecting paste material simultaneously adds slip casting and set in Grouting Pipe 11
In standby, the check valve that can only discharge air is provided with each both ends of injected hole 29；
（5）Slip casting is carried out to injected hole 1 and detects come to nothing 3 and each injected hole 1, note immediately using three-dimensional detection radar
The filled therewith situation inside hole 29 is starched, stops slip casting when slurry comes to nothing 3 and each injected hole 1, injected hole 29 full of this；
（6）Slip casting reused after stopping detection radar detecting in come to nothing 3 and each injected hole 1, injected hole 29 whether
Drilling, slip casting are not also re-started to the position that the above situation be present by filled therewith position；
（7）After waiting 10 minutes, the slurry curing of filling simultaneously reaches final strength, removes check valve and to each injected hole one
8th, injected hole 29 carries out sealing of hole.
Slurry after cured forms slurry body 10 as shown in Figure 4, including multiple rows of by multiple vertical slurry columns
101st, horizontal slurry crossbeam 103 forms network structure and full of come to nothing 3 pulp layer 102, the slurry body 10 and attachment strap 2,
Soft Soil Layer 6 and hard stratum 7 are fixedly connected.
Embodiment 2
Heretofore described slurry uses a kind of high intensity foam-type resin, its model SZ3, by the resin during slip casting
Add in above-mentioned grouting equipment, the resin viscosity flowed out from the grouting equipment（Go out machine viscosity）For 100 ± 45mPa s, the tree
Fat slurry volume in flowing constantly increases, and its penetrating power is strong, comes to nothing in position or entrance gap, is pressing suitable for quick arrival
Power effect is lower to be suitable to be expelled from ponding, can be filled and be come to nothing after above-mentioned slurry injects 3 minutes, injection reaches it most after 10 minutes
Whole intensity, its compressive strength >=20MPa, bending strength >=15MPa.
The slurry has the characteristics that：
（1）The slurry is not aqueous, will not produce drying shrinkage phenomenon, can dense packing effect come to nothing；There is pliability after slurry curing
With elasticity, it is not easy to ftracture, while the resin material has good impermeability, rainwater infiltration can be prevented to enter weak soil
Layer, fracture and seam have good sealing function；
（2）Foaming shape solid is formed after slurry curing, its density is the 20% of cement mortar, will not produce larger load to structure
Lotus；
（3）The elative free swelling ratio of the slurry is up to 20:1, can Fast Filling come to nothing, be further compacted in expansion process
The soil layer for surrounding of coming to nothing；
（4）Stability of Slurry after solidification is strong, non-aging deformation, and its durability is up to century-old；
（5）After slurry curing, each chemical composition will not dissolve or decompose and is lost in in rainwater, environmentally safe；
（6）Attachment strap structure after slurry reparation, later stage without periodic maintenance, maintenance, reduce maintenance cost.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention
The restriction of embodiment.For those of ordinary skill in the field, it can also be made on the basis of the above description
Its various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
Among the obvious changes or variations that bright spirit is extended out is still in protection scope of the present invention.
Claims (1)
1. a kind of method repaired at Bridge back wall of road pavement, it is characterised in that comprise the following steps：
A. detected using detection radar and come to nothing in the attachment strap of impaired bridge（3）Position, in attachment strap（2）Surface markers go out to come to nothing
（3）Position and measure this and come to nothing（3）And hard stratum（7）Depth；
B. in attachment strap（2）Surface marks injected hole one（8）Position and drilling, injected hole one is as deep as hard stratum（7）, injected hole one
（8）Arranged with array way, make to come to nothing（3）Fall into array range；
C. in Soft Soil Layer（6）Side mark injected hole two（9）Position and drilling, each injected hole two（9）Penetrate the Soft Soil Layer
And with injected hole one（8）It is intersecting；
D. to injected hole one（8）Carry out slip casting and detection is come to nothing immediately using three-dimensional detection radar（3）And each injected hole one（8）、
Injected hole two（9）Internal filled therewith situation, when slurry comes to nothing full of this（3）And each injected hole one（8）, injected hole two（9）
When stop slip casting；
E. slip casting reuses detection radar to filling location detection check after stopping, to not re-started brill at filled therewith
Hole, slip casting；
F. after slip casting terminates 10 minutes, to each injected hole one（8）, injected hole two（9）Carry out sealing of hole；Attachment strap, Soft Soil Layer and pan soil
Layer links into an integrated entity；
A diameter of 3-15cm of the injected hole one and injected hole two, adjacent injected hole one（8）Center spacing be 8-25cm；
The injected hole two（9）Level penetrates the Soft Soil Layer and perpendicular to attachment strap center line, each injected hole one（8）Respectively with coming to nothing
（3）Multiple injected holes two of lower section（9）It is intersecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199179.7A CN105862560B (en) | 2014-05-26 | 2014-05-26 | The method repaired at the Bridge back wall of environmentally safe road pavement |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610199179.7A CN105862560B (en) | 2014-05-26 | 2014-05-26 | The method repaired at the Bridge back wall of environmentally safe road pavement |
| CN201410223493.5A CN104047235B (en) | 2014-05-26 | 2014-05-26 | The Bridge back wall place of road pavement carries out the method for repairing |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410223493.5A Division CN104047235B (en) | 2014-05-26 | 2014-05-26 | The Bridge back wall place of road pavement carries out the method for repairing |
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| Publication Number | Publication Date |
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| CN105862560A CN105862560A (en) | 2016-08-17 |
| CN105862560B true CN105862560B (en) | 2018-02-02 |
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| CN201610199179.7A Active CN105862560B (en) | 2014-05-26 | 2014-05-26 | The method repaired at the Bridge back wall of environmentally safe road pavement |
| CN201410223493.5A Active CN104047235B (en) | 2014-05-26 | 2014-05-26 | The Bridge back wall place of road pavement carries out the method for repairing |
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| CN201410223493.5A Active CN104047235B (en) | 2014-05-26 | 2014-05-26 | The Bridge back wall place of road pavement carries out the method for repairing |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108330848B (en) * | 2018-03-10 | 2019-05-31 | 青海省恒立公路勘测设计有限公司 | A kind of bridge pavement repairing construction technology |
| CN112252111A (en) * | 2020-08-25 | 2021-01-22 | 徐州成瑞建筑科技研究院有限公司 | Desilting and grouting reinforcement method for slab bottom void pavement crack |
| CN112627168A (en) * | 2020-12-23 | 2021-04-09 | 河南长安交通科技发展有限公司 | High-density polymer grouting reinforcement method for roadbed at sunken part of bridge and culvert butt strap |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU977789A1 (en) * | 1981-04-28 | 1982-11-30 | Научно-исследовательский институт строительства угольных и горнорудных предприятий | Method for plugging rocks |
| NL9001117A (en) * | 1990-05-10 | 1991-12-02 | Voorbij Groep Bv | METHOD FOR MOVING A PLATE-SHAPED CARRIER AND SEAL THEREFOR |
| JP2000204554A (en) * | 1999-01-08 | 2000-07-25 | Tenox Corp | Reinforcing structure for embankment |
| CN2793158Y (en) * | 2005-03-04 | 2006-07-05 | 铁道科学研究院铁道建筑研究所 | Porous pipe for cement casting at transitting section of present bridge |
| CN101168957A (en) * | 2007-10-01 | 2008-04-30 | 于心然 | Bridge brow plate emptying shallow layer grouting reinforcement technique |
| CN102051861B (en) * | 2009-11-02 | 2012-05-23 | 郑州优特基础工程维修有限公司 | Bridgehead vehicle bump prevention and control high polymer grouting technique |
| CN102052081A (en) * | 2009-11-02 | 2011-05-11 | 郑州优特基础工程维修有限公司 | High polymer grouting technology for treating tunnel void and construction method thereof |
| CN102409598A (en) * | 2011-09-29 | 2012-04-11 | 河海大学 | Method for processing vehicle bump at bridge head of existing highway |
| CN102888796A (en) * | 2012-09-13 | 2013-01-23 | 山西路众道桥有限公司 | Method for quickly repairing cavity disease of cement concrete pavement |
| CN203334152U (en) * | 2013-07-09 | 2013-12-11 | 中铁第四勘察设计院集团有限公司 | Bridge road transition section roadbed structure at deep layer yielding ground area |
| CN103669385A (en) * | 2013-12-30 | 2014-03-26 | 中铁二十四局集团有限公司 | Method for improving pile group bearing capacity by means of reticular pile foundations |
| FR3017398B1 (en) * | 2014-02-07 | 2017-06-23 | Electricite De France | METHOD FOR STABILIZING A TECHNICAL FILLER |
-
2014
- 2014-05-26 CN CN201610199179.7A patent/CN105862560B/en active Active
- 2014-05-26 CN CN201410223493.5A patent/CN104047235B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105862560A (en) | 2016-08-17 |
| CN104047235B (en) | 2016-04-27 |
| CN104047235A (en) | 2014-09-17 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method for repairing the bridge head and back of the road surface without pollution to the environment Granted publication date: 20180202 Pledgee: Industrial and Commercial Bank of China Danyang Branch Pledgor: JIANGSU DINGTAI ENGINEERING MATERIAL CO.,LTD. Registration number: Y2024980002806 |