CN107034760A - A kind of Fire-damaged method for maintaining of steel bridge deck asphalt concrete pavement layer - Google Patents
A kind of Fire-damaged method for maintaining of steel bridge deck asphalt concrete pavement layer Download PDFInfo
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- CN107034760A CN107034760A CN201710212424.8A CN201710212424A CN107034760A CN 107034760 A CN107034760 A CN 107034760A CN 201710212424 A CN201710212424 A CN 201710212424A CN 107034760 A CN107034760 A CN 107034760A
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- Prior art keywords
- fire
- cover
- maintenance area
- oil
- method described
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Classifications
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- 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
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/187—Repairing bituminous covers, e.g. regeneration of the covering material in situ, application of a new bituminous topping
-
- 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
- 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
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- 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 kind of steel bridge deck asphalt concrete pavement Fire-damaged maintenance process, concrete operations are as follows：Step 1：Positioning is measured, breakage subregion Field Number and description are taken pictures；Step 2：Construction area is made an overall screening, it is ensured that bridge floor free from dust and dirt；Step 3：Sticking layer oil is prepared according to repairing consumption and ground brushing is carried out；Step 4：Mix epoxy compound, Manual and vibration, it is levelling by hand；Step 5：After the health of bottom compound to after some strength, carrying out, cover oil is brushed and cover facing material is dispensed；Step 6：Construction starts maintenance after finishing, curing time is according to the strength of materials and temperature conditional decision.Compared with prior art, the present invention is simple to operate, and significantly, feasibility is strong, while Fire-damaged repair place can reach the effect of mating formation of original epoxy asphalt pavement layer, traffic status is good for environmental benefit.
Description
Technical field
The invention belongs to Communication and Transportation Engineering technical field, and in particular to a kind of fire of steel bridge deck asphalt concrete pavement layer
Disaster loss hinders method for maintaining.
Background technology
It is well known that the big-span steel bridge of China generally uses asphalt concrete pavement, it is from bridge floor paving mostly that it, which is destroyed,
What the weak link of dress started, and repeated action of the initial weak spot of deck paving except coming from extraneous load, also phase
When most comes from the pavement surfaces damage of unexpected initiation, such as fire incident.To the bridge of domestic many big-span steel bridges
Face finding of mating formation shows, the damaging oof bridge surface that the contingency such as fire triggers is cause deck paving further to damage important
One of reason.Therefore, a kind of maintenance process for being efficiently applied to the maintenance of steel bridge deck asphalt concrete pavement Fire-damaged is sought,
Performance and endurance quality to maintaining steel bridge deck asphalt concrete pavement, there is extremely important meaning.
Domestic at present less to the research in terms of steel bridge deck asphalt concrete pavement accidental-damage, existing restorative procedure is not
It is enough effective to solve the problems, such as Steel Bridge Deck Pavement Fire-damaged.CN 101906756A disclose a kind of steel bridge deck asphalt
Concrete pavement accidental-damage repair materials and restorative procedure, this method not only need to preheat to gathering materials, and in epoxy
Heating is needed also exist for during the mix of asphalt and aggregate, preheating and the temperature of mix are 110~130 DEG C.Mixed using heat
Restorative procedure, the requirement to place and equipment is higher, while there is the phenomenon of waste of resource, is unfavorable for environmental protection.Therefore, compel to be essential
Want a kind of simple and effective steel bridge deck asphalt concrete pavement Fire-damaged method for maintaining.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of Fire-damaged maintenance of steel bridge deck asphalt concrete pavement layer
Method, with solve prior art presence the requirement to place and equipment is higher and the problem of serious waste of resource.
Different from other type of impairments, Steel Bridge Deck occurs after Fire-damaged, and only Surface pavement layer produces different degrees of damage
Bad, bottom LIFT is not affected, therefore total need not be excluded, overhauled.Therefore, this time recovery scenario is special
Safety pin is to this kind of Failure type, using cold-patch epoxy asphalt mixture renovation technique, and only Surface pavement layer need to be repaired, this
It is different from the method for maintaining that other bridge floors are damaged.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of Fire-damaged method for maintaining of steel bridge deck asphalt concrete pavement layer, it includes following method：
(1) maintenance area is positioned, the degree of impairment in region is confirmed；
(2) maintenance area is made an overall screening, except crude removal；
(3) the brushing sticking layer oil in the maintenance area cleared up through step (2)；
(4) mix epoxy compound, after paving in the maintenance area after being handled through step (3), vibrate and be levelling, is carried out
Health is handled；
(5) brushing cover is oily in the maintenance area after being handled through step (4) and dispenses cover facing material；
(6) after being handled through step (5), maintenance area is open to traffic through conserving to recovery.
In step (2), the described operation made an overall screening is as follows：
In maintenance area, first bridge floor dust, debris are cleared away with mop, broom；Region is loosened to boss and pit
Cut；Loosening inspection is carried out to whole construction surface；Air blasting blowing is carried out to surface；Area is burnt using sanding machine cleaning construction
Domain, remove surface hide drift along, the debris such as fine particle；Reuse air blower cleaning and purging debris, it is ensured that free from dust, dirt
Thing；Again the scope of operation measure taking pictures；Workmen puts on shoe cover, is made an overall screening with cleaning agent；With spray gun to table
It is roasting that face carries out spray, it is ensured that no moisture in construction area.
In step (3), the consumption of described sticking layer oil is 0.7~0.9kg/m2；Wherein, described sticking layer oil is at 20 DEG C
Tensile strength is not less than fracture elongation at 7.5MPa, 20 DEG C and is not less than 180%.
In step (3),
Vibration：Vibrating compacting is carried out to the compound paved using small vibrating plate compactor, reduces space, and increase mixed
Close the compactness of material；
It is levelling：Ensure that the epoxy compound after vibration is substantially in same level, it is ensured that surface evenness, meet row
The requirement of car comfortableness.
In step (4), described epoxy compound by bituminous epoxy, gather materials and stirred with limestone dust (0~0.6mm) mixing
Mix and form；
Wherein,
Described gathers materials while including coarse aggregate (4.75~13.2mm) and fine aggregate (0.075~4.75mm)；
Bituminous epoxy, coarse aggregate, the mass ratio of fine aggregate and limestone dust are 6.3~6.7：30~40：50~65：5
~10.Bituminous epoxy, coarse aggregate, fine aggregate and limestone dust technical indicator part table 1~4 successively.
The epoxy mixture performance technical indicator of table 1
It is preferred that, it is described to gather materials preferable from hard and compact, wear-resisting, grain shape, and have preferable caking property with binder
The hard stone of energy, its technical requirements is as shown in table 2 and table 3；Filler uses limestone dust, and technical requirements are shown in Table 4.
The coarse aggregate technical requirement of table 2
The fine aggregate technical requirement of table 3
The limestone dust technical requirement of table 4
It is preferred that, cover oil coating weight ＞ 0.8kg/m in the step 52, its index be tensile strength (25 DEG C) >=
6.0MPa, fracture elongation (25 DEG C) >=190%；Cover facing material is 0~3mm of particle size fine aggregate, and index meets table 3 will
Ask.
In step (4), described health processing refers to placement 1~6 day；Wherein, preferably conditioned time is as follows：
In step (5), the consumption of described cover oil is 0.8~1.0kg/m2；Wherein, cover oil at 25 DEG C
Tensile strength is not less than fracture elongation at 6.0MPa, 25 DEG C and is not less than 190%.
It is preferred that, the oily spreading area of the cover should be greater than repaired area.
In step (5), described cover facing material is the fine aggregate that particle size is 0~3mm, the consumption of cover facing material for 1.0~
1.2kg/m2。
In step (6), curing time is 20~48h；Wherein, preferably curing time is as follows：
| Temperature (DEG C) | 20 | 30 | 40 |
| Curing time (h) | 48 | 30 | 20 |
Beneficial effect：Compared with prior art, the present invention has following advantage：
Steel bridge deck asphalt concrete pavement Fire-damaged maintenance process technical operation employed in the present invention is simple, energy-conservation
Environmental protection, is carried out at normal temperatures, it is not necessary to give material for repairing heating.The technique can ensure that reparation rear region and former pave-load layer simultaneously
There is a good collaborative work ability, it is to avoid repair the secondary breakage in area, improve the service life for repairing structure.
Under the same terms, repaired with the present invention, the open time that is open to traffic is more or less the same with prior art, but whole reparation
Time used will be less than prior art.Because during reparation, need not be carried out using the present invention program to bottom LIFT
Overhaul, and it need not be heated in compound mix, this is not only saved the time, and save material.
Embodiment
According to following embodiments, the present invention may be better understood.However, as it will be easily appreciated by one skilled in the art that real
Apply the content described by example and be merely to illustrate the present invention, without should be also without limitation on sheet described in detail in claims
Invention.
Embodiment 1
By taking the fire incident that Taizhou bridge occurs as an example, using steel bridge deck asphalt concrete pavement fire proposed by the present invention
Maintenance process is damaged, following steps are specifically included：
Step 1：Positioning is measured, breakage subregion Field Number and description are taken pictures, the initial destroyed area in record scene；
Step 2：Construction area first clears away bridge floor dust, debris with mop, broom；Region is loosened to boss and pit
Cut；Loosening inspection is carried out to whole construction surface；Air blasting blowing is carried out to surface；Area is burnt using sanding machine cleaning construction
Domain, remove surface hide drift along, the debris such as fine particle；Reuse air blower cleaning and purging debris, it is ensured that free from dust, dirt
Thing；Again the scope of operation measure taking pictures；Workmen puts on shoe cover, is made an overall screening with cleaning agent；With spray gun to table
It is roasting that face carries out spray, it is ensured that no moisture in construction area.Construction area is made an overall screening, it is ensured that bridge floor free from dust and dirt；
Step 3：Sticking layer oil is prepared according to repairing consumption and ground brushing is carried out, wherein sticking layer oil is by host and curing agent group
Into host and curing agent are poured into stainless steel using preceding, are no less than using the stirring of small hand-held electronic strong mixer
60s, then carries out hardened coating with palm fiber brush, and coating weight is 0.8kg/m2, its index is tensile strength (20 DEG C) >=7.5MPa,
Fracture elongation (20 DEG C) >=180%；
Step 4：Data are measured according to conflagration area and determine consumption, mix epoxy compound is mixed to affected area
Material paves, and levelling and vibrating compacting by hand, and wherein epoxy compound is by bituminous epoxy, coarse aggregate, fine aggregate and limestone mine
Powder mixing mixing is formed, and mass ratio is 6.5：38：56：6, its performance technologies index is shown in Table 1；
The epoxy mixture performance technical indicator of table 1
It is used to gather materials for hard and compact, wear-resisting, grain shape preferably, and have with binder the hard stone of preferable adhesive property
Material, its technical requirements is as shown in table 2 and table 3；Filler uses limestone dust, and technical requirements are shown in Table 4；
The coarse aggregate technical requirement of table 2
The fine aggregate technical requirement of table 3
The miberal powder technical requirement of table 4
Cold-mix is according to level with requiring and (being shown in Table 5) configuration material, and configuration weight is suitably put according to field patch area
It is wide；
The requirement of the mineral aggregate gradation of table 5
Step 5：After the health of bottom compound to after some strength, carrying out, cover oil is brushed and cover facing material is dispensed, apply
Brush and spreading scope are more than burnt area, wherein cover oil coating weight is 0.8~1.0kg/m2, its index is tensile strength
(25 DEG C) >=6.0MPa, fracture elongation (25 DEG C) >=190%；Cover facing material is particle size 0-3mm fine aggregate, and coating weight is
1.0~1.2kg/m2, index meets table 3 and requires.
Step 6：Construction starts maintenance after finishing, curing time is according to the strength of materials and temperature conditional decision, and this is existing
Field makes 6 test specimens, is placed on health in outdoor elements, and test intensity finally determines that opening is open to traffic the time daily.It is open to traffic
When measure epoxy compound Marshall stability be 50kN, shearing strength is 20MPa, meets code requirement.
Claims (7)
1. a kind of Fire-damaged method for maintaining of steel bridge deck asphalt concrete pavement layer, it is characterised in that it includes following method：
(1) maintenance area is positioned, the degree of impairment in region is confirmed；
(2) maintenance area is made an overall screening, except crude removal；
(3) the brushing sticking layer oil in the maintenance area cleared up through step (2)；
(4) mix epoxy compound, after paving in the maintenance area after being handled through step (3), vibrate and be levelling, carries out health
Processing；
(5) brushing cover is oily in the maintenance area after being handled through step (4) and dispenses cover facing material；
(6) after being handled through step (5), maintenance area is open to traffic through conserving to recovery.
2. according to the method described in claim 1, it is characterised in that in step (3), the consumption of described sticking layer oil be 0.7~
0.9kg/m2；Wherein, described sticking layer oil tensile strength at 20 DEG C is not less than fracture elongation at 7.5MPa, 20 DEG C and is not less than
180%.
3. according to the method described in claim 1, it is characterised in that in step (4), described epoxy compound is dripped by epoxy
It is blue or green, gather materials mixes together with limestone dust；
Wherein,
Described gathers materials including coarse aggregate and fine aggregate；
Bituminous epoxy, coarse aggregate, the mass ratio of fine aggregate and limestone dust are 6.3~6.7：30~40：50~65：5~10.
4. according to the method described in claim 1, it is characterised in that in step (4), described health processing refers to placement 1~6
My god.
5. according to the method described in claim 1, it is characterised in that in step (5), the consumption of described cover oil for 0.8~
1.0kg/m2；Wherein, the tensile strength at 25 DEG C of the cover oil is not less than fracture elongation at 6.0MPa, 25 DEG C and is not less than
190%.
6. according to the method described in claim 1, it is characterised in that in step (5), described cover facing material is that particle size is 0
~3mm fine aggregate, the consumption of cover facing material is 1.0~1.2kg/m2。
7. according to the method described in claim 1, it is characterised in that in step (6), curing time is 20~48h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212424.8A CN107034760A (en) | 2017-04-01 | 2017-04-01 | A kind of Fire-damaged method for maintaining of steel bridge deck asphalt concrete pavement layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212424.8A CN107034760A (en) | 2017-04-01 | 2017-04-01 | A kind of Fire-damaged method for maintaining of steel bridge deck asphalt concrete pavement layer |
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| Publication Number | Publication Date |
|---|---|
| CN107034760A true CN107034760A (en) | 2017-08-11 |
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|---|---|---|---|
| CN201710212424.8A Pending CN107034760A (en) | 2017-04-01 | 2017-04-01 | A kind of Fire-damaged method for maintaining of steel bridge deck asphalt concrete pavement layer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276962A (en) * | 2011-08-02 | 2011-12-14 | 南京路德金友新材料科技有限公司 | Resin for quick cold repair of epoxy asphalt bridge floor and preparation method thereof |
| CN103086643A (en) * | 2012-04-25 | 2013-05-08 | 北京仁创科技集团有限公司 | Self-compact and quickly-cured pavement patching material, preparation method thereof and application |
| CN103215874A (en) * | 2013-04-11 | 2013-07-24 | 同济大学 | Construction method for quickly repairing pot hole of epoxy asphalt bridge deck pavement layer |
| WO2014002140A1 (en) * | 2012-06-28 | 2014-01-03 | オサダ技研株式会社 | Pavement structure and method for producing same |
-
2017
- 2017-04-01 CN CN201710212424.8A patent/CN107034760A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276962A (en) * | 2011-08-02 | 2011-12-14 | 南京路德金友新材料科技有限公司 | Resin for quick cold repair of epoxy asphalt bridge floor and preparation method thereof |
| CN103086643A (en) * | 2012-04-25 | 2013-05-08 | 北京仁创科技集团有限公司 | Self-compact and quickly-cured pavement patching material, preparation method thereof and application |
| WO2014002140A1 (en) * | 2012-06-28 | 2014-01-03 | オサダ技研株式会社 | Pavement structure and method for producing same |
| CN103215874A (en) * | 2013-04-11 | 2013-07-24 | 同济大学 | Construction method for quickly repairing pot hole of epoxy asphalt bridge deck pavement layer |
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Application publication date: 20170811 |