CN106638295A - Pavement method of steel bridge deck made from epoxy asphalt - Google Patents
Pavement method of steel bridge deck made from epoxy asphalt Download PDFInfo
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- CN106638295A CN106638295A CN201611251017.XA CN201611251017A CN106638295A CN 106638295 A CN106638295 A CN 106638295A CN 201611251017 A CN201611251017 A CN 201611251017A CN 106638295 A CN106638295 A CN 106638295A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000010426 asphalt Substances 0.000 title claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 57
- 238000010276 construction Methods 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 19
- 238000005507 spraying Methods 0.000 claims abstract description 17
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000005260 corrosion Methods 0.000 claims abstract description 8
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- 239000000843 powder Substances 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 57
- 150000001875 compounds Chemical class 0.000 claims description 42
- 239000010410 layer Substances 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 25
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 20
- 238000004140 cleaning Methods 0.000 claims description 20
- 239000003973 paint Substances 0.000 claims description 20
- 239000011701 zinc Substances 0.000 claims description 20
- 229910052725 zinc Inorganic materials 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- 238000003892 spreading Methods 0.000 claims description 12
- 230000007480 spreading Effects 0.000 claims description 12
- 238000005056 compaction Methods 0.000 claims description 11
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 3
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- 238000011105 stabilization Methods 0.000 claims description 3
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- 238000004861 thermometry Methods 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 3
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- 235000013399 edible fruits Nutrition 0.000 claims description 2
- 238000007522 manual polishing technique Methods 0.000 claims 2
- 239000003337 fertilizer Substances 0.000 claims 1
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- 230000008901 benefit Effects 0.000 abstract description 8
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- 235000006040 Prunus persica var persica Nutrition 0.000 description 1
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 230000032798 delamination Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a pavement method of a steel bridge deck made from epoxy asphalt, comprising the following steps: (1) applying abrasive blasting for rust removal and anti-corrosion treatment to the steel bridge deck, and measuring an atmospheric temperature, an atmospheric humidity and a temperature of a steel plate in the process of the rust removal and coating operations; (2) carrying out a construction of a waterproof layer, wherein the spraying quantity on the steel bridge deck interface is 0.66 +/- 0.03 kg/m2====m<2> and the same on the asphalt mixture interface is 0.45 +/- 0.03 kg/m2====m<2> under the construction condition with a temperature ranging from 15 to 30 DEG C; (3) carrying out a construction of a bridge deck pavement layer, wherein the proportion of aggregates of a cold aggregate bin is determined based on the radio of the aggregates determined by the target mix proportion; the heating temperature of aggregates is controlled to be in a range from 130 to 140 DEG C; a sieving test is carried out by sampling from a hot aggregate bin; a mineral aggregate consists of 24% of coarse aggregates with diameter being 5-10mm, 69% of fine aggregates with diameter being 0-5mm and 7% of mineral powder; and the asphalt-aggregate mass ratio is 6.8%. The steel bridge deck made from the epoxy asphalt by using the pavement method has the advantages of being high in bonding strength, not liable to delaminate or slip, good in waterproof performance, not liable to be permeated by water to corrode the steel plate, high in corrosion resistance and capable of extending the service life of the bridge. Therefore, the epoxy asphalt is an excellent binding agent, and is especially applicable for an orthotropic steel bridge deck system.
Description
Technical field
The present invention relates to technical field of bridge deck pavement is planted, specially a kind of method for paving of bituminous epoxy Steel Bridge Deck.
Background technology
Steel bridge deck stress and deformation ratio highway pavement are much more complex, because it can occur a certain degree of deformation, to bonding
Layer and the intensity of pave-load layer, deformability, temperature characterisitic and fatigue durability etc. have higher requirement, paving steel bridge deck technology
It is the worldwide technological puzzle for affecting steel bridge durability.In prior art, paving steel bridge deck substantially adopts bituminous concrete
System, from the material and construction method angle selected, basically forms the conceptual design of " three kinds of materials, four kinds of structures "：(1)
Germany, cast asphalt concrete (Gussasphalt) scheme that Japan is representative；Cast asphalt concrete pave-load layer and drip
The major advantage of blue or green matizhi concrete pavement layer is：Voidage close zero, with good waterproof, ageing resistace, cracking resistance
Performance is strong, and to the adhesive property between the following and steel plate of steel plate general bituminous concrete is better than.Its major defect is：High temperature
Stability is poor, easily forms rut.(2) bitumastic concrete (Mastic asphalt) scheme with Britain as representative is (real
It is also that cast asphalt concrete, simply pavement thickness and technique are different with Japan etc. on border)；(3) Germany and Japan etc.
The modified asphalt SMA scheme (Stone Mastic Asphalt) that state adopts in the recent period；The master of modified asphalt SMA concrete pavement layer
The advantage is wanted to be：Pliability, anti-loose, anti-crack ability are strong, with good durability and water resistance；Anti- creeping and anti-permanent change
The ability of shape is strong, is not likely to produce rut, and with coarse surface structure, non-skid property is good, and difficulty of construction is relatively small, the construction time
Short, expense is relatively low, but needs further to solve the bonding and waterproof problem of pave-load layer and steel plate.(4) with the U.S. as representative
Epoxy resin asphalt (Epoxy asphalt) concrete scheme.
The content of the invention
Technical problem solved by the invention is to provide a kind of method for paving of bituminous epoxy Steel Bridge Deck, above-mentioned to solve
Problem in background technology.
Technical problem solved by the invention employs the following technical solutions to realize：A kind of bituminous epoxy Steel Bridge Deck is mated formation
Method, comprises the following steps：
(1) bridge floor derusting by sandblasting, preservative treatment；In rust cleaning and painting operation, measurement atmospheric temperature, humidity and steel plate temperature
Degree, relative humidity of atomsphere 40-85%, steel billet temperature should be higher than that dew-point temperature 3-10 DEG C；
1.1st, bridge floor derusting by sandblasting：Operation is carried out using Full-automatic dustless abrasive blast equipment, bridge floor corner part is using artificial
Technique for grinding is eliminated rust；Full-automatic dustless abrasive blast equipment rust cleaning bridge floor cleannes reach the requirement of Sa2.5 levels；Manual polishing work
Skill rust cleaning bridge floor cleannes reach the requirement of Sa3.0 levels；The requirement of roughness reaches 50～100 μm；
1.2nd, bridge floor anti-corrosion is disposed：The spray of ground floor epoxy zinc-rich paint on steel plate is completed after Steel Bridge Deck derusting by sandblasting within 4h
Apply anti-corrosion to dispose, its performance is detected before spraying epoxy zinc-rich paint, the spraying of ground floor epoxy zinc-rich paint is completed, and is dried 4-
Second layer epoxy zinc-rich paint is sprayed after 12h；Continue afterwards to be dried after 4-12h the construction operation for carrying out bituminous epoxy water-proof tack coat,
In the spraying process of epoxy zinc-rich paint, Steel Bridge Deck surface is complete, uniform, without holiday phenomenon, after the completion of spraying, coating should it is continuous,
Uniformly, it is smooth, without particle, no sag or other defect, color answers uniformity, 50～100 μm of thickness, if enamelled coating have it is show-through or
Breakage, should be carried out sectional repair or is all reprocessed according to defect size and the order of severity by above-mentioned technique；Epoxy zinc-rich paint is 25
Surface drying time is 5-15min, is fully cured time 3-7d and steel plate adhesion strength 5-15Mpa at DEG C；
(2) bond capacity construction；Under the conditions of 15-30 DEG C of temperature of construction, bituminous epoxy binding material going out in sprinkling
Material temperature degree is 120 DEG C, and the time of staying in pipeline cannot be greater than 10min, and Steel Bridge Deck interface spread quantity is 0.66 ± 0.03kg/
m2；Asphalt interface is 0.45 ± 0.03kg/m2；
2.1st, bridge floor cleaning：Tack coat dispenses front soft broom and clears away bridge floor dust, debris；If any greasy dirt, nonionic is used
Type soap powder aqueous cleaning is finally clean with water cleaning down and be completely dried；Works surface to protruding bridge floor is also clear
Wash clean；Spraying range of each cleaning scope more than subsequent bituminous epoxy binding material；Meanwhile, to avoid being contacted with pave-load layer
Position in addition is polluted, and these positions all cover in advance；
2.2nd, tack coat spread：Spread fabric width and boundary line are divided, to ensure that distribution vehicle carries out spread by prescribed limit, bonding
Spreading tube highly should ensure that no less than dual repeatedly spread quantity during material spread, enter pedestrian to the grey face of appearance during spread afterwards
Work is mended and spilt, and mending the amount of spilling should control in prescribed limit, after the completion of bituminous epoxy water-proof tack coat spread, job site should be kept clear
It is clean；
(3) bridge deck pavement construction；Gathered materials ratio according to the proportioning setting cold burden storehouse that gathers materials that Target Mixture Ratio determines, control
Aggregate heating temperature is 130-140 DEG C, and from hot aggregate bin sampling sieve test, mineral aggregate composition are carried out：5-10mm coarse aggregates 24%, 0-
5mm fine aggregates 69%, breeze 7%, oilstone mass ratio：6.8%；
3.1st, compound is mixed and stirred：The temperature of bituminous epoxy mix should be maintained at set point of temperature between 105-110 DEG C, mix and stir
The operating personnel that stand should keep a close eye on temperature variations, forbid significantly adjusting air door and throttle, it is to avoid temperature fluctuation is too big；
3.2nd, dry mixing：The each cold burden storehouse feeding speed determined during according to trial mix heats mineral aggregate temperature to dryer feeding
To 105-110 DEG C, it is heated after enter hot aggregate bin, in strict accordance with refinery operation scheduling determine each hot aggregate bin aggregate quality and
The quality of breeze, input is mixed cylinder and carries out dry mixing, and the dry mixing time is the 5-20 seconds, then measures hot material temperature；This operation repeats 3-5
Time, until drop temperature is stable to mix and stir temperature 105-110 DEG C；
3.3rd, wet-mixing：Gathering materials of working good is heated into 105-110 DEG C, while bituminous epoxy is passed through into special adding set
It is added to and mixes in cylinder, carries out wet-mixing, 30-90 seconds wet-mixing time；Epoxy asphalt mixture is discharged into interim hot material after the completion of mixing and stirring
In bucket, thermometric immediately, the drop temperature of compound should be controlled at 105-110 DEG C；Compound is mixed and stirred after temperature stabilization, you can formal
Discharging, per car compound loading time is less than 10 minutes；
3.4th, compound transport：To prevent compound from adhering with material mover carriage, the portion contacted with compound in all compartments
Position, used as interleaving agent, haulage vehicle adds a cover canvas or cotton-wadded quilt to brushing vegetable oil in transportation, to slow down mixture temperature
Reduce, haulage time is less than 50 minutes；
3.5th, mixture laying：Epoxy asphalt mixture is paved using the bituminous pavement paving machine of regulation, in paving process
The workability and surface uniformity of compound is should ensure that, so that compacted depth meets requiring, it is to avoid gather materials isolation, and paves
Mix surface afterwards should be without coarse aggregate or fine aggregate hole, the surface that paves must not manually rake；
If special messenger calculates and control spreading speed, discharge time model " is allowed according to feed capacity and each truck feeding list
Enclose " adjusted in time, to control not shut down, not overtime, make every effort at the uniform velocity to pave for principle, spreading speed general control 2～
4m/min；
Paving for compound is carried out according to the coefficient of loose laying that test section is obtained；Once pine is surveyed in paving process per 10m spread thick
Degree, and note road camber, adjusted if necessary, must smooth out, in the hope of not affecting the material position in flatness, and spiral distributor
It is advisable with being slightly above spiral distributor 2/3, it is to avoid isolation occurs in paved mixture；
3.6th, pave-load layer is rolled：Using two kinds of " rubber tire-steel wheel-rubber tire-steel wheel " and " steel wheel-rubber tire-rubber tire-steel wheel "
Compaction assembly mode, compound elapses flatness situation after the completion of situation and final pressure, wheel pelmatogram situation in observation construction, and record grinds
Pressure pass and mixture temperature, determine the rational compaction assembly form in different layers position and respectively roll the number of rolling in stage, are guarantor
Card consolidation effect, cutting optimal is rolled using the order of " glue-steel-glue-steel ", and upper layer is suitable using " steel-glue-glue-steel "
Sequence is rolled, if producing bubble in roller compaction process, is poked with sharp thing at once and is compacted again, for road roller pressing
It is real less than local pave-load layer, cutting optimal uses pressure road using hand compaction or hand-held vibration rammer vibration compacting, upper layer
Machine is compacted.
Further, it is described to carry out first pressing after mixture laying at once in step (3), temperature drop is just pressed in 75-
80 DEG C complete before, and first pressing should closely follow paver, and number of machine passes is 4-8 time, and multiple pressure 4 times should be at once carried out after the completion of first pressing, multiple
After the completion of pressure should final pressure 4 times at once, final pressure should complete before mixture temperature drops to 50 DEG C.
Further, first pressing and the final pressure in step (3) are all after having pressed 3 times, to be measured with infrared thermometry and remembered
Surface temperature, when surface temperature is unsatisfactory for requiring, then surveys internal temperature with plug-in type thermometer, when internal temperature is unsatisfactory for wanting
When asking, in addition to twice of multiple pressure, to ascertain the reason, adopt an effective measure, and prevent to occur again.
Further, road roller driving wheel when rolling in step (3) from low to high, connects successively towards paver
Continue and uniformly roll, the adjacent band that rolls overlaps 1/3 wheel width, does not allow road roller to turn in the scope of operation, reverse end for end, road roller starting,
Stop the jogging that must slow down, forbidden emergency brake braking.
Further, it is described distinguishing mark to be arranged to first pressing, multiple pressure, final pressure paragraph in step (3), it is easy to driver to distinguish
Recognize, to rolling order, road roller combination, number of rolling, rolling speed and rolling temperature special hilllock management and inspection, record should be set,
Firmly prevent surface layer leakage pressure.After mixture laying, road roller is immediately rolled, to shorten rolling operation segment length, but not produce
Passage, shattered crack are principle.
Further, it is described in Mechanical Spreading, manually to repair repeatedly in step 3.5, but ought there is section
Undesirable, local lack material, local mixing material substantially isolate, the obvious out-of-flatness in surface, dead material problem when, in construction technology people
Conscientiously adjustment, partial refuelling, carefully repairing, with compound drop-over is spread, does not stay trace and difference under member's specific guidance.
Further, it is described in step 3.5 in paving process by special messenger to spiral distributor and hopper in " dead material "
Cleared up, the waste material of generation, " dead material " should be concentrated and be placed in small handcart in paving process, then clean out job site,
If meeting rain suddenly in paving, construction, and the compound of the non-compaction moulding of removing are stopped immediately, non-paved mixture must be whole
It is discarded.
It is further, described that when paving with first pressing, the workability of observation and record compound, surface are equal in step (3)
Even property, whether there is wheel pelmatogram situation, and temperature when recording construction after first pressing.
Compared with disclosed technology, there is advantages below in the present invention：The present invention has high bond strength, is not likely to produce de-
The diseases such as layer, sliding；Water resistance is good, is difficult permeable erosion steel plate；Anti-corrosive properties are strong, extend bridge and benefit from the life-span.Therefore epoxy
Pitch is a kind of excellent binding agent, is particularly suited for Orthotropic Steel Bridge Deck system.
Specific embodiment
In order that the technological means of the present invention, creation characteristic, workflow, using method reached purpose and effect are easy to bright
It is white to understand, below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of method for paving of bituminous epoxy Steel Bridge Deck, comprises the following steps：
(1) bridge floor derusting by sandblasting, preservative treatment；In rust cleaning and painting operation, measurement atmospheric temperature, humidity and steel plate temperature
Degree, relative humidity of atomsphere 40-85%, steel billet temperature should be higher than that dew-point temperature 3-10 DEG C；
1.1st, bridge floor derusting by sandblasting：Operation is carried out using Full-automatic dustless abrasive blast equipment, bridge floor corner part is using artificial
Technique for grinding is eliminated rust；Full-automatic dustless abrasive blast equipment rust cleaning bridge floor cleannes reach the requirement of Sa2.5 levels；Manual polishing work
Skill rust cleaning bridge floor cleannes reach the requirement of Sa3.0 levels；The requirement of roughness reaches 50～100 μm；
1.2nd, bridge floor anti-corrosion is disposed：The spray of ground floor epoxy zinc-rich paint on steel plate is completed after Steel Bridge Deck derusting by sandblasting within 4h
Apply anti-corrosion to dispose, its performance is detected before spraying epoxy zinc-rich paint, the spraying of ground floor epoxy zinc-rich paint is completed, and is dried 4-
Second layer epoxy zinc-rich paint is sprayed after 12h；Continue afterwards to be dried after 4-12h the construction operation for carrying out bituminous epoxy water-proof tack coat,
In the spraying process of epoxy zinc-rich paint, Steel Bridge Deck surface is complete, uniform, without holiday phenomenon, after the completion of spraying, coating should it is continuous,
Uniformly, it is smooth, without particle, no sag or other defect, color answers uniformity, 50～100 μm of thickness, if enamelled coating have it is show-through or
Breakage, should be carried out sectional repair or is all reprocessed according to defect size and the order of severity by above-mentioned technique；Epoxy zinc-rich paint is 25
Surface drying time is 5-15min, is fully cured time 3-7d and steel plate adhesion strength 5-15Mpa at DEG C；
(2) bond capacity construction；Under the conditions of 15-30 DEG C of temperature of construction, bituminous epoxy binding material going out in sprinkling
Material temperature degree is 120 DEG C, and the time of staying in pipeline cannot be greater than 10min, and Steel Bridge Deck interface spread quantity is 0.66 ± 0.03kg/
m2；Asphalt interface is 0.45 ± 0.03kg/m2；
2.1st, bridge floor cleaning：Tack coat dispenses front soft broom and clears away bridge floor dust, debris；If any greasy dirt, nonionic is used
Type soap powder aqueous cleaning is finally clean with water cleaning down and be completely dried；Works surface to protruding bridge floor is also clear
Wash clean；Spraying range of each cleaning scope more than subsequent bituminous epoxy binding material；Meanwhile, to avoid being contacted with pave-load layer
Position in addition is polluted, and these positions all cover in advance；
2.2nd, tack coat spread：Spread fabric width and boundary line are divided, to ensure that distribution vehicle carries out spread by prescribed limit, bonding
Spreading tube highly should ensure that no less than dual repeatedly spread quantity during material spread, enter pedestrian to the grey face of appearance during spread afterwards
Work is mended and spilt, and mending the amount of spilling should control in prescribed limit, after the completion of bituminous epoxy water-proof tack coat spread, job site should be kept clear
It is clean；
(3) bridge deck pavement construction；Gathered materials ratio according to the proportioning setting cold burden storehouse that gathers materials that Target Mixture Ratio determines, control
Aggregate heating temperature is 130-140 DEG C, and from hot aggregate bin sampling sieve test, mineral aggregate composition are carried out：5-10mm coarse aggregates 24%, 0-
5mm fine aggregates 69%, breeze 7%, oilstone mass ratio：6.8%；
3.1st, compound is mixed and stirred：The temperature of bituminous epoxy mix should be maintained at set point of temperature between 105-110 DEG C, mix and stir
The operating personnel that stand should keep a close eye on temperature variations, forbid significantly adjusting air door and throttle, it is to avoid temperature fluctuation is too big；
3.2nd, dry mixing：The each cold burden storehouse feeding speed determined during according to trial mix heats mineral aggregate temperature to dryer feeding
To 105-110 DEG C, it is heated after enter hot aggregate bin, in strict accordance with refinery operation scheduling determine each hot aggregate bin aggregate quality and
The quality of breeze, input is mixed cylinder and carries out dry mixing, and the dry mixing time is the 5-20 seconds, then measures hot material temperature；This operation repeats 3-5
Time, until drop temperature is stable to mix and stir temperature 105-110 DEG C；
3.3rd, wet-mixing：Gathering materials of working good is heated into 105-110 DEG C, while bituminous epoxy is passed through into special adding set
It is added to and mixes in cylinder, carries out wet-mixing, 30-90 seconds wet-mixing time；Epoxy asphalt mixture is discharged into interim hot material after the completion of mixing and stirring
In bucket, thermometric immediately, the drop temperature of compound should be controlled at 105-110 DEG C；Compound is mixed and stirred after temperature stabilization, you can formal
Discharging, per car compound loading time is less than 10 minutes；
3.4th, compound transport：To prevent compound from adhering with material mover carriage, the portion contacted with compound in all compartments
Position, used as interleaving agent, haulage vehicle adds a cover canvas or cotton-wadded quilt to brushing vegetable oil in transportation, to slow down mixture temperature
Reduce, haulage time is less than 50 minutes；
3.5th, mixture laying：Epoxy asphalt mixture is paved using the bituminous pavement paving machine of regulation, in paving process
The workability and surface uniformity of compound is should ensure that, so that compacted depth meets requiring, it is to avoid gather materials isolation, and paves
Mix surface afterwards should be without coarse aggregate or fine aggregate hole, the surface that paves must not manually rake；
If special messenger calculates and control spreading speed, discharge time model " is allowed according to feed capacity and each truck feeding list
Enclose " adjusted in time, to control not shut down, not overtime, make every effort at the uniform velocity to pave for principle, spreading speed general control 2～
4m/min；
Paving for compound is carried out according to the coefficient of loose laying that test section is obtained；Once pine is surveyed in paving process per 10m spread thick
Degree, and note road camber, adjusted if necessary, must smooth out, in the hope of not affecting the material position in flatness, and spiral distributor
It is advisable with being slightly above spiral distributor 2/3, it is to avoid isolation occurs in paved mixture；
In Mechanical Spreading, manually must not repair repeatedly, but when occurring, section is undesirable, locally lack material, local
Compound is substantially isolated, the obvious out-of-flatness in surface, dead material problem when, conscientiously adjustment, office under construction technical staff specific guidance
Portion reloads, and carefully repairs, and with compound drop-over is spread, does not stay trace and difference.
In paving process by special messenger to spiral distributor and hopper in " dead material " clear up, produce in paving process
Waste material, " dead material " should concentrate and be placed in small handcart, then clean out job site, if meeting rain suddenly in paving, stop immediately
Only construct, and remove the compound of non-compaction moulding, non-paved mixture must be discarded all；
3.6th, pave-load layer is rolled：Using two kinds of " rubber tire-steel wheel-rubber tire-steel wheel " and " steel wheel-rubber tire-rubber tire-steel wheel "
Compaction assembly mode, compound elapses flatness situation after the completion of situation and final pressure, wheel pelmatogram situation in observation construction, and record grinds
Pressure pass and mixture temperature, determine the rational compaction assembly form in different layers position and respectively roll the number of rolling in stage, are guarantor
Card consolidation effect, cutting optimal is rolled using the order of " glue-steel-glue-steel ", and upper layer is suitable using " steel-glue-glue-steel "
Sequence is rolled, if producing bubble in roller compaction process, is poked with sharp thing at once and is compacted again, for road roller pressing
It is real less than local pave-load layer, cutting optimal uses pressure road using hand compaction or hand-held vibration rammer vibration compacting, upper layer
Machine is compacted.
During construction, first pressing is carried out after mixture laying at once, be just pressed in temperature drop and complete before to 75-80 DEG C, first pressing
Paver should be closelyed follow, number of machine passes is 4-8 time, multiple pressure 4 times should be at once carried out after the completion of first pressing, should final pressure at once after the completion of multiple pressure
4 times, final pressure should be completed before mixture temperature drops to 50 DEG C.
During construction, first pressing and final pressure are all after having pressed 3 times, note surface temperature to be measured with infrared thermometry, when surface temperature
Degree surveys internal temperature when being unsatisfactory for requiring, then with plug-in type thermometer, when internal temperature is unsatisfactory for requiring, except twice of multiple pressure
Outward, to ascertain the reason, adopt an effective measure, and prevent to occur again.
During construction, towards paver, from low to high, successively continuous uniform is rolled road roller driving wheel when rolling, adjacent stone roller
Pressure zone overlaps 1/3 wheel width, does not allow road roller to turn in the scope of operation, reverse end for end, and road roller is started, stops the jogging that must slow down,
Inaccurate emergency brake braking.
During construction, distinguishing mark is arranged to first pressing, multiple pressure, final pressure paragraph, be easy to driver to recognize, to rolling order, pressure
Road machine combination, number of rolling, rolling speed and roll temperature should set the management of special hilllock and check, record, firmly prevent surface layer leakage pressure.
After mixture laying, road roller is immediately rolled, to shorten rolling operation segment length, but not produce passage, shattered crack as principle.
During construction, workability, the surface uniformity of compound is observed and recorded when paving with first pressing, wheel is whether there is after first pressing
Pelmatogram situation, and temperature when recording construction.
(1) asphalt binder used by epoxy asphalt concrete is a kind of thermosets, fundamentally changes pitch
Thermoplasticity, imparts the excellent physical and chemical performance of compound.Bituminous epoxy is to form irreversible, insoluble by chemical reaction
Tridimensional network, with good high-temperature stability, Rut resistance, antifatigue, cohesive force, waterproof etc., its mechanical strength is general
3～5 times of logical bituminous concrete.This adapts to completely China's national situation (Heavy Traffic is big, hot weather is more), big with the southeast in recent years
Learn the epoxy asphalt mixture based on research and development to be widely used in the deck paving of Large Span Bridges, obtain good effect.It is beautiful
State is in 1967 first by pave-load layer of the bituminous epoxy as San Mateo-Hayward bridge orthotropic plate bridge floors, effect
Fruit is good, and then epoxy asphalt mixture is used as steel deck paving package material by Japan, Canada, Holland and Australia in succession.
The country, Zhoushan peach Tianmen bridge, Qingpu Shanghai bridge, Tianjin Gu Kou bridges, Jiangsu Run-yang bridge, the bridge of yangtze river in nanjing two, Jiangyin
Yangtze Bridge etc. adopts epoxy asphalt pavement, runs well, and heavy damage does not occur.
(2) water-proof tack coat adopts epoxy zinc-rich paint+bituminous epoxy binding agent, a large number of experiments show that, epoxy zinc-rich paint tool
There is preferable antiseptic effect, this is one of material more than the comparison of early stage domestic steel bridge deck anti-corrosion.Bituminous epoxy binding agent
Belong to reactive explosive, with high bond strength, be not likely to produce the diseases such as delamination, sliding；Water resistance is good, is difficult permeable erosion
Steel plate；Anti-corrosive properties are strong, extend bridge and benefit from the life-span.Therefore bituminous epoxy is a kind of excellent binding agent, is particularly suited for orthogonal
Different in nature steel bridge deck system.
(3) paving hazard is widely applied at home, yangtze river in nanjing two with its excellent high temperature anti-rut behavior
There is not the disease such as high temperature rut and passage already close to 10 years in bridge service life.Moisten positive bridge, the main bridge steel of Su-Tong Brideg afterwards
Bridge floor all employs epoxy asphalt concrete paving hazard.Deck paving is due to being located on hanging bridge structure, in summer
Hot weather, can reach 70 DEG C, higher than road surface 10 DEG C, it is therefore desirable to paving material has good high-temperature stability.Exist successively
Respectively rut is carried out to epoxy asphalt concrete, AC modified asphalt concretes and SMA mixture under under the conditions of 60 DEG C and 70 DEG C
Test, as a result finds the dynamic stability (secondary mm-1) of AC modified asphalt concretes and SMA at 60 DEG C about more than 2000,
And epoxy asphalt concrete does not almost deform.
(4) bituminous epoxy is due to having higher intensity and larger stiffness modulus, so making in equal fatigue stress
With under, compared with common pitch, with very excellent fatigue performance, its fatigue life be usually plain asphalt 10～
30 times or so.According to fatigue behaviour comparative test result of the Australian Xi Men great Qiao management boards to various bituminous concretes, can
The fatigue life for drawing epoxy asphalt concrete is 5 × 106It is secondary, and the fatigue life of bituminous concrete is only under equal experiment condition
0.29 × 10 can be reached6Secondary, both have differed as many as 13 times.For Large Span Bridges, when load action thereon when, its change
Shape is big compared with road surface, along with wind load, and the use environment of harshness, it is very high to fatigue durability requirement, and epoxy asphalt mixture
This excellent fatigue performance the performance of paving bridge floor will be had greatly improved.
(5) the brittle point temperature of epoxy asphalt concrete can not embody the superiority of itself, but this can not illustrate ring
The crack resistance at low-temperature of oxygen asphalt is bad.Experiment show -15 DEG C at epoxy asphalt mixture compared with casting mixture,
Bending strain result explanation epoxy asphalt mixture comparatively speaking still has certain low temperature advantage.
(6) mixer of epoxy asphalt concrete plain asphalt is mixed and stirred, it paves, compacting machinary is with plain asphalt coagulation
Soil does not have any difference, and the only requirement to compound to temperature and time is more harsh.Need to be completed within " presetting period "
All of work, then quality can not reach most preferably, or become waste material.At present, epoxy asphalt mixture deck paving technology has been
Jing relative maturities, define the system of complete set.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the present invention by appending claims and
Its equivalent thereof.
Claims (8)
1. a kind of method for paving of bituminous epoxy Steel Bridge Deck, it is characterised in that：Comprise the following steps：
(1) bridge floor derusting by sandblasting, preservative treatment；In rust cleaning and painting operation, measurement atmospheric temperature, humidity and steel billet temperature,
Relative humidity of atomsphere 40-85%, steel billet temperature should be higher than that dew-point temperature 3-10 DEG C；
1.1st, bridge floor derusting by sandblasting：Operation is carried out using Full-automatic dustless abrasive blast equipment, bridge floor corner part adopts manual polishing
Technique is eliminated rust；Full-automatic dustless abrasive blast equipment rust cleaning bridge floor cleannes reach the requirement of Sa2.5 levels；Manual polishing technique is removed
Rust bridge floor cleannes reach the requirement of Sa3.0 levels；The requirement of roughness reaches 50～100 μm；
1.2nd, bridge floor anti-corrosion is disposed：The spraying for completing ground floor epoxy zinc-rich paint on steel plate after Steel Bridge Deck derusting by sandblasting within 4h is prevented
Corruption is disposed, and its performance is detected before spraying epoxy zinc-rich paint, and the spraying of ground floor epoxy zinc-rich paint is completed, and is dried 4-12h
Second layer epoxy zinc-rich paint is sprayed afterwards；Continue afterwards to be dried after 4-12h the construction operation for carrying out bituminous epoxy water-proof tack coat, epoxy
In the spraying process of zinc rich paint, Steel Bridge Deck surface is complete, uniform, without holiday phenomenon, after the completion of spraying, coating should it is continuous, uniform,
It is smooth, without particle, no sag or other defect, color answers uniformity, 50～100 μm of thickness, if enamelled coating has show-through or breakage,
Should carry out sectional repair by above-mentioned technique or all reprocess according to defect size and the order of severity；Epoxy zinc-rich paint is at 25 DEG C
Surface drying time is 5-15min, is fully cured time 3-7d and steel plate adhesion strength 5-15Mpa；
(2) bond capacity construction；Under the conditions of 15-30 DEG C of temperature of construction, bituminous epoxy binding material goes out material temperature in sprinkling
Spend for 120 DEG C, the time of staying in pipeline cannot be greater than 10min, Steel Bridge Deck interface spread quantity is 0.66 ± 0.03kg/m2；
Asphalt interface is 0.45 ± 0.03kg/m2；
2.1st, bridge floor cleaning：Tack coat dispenses front soft broom and clears away bridge floor dust, debris；If any greasy dirt, with nonionic fertilizer
Soap powder aqueous cleaning is finally clean with water cleaning down and be completely dried；Works surface to protruding bridge floor also cleans dry
Only；Spraying range of each cleaning scope more than subsequent bituminous epoxy binding material；Meanwhile, beyond avoiding being contacted with pave-load layer
Position polluted, these positions all cover in advance；
2.2nd, tack coat spread：Spread fabric width and boundary line are divided, to ensure that distribution vehicle carries out spread by prescribed limit, binding material spills
Spreading tube highly should ensure that no less than dual repeatedly spread quantity during cloth, and the grey face of appearance during spread is manually mended afterwards
Spill, mending the amount of spilling should control in prescribed limit, after the completion of bituminous epoxy water-proof tack coat spread, job site should be kept to clean；
(3) bridge deck pavement construction；Gathered materials ratio according to the proportioning setting cold burden storehouse that gathers materials that Target Mixture Ratio determines, control is gathered materials
Heating-up temperature is 130-140 DEG C, and from hot aggregate bin sampling sieve test, mineral aggregate composition are carried out：5-10mm coarse aggregates 24%, 0-5mm
Fine aggregate 69%, breeze 7%, oilstone mass ratio：6.8%；
3.1st, compound is mixed and stirred：The temperature of bituminous epoxy mix should be maintained at set point of temperature between 105-110 DEG C, blending station behaviour
Making personnel should keep a close eye on temperature variations, forbid significantly adjusting air door and throttle, it is to avoid temperature fluctuation is too big；
3.2nd, dry mixing：The each cold burden storehouse feeding speed determined during according to trial mix is heated to mineral aggregate temperature to dryer feeding
105-110 DEG C, it is heated after enter hot aggregate bin, in strict accordance with refinery operation scheduling determine each hot aggregate bin aggregate quality and ore deposit
The quality of powder, input is mixed cylinder and carries out dry mixing, and the dry mixing time is the 5-20 seconds, then measures hot material temperature；This operation repeats 3-5
Time, until drop temperature is stable to mix and stir temperature 105-110 DEG C；
3.3rd, wet-mixing：Gathering materials of working good is heated into 105-110 DEG C, while bituminous epoxy is added by special adding set
To mixing in cylinder, wet-mixing, 30-90 seconds wet-mixing time are carried out；Epoxy asphalt mixture is discharged into interim hot material bucket after the completion of mixing and stirring,
Thermometric immediately, the drop temperature of compound should be controlled at 105-110 DEG C；Compound is mixed and stirred after temperature stabilization, you can formal discharging,
Per car compound loading time is less than 10 minutes；
3.4th, compound transport：To prevent compound from adhering with material mover carriage, the position contacted with compound in all compartments applies
Used as interleaving agent, haulage vehicle adds a cover canvas or cotton-wadded quilt to brush vegetable oil in transportation, to slow down the reduction of mixture temperature,
Haulage time is less than 50 minutes；
3.5th, mixture laying：Epoxy asphalt mixture is paved using the bituminous pavement paving machine of regulation, should be protected in paving process
The workability and surface uniformity of card compound, so that compacted depth meets requiring, it is to avoid gather materials isolation, and after paving
Mix surface should be without coarse aggregate or fine aggregate hole, the surface that paves must not manually rake；
If special messenger calculates and control spreading speed, entered according to " the allowing discharge time scope " of feed capacity and each truck feeding list
Row in time adjustment, to control not shut down, not overtime, makes every effort at the uniform velocity to pave for principle, and spreading speed general control is in 2～4m/
min；
Paving for compound is carried out according to the coefficient of loose laying that test section is obtained；A loose laying depth is surveyed per 10m in paving process, and
Note road camber, adjusted if necessary, must smooth out, in the hope of not affecting the material position in flatness, and spiral distributor with slightly
It is advisable higher than spiral distributor 2/3, it is to avoid isolation occurs in paved mixture；
3.6th, pave-load layer is rolled：Rolled using two kinds of " rubber tire-steel wheel-rubber tire-steel wheel " and " steel wheel-rubber tire-rubber tire-steel wheel "
Combination, flatness situation, wheel pelmatogram situation after the completion of compound passage situation and final pressure in observation construction, record is rolled time
Number and mixture temperature, determine the rational compaction assembly form in different layers position and respectively roll the number of rolling in stage, are to ensure pressure
Actual effect fruit, cutting optimal is rolled using the order of " glue-steel-glue-steel ", and upper layer is entered using the order of " steel-glue-glue-steel "
Row is rolled, if producing bubble in roller compaction process, is poked with sharp thing at once and is compacted again, for road roller is compacted not
The local pave-load layer for arriving, cutting optimal uses road roller pressing using hand compaction or hand-held vibration rammer vibration compacting, upper layer
It is real.
2. the method for paving of a kind of bituminous epoxy Steel Bridge Deck according to claim 1, it is characterised in that：It is described in step
(3) carry out first pressing in after mixture laying at once, be just pressed in temperature drop and complete before to 75-80 DEG C, first pressing should be closelyed follow and paved
Machine, number of machine passes is 4-8 time, and multiple pressure 4 times should be at once carried out after the completion of first pressing, after the completion of multiple pressure should final pressure 4 times at once, final pressure should
Completed before mixture temperature drops to 50 DEG C.
3. the method for paving of a kind of bituminous epoxy Steel Bridge Deck according to claim 2, it is characterised in that：It is described in step
(3) first pressing and final pressure are all after having pressed 3 times, with infrared thermometry note surface temperature to be measured in, when surface temperature is unsatisfactory for wanting
When asking, then internal temperature is surveyed with plug-in type thermometer, when internal temperature is unsatisfactory for requiring, in addition to twice of multiple pressure, to find out original
Cause, adopts an effective measure, and prevents to occur again.
4. the method for paving of a kind of bituminous epoxy Steel Bridge Deck according to claim 2, it is characterised in that：It is described in step
(3) towards paver, from low to high, successively continuous uniform is rolled road roller driving wheel when rolling in, and the adjacent band that rolls overlaps 1/3
Wheel is wide, does not allow road roller to turn in the scope of operation, reverse end for end, and road roller is started, stops the jogging that must slow down, and is forbidden emergency brake
Braking.
5. the method for paving of a kind of bituminous epoxy Steel Bridge Deck according to claim 2, it is characterised in that：It is described in step
(3) distinguishing mark is arranged to first pressing, multiple pressure, final pressure paragraph in, is easy to driver to recognize, to rolling order, road roller combination, grinding
Pressing pass, rolling speed and roll temperature should set special hilllock management and check, record, and firmly prevent surface layer leakage and press, mixture laying
Afterwards, road roller is immediately rolled, to shorten rolling operation segment length, but not produce passage, shattered crack as principle.
6. the method for paving of a kind of bituminous epoxy Steel Bridge Deck according to claim 1, it is characterised in that：It is described in step
In 3.5 in Mechanical Spreading, manually must not repair repeatedly, but when occurring, section is undesirable, locally lack material, local mixing
When the obvious isolation of material, the obvious out-of-flatness in surface, dead material problem, conscientiously adjust under construction technical staff specific guidance, locally change
Material, carefully repairs, and with compound drop-over is spread, does not stay trace and difference.
7. the method for paving of a kind of bituminous epoxy Steel Bridge Deck according to claim 1, it is characterised in that：It is described in step
In 3.5 in paving process by special messenger to spiral distributor and hopper in " dead material " clear up, produce in paving process
Waste material, " dead material " should be concentrated and be placed in small handcart, then clean out job site, if meeting rain suddenly in paving, be stopped immediately
Construction, and the compound of non-compaction moulding is removed, non-paved mixture must be discarded all.
8. the method for paving of a kind of bituminous epoxy Steel Bridge Deck according to claim 1, it is characterised in that：It is described in step
(3) in when paving with first pressing observe and record compound workability, surface uniformity, whether there is after first pressing wheel pelmatogram situation,
And temperature when recording construction.
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| CN107815965A (en) * | 2017-10-25 | 2018-03-20 | 南京林业大学 | A kind of bridge deck pavement structure with reinforced structure |
| CN108151898A (en) * | 2018-01-05 | 2018-06-12 | 重庆大学 | A kind of steel box girder bridge simulation temperature measurement device |
| CN112482250A (en) * | 2020-11-24 | 2021-03-12 | 江苏致信桥梁检测与维修加固有限公司 | Bridge crack repairing method |
| CN114016430A (en) * | 2021-12-21 | 2022-02-08 | 中建六局水利水电建设集团有限公司 | Asphalt concrete bridge deck pavement method |
| CN117569141A (en) * | 2023-10-27 | 2024-02-20 | 保利长大工程有限公司 | Construction process for paving FAC-13 on epoxy asphalt wearing layer |
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| CN114016430B (en) * | 2021-12-21 | 2023-08-08 | 中建六局水利水电建设集团有限公司 | Asphalt concrete bridge deck pavement method |
| CN117569141A (en) * | 2023-10-27 | 2024-02-20 | 保利长大工程有限公司 | Construction process for paving FAC-13 on epoxy asphalt wearing layer |
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Application publication date: 20170510 |