CN107022954A - A kind of bridge deck water-proof tack coat, its preparation method and application - Google Patents
A kind of bridge deck water-proof tack coat, its preparation method and application Download PDFInfo
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- CN107022954A CN107022954A CN201710335363.4A CN201710335363A CN107022954A CN 107022954 A CN107022954 A CN 107022954A CN 201710335363 A CN201710335363 A CN 201710335363A CN 107022954 A CN107022954 A CN 107022954A
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- water
- modified
- tack coat
- epoxy resin
- bridge deck
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000010426 asphalt Substances 0.000 claims abstract description 95
- 239000003822 epoxy resin Substances 0.000 claims abstract description 57
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 57
- 230000004048 modification Effects 0.000 claims abstract description 42
- 238000012986 modification Methods 0.000 claims abstract description 42
- 230000001360 synchronised effect Effects 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims description 25
- 239000004568 cement Substances 0.000 claims description 17
- 239000004744 fabric Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000004593 Epoxy Substances 0.000 abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 15
- 239000010410 layer Substances 0.000 description 67
- 238000000034 method Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000001804 emulsifying effect Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 6
- 239000002356 single layer Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009408 flooring Methods 0.000 description 3
- 238000003359 percent control normalization Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 241000700605 Viruses Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
- E01C19/21—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials for simultaneously but separately applying liquid material and granular or pulverulent material, e.g. bitumen and grit, with or without spreading ; for filling grooves and gritting the filling
-
- 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
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of bridge deck water-proof tack coat, comprising two layers of emulsified asphalt modified with water-epoxy resin layer, modified pitch synchronous surface dressing is provided between two layers of emulsified asphalt modified with water-epoxy resin layer.Bridge deck water-proof tack coat of the present invention, using two layers of epoxy emulsified modified asphalt and three layers of assembled scheme of a floor height adhered modification pitch synchronous surface dressing, the combining structure of material property is given full play to, each layer function clearly, greatly improves the cohesive force and water resistance of water-proof tack coat.Invention additionally discloses a kind of preparation method of the bridge deck water-proof tack coat.Meanwhile, invention additionally discloses a kind of bridge floor for including the bridge deck water-proof tack coat.
Description
Technical field
The present invention relates to a kind of water-proof tack coat, its preparation method and application, especially a kind of bridge deck water-proof tack coat, its
Preparation method and application.
Background technology
Deck paving failure not only increases maintenance cost, influences traffic operation, and more serious consequence is by infiltration
Bridge beam body is endangered, or even brings structure safety problem.And bridge deck water-proof tack coat be deck paving engineering success or failure it is crucial because
One of element, requires there is enough cohesive forces first, otherwise viruses free stock easily occurs in deck paving；Its is secondary reliable anti-
Aqueous energy, to protect bridge structure not destroyed by water.
Existing water-proof binding Rotating fields mainly have modified emulsifying asphalt, heavy traffic paving asphalt, SBS modified pitch, rubber asphalt
Deng single-layer type structure, also there are some emulsified asphalt class single layer structures containing epoxy resin ingredient, also have some waterproof rolls and height
The single layer structures such as molecular material water-proof tack coat.These structures are primarily present two aspect problems, one is with cement concrete
Floorings cohesive force is low, and the floorings cohesive force under the single layer structure normal temperature of pitch class with cement concrete is generally less than
It is lower under 0.5Pa.s, high temperature, therefore interlaminar bonding effect is undesirable, is easily caused the viruses free stock of deck paving；The second is anti-
Aqueous energy is bad, though the high polymer material cohesive force of single layer structure is high, thickness in monolayer is thin, and cracking resistance is not enough, is easily caused
Seep water phenomenon.If construction quality guarantee, said structure can meet the water-proof binding requirement of general concrete beam bridge, but actual work
It is no lack of the bridge deck damage caused by water-proof tack coat quality problems in journey, rainwater penetrates into the phenomenon that beam body destroys agent structure
Also it is more universal.It is easier to spread bridge floor again for general bridge and repairs structure, but it is multiple to some Long spans, heavy traffic, structure
The bridge of miscellaneous (such as composite girder bridge, cable-stayed bridge, suspension bridge), the loss that water-proof tack coat failure is brought is difficult to estimate, so city
Field needs the more reliable water-proof tack coat solution of quality.
The content of the invention
Based on this, a kind of cohesive force is provided it is an object of the invention to overcome in place of above-mentioned the deficiencies in the prior art, anti-
Aqueous bridge deck water-proof tack coat that can be good.
To achieve the above object, the technical solution used in the present invention is：A kind of bridge deck water-proof tack coat, includes two layers of water
Property epoxy resin modified emulsified asphalt layer, it is same provided with modified pitch between two layers of emulsified asphalt modified with water-epoxy resin layer
Walk crushed stone sealing.
Bridge deck water-proof tack coat of the present invention is combined structure design, is bonded using the height of epoxy emulsified modified asphalt
Subsequent construction equipment can be met as operation platform and walked thereon by being not required to dispense rubble after power, high osmosis and primary solidification
The features such as construction is the characteristics of need, and high adhered modification pitch non-deformability and cohesive force are strong, water resistance is good, is combined into viscous
Knot and water resistance excellent high-performance bridge deck water-proof tack coat structure.
Bridge deck water-proof tack coat of the present invention, makes full use of the different qualities of various materials, makes water-proof tack coat overall
With excellent interlaminar bonding performance and water resistance, while being easy to construction, it is ensured that quality；Each layer function is clear and definite, first layer ring
Oxygen emulsified modified asphalt is fully infiltrated into cement concrete, and adhesion strength is high, at the same ensure touch it is dry after, subsequent construction equipment can be
Its walking construction above；Second layer high adhered modification pitch synchronous surface dressing spread quantity is big, and waterproof and resistance to deformation cracking resistance are good；
The rubble of the third layer epoxy emulsified modified asphalt parcel second layer expects that the problem of solving weak interlayer forms high-strength after solidification in vain
Spend thin layer, block pitch up to migrate, prevent bellding risk, touch it is dry after can pave bituminous concrete in face directly over, with
Upper strata asphalt and lower floor's high adhered modification pitch have very strong cohesive force, so that water-proof tack coat and asphalt
Deck paving connects into an organic whole.
Preferably, the emulsified asphalt modified with water-epoxy resin layer is made up of emulsified asphalt modified with water-epoxy resin,
The solid content of the emulsified asphalt modified with water-epoxy resin is more than 50%；The emulsified asphalt modified with water-epoxy resin it is broken
The newborn time is less than 24 hours.
It is highly preferred that the solidfied material of the emulsified asphalt modified with water-epoxy resin and bonding of the cement concrete at 25 DEG C
Power is more than 2.0MPa, and the solidfied material and cement concrete of the emulsified asphalt modified with water-epoxy resin are big in 60 DEG C of cohesive force
In 1.0PMa.
Preferably, the pitch in the modified pitch synchronous surface dressing is high adhered modification pitch, the high adhered modification drip
The blue or green dynamic viscosity at 60 DEG C is more than 20000Pa.s, and the high adhered modification pitch is less than 3Pa.s in 135 DEG C of kinematic viscosity.
It is highly preferred that the softening point of the high adhered modification pitch is more than 80 DEG C, ductility of the high adhered modification pitch at 5 DEG C
More than 30cm.Softening point is high, and ductility is big, is conducive to water resistance.
Meanwhile, the present invention also provides a kind of preparation method of above-mentioned bridge deck water-proof tack coat, comprises the following steps：
(1) one layer of emulsified asphalt modified with water-epoxy resin of spread on concrete slab, spread quantity be 0.5~
0.8kg/m2, obtain first layer emulsified asphalt modified with water-epoxy resin layer；
(2) the spread high adhered modification pitch on the first layer emulsified asphalt modified with water-epoxy resin layer after doing is touched, and together
Walk spread rubble, obtain modified pitch synchronous surface dressing, wherein, the spread quantity of the high adhered modification pitch for 1.5~
2.5kg/m2；
(3) in one layer of aqueous epoxy resins modified emulsifying drip of spread on modified pitch synchronous surface dressing obtained by step (2)
Green grass or young crops, spread quantity is 0.3~0.6kg/m2, second layer emulsified asphalt modified with water-epoxy resin layer is obtained, the bridge floor is produced and prevents
Water tack coat.
Preferably, in the step (1), before spread, in addition it is also necessary to clear up mixed with ball blast technique to concrete slab
Laitance, dust and the other debris of solidifying soil floorings.Spread equipment is cleaned after the completion of spread with clear water, is spilt in order to avoid being blocked after caking
Distribution system；Strict protection scene is answered after the completion of epoxy emulsified modified asphalt spread, must not there is any type of mechanical damage and dirt
Dye.
Preferably, the emulsified asphalt modified with water-epoxy resin in the step (1) and step (3) by two kinds into packet
Into, it must complete to clean spread equipment with clear water after the completion of spread, spread in 2 hours after two kinds of composition mixing, in order to avoid caking
Spread system is blocked afterwards.
Preferably, in the step (2), the spread temperature of the high adhered modification pitch is 175 DEG C~195 DEG C.Work as spread
When temperature is less than 175 DEG C, it is impossible to ensure that spread is uniform；When spread temperature is higher than 195 DEG C, modified pitch aging influences its property
Energy.
Preferably, in the step (2), the particle diameter of the rubble is 5mm~10mm, and the spread quantity of the rubble is full paving
The 60%~70% of amount.Hand inspection and the rubble of excessive spread is removed after the completion of spread, the rubble Lou spread is supplied, finally with light
Type dual-steel wheel road roller static pressure one time, completes synchronous surface dressing working procedure.
Preferably, in the step (2) modified pitch synchronous surface dressing preparation, the aqueous asphalt mixtures modified by epoxy resin in step (1)
Completed after the completion of fat modified emulsifying asphalt spread in 72 hours.
In addition, the present invention also provides a kind of bridge floor for including above-mentioned bridge deck water-proof tack coat.
Preferably, to be further ensured that bridge floor quality, mating formation for the bridge floor can be in the modified drip of second layer epoxy emulsification
Blue or green spread 24 hours touch it is dry after proceed by, and must be completed in 72 hours after second layer epoxy emulsified modified asphalt spread
Deck paving lower floor paves.
Relative to prior art, beneficial effects of the present invention are：
Bridge deck water-proof tack coat of the present invention, it is same using two layers of epoxy emulsified modified asphalt and a floor height adhered modification pitch
Three layers of assembled scheme of crushed stone sealing are walked, the combining structure of material property is given full play to, each layer function clearly, greatly improves waterproof
Tack coat cohesive force and water resistance, compared with some grand bridges are using pouring asphalt layer protectiving scheme, with obvious warp
Ji property and technical quality reliability.
Brief description of the drawings
Fig. 1 is a kind of structural representation of bridge deck water-proof tack coat of the present invention；
Fig. 2 includes a kind of structural representation of the bridge floor of the bridge deck water-proof tack coat for the present invention；
Wherein, 1, emulsified asphalt modified with water-epoxy resin layer；2nd, modified pitch synchronous surface dressing；3rd, water-base epoxy tree
Fat modified emulsifying asphalt layer；4th, bridge deck water-proof tack coat；5th, bridge deck pavement；6th, cement concrete bridge deck layer.
Embodiment
To better illustrate the object, technical solutions and advantages of the present invention, below in conjunction with the drawings and specific embodiments pair
The present invention is described further.
Embodiment 1
A kind of embodiment of bridge deck water-proof tack coat of the present invention, the structure of bridge deck water-proof tack coat described in the present embodiment
As shown in figure 1, including two layers of emulsified asphalt modified with water-epoxy resin layer 1 and 3, two layers of aqueous epoxy resins modified emulsifying
Modified pitch synchronous surface dressing 2 is provided between bitumen layer 1 and 3.
The emulsified asphalt modified with water-epoxy resin layer is made up of emulsified asphalt modified with water-epoxy resin, described aqueous
The solid content of epoxy resin modified emulsified asphalt is more than 50%；The demulsification time of the emulsified asphalt modified with water-epoxy resin is small
In 24 hours, the cohesive force of the solidfied material of the emulsified asphalt modified with water-epoxy resin with cement concrete at 25 DEG C was more than
2.0MPa, the cohesive force of the solidfied material of the emulsified asphalt modified with water-epoxy resin with cement concrete at 60 DEG C is more than
1.0PMa。
Pitch in the modified pitch synchronous surface dressing is high adhered modification pitch, and the high adhered modification pitch is at 60 DEG C
Dynamic viscosity be more than 20000Pa.s, the high adhered modification pitch is less than 3Pa.s in 135 DEG C of kinematic viscosity, described high viscous to change
Property pitch softening point be more than 80 DEG C, the high adhered modification pitch 5 DEG C ductility be more than 30cm.
The preparation method of bridge deck water-proof tack coat described in the present embodiment, comprises the following steps：
(1) laitance, dust and the other debris of concrete slab are cleared up with ball blast technique；
(2) first layer (epoxy emulsified modified asphalt)：Spread quantity 0.5kg/m2；Spread is cleaned after the completion of spread with clear water to set
It is standby, in order to avoid spread system is blocked after caking；Strict protection scene is answered after the completion of epoxy emulsified modified asphalt spread, must not be had any
The mechanical damage of form and pollution.
(3) second layer (high adhered modification pitch synchronous surface dressing)：First layer (epoxy emulsified modified asphalt) spread 24 is small
When touch it is dry after, start to use synchronous macadam seal paver spread high adhered modification pitch, and synchronous spread rubble；High adhered modification pitch
Spread quantity is 1.5kg/m2, spread temperature is 175 DEG C；The ballast grain sizes of synchronous spread are 5mm, it is necessary to which washing is clean without dust,
60% control of the spread quantity to be abound with；Hand inspection and the rubble of excessive spread is removed after the completion of spread, supplies the rubble Lou spilt,
It is last with light-duty dual-steel wheel road roller static pressure one time, complete synchronous surface dressing working procedure；The process must be in first layer ring
Completed in 72 hours after oxygen emulsified modified asphalt spread.
(4) third layer (epoxy emulsified modified asphalt)：With the material and work used in first layer (epoxy emulsified modified asphalt)
Skill is identical, but spread quantity is 0.3kg/m2；Same strict protection scene, must not there is any type of mechanical damage and pollution.
The cohesive force that the present embodiment surveys with cement concrete at 25 DEG C is more than 2.2MPa, is more than in 60 DEG C of cohesive forces
1.3MPa；And the cohesive force of general 25 DEG C of water-proof tack coat is less than 0.5MPa, it is less than 0.2MPa in 60 DEG C of cohesive forces.
A kind of bridge floor for including bridge deck water-proof tack coat described in the present embodiment of the present embodiment, structural representation as shown in Fig. 2
The design of bridge deck pavement 5 can be carried out on tack coat 4, mating formation for bridge floor can be spilt in second layer epoxy emulsified modified asphalt
Cloth 24 hours touch it is dry after proceed by, and bridge floor must be completed in 72 hours after second layer epoxy emulsified modified asphalt spread
Mat formation the paving of lower floor.
Embodiment 2
A kind of embodiment of bridge deck water-proof tack coat of the present invention, the structure of bridge deck water-proof tack coat described in the present embodiment
As shown in figure 1, including two layers of emulsified asphalt modified with water-epoxy resin layer 1 and 3, two layers of aqueous epoxy resins modified emulsifying
Modified pitch synchronous surface dressing 2 is provided between bitumen layer 1 and 3.
The emulsified asphalt modified with water-epoxy resin layer is made up of emulsified asphalt modified with water-epoxy resin, described aqueous
The solid content of epoxy resin modified emulsified asphalt is more than 50%；The demulsification time of the emulsified asphalt modified with water-epoxy resin is small
In 24 hours, the cohesive force of the solidfied material of the emulsified asphalt modified with water-epoxy resin with cement concrete at 25 DEG C was more than
2.0MPa, the cohesive force of the solidfied material of the emulsified asphalt modified with water-epoxy resin with cement concrete at 60 DEG C is more than
1.0PMa。
Pitch in the modified pitch synchronous surface dressing is high adhered modification pitch, and the high adhered modification pitch is at 60 DEG C
Dynamic viscosity be more than 20000Pa.s, the high adhered modification pitch is less than 3Pa.s in 135 DEG C of kinematic viscosity, described high viscous to change
Property pitch softening point be more than 80 DEG C, the high adhered modification pitch 5 DEG C ductility be more than 30cm.
The preparation method of bridge deck water-proof tack coat described in the present embodiment, comprises the following steps：
(1) laitance, dust and the other debris of concrete slab are cleared up with ball blast technique；
(2) first layer (epoxy emulsified modified asphalt)：Spread quantity is 0.7kg/m2；After the completion of spread spread is cleaned with clear water
Equipment, in order to avoid spread system is blocked after caking；Strict protection scene is answered after the completion of epoxy emulsified modified asphalt spread, must not have and appoint
The mechanical damage of what form and pollution.
(3) second layer (high adhered modification pitch synchronous surface dressing)：First layer (epoxy emulsified modified asphalt) spread 24 is small
When touch it is dry after, start to use synchronous macadam seal paver spread high adhered modification pitch, and synchronous spread rubble；High adhered modification pitch
Spread quantity is 2.5kg/m2, spread temperature is between 195 DEG C；The ballast grain sizes of synchronous spread are 10mm, it is necessary to wash clean nothing
Dust, 70% control of the spread quantity to be abound with；Hand inspection and the rubble of excessive spread is removed after the completion of spread, supply what is Lou spilt
Rubble, finally with light-duty dual-steel wheel road roller static pressure one time, completes synchronous surface dressing working procedure；The process must be first
Completed in 72 hours after layer epoxy emulsified modified asphalt spread.
(4) third layer (epoxy emulsified modified asphalt)：With the material and work used in first layer (epoxy emulsified modified asphalt)
Skill is identical, but spread quantity is 0.5kg/m2；Same strict protection scene, must not there is any type of mechanical damage and pollution.
The cohesive force that the present embodiment surveys with cement concrete at 25 DEG C is more than 2.5MPa, is more than in 60 DEG C of cohesive forces
1.4MPa；And the cohesive force of general 25 DEG C of water-proof tack coat is less than 0.5MPa, it is less than 0.2MPa in 60 DEG C of cohesive forces.
A kind of bridge floor for including bridge deck water-proof tack coat described in the present embodiment of the present embodiment, structural representation as shown in Fig. 2
The design of bridge deck pavement 5 can be carried out on tack coat 4, mating formation for bridge floor can be spilt in second layer epoxy emulsified modified asphalt
Cloth 24 hours touch it is dry after proceed by, and bridge floor must be completed in 72 hours after second layer epoxy emulsified modified asphalt spread
Mat formation the paving of lower floor.
Embodiment 3
A kind of embodiment of bridge deck water-proof tack coat of the present invention, the structure of bridge deck water-proof tack coat described in the present embodiment
As shown in figure 1, including two layers of emulsified asphalt modified with water-epoxy resin layer 1 and 3, two layers of aqueous epoxy resins modified emulsifying
Modified pitch synchronous surface dressing 2 is provided between bitumen layer 1 and 3.
The emulsified asphalt modified with water-epoxy resin layer is made up of emulsified asphalt modified with water-epoxy resin, described aqueous
The solid content of epoxy resin modified emulsified asphalt is more than 50%；The demulsification time of the emulsified asphalt modified with water-epoxy resin is small
In 24 hours, the cohesive force of the solidfied material of the emulsified asphalt modified with water-epoxy resin with cement concrete at 25 DEG C was more than
2.0MPa, the cohesive force of the solidfied material of the emulsified asphalt modified with water-epoxy resin with cement concrete at 60 DEG C is more than
1.0PMa。
Pitch in the modified pitch synchronous surface dressing is high adhered modification pitch, and the high adhered modification pitch is at 60 DEG C
Dynamic viscosity be more than 20000Pa.s, the high adhered modification pitch is less than 3Pa.s in 135 DEG C of kinematic viscosity, described high viscous to change
Property pitch softening point be more than 80 DEG C, the high adhered modification pitch 5 DEG C ductility be more than 30cm.
The preparation method of bridge deck water-proof tack coat described in the present embodiment, comprises the following steps：
(1) laitance, dust and the other debris of concrete slab are cleared up with ball blast technique；
(2) first layer (epoxy emulsified modified asphalt)：Spread quantity is 0.8kg/m2；After the completion of spread spread is cleaned with clear water
Equipment, in order to avoid spread system is blocked after caking；Strict protection scene is answered after the completion of epoxy emulsified modified asphalt spread, must not have and appoint
The mechanical damage of what form and pollution.
(3) second layer (high adhered modification pitch synchronous surface dressing)：First layer (epoxy emulsified modified asphalt) spread 24 is small
When touch it is dry after, start to use synchronous macadam seal paver spread high adhered modification pitch, and synchronous spread rubble；High adhered modification pitch
Spread quantity is 2kg/m2, spread temperature is between 185 DEG C；The ballast grain sizes of synchronous spread are 8mm, it is necessary to which washing is clean without powder
Dirt, 65% control of the spread quantity to be abound with；Hand inspection and the rubble of excessive spread is removed after the completion of spread, supply Lou spill broken
Stone, finally with light-duty dual-steel wheel road roller static pressure one time, completes synchronous surface dressing working procedure；The process must be in first layer
Completed in 72 hours after epoxy emulsified modified asphalt spread.
(4) third layer (epoxy emulsified modified asphalt)：With the material and work used in first layer (epoxy emulsified modified asphalt)
Skill is identical, but spread quantity is 0.6kg/m2；Same strict protection scene, must not there is any type of mechanical damage and pollution.
The cohesive force that the present embodiment surveys with cement concrete at 25 DEG C is more than 2.1MPa, is more than in 60 DEG C of cohesive forces
1.2MPa；And the cohesive force of general 25 DEG C of water-proof tack coat is less than 0.5MPa, it is less than 0.2MPa in 60 DEG C of cohesive forces.
A kind of bridge floor for including bridge deck water-proof tack coat described in the present embodiment of the present embodiment, structural representation as shown in Fig. 2
The design of bridge deck pavement 5 can be carried out on tack coat 4, mating formation for bridge floor can be spilt in second layer epoxy emulsified modified asphalt
Cloth 24 hours touch it is dry after proceed by, and bridge floor must be completed in 72 hours after second layer epoxy emulsified modified asphalt spread
Mat formation the paving of lower floor.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should
Understand, technical scheme can be modified or equivalent substitution, without departing from the essence of technical solution of the present invention
And scope.
Claims (10)
1. a kind of bridge deck water-proof tack coat, it is characterised in that include two layers of emulsified asphalt modified with water-epoxy resin layer, described two
Modified pitch synchronous surface dressing is provided between layer emulsified asphalt modified with water-epoxy resin layer.
2. bridge deck water-proof tack coat as claimed in claim 1, it is characterised in that the emulsified asphalt modified with water-epoxy resin
Layer is made up of emulsified asphalt modified with water-epoxy resin, and the solid content of the emulsified asphalt modified with water-epoxy resin is more than
50%；The demulsification time of the emulsified asphalt modified with water-epoxy resin is less than 24 hours.
3. bridge deck water-proof tack coat as claimed in claim 2, it is characterised in that the emulsified asphalt modified with water-epoxy resin
Solidfied material and cement concrete in 25 DEG C of cohesive force be more than 2.0MPa, the emulsified asphalt modified with water-epoxy resin is consolidated
Cohesive force of the compound with cement concrete at 60 DEG C is more than 1.0PMa.
4. bridge deck water-proof tack coat as claimed in claim 1, it is characterised in that in the modified pitch synchronous surface dressing
Pitch is high adhered modification pitch, and the high adhered modification pitch is more than 20000Pa.s, the high adhered modification in 60 DEG C of dynamic viscosity
Pitch is less than 3Pa.s in 135 DEG C of kinematic viscosity.
5. bridge deck water-proof tack coat as claimed in claim 4, it is characterised in that the softening point of the high adhered modification pitch is more than
80 DEG C, the high adhered modification pitch is more than 30cm in 5 DEG C of ductility.
6. a kind of preparation method of bridge deck water-proof tack coat as described in any one of Claims 1 to 5, it is characterised in that including
Following steps：
(1) one layer of emulsified asphalt modified with water-epoxy resin of spread on concrete slab, spread quantity is 0.5kg/m2~
0.8kg/m2, obtain first layer emulsified asphalt modified with water-epoxy resin layer；
(2) the spread high adhered modification pitch on the first layer emulsified asphalt modified with water-epoxy resin layer after doing is touched, and synchronously spilling
Cloth rubble, obtains modified pitch synchronous surface dressing, wherein, the spread quantity of the high adhered modification pitch is 1.5kg/m2~
2.5kg/m2；
(3) one layer of emulsified asphalt modified with water-epoxy resin of spread on step (2) gained modified pitch synchronous surface dressing, spills
Cloth amount is 0.3kg/m2~0.6kg/m2, second layer emulsified asphalt modified with water-epoxy resin layer is obtained, the bridge deck water-proof is produced
Tack coat.
7. the preparation method of bridge deck water-proof tack coat as claimed in claim 6, it is characterised in that described in the step (2)
The spread temperature of high adhered modification pitch is 175 DEG C~195 DEG C.
8. the preparation method of bridge deck water-proof tack coat as claimed in claim 6, it is characterised in that described in the step (2)
The particle diameter of rubble is 5mm~10mm, and the spread quantity of the rubble is the 60%~70% of full paving amount.
9. the preparation method of bridge deck water-proof tack coat as claimed in claim 6, it is characterised in that modified in the step (2)
The preparation of pitch synchronous surface dressing, in step (1) after the completion of emulsified asphalt modified with water-epoxy resin spread in 72 hours
Complete.
10. a kind of bridge floor for including any one of the Claims 1 to 5 bridge deck water-proof tack coat.
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| CN201710335363.4A CN107022954A (en) | 2017-05-12 | 2017-05-12 | A kind of bridge deck water-proof tack coat, its preparation method and application |
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