CN109577108A - A kind of track plates of anti-stray current and preparation method thereof - Google Patents
A kind of track plates of anti-stray current and preparation method thereof Download PDFInfo
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- CN109577108A CN109577108A CN201910017883.XA CN201910017883A CN109577108A CN 109577108 A CN109577108 A CN 109577108A CN 201910017883 A CN201910017883 A CN 201910017883A CN 109577108 A CN109577108 A CN 109577108A
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- track plates
- frp
- uhpc
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- aluminate cement
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/34—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing cold phosphate binders
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
- E01B1/005—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with sleeper shoes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to field of road traffic, especially a kind of track plates of anti-stray current and preparation method thereof.Including track plates main body, two column tracks are arranged in track plates body upper surface, the injected hole of penetrating orbit plate is set between two column tracks in track plates main body, track plates bottom is arranged in the lower part of the track plates main body, FRP tendons net, entire track plates external coating emulsified asphalt coating are set in track plates main body；The material of the track plates main body is phosphor aluminate cement base UHPC, and the material of the track plates bottom is that phosphor aluminate cement base UHPC adds 30% emulsified asphalt.Calcium hydroxide is free of in phosphor aluminate cement hydrated product, alkali soluble will not occur in urban track traffic wet environment to go wrong, durability is more preferable, and phosphor aluminate cement has the characteristics that high-early-strength, height are early strong, production cycle, save the cost are substantially shorter using the cement.
Description
Technical field
The invention belongs to field of road traffic, especially a kind of track plates of anti-stray current and preparation method thereof.
Background technique
DC electric railroad electric current can cause buried knot nearby by the stray electrical current that the line of return (rail etc.) leaks into the earth
Structure object, such as the corrosion of running water pipe, gas pipe, cable and reinforced concrete structures.Due to the extension of electric railroad route, bear
The variation of the layouts such as garage, substation in the increase of lotus, subway system, the form of stray electrical current become complicated.China's early stage is emerging
The subway system built has led to the problem of stray current corrosion, is badly in need of solving.
The patent of the patent No. 201110024724.6 proposes a kind of suitable for the spuious with highly resistance of railway traffic engineering
The concrete material of electrolytic corrosion ability, high corrosion resistance of chloride ion ability and highly resistance graphitic corrosion ability, solves to a certain extent
Etching problem of the stray electrical current to substructure, but complex manufacturing technology, and have ignored the Insulation Problems of reinforcing bar.The patent No.
201210002590.2 patent propose the current drainage control device of DC traction return-flow system stray electrical current a kind of, make underground metalliferous
Stray electrical current in structure or metallic conduit returns to the cathode cabinet of electric substation by the equipment, reduces the corrosion of stray electrical current.
This patent is merely able to reduce the dissipation of stray electrical current, but cannot completely eliminate harm caused by stray current corrosion, cannot be from source
Stray electrical current is solved the problems, such as on head.The patent of the patent No. 200920141725.7 is applied by longitudinal reinforcement in track plates using insulation
Layer reinforcing bar realizes the insulating properties of track plates.Coated reinforcement is in lifting, processing (bending), carrying, binding and concrete placement
In all be easy can be damaged coating the problem of, influence insulation effect, while coated reinforcement higher cost.The patent No.
201710339120.8 patent proposes a kind of anti-stray electrical current low resistance rail of subway material and its production method, passes through drop
Low C, Si, Mn member usually reduces rail resistance rate, and addition V, Mn, Cu alloying element improves rail strength and hardness.But it can only drop
Low rail of subway stray electrical current cannot achieve the purpose that completely eliminate stray electrical current to traffic hazard index.Patent No.
201711137021.8 patent propose a kind of fragment-free track slab framework of steel reinforcement insulation system, solve vertical, horizontal in track plates
Influence problem of the reinforcing bar to track circuit, but not can solve the Insulation Problems of concrete, it not can solve stray current corrosion problem.
In general, the above method is unfavorable for being mass produced there are at high cost, complex manufacturing technology, and " temporary solution is not controlled
This " the problem of, the generation of stray electrical current can only be reduced, cannot be avoided risk completely.
Summary of the invention
Technical problem solved by the invention is to provide a kind of track plates and preparation method thereof of anti-stray current.
The technical solution for realizing the aim of the invention is as follows:
Two column tracks are arranged in a kind of track plates of anti-stray current, including track plates main body, track plates body upper surface,
The injected hole of penetrating orbit plate is set between two column tracks in track plates main body, and track is arranged in the lower part of the track plates main body
Board bottom layer sets FRP tendons net, entire track plates external coating emulsified asphalt coating in track plates main body；The track plates main body
Material is phosphor aluminate cement base UHPC, and the material of the track plates bottom is that phosphor aluminate cement base UHPC adds 30% emulsification
Pitch.
The FRP tendons net includes FRP transverse bar, the vertical muscle of FRP and FRP supporting rib；
The FRP transverse bar and FRP indulge muscle interlaced arrangement and form one layer of FRP tendons net, and the FRP tendons net includes upper and lower two layers
FRP tendons net, upper and lower two layers of FRP tendons Netcom cross FRP supporting rib and are connected as one, the FRP transverse bar of upper and lower two layers of FRP tendons net with
FRP indulges muscle point of intersection and FRP supporting rib and ties up fixation by plastic ties.
The FRP tendons are one of GFRP, AFRP tendons, and the plastic ties are nylon rope.
The phosphor aluminate cement base UHPC group become phosphor aluminate cement, silicon ash, fly ash micro-sphere, nanometer calcium carbonate,
Repeat glass particle, PVA fiber, poly- carboxylic water-reducing agent, borax, water.
The phosphor aluminate cement, silicon ash, fly ash micro-sphere, nanometer calcium carbonate, repeat glass particle, PVA fiber, poly- carboxylic
Water-reducing agent, borax, water mass ratio be respectively 34.69%~34.91%, 4.96%~6.55%, 2.18%~9.91%,
0.50%~1.31%, 39.25%~43.64%, 0.64%~0.85%, 0.52%~0.74%, 0.49%~1.31%,
8.42%~9.32%.
The phosphor aluminate cement is 52.5 grades and the above strength grade, silicon ash SiO295% or more content, flyash is micro-
Bead diameter is less than less than 3 μm, activity index 110%, nanometer calcium carbonate average grain diameter 25-25nm, repeat glass grain diameter
2.5mm, PVA fiber are that elasticity modulus is greater than 260cN/dtex, length 12mm monfil, polycarboxylate water-reducer water-reducing rate 30%
More than, borax is technical grade.
The emulsified asphalt is one of cationic, anionic or non-ionic emulsified asphalt.
A kind of preparation method of above-mentioned track plates, includes the following steps:
(1) UHPC mixture and the UHPC mixture mixed with 30% emulsified asphalt are prepared；
(2) track plates are poured, FRP tendons net is put into mold in the prefabricated pvc pipe in default slip casting hole site by assembling die, will
The UHPC mixture and UHPC mixture mixed with 30% emulsified asphalt prepared is successively poured into mold, in mold from bottom to up
Track, track plates main body and track plates bottom are sequentially formed, pvc pipe, the position of pvc pipe are pulled out after UHPC mixture final set
Form injected hole；
(3) after standing 1-2 days, demoulding, track plates external coating emulsified asphalt coating, by 80-100 DEG C of steam of track plates
Maintenance 26-60 hours or natural environment maintenance one week.
The step (1) specifically comprises the following steps:
It (a) will load weighted phosphor aluminate cement, silicon ash, nanometer calcium carbonate, fly ash micro-sphere, repeat glass according to the ratio
Grain merging concrete mixer mixing 1min~2min；
(b) load weighted polycarboxylate water-reducer, borax and water it will be mixed into uniform mixed liquor according to the ratio, will be stirred in concrete
Under machine stirring be added half mixed liquor, stir 3min~4min, add residual mixed liquor and continue stir 3min~
4min；
(c) PVA fiber is sprinkled under blender stirring, stirs 1min~2min, obtains phosphor aluminate cement base
UHPC, for use；
(d) 30% emulsified asphalt is added in phosphor aluminate cement base UHPC, is stirred 1min~2min, is obtained mixed with 30%
The UHPC mixture of emulsified asphalt, for use.
Compared with prior art, the present invention its remarkable advantage is as follows:
(1) calcium hydroxide is free of in phosphor aluminate cement hydrated product, will not be sent out in urban track traffic wet environment
Raw alkali soluble goes wrong, and durability is more preferable, and phosphor aluminate cement has the characteristics that high-early-strength, height are early strong, uses the cement
It is substantially shorter production cycle, save the cost；
(2) by using the organic fiber of high elastic modulus, FRP tendons, make inside track plates not metal-containing material, do not dropping
In the case where low UHPC mechanical property, the electric conductivity of track plates is greatly reduced；
(3) so that bottom is insulated by adding emulsified asphalt in the UHPC in bottom, prevent stray electrical current from conducting downwards, pass through
Track plates entire surface brushing emulsified asphalt further ensures the insulating properties of track plates.
Present invention is further described in detail with reference to the accompanying drawing.
Detailed description of the invention
The track plates schematic perspective view of Fig. 1 the application.
Fig. 2 is the A-A diagrammatic cross-section of Fig. 1.
Fig. 3 the application FRP tendons net schematic diagram.
The track plates bottom view of Fig. 4 the application.
Description of symbols:
1- emulsified asphalt coating, 2- track, 3- injected hole, 4- track plates main body, 5-FRP transverse bar, 6-FRP indulge muscle, 7-
Track plates bottom, 8-FRP supporting rib, 9- plastic ties.
Specific embodiment
Ordinary reinforced concrete and traditional UHPC material internal have steel mesh or a large amount of metallic fiber, have aggravated miscellaneous
The transmission of electric current is dissipated, and there is the problems such as production length curing cycle, curing condition is harsh, by the present invention in that with no electric conductivity
High elastic modulus organic fiber, blending whole plate external coating emulsified asphalt further makes track in FRP tendons and board bottom material
Plate insulation solves the harm of stray electrical current by blocking transmission channel.And by using with high-early-strength, high early strong function
The phosphor aluminate cement of energy shortens production curing cycle, improves efficiency, save the cost.
[embodiment -1] phosphor aluminate cement is that Zibo Yun He coloured cement Co., Ltd produces, 52.5 grades；Silicon ash is upper
The production of Hai Shengkuo construction material Co., Ltd, SiO295% or more content；Fly ash micro-sphere is Lingshou County Thailand ditch between fields mineral products processing
Factory's production, partial size is less than 3 μm, 110% or more 28d activity index；Nanometer calcium carbonate is raw for Zhejiang Tianyi New Materials Co., Ltd
It produces, average grain diameter 50nm；Repeat glass particle is the production of Changzhou Bao Gu glassware Co., Ltd, and partial size is not more than 2.5mm；
PVA fiber is that Anhui Province ties up the production of Co., Ltd, group, and it is fine that elasticity modulus is greater than 260cN/dtex, length 12mm monofilament
Dimension；Poly- carboxylic water-reducing agent is Jiangsu Subotexin Material Co., Ltd's production, 30% or more water-reducing rate；Borax is that Shanghai is preferably prosperous
Chemical Co., Ltd.'s production, technical grade；FRP tendons are the production of Nantong Hu Yu glass fiber reinforced plastics product Co., Ltd, XY61-22 type, diameter
22mm, ultimate tensile strength 800MPa；Emulsified asphalt is the production of the Guangdong Mao Nan osmanthus road asphalt station, anionic.
Phosphor aluminate cement base UHPC preparation method
1. will load weighted phosphor aluminate cement, silicon ash, nanometer calcium carbonate, fly ash micro-sphere, repeat glass according to the ratio
Grain merging concrete mixer mixing 1min~2min；
2. load weighted polycarboxylate water-reducer, borax and water uniform mixed liquor will be mixed into according to the ratio, stirred in concrete
Under machine stirring be added half mixed liquor, stir 3min~4min, add residual mixed liquor and continue stir 3min~
4min。
3. being sprinkled into PVA fiber under blender stirring, 1min~2min is stirred, phosphor aluminate cement base is obtained
UHPC, for use.
[embodiment -1]-[embodiment -3] formula is shown in Table 1, and preparation process is identical.
[comparative example -1]-[comparative example -4] formula is shown in Table 1, and preparation process is identical.
Each embodiment and comparative example the results are shown in Table 2
Table 1
Table 2
Phosphor aluminate cement base UHPC material of the invention reaches mecystasis i.e. using molding of vibrating, UHPC mixture
Can, design mechanical property meets GB/T 31387-2015 " Reactive Powder Concrete " RPC160 performance requirement, i.e. resistance to compression, anti-folding
Intensity is respectively >=160MPa, 22MPa.
Comparative example 1,2,3, phosphor aluminate cement, silicon ash, fly ash micro-sphere, nanometer calcium carbonate, repeat glass particle,
PVA fiber, poly- carboxylic water-reducing agent, borax, water, each component mass ratio is respectively 34.69%~34.91%, 4.96%~
2.18%~9.91%, 0.50%~1.31%, 39.25%~43.64%, 0.64%~0.85%, 0.52% 6.55% ,~
0.74%, 0.49%~1.31%, 8.42%~9.32% when performance meet the requirements.
Comparative example 1 and comparative example 1, when being lower than 8.42% with water ratio, when low with water ratio, UHPC resistance to compression, anti-folding
Intensity improves, but the slump is 0, is unable to moulding by casting；Comparative example 2 and comparative example 2, after being higher than 8.73% with water ratio,
Be conducive to fluidity with water ratio increase to improve, but compression strength is unsatisfactory for requiring.Comparative example 1 and comparative example 3, silicon ash ratio
After example is lower than 4.96%, the slump is improved, but compression strength is unsatisfactory for requiring, and comparative example 2 is in comparative example 4, silicon ash ratio
After 6.55%, resistance to compression, flexural strength are improved, but the slump is 0, is unable to moulding by casting.It is with water ratio and silicon ash ratio
Governing factor, as long as in the reasonable scope with water and the control of silicon ash ratio, UHPC performance is met the requirements.
As shown in Figs 1-4, the track plates of the anti-stray current include track plates main body 4, and 4 upper surface of track plates main body is set
Two column tracks 2 are set, the injected hole 3 of penetrating orbit plate, the track plates are set between two column tracks 2 in track plates main body 4
Track plates bottom 7 is arranged in the lower part of main body 4, sets FRP tendons net, entire track plates external coating emulsified asphalt in track plates main body 4
Coating 1；The material of the track plates main body 4 is phosphor aluminate cement base UHPC, and the material of the track plates bottom 7 is phosphorus aluminic acid
Salt cement base UHPC adds 30% emulsified asphalt.
The FRP tendons net includes FRP transverse bar 5, the vertical muscle 6 of FRP and FRP supporting rib 8；
The FRP transverse bar 5 and FRP indulge 6 interlaced arrangement of muscle and form one layer of FRP tendons net, and the FRP tendons net includes upper and lower two
Layer FRP tendons net, upper and lower two layers of FRP tendons Netcom crosses FRP supporting rib 8 and is connected as one, the FRP transverse bar 5 of upper and lower two layers of FRP tendons net
6 point of intersection of muscle is indulged with FRP and FRP supporting rib 8 ties up fixation by plastic ties.
When prepared by track plates, it will first be assembled with the mold that track 2 constructs, in the default prefabricated PVC in slip casting hole site
FRP transverse bar 5 and FRP are indulged muscle 6 and the plastic ties 9 of FRP supporting rib 8 are bundled into FRP tendons net, FRP tendons net is put into mold by pipe,
Successively be poured into mold by the UHPC mixture prepared and mixed with the UHPC mixture of 30% emulsified asphalt, in mold from down toward
On sequentially form track 2, track plates main body 4 and track plates bottom 7, pull out pvc pipe, pvc pipe after UHPC mixture final set
Position formed injected hole 3.After standing 1 day, demoulding, track plates external coating emulsified asphalt coating steams track plates with 90 DEG C
Vapour conserves 48 hours or natural environment conserves one week.
Claims (9)
1. a kind of track plates of anti-stray current, which is characterized in that including track plates main body (4), track plates main body (4) upper surface
Two column tracks (2) are set, the injected hole (3) of penetrating orbit plate is set between two column tracks (2) in track plates main body (4),
Track plates bottom (7) are arranged in the lower part of the track plates main body (4), set FRP tendons net, entire track plates in track plates main body (4)
External coating emulsified asphalt coating (1)；The material of the track plates main body (4) is phosphor aluminate cement base UHPC, the track
The material of board bottom layer (7) is that phosphor aluminate cement base UHPC adds 30% emulsified asphalt.
2. track plates according to claim 1, which is characterized in that the FRP tendons net includes FRP transverse bar (5), the vertical muscle of FRP
(6) and FRP supporting rib (8)；
The FRP transverse bar (5) and FRP indulge muscle (6) interlaced arrangement and form one layer of FRP tendons net, and the FRP tendons net includes upper and lower two
Layer FRP tendons net, upper and lower two layers of FRP tendons Netcom crosses FRP supporting rib (8) and is connected as one, and the FRP of upper and lower two layers of FRP tendons net is horizontal
Muscle (5) and FRP indulge muscle (6) point of intersection and FRP supporting rib (8) and tie up fixation by plastic ties.
3. track plates according to claim 2, which is characterized in that the FRP tendons are one of GFRP, AFRP tendons, institute
Stating plastic ties is nylon rope.
4. track plates according to claim 1, which is characterized in that the phosphor aluminate cement base UHPC group becomes phosphorus aluminic acid
Salt cement, silicon ash, fly ash micro-sphere, nanometer calcium carbonate, repeat glass particle, PVA fiber, poly- carboxylic water-reducing agent, borax, water.
5. track plates according to claim 4, which is characterized in that the phosphor aluminate cement, silicon ash, fly ash micro-sphere,
Nanometer calcium carbonate, repeat glass particle, PVA fiber, poly- carboxylic water-reducing agent, borax, water mass ratio be respectively 34.69%~
34.91%, 4.96%~6.55%, 2.18%~9.91%, 0.50%~1.31%, 39.25%~43.64%, 0.64%
~0.85%, 0.52%~0.74%, 0.49%~1.31%, 8.42%~9.32%.
6. track plates according to claim 4, which is characterized in that the phosphor aluminate cement is 52.5 grades and the above intensity
Grade, silicon ash SiO295% or more content, for fly ash micro-sphere partial size less than 3 μm, activity index 110%, nanometer calcium carbonate is average
Partial size 25-25nm, repeat glass grain diameter are less than 2.5mm, and PVA fiber is that elasticity modulus is greater than 260cN/dtex, length
12mm monfil, 30% or more polycarboxylate water-reducer water-reducing rate, borax is technical grade.
7. track plates according to claim 1, which is characterized in that the emulsified asphalt be cationic, anionic or
One of non-ionic emulsified asphalt.
8. a kind of preparation method of the described in any item track plates of claim 1-7, which comprises the steps of:
(1) UHPC mixture and the UHPC mixture mixed with 30% emulsified asphalt are prepared；
(2) track plates are poured, FRP tendons net is put into mold in the prefabricated pvc pipe in default injected hole (3) position by assembling die, will
The UHPC mixture and UHPC mixture mixed with 30% emulsified asphalt prepared is successively poured into mold, in mold from bottom to up
Track (2), track plates main body (4) and track plates bottom (7) are sequentially formed, pulls out pvc pipe after UHPC mixture final set,
The position of pvc pipe forms injected hole (3)；
(3) after standing 1-2 days, demoulding, track plates external coating emulsified asphalt coating (1), by 80-100 DEG C of steam of track plates
Maintenance 26-60 hours or natural environment maintenance one week.
9. according to the method described in claim 8, it is characterized in that, the step (1) specifically comprises the following steps:
(a) it load weighted phosphor aluminate cement, silicon ash, nanometer calcium carbonate, fly ash micro-sphere, repeat glass particle will set according to the ratio
Enter concrete mixer mixing 1min~2min；
(b) load weighted polycarboxylate water-reducer, borax and water it will be mixed into uniform mixed liquor according to the ratio, will be stirred in concrete mixer
The mixed liquor that half is added under state is mixed, 3min~4min is stirred, add residual mixed liquor and continues to stir 3min~4min；
(c) PVA fiber is sprinkled under blender stirring, stirs 1min~2min, obtains phosphor aluminate cement base UHPC, to
With；
(d) 30% emulsified asphalt is added in phosphor aluminate cement base UHPC, stirs 1min~2min, is obtained mixed with 30% emulsification
The UHPC mixture of pitch, for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910017883.XA CN109577108A (en) | 2019-01-09 | 2019-01-09 | A kind of track plates of anti-stray current and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910017883.XA CN109577108A (en) | 2019-01-09 | 2019-01-09 | A kind of track plates of anti-stray current and preparation method thereof |
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ID=65916369
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