CN108558269A - A kind of note formula conductive asphalt concrete, deck installation structure and method for paving - Google Patents

A kind of note formula conductive asphalt concrete, deck installation structure and method for paving Download PDF

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Publication number
CN108558269A
CN108558269A CN201810041621.2A CN201810041621A CN108558269A CN 108558269 A CN108558269 A CN 108558269A CN 201810041621 A CN201810041621 A CN 201810041621A CN 108558269 A CN108558269 A CN 108558269A
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layer
asphalt concrete
cast
conductive asphalt
deck
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CN108558269B (en
Inventor
陈谦
王朝辉
问鹏辉
赵建雄
傅豪
傅一
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Changan University
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Changan University
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02Macromolecular compounds
    • C04B26/26Bituminous materials, e.g. tar, pitch
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/12Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125Grating or flooring for bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075Uses not provided for elsewhere in C04B2111/00 for road construction

Abstract

The invention discloses a kind of note formula conductive asphalt concrete, deck installation structure and method for paving, a kind of cast-type conductive asphalt concrete bridge deck pavement structure includes asphalt-mastic-broken stone concrete layer, glutinous layer, cast-type conductive asphalt concrete layer, waterproof heat-insulating layer, erosion resistant coating and steel bridge deck from top to bottom.The present invention can ensure pavement structure integrality as main pave-load layer using cast-type conductive asphalt concrete in energization, temperature rise effect is uniform and stable, bridge floor deicing or snow melting function is effectively improved, deck paving cold cracking is alleviated, ensures the current safety of bridge floor driving.

Description

A kind of note formula conductive asphalt concrete, deck installation structure and method for paving
Technical field
The invention belongs to deck paving field of engineering technology, and in particular to a kind of note formula conductive asphalt concrete, bridge floor paving Assembling structure and method for paving.
Background technology
In recent years, Large Span Bridges are built up in succession, are had in deck system structure, Orthotropic Steel Bridge Deck system relies on The advantages that its component quality is light, short construction period, strong lateral wind loading rating is widely used.Cast asphalt concrete (GA) because It is preferred to become steel deck paving package material with good impermeability, ageing resistance, crack resistance at low-temperature and deformation compliance.Many realities It is still inevitable common while body engineering experience shows cast asphalt concrete steel deck paving mounted in guarantee excellent properties The common fault that deck installation structure is influenced by ambient temperature, bridge floor accumulated snow icing phenomenon is serious, traffic accident incidence is high.
The deicing or snow melting of Steel Bridge Deck is mainly using the methods of artificial, machinery, spreading deicing salt at present, wherein artificial process is imitated Rate is low, Mechanical Method easy damaged road surface, dispenses the perishable reinforcing bar of chloride salt deicing salt, pollution environment.And the conduction prepared at this stage Concrete (CA) temperature rise effect is uniform and stable, snow melt is timely and is not necessarily to suspend traffic, and deck paving cold cracking can be effectively relieved, But there is some problems with operation stage for existing construction:Conducting concrete paves, in roller compaction process, inside lay in advance Block type electrode is easily subject to crushing, ineffective;During deicing or snow melting, the water of ice dissolution penetrates into inside concrete and easily causes conduction Layer short circuit;Water power contacts in galvanization, is unfavorable for vehicle and pedestrains safety.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide note formula conductive asphalt concrete, bridge floor paving Assembling structure and method for paving, the paving structure can effectively improve bridge floor deicing or snow melting function, ensure the current safety of bridge floor driving.
In order to achieve the above objectives, a kind of note formula conductive asphalt concrete pitch of the present invention, coarse aggregate, fine aggregate, mine Powder and carbon fiber, the pitch are composite modified asphalt, and bitumen aggregate ratio is 9%~10%, and carbon fiber content is 0.6%~1.0%, Composite modified asphalt includes SBS (I-D) types modified pitch, natural lake asphalt and thinner, SBS (I-D) type modified pitch:Naturally Lake asphalt:Thinner=(70~75):(25~30):(1.5~1.8), the quality percentage that mineral aggregate passes through following sieve pore: 13.2mm sieve pore:The sieve pore of 99.97~100%, 9.5mm:The sieve pore of 95.98~98.9%, 4.75mm:70.7~ The sieve pore of 73.1%, 2.36mm:The sieve pore of 53.2~54.8%, 1.18mm:The sieve pore of 44.9~46.3%, 0.6mm:38.5~ The sieve pore of 40.0%, 0.3mm:The sieve pore of 32.3~33.8%, 0.15mm:The sieve pore of 28.8~30.5%, 0.075mm:25.3 ~26.4%.
Further, SBS (I-D) type modified pitch:Natural lake asphalt:Thinner=75:25:1.5.
A kind of note formula conductive asphalt concrete deck installation structure, including the bitumastic set gradually from top to bottom are broken Stone concrete layer, adhesion coating, cast-type conductive asphalt concrete layer, waterproof heat-insulating layer, erosion resistant coating and steel bridge deck;Cast-type is conductive Conductive material is provided in asphalt concrete layer from top to bottom and dispenses layer and electrode, waterproof heat-insulating layer includes that the double-deck epoxy resin is anti- Water layer and the rubber asphalt sand gel buffer layer being arranged on the double-deck epoxy resin waterproof layer.
Further, cast-type conductive asphalt concrete layer is spread by note formula conductive asphalt concrete described in claim 1 If forming.
Further, electrode there are two being oppositely arranged at same bridge floor.
Further, electrode is L-shaped sheet electrodes.
Further, distance of the electrode lower face away from cast-type conductive asphalt concrete layer lower face drips for cast-type conduction The 50%~60% of green concrete layer thickness.
Further, the first temperature sensor, conductive asphalt concrete are provided in asphalt-mastic-broken stone concrete layer It is provided with second temperature sensor in layer.
A kind of note formula conductive asphalt concrete deck paving method, which is characterized in that include the following steps:
Step 1 carries out derusting by sandblasting processing to Steel Bridge Deck;
Step 2, the brushing epoxy zinc-rich erosion resistant coating on the Steel Bridge Deck through derusting by sandblasting;
The double-deck epoxy resin waterproof layer is laid in step 3, the Steel Bridge Deck after brushing erosion resistant coating, then in the double-deck asphalt mixtures modified by epoxy resin The rubber asphalt sand gel buffer layer that 3mm~5mm is overlayed on fat waterproof layer, forms waterproof heat-insulating layer;
Step 4 is laid with cast-type conductive asphalt concrete layer on waterproof heat-insulating layer, and cast-type conduction is first perfused in when laying Bituminous concrete is laid electrode 7 when the 50%~60% of perfusion to cast-type conductive asphalt concrete layer thickness, is then perfused Concrete to 3 thickness of cast-type conductive asphalt concrete layer 75%~80% when dispense carbon fiber, spreading amount is 110~ 230g/m2, continue concrete perfusion after the completion of dispensing until the preparation of cast-type conductive asphalt concrete layer 3 is completed;
After step 5, formula conductive asphalt concrete layer to be cast perfusion are completed and be molded, 5mm~10mm premixed macadams 5 are dispensed ~8kg/m2, and interlayer punishment is carried out, spread sticking layer oil forms adhesion coating;
Step 6 is laid with 35mm~40mm modified stone mastic asphalt concrete layers on adhesion coating.
Further, during asphalt mastic-broken stone concrete layer and cast-type conductive asphalt concrete layer, The first temperature sensor and are laid in asphalt-mastic-broken stone concrete layer and cast-type conductive asphalt concrete layer respectively Two sensors.
Compared with prior art, the present invention at least has technique effect beneficial below, and the present invention provides a kind of note formulas Conductive asphalt concrete for the first time merges two kinds of techniques of cast-type concrete and conducting concrete, and it is conductive to carry out cast-type The preparation of bituminous concrete, it is proposed that be suitable for the composite modified asphalt formula and synthesis grade of cast-type conductive asphalt concrete Match, efficiently solves most important two in two kinds of different process fusion process of cast asphalt concrete and conductive asphalt concrete A problem prepares conductive asphalt concrete to realize cast-type technique.The cast-type conductive asphalt concrete of the present invention is certainly Body also possesses good water resistance, can prevent short circuit and insecurity caused by water power contact.
A kind of note formula conductive asphalt concrete deck installation structure provided by the invention, mainly there is two big advantages, on the one hand, In cast-type conductive asphalt concrete layer, left and right sides electrode, interelectrode conductive material, conductive material dispense layer and outside Electric power generating composition connection circuit net.After powering on, electrode, conductive material and conductive material dispense layer energization heat production, at this point, electric energy It is converted into thermal energy, when can realize sleety weather, bridge floor temperature under power on condition gradually rises, and temperature rise effect is uniformly steady It is fixed, both can timely deicing or snow melting ensure the traffic safety of bridge without suspending traffic;Deck paving can be effectively relieved again Cold cracking.On the other hand, since the oilstone of cast-type conductive asphalt concrete is bigger, bitumen content is more, causes itself Mobility is preferable, can after paving without roll can self-compaction, reach compaction requirement, in this way can to avoid electrode by Compacting machinary rolls destruction, while being conducive to the smooth progress for the construction process such as electrode in concrete is embedded, conductive material dispenses.
Secondly, it compared to other existing deck installation structures, is added to layer of conductive material and dispenses layer, it in this way can be Under the premise of not destroying cast-type conductive asphalt concrete layer overall structure and correlated performance, increase the additive amount of conductive material; Currently used small-sized block type electrode is changed to the sheet type electrode of large-size simultaneously, expands electrode surface heat production face Product.Both the above measure improves the conductive temperature rise effect of cast-type conductive asphalt concrete.In addition, conductive material dispenses layer It is made of carbon fiber, the good flexibility of fiber itself strengthens the phases such as the low-temperature cracking-resistance, weatherability, impact resistance of concrete Performance is closed, bridge operation stage bridge floor traffic load can be effectively buffered and squeeze, impacts caused by electrode;Sheet type electrode area Increase, thickness is thinning, is also beneficial to guard electrode.
Description of the drawings
Fig. 1 is sectional view of the deck installation structure along bridge floor extending direction;
Fig. 2 is deck installation structure along the sectional view perpendicular to bridge floor extending direction;
Fig. 3 is electrode schematic diagram;
In attached drawing:1- asphalt-mastic-broken stone concrete layers, 2- adhesion coatings, 3- cast-type conductive asphalt concrete layers, 4- are anti- Water thermal insulation layer, 5- erosion resistant coatings, 6- steel bridge decks, 7- electrodes, 8- conductive materials dispense layer, 9- temperature sensors, 10- bilayer epoxies Resin waterproof layer, 11- rubber asphalt sand gel buffer layers.
Specific implementation mode
Specific embodiments of the present invention are given below, it should be noted that the invention is not limited in implement in detail below Example, it is every according to the technology of the present invention essence to made by following embodiment it is any it is simple modification, change and equivalent structure transformation, It is still within the scope of the technical scheme of the invention.
In compliance with the above technical solution, as shown in Figure 1, the present embodiment provides a kind of cast-type conductive asphalt concrete Steel Bridge Deck Paving structure, including the asphalt-mastic-broken stone concrete layer 1, adhesion coating 2, the cast-type conductive asphalt that set gradually from top to bottom are mixed Soil layer 3, waterproof heat-insulating layer 4, erosion resistant coating 5 and steel bridge deck 6 are coagulated, the first temperature is provided in asphalt-mastic-broken stone concrete layer 1 Spend sensor 91;Conductive material is provided in cast-type conductive asphalt concrete layer 3 from top to bottom and dispenses layer 8,7 and of several electrodes Second temperature sensor 92, waterproof heat-insulating layer 4 include the double-deck epoxy resin waterproof layer 10 and rubber asphalt being arranged from bottom to top Mastic buffer layer 11.First temperature sensor 91 and second temperature sensor 92 are respectively used to record and to transmit bitumastic broken 1 face of stone concrete layer layer and conductive asphalt concrete layer 3 temperature change, by temperature change adjust heat source heating time and Heating power ensures under the premise of energy-efficient, timely and effectively completes the deicing or snow melting of bridge floor, improves bridge traffic efficiency and peace Quan Xing.
The thickness of cast-type conductive asphalt concrete layer 3 is 30mm~35mm, and pitch used is composite modified asphalt, oilstone Than being 9%~10%, optimum oil-stone ratio 9.75%.Coarse aggregate used is high-quality basalt, and fine aggregate is limestone machine-made sand, Miberal powder is fat lime rock miberal powder, and mixed conductive paste material is carbon fiber, and volume is 0.6%~1.0%.Cast-type conductive asphalt The grading of concrete uses GCA-10, as shown in table 1.
1 GCA-10 gradings of table
It is basic pitch that composite modified asphalt, which chooses SBS type modified pitch, by mix match the natural lake asphalt of certain proportion and Thinner prepares composite modified asphalt, and specific ratio is SBS:TLA:Sasobit thinners=::.
Conductive material dispenses layer 8 and uses carbon fiber, spreading amount 110g/m2~230g/m2, effect is can to pour into a mould On the basis of the original conductive heating of formula conductive asphalt concrete itself, its effect is further increased.
For asphalt-mastic-broken stone concrete layer 1 using the modification SMA of 35mm~40mm thickness, pitch used is that SBS types change Property pitch, asphalt optimum content 6.2%.Coarse aggregate used is high-quality basalt, and fine aggregate is limestone machine-made sand, and miberal powder is Fat lime rock miberal powder.Mixed fiber is lignin fibre, has good temperature stability and chemical stability, acid and alkali-resistance rotten Corrosion is good, and volume is 0.2%~0.4%.The grading of modified SMA is using modified SMA-13, as shown in table 2.
Table 2 is modified SMA-13 gradings
Adhesion coating 2 uses modified emulsifying asphalt adhesion coating, modified emulsifying asphalt to use SBR modified emulsifying asphalts 0.3kg/m2~ 0.5kg/m2, while dispensing 5mm~10mm premixed macadams 5kg/m2~8kg/m2
Waterproof heat-insulating layer 4 includes the double-deck epoxy resin waterproof layer 10 and is arranged in double-deck 10 upper surface of epoxy resin waterproof layer 3mm~5mm rubber asphalt sand gel buffer layer 11.Wherein, the double-deck epoxy resin waterproof layer 10 include epoxy resin upper layer and Epoxy resin lower layer, adapted are respectively epoxy resin 500g/m2~600g/m2+ 1.18mm~2.36mm rubbles 500g/m2~ 800g/m2With epoxy resin 200g/m2~300g/m2+ 0.3mm~0.6mm rubbles 300g/m2~400g/m2.With 3mm~5mm rubbers Mastic proportioning is rubber asphalt in glue bitumastic buffer layer:Limestone dust=30:70.
5 material of erosion resistant coating uses epoxy zinc-rich paint, coating weight 180g/m2~220g/m2
The thickness of steel bridge deck 6 is 12mm~14mm.
With reference to Fig. 2, electrode 7 is sheet type aluminium electrode, is laid in inside conductive asphalt concrete after folding is L-shaped.Electrode 7 Vertical height D1 and transverse width be 25mm, distance of 7 lower face of electrode away from 3 lower face of conductive asphalt concrete layer is to lead The 50%~60% of 3 thickness of electric asphalt concrete layer.
In energization, this deck installation structure can ensure pavement structure integrality, and temperature rise effect is uniform and stable, has Effect improves bridge floor deicing or snow melting function, alleviates deck paving cold cracking, ensures the current safety of bridge floor driving.
A kind of method for paving of cast-type conductive asphalt concrete Steel Bridge Deck, includes the following steps:
Step 1 carries out derusting by sandblasting processing to Steel Bridge Deck 6, until bridge floor cleannes reach Sa2.5 grades, roughness 50~ 100μm;
Step 2, the brushing epoxy zinc-rich erosion resistant coating 5 on the Steel Bridge Deck 6 through derusting by sandblasting, coating weight 180g/m2~ 220g/m2
The double-deck epoxy resin waterproof layer 10 is laid in step 3, the Steel Bridge Deck after brushing erosion resistant coating, then in the double-deck epoxy The rubber asphalt sand gel buffer layer 11 that 3mm~5mm is overlayed on resin waterproof layer 10, forms waterproof heat-insulating layer 4;
Step 4 is laid with cast-type conductive asphalt concrete layer 3 on waterproof heat-insulating layer 4, and when laying, cast-type is first perfused Conductive asphalt concrete lays the second temperature when at perfusion to the 40%~50% of 3 thickness of cast-type conductive asphalt concrete layer Sensor 92 is spent, lays L-type aluminium electrode 7 when being perfused to the 50%~60% of 3 thickness of cast-type conductive asphalt concrete layer, then Concrete perfusion to 3 thickness of cast-type conductive asphalt concrete layer 75%~80% when dispense carbon fiber, spreading amount 110g/ m2~230g/m2, continue concrete perfusion after the completion of dispensing until the preparation of cast-type conductive asphalt concrete layer 3 is completed;
After step 5, formula conductive asphalt concrete layer 3 to be cast perfusion are completed and be molded, 5~10mm premixed macadams 5 are dispensed ~8kg/m2, and interlayer punishment is carried out, spread sticking layer oil;
Step 6 is laid with 35mm~40mm asphalt-mastic-broken stones concrete layer 1 on adhesion coating 2, and away from surface 4mm- The first temperature sensor 91 is laid at 6mm, is covered with modified stone mastic asphalt concrete, is so far completed cast-type and is led Electric bituminous concrete bridge deck pavement structure is mated formation.
Embodiment 1
In compliance with the above technical solution, as shown in Figure 1, the present embodiment provides a kind of cast-type conductive asphalt concrete Steel Bridge Deck Paving structure, including the asphalt-mastic-broken stone concrete layer 1, adhesion coating 2, the cast-type conductive asphalt that set gradually from top to bottom are mixed Soil layer 3, waterproof heat-insulating layer 4, erosion resistant coating 5 and steel bridge deck 6 are coagulated, the first temperature is provided in asphalt-mastic-broken stone concrete layer 1 Spend sensor 91;8, two, conductive material spreading layer is provided in cast-type conductive asphalt concrete layer 3 from top to bottom to set relatively The electrode 7 and second temperature sensor 92 set, waterproof heat-insulating layer 4 include the double-deck epoxy resin waterproof layer 10 being arranged from bottom to top With the rubber asphalt sand gel buffer layer 11 of 4mm.
It is composite modified asphalt that cast-type conductive asphalt concrete, which uses 35mmGCA, pitch used, and bitumen aggregate ratio is 9.75%.Coarse aggregate used is high-quality basalt, and fine aggregate is limestone machine-made sand, and miberal powder is fat lime rock miberal powder, is mixed Conductive material is carbon fiber, volume 0.8%.The grading of cast-type conductive asphalt concrete uses GCA-10, as shown in table 1.
1 GCA-10 gradings of table
It is basic pitch that composite modified asphalt, which chooses SBS type modified pitch, by mix with natural lake asphalt and thinner come Composite modified asphalt is prepared, specific ratio is SBS:TLA:Thinner=75 Sasobit:25:1.5.
Conductive material dispenses layer 8 and uses carbon fiber, spreading amount 170g/m2, effect is can be dripped in cast-type conduction On the basis of the original conductive heating of green concrete itself, its effect is further increased.
Asphalt-mastic-broken stone concrete layer 1 is modified SMA using 40mm, and pitch used is SBS type modified pitch, best to drip Green dosage is 6.2%.Coarse aggregate used is high-quality basalt, and fine aggregate is limestone machine-made sand, and miberal powder is fat lime rock mine Powder.Mixed fiber is lignin fibre, has good temperature stability and chemical stability, acid-alkali-corrosive-resisting is good, volume It is 0.3%.Grading is using modified SMA-13, as shown in table 2.
Table 2 is modified SMA-13 gradings
Adhesion coating 2 uses modified emulsifying asphalt adhesion coating, modified emulsifying asphalt to use SBR modified emulsifying asphalts 0.4kg/m2, Dispense 8mm premixed macadams 6kg/m simultaneously2
Waterproof heat-insulating layer 4, including the double-deck epoxy resin waterproof layer 10 and setting are in double-deck 10 upper table of epoxy resin waterproof layer The rubber asphalt sand gel buffer layer 11 of the 4mm in face.Wherein, the double-deck epoxy resin waterproof layer 10 includes epoxy resin upper layer and epoxy Resin lower layer, adapted are respectively epoxy resin 550g/m2+ 1.18~2.36mm rubbles 650g/m2With epoxy resin 250g/m2+ 0.3~0.6mm rubbles 350g/m2.It is rubber asphalt with mastic proportioning in 4mm rubber asphalt sand gel buffer layers:Limestone dust =30:70, caking property is more preferable, and rubble is equivalent to shear connector, can improve degree of adhesion.
5 material of erosion resistant coating uses epoxy zinc-rich paint, coating weight 200g/m2
The thickness of steel bridge deck 6 is 13mm.
With reference to Fig. 2, electrode 7 is sheet type aluminium electrode, is laid in inside conductive asphalt concrete after folding is L-shaped.Electrode 7 Vertical height D1 and transverse width be 25mm, distance of 7 lower face of electrode away from 3 lower face of conductive asphalt concrete layer is to lead The 55% of 3 thickness of electric asphalt concrete layer.
In energization, this deck installation structure can ensure pavement structure integrality, and temperature rise effect is uniform and stable, has Effect improves bridge floor deicing or snow melting function, alleviates deck paving cold cracking, ensures the current safety of bridge floor driving.
A kind of method for paving of cast-type conductive asphalt concrete Steel Bridge Deck, includes the following steps:
Step 1 carries out derusting by sandblasting processing to Steel Bridge Deck 6, until bridge floor cleannes reach Sa2.5 grades, roughness 50~ 100μm;
Step 2, the brushing epoxy zinc-rich erosion resistant coating 5 on the Steel Bridge Deck 6 through derusting by sandblasting, coating weight are 180~220g/ m2
It is laid with the double-deck epoxy resin waterproof layer 10 in step 3, the Steel Bridge Deck after brushing erosion resistant coating, and overlays 4mm rubber Bitumastic buffer layer 11 forms waterproof heat-insulating layer 4;
Step 4 is laid with 35mm cast-type conductive asphalt concretes layer 3 on waterproof heat-insulating layer 4, and when laying, first perfusion is poured Note formula conductive asphalt concrete lays second temperature sensor 92 when at perfusion to 17.5mm, L is laid when being perfused to 20mm Type aluminium electrode 7, then at concrete perfusion to 30mm when dispense carbon fiber, spreading amount is 110~230g/m2, after the completion of spreading Continue concrete perfusion until cast-type conductive asphalt concrete layer 3 prepares completion;
After step 5, formula conductive asphalt concrete layer 3 to be cast perfusion are completed and be molded, 7.5mm premixed macadams are dispensed in time 6.5kg/m2, and interlayer punishment is carried out, spread sticking layer oil;
Step 6 is laid with 40mm asphalt-mastic-broken stones concrete layer 1 on adhesion coating 2, and away from the laying 5mm of surface at the One temperature sensor 91, is covered with modified stone mastic asphalt concrete, so far completes cast-type conductive asphalt coagulation Native bridge deck pavement structure is mated formation.
Embodiment 2
The present embodiment provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, in the present embodiment, cast-type conductive asphalt concrete The bitumen aggregate ratio of cast-type conductive asphalt concrete used in layer 3 is 9%, SBS type modified pitch:Natural lake asphalt:Thinner= 70:25:1.5, carbon fiber content 0.6%, it is 110g/m that carbon fiber, which dispenses layer spreading amount,2
Embodiment 3
The present embodiment provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, in the present embodiment, cast-type conductive asphalt concrete The bitumen aggregate ratio of cast-type conductive asphalt concrete used in layer 3 is 9.5%, SBS type modified pitch:Natural lake asphalt:Thinner =72:22:1.6, carbon fiber content 0.7%, it is 230g/m that carbon fiber, which dispenses layer spreading amount,2
Embodiment 4
The present embodiment provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, in the present embodiment, cast-type conductive asphalt concrete The bitumen aggregate ratio of cast-type conductive asphalt concrete used in layer 3 is 10%, SBS type modified pitch:Natural lake asphalt:Thinner= 75:25:1.8, carbon fiber content 0.6%, it is 110g/m that carbon fiber, which dispenses layer spreading amount,2
Embodiment 5
The present embodiment provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in the present embodiment Carbon fiber content is 0.6% in layer.
Embodiment 6
The present embodiment provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in the present embodiment Carbon fiber content is 0.6% in layer, and it is 230g/m that carbon fiber, which dispenses layer spreading amount,2
Embodiment 7
The present embodiment provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in the present embodiment Carbon fiber content is 1.0% in layer, and it is 110g/m that carbon fiber, which dispenses layer spreading amount,2
Embodiment 8
The present embodiment provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in the present embodiment Carbon fiber content is 1.0% in layer.
Embodiment 9
The present embodiment provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in the present embodiment Carbon fiber content is 1.0% in layer, and it is 230g/m that carbon fiber, which dispenses layer spreading amount,2
Comparative example 1
This comparative example provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, compared with Example 1, difference It is only in that, cast-type conductive asphalt concrete layer is replaced by cast asphalt concrete layer in this comparative example, that is, is not spiked with Carbon fiber also dispenses layer without carbon fiber.
Comparative example 2
This comparative example provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in this comparative example Carbon fiber, volume 0.8% are only added in layer, no carbon fiber dispenses layer.
Comparative example 3
This comparative example provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in this comparative example Carbon fiber is not spiked in layer, it is 170g/m that carbon fiber, which dispenses layer spreading amount,2
Comparative example 4
This comparative example provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in this comparative example Carbon fiber is not spiked in layer, no carbon fiber dispenses layer, but multi-disc copper mesh is vertically placed in concrete structure.
Comparative example 5
This comparative example provides a kind of cast-type conductive asphalt concrete bridge deck pavement structure, the cast-type with embodiment 1 Conductive asphalt concrete bridge deck pavement structure is compared, and is differed only in, cast-type conductive asphalt concrete in this comparative example Carbon fiber is not spiked in layer, no carbon fiber dispenses layer, but multi-disc copper mesh is laterally placed in concrete structure.
Performance test:
1, pavement performance is tested, steady mainly for the high-temperature behavior, cryogenic property and water of cast-type conductive asphalt concrete Performance is tested, and is molded track plate test specimen by preparation, is carried out wheel tracking test, cold bending rupture test and freeze thawing to it and split Experiment is split, specific test result is as shown in table 3.
3 different schemes pavement performance of table
2, deicing or snow melting measure of merit, mainly by test cast-type conductive asphalt concrete different structure layer temperature and Change ice efficiency.It is molded track plate test specimen by preparation, 500ml water is poured on test specimen, puts it into artificial climate incubator -5 8h in DEG C environment records by the first temperature sensor 91 and transmits the temperature change of asphalt-mastic-broken stone concrete layer 1, leads to It crosses second temperature sensor 92 and records the 3 middle portion temperature variation of cast-type conductive asphalt concrete layer, as shown in table 4.
Change ice efficiency calculation and ignore the resistance conductive layer value variation caused by temperature change in the process, energization period is with face layer Ice-out stops, ice and snow specific heat capacity 2.05kJ/ (kgK), ice and snow heat of fusion 334kJ/kg, and the quality of ice is 0.46kg, changes ice effect Rate result of calculation is as shown in table 5.
Each structure sheaf temperature rise effect of 4 different schemes paving structure of table
5 different schemes ice efficiency of table
Remarks:Voltage U=54V, resistance R=213 Ω, power P=U2/ R=13.69W.
From table 3 it can be seen that compared to 1~5 test specimen of comparative example, the dynamic stability of Examples 1 to 9 test specimen is some higher, Corresponding high-temperature stability is more preferable;The flexural-tensile strain of Examples 1 to 9 test specimen is some higher, and corresponding low-temperature stability is more preferable;It is real The freeze thawing intensity splitting for applying 1~9 test specimen of example is more some higher than (TSR), and corresponding water stability is more preferable.In conclusion explanation is poured Note formula conductive asphalt concrete after adding carbon fiber and laying carbon fiber spreading layer, do not decay by concrete pavement performance, It improves to some extent instead;Wherein, 1 effect of embodiment is most apparent.
From table 4 with table 5 as can be seen that comparing 1~5 test specimen of comparative example, each structure sheaf heating of Examples 1 to 9 test specimen is imitated Fruit and the change equal higher of ice efficiency, illustrate the electric conductivity of cast-type conductive asphalt concrete as carbon fiber content and carbon fiber are spread The increase of layer of cloth spreading amount and gradually increase, wherein carbon fiber dispense layer spreading amount influence be greater than carbon fiber content.Comparison Examples 1 to 9 test specimen, each structure sheaf temperature rise effect and change ice efficiency of embodiment 1,3,9 are more preferable.
Based on above-mentioned 2 the performance test results, concrete pavement performance and electric conductivity are considered, embodiment 1 is most Good embodiment.

Claims (10)

1. a kind of note formula conductive asphalt concrete, which is characterized in that including pitch, coarse aggregate, fine aggregate, miberal powder and carbon fiber, The pitch is composite modified asphalt, and bitumen aggregate ratio is 9%~10%, and carbon fiber content is 0.6%~1.0%, composite modified drip Blueness includes SBS (I-D) types modified pitch, natural lake asphalt and thinner, SBS (I-D) type modified pitch:Natural lake asphalt:Drop Stick=(70~75):(25~30):(1.5~1.8), the quality percentage that mineral aggregate passes through following sieve pore:13.2mm sieve pore: The sieve pore of 99.97~100%, 9.5mm:The sieve pore of 95.98~98.9%, 4.75mm:The sieve of 70.7~73.1%, 2.36mm Hole:The sieve pore of 53.2~54.8%, 1.18mm:The sieve pore of 44.9~46.3%, 0.6mm:The sieve of 38.5~40.0%, 0.3mm Hole:The sieve pore of 32.3~33.8%, 0.15mm:The sieve pore of 28.8~30.5%, 0.075mm:25.3~26.4%.
2. a kind of note formula conductive asphalt concrete according to claim 1, which is characterized in that SBS (I-D) type is modified drip It is green:Natural lake asphalt:Thinner=75:25:1.5.
3. a kind of note formula conductive asphalt concrete deck installation structure, which is characterized in that including the drip set gradually from top to bottom Green mastic-broken stone concrete layer (1), adhesion coating (2), cast-type conductive asphalt concrete layer (3), waterproof heat-insulating layer (4), anti-corrosion Layer (5) and steel bridge deck (6);Conductive material is provided in cast-type conductive asphalt concrete layer (3) from top to bottom and dispenses layer (8) With electrode (7), waterproof heat-insulating layer (4) includes the double-deck epoxy resin waterproof layer (10) and is arranged in the double-deck epoxy resin waterproof layer (10) the rubber asphalt sand gel buffer layer (11) on.
4. a kind of note formula conductive asphalt concrete deck installation structure according to claim 3, which is characterized in that cast-type Conductive asphalt concrete layer (3) is laid with by note formula conductive asphalt concrete described in claim 1.
5. a kind of note formula conductive asphalt concrete deck installation structure according to claim 3, which is characterized in that same bridge Electrode (7) there are two being oppositely arranged at face.
6. a kind of note formula conductive asphalt concrete deck installation structure according to claim 3, which is characterized in that electrode (7) it is L-shaped sheet electrodes.
7. a kind of note formula conductive asphalt concrete deck installation structure according to claim 3, which is characterized in that electrode (7) distance of the lower face away from cast-type conductive asphalt concrete layer (3) lower face is that cast-type conductive asphalt concrete layer (3) is thick The 50%~60% of degree.
8. a kind of note formula conductive asphalt concrete deck installation structure according to claim 3, which is characterized in that pitch agate The first temperature sensor (91) is provided in hoof fat crushed stones concrete layer (1), conductive asphalt concrete layer is provided with second in (3) Temperature sensor (92).
9. a kind of note formula conductive asphalt concrete deck paving method, which is characterized in that include the following steps:
Step 1 carries out derusting by sandblasting processing to Steel Bridge Deck (6);
Step 2, the brushing epoxy zinc-rich erosion resistant coating (5) on the Steel Bridge Deck (6) through derusting by sandblasting;
The double-deck epoxy resin waterproof layer (10) is laid in step 3, the Steel Bridge Deck after brushing erosion resistant coating, then in the double-deck asphalt mixtures modified by epoxy resin The rubber asphalt sand gel buffer layer (11) that 3mm~5mm is overlayed on fat waterproof layer (10), forms waterproof heat-insulating layer (4);
Step 4 is laid with cast-type conductive asphalt concrete layer (3) on waterproof heat-insulating layer (4), and when laying is first perfused cast-type and leads Electric bituminous concrete is laid electrode 7 when the 50%~60% of perfusion to cast-type conductive asphalt concrete layer (3) thickness, is connect Concrete perfusion to 3 thickness of cast-type conductive asphalt concrete layer 75%~80% when dispense carbon fiber, spreading amount 110 ~230g/m2, continue concrete perfusion after the completion of dispensing until the preparation of cast-type conductive asphalt concrete layer 3 is completed;
After step 5, formula conductive asphalt concrete layer (3) to be cast perfusion are completed and be molded, 5mm~10mm premixed macadams 5 are dispensed ~8kg/m2, and interlayer punishment is carried out, spread sticking layer oil forms adhesion coating (2);
Step 6 is laid with 35mm~40mm modified stone mastic asphalts concrete layer (1) on adhesion coating (2).
10. a kind of note formula conductive asphalt concrete deck paving method according to claim 9, which is characterized in that spreading If during asphalt-mastic-broken stone concrete layer (1) and cast-type conductive asphalt concrete layer (3), respectively in bitumastic The first temperature sensor (91) and the second sensing are laid in crushed stone concrete layer (1) and cast-type conductive asphalt concrete layer (3) Device (92).
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