CN104294728B - Prefabricated road deck of assembled RPC unreinforced and preparation method thereof - Google Patents
Prefabricated road deck of assembled RPC unreinforced and preparation method thereof Download PDFInfo
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- CN104294728B CN104294728B CN201410483774.4A CN201410483774A CN104294728B CN 104294728 B CN104294728 B CN 104294728B CN 201410483774 A CN201410483774 A CN 201410483774A CN 104294728 B CN104294728 B CN 104294728B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/08—Reinforced units with steel frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
- B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/32—Superplasticisers
-
- 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
- E01C2201/00—Paving elements
- E01C2201/06—Sets of paving elements
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
A kind of prefabricated unreinforced RPC road deck and manufacture method, plate body is the plate of material being made by RPC, it is equipped with one layer of horizontal wire net respectively near upper bottom surface in RPC plate of material, and is respectively provided with a lifting built-in fitting vertically communicated, that two ends all can connect suspender four corners.Control the fluidity of RPC during making, make road deck indeformable in post production process, and in Indoor Natural maintenance, make road deck total quality be guaranteed.Compared with Common Concrete Pavement plate, road deck structure unreinforced of the present invention, thickness is little, and build is light lightweight, it is simple to transport and installation, and reusable；Intensity is high, wear-resisting, bearing capacity is high, and shock resistance, anti-fatigue performance are good, and good weatherability, quick construction is efficient, can be widely applied in the road construction in temporary building living area.
Description
Technical field
The present invention relates to pavement construction technical field, prefabricated road deck of RPC particularly relating to a kind of high intensity and preparation method thereof.
Background technology
RPC (ReactivePowderConcrete), it is called for short RPC, it it is a kind of novel concrete based composites, this material is invented by Bouygues company of France the nineties at first, produce through ad hoc approach condition, there is the feature of superhigh intensity, excellent durability, have broad application prospects in the engineerings such as oil, nuclear power, municipal administration, ocean and military installations.Foreign applications engineering mainly has the Sherbrooke of Quebec, Canada, First prestressing force RPC structure overpass in the world, France's engineering such as Cattenom nuclear power station, one the arch form overpass in South Korea Seoul, China is then mainly used in high ferro Line for Passenger Transportation footpath cover plate, baffle plate and some military installations etc., increasing gradually in recent years of other field application.But technique is not yet applied on assembled road deck, also without corresponding manufacture method.
There is some problem following when application in the prefabricated road deck of existing ordinary reinforced concrete: (1) comprcssive strength is not high, installing/dismounting and in use procedure component the phenomenon of corner breakage easily occurs；(2) flexural strength is not high, easily occurs the phenomenon that road deck ruptures in use procedure；(3) adopt thermal curing mode be easy to the demoulding early and lifting, it is necessary to energy consumption higher；(4) the prefabricated road deck component thickness of ordinary reinforced concrete of same planar dimension is big, and build is heavy, is not easy to repeatedly repeat to install and use, transport；(5) concrete durability is poor；(6) road deck needs built-in hanger when making, and needs cutting hanging piece when form removal is dispatched from the factory, and operation is loaded down with trivial details.
Summary of the invention
Present invention aim at providing a kind of assembled prefabricated road deck of RPC unreinforced and preparation method thereof, solve that ordinary reinforced concrete prefabricated road deck intensity in prior art is not high, easily there is breakage in installing/dismounting and use procedure, fracture, thermal curing technology that quick form removal need to adopt high energy consumption and the problem that is not easy to field fabrication；Also solve prevailing roadway plate containing arrangement of reinforcement, component thickness is big, build is heavy, be not easy to repeatedly use time installation and transportation problem；Solve existing RPC manufacturing process at the scene very easily occurs that fluidity is too small simultaneously, cause the later stage build difficulty or fluidity is excessive, cause molding after lifting time the deformation of member cause the technical problem of quality of production de-stabilising effect integral construction quality；Additionally, also solve existing road deck to need the problem that built-in hanger, form removal need cutting hanging piece when dispatching from the factory, operation is loaded down with trivial details, waste time and energy when making.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that:
A kind of assembled prefabricated road deck of RPC unreinforced, including road deck plate body, it is characterised in that: the inside of described road deck plate body, close upper bottom surface are covered with one layer of horizontal wire net respectively；The lifting built-in fitting of four corners of described road deck plate body pre-buried vertically communicated road deck plate body respectively, described lifting built-in fitting is the internally threaded sleeve being cased with block piece, described internally threaded sleeve is through upper and lower two-layer horizontal wire net, and one threadeds with lifting bolt；Described block piece level is located at the centre of upper and lower two-layer horizontal wire net.
Preferably, described road deck plate body is RPC plate body.
It is further preferred that described block piece can be the horizontal anchor plates that centre has preformed hole, it is also possible to be the horizontal circular ring of ambient radiation shape welding pin.
It is further preferred that described horizontal anchor plates can be the circular slab of metal material, set square or rectangular slab.
Further preferred, the thickness of described road deck plate body is 50～100mm, is only the 1/3～1/2 of same level size Common Concrete Pavement plate.
It is furthermore preferred that described RPC plate body is built by RPC and formed, adopt following raw material and proportion optimizing, road deck mechanical property be greatly improved, especially comprcssive strength, rupture strength, raw material and weight proportion be:
Cement 20%～50%；
Admixture 5%～30%；
Fine aggregate 30%～60%；
Micropowder material 4%～25%；
Super plasticizer 1%～8%；
Plasticity-maintaining agent 0%～0.5%；
Defoamer 0.2%～1%；
Water 7%～10%.
Wherein, cement is Portland cement, composite Portland cement or pulverized fuel ash cement, and strength grade is not less than 42.5 grades；Admixture is sio2Content is more than 93%, and specific surface area is more than 20000kg/m3Silicon ash, second class powered coal ash or the activity index slag powders more than 95%；Fine aggregate is quartz sand, fluvial sand or Machine-made Sand, and particle diameter is 0.16～2.50mm；Micropowder material is silica flour or the fine ground slag of 300 order～500 orders；Super plasticizer powder is polycarboxylic acid salt or sulfamic acid salt mixture, and water-reducing rate reaches more than 30%；Plasticity-maintaining agent is mixed by phosphate and sulfate and forms；Described defoamer is one or more mixture in organic silicon defoamer powder, high fatty alcohol defoamer powder or polyethers defoamer.
The invention still further relates to the manufacture method of the above-mentioned prefabricated road deck of RPC unreinforced, it is characterised in that comprise the steps:
Step one, road deck mould pretreatment: with aqueous release agent uniform application road deck mould；
Step 2, in road deck mould install horizontal wire net and lifting built-in fitting: according to relative position relation, upper and lower two horizontal wire nets and four lifting built-in fittings are welded and fixed, become panel keel shoe, two horizontal wire net horizontal parallel therein are arranged, four lifting built-in fittings are perpendicular to horizontal wire network plane, horizontal wire network plane is all passed at the two ends of internally threaded sleeve, middle anchor slab is parallel with horizontal wire network plane and is positioned in the middle of two-layer horizontal wire net, whole support body is put into road deck mould and fixes；
Step 3, connection form road deck keel shoe: horizontal wire net and lifting built-in fitting are connected formation road deck keel shoe, whole support body is put into road deck mould and fixes；
Step 4, prepare concrete: carry out concrete preparation, including raw-material weighing, mixing and stirring；
Step 5, the building and molding of RPC road deck: RPC once-cast step 3 obtained enters mould, make its uniform distribution in road deck mould, will be equipped with the mould of RPC afterwards and be put into high-frequency vibrating table vibration 2～3 minutes, the gas in RPC body is made to overflow from concrete surface completely, finally it is closed flat surface with trowel, the frequency of vibration of high-frequency vibrating table no less than 50 hertz, amplitude 0.3mm～0.6mm；
Step 6, road deck maintenance: the RPC road deck plastic sheeting of molding is encased, level lifts and is positioned over indoor and carries out natural curing, Indoor Natural curing temperature is not less than 20 DEG C, form removal after 1 day, lifting built-in fitting installs lifting bolt, so far, the completing of road deck.
Preferably, in described step 4, concrete is RPC, and its concrete preparation method is: after cement, admixture, micropowder material, super plasticizer, plasticity-maintaining agent and defoamer being weighed according to both certainty ratios, pour blender dry mixing into 0.5～3 minute, blender rotating speed is not less than 60 revs/min, is then placed in water, becomes slurry after stirring 3～5 minutes, it is eventually adding fine aggregate, being stirred for 0.5～2 minute, standby after stirring, the fluidity of gained RPC is 160～200mm.
Compared with prior art, the present invention's it is a technical advantage that:
1, RPC is adopted to make, its mechanical property and the prefabricated road deck of normal concrete have very big difference, concrete crushing strength >=110Mpa, concrete flexural strength >=15Mpa, the maximum wheel load 13KN of single-wheel, maximum load capacity 200KN, have superelevation resistance to compression, rupture strength, excellent durability, shock resistance, bending resistance are strong；Improving early strength, after Concrete in Natural maintenance 1 day, intensity is greater than 60MPa, can lift, and reduces maintenance workload；Overcoming normal concrete prefabricated road deck intensity not high, road surface is not wear-resisting, and the problems such as block, frangibility are fallen in corner；
2, the lifting built-in fitting adopting four up/down perforations in double-layer horizontal steel wire and corner forms panel keel shoe, replace traditional structure arrangement of reinforcement, further increase the bulk strength of panel, effect of prestressed is good, when making road deck not configure steel bar stress and steel fibre, the requirement of maximum load capacity can be met；Simultaneously, the thickness making road deck significantly reduces, it is generally 50～100mm, it is only the 1/3～1/2 of same level size Common Concrete Pavement plate, component build is slim and graceful, solves the prefabricated road deck component build of normal concrete heavy, installs, transports extremely inconvenient problem, bring convenience to prefabricated, transport and site operation, it is simple to install at any time and dismounting；
3, manufacture method is simple, can batch production batch production, standardization makes, and steady quality is reliable, and cost is low, before road deck construction need not pre-buried lifting bolt, lifting bolt need not be cut after form removal, simplify working procedure；
4, adopt rotating speed to be not less than 60 revs/min of forced mixers and prepare the concrete that fluidity is 160～200mm, adopt frequency no less than 50 hertz, amplitude 0.3mm～0.6mm high-frequency vibrating table molding road deck, and the natural curing when indoor temperature is not less than 20 DEG C, avoid too small the causing of fluidity in road deck manufacturing process at the scene and build difficulty, or fluidity is excessive cause molding after the component thickness size of hoisting process be difficult to ensure that accurately, thus causing, the quality of production is unstable, homogeneity is bad, the problem affecting its engineer applied and construction quality；
5, road deck two sides all can use, equal Liftable, and repeatable utilization, there is good economic benefit.
To sum up, this product technology superior performance, the engineering field such as can be widely applied to temporary building facility, antidetonation is speedily carried out rescue work.Being suitable for municipal administration, science of bridge building, especially the paving such as temporay building project, has broad application prospects in the large-scale engineering construction of China.
Accompanying drawing explanation
Fig. 1 is the top view of the prefabricated unreinforced RPC road deck that the present invention relates to；
Fig. 2 is the cross-sectional view of A-A section in Fig. 1；
Fig. 3 is the cross-sectional view of B-B section in Fig. 1；
Fig. 4 is the integrally-built front view of the lifting built-in fitting 3 that the present invention relates to；
Fig. 5 is the integrally-built top view of the lifting built-in fitting 3 that the present invention relates to；
Fig. 6 is the annexation schematic diagram of lifting the built-in fitting 3 and lifting bolt 4 that the present invention relates to.
Accompanying drawing labelling: 1-road deck plate body, 2-horizontal wire net, 3-lift built-in fitting, 31-internally threaded sleeve, 32-block piece, 4-lifting bolt.
Detailed description of the invention
Below in conjunction with accompanying drawing, present invention is further explained explanation.
Such as Fig. 1～Fig. 3, a kind of assembled prefabricated road deck of RPC unreinforced, including road deck plate body 1, it is characterised in that: on the inside of described road deck plate body 1, close plate body, bottom surface is covered with one layer of horizontal wire net 2 respectively；The lifting built-in fitting 3 of a pre-buried bottom surface vertically respectively, four corners of described road deck plate body 1, described lifting built-in fitting 3 is the internally threaded sleeve 31 being cased with block piece 32, block piece 32 is positioned at the centre of upper and lower two-layer horizontal wire net 2, for fixing internally threaded sleeve 31, can be horizontally disposed with, centre has the anchor slab of sleeve pipe preformed hole, it is also possible to be made up of middle annulus and the radial pin being welded in around annulus.Such as Fig. 4, Fig. 5 and Fig. 6, the present embodiment lifts the block piece 32 of built-in fitting 3 be horizontally disposed with, centre has the square anchor slab of sleeve pipe preformed hole, anchor slab can be metal material for circular slab, set square or rectangular slab, the board plane level of anchor slab, be located between two-layer horizontal wire net.Internally threaded sleeve 31 is through upper and lower two-layer horizontal wire net through whole road deck plate body 2, and one threadeds with lifting bolt 4.Such as Fig. 6, threaded with the bolt bottom lifting bolt 4 in one or two end of described internally threaded sleeve 31, and lifting bolt is exposed at the outside of panel and bottom contacts with road deck plate face.Road deck can lift on two sides, and two sides all can use.In the present embodiment, inner screw sheath bore 10mm in lifting built-in fitting 3, external diameter 20mm, height 50～100mm, square anchor slab length of side 50mm, thick 1mm, the distance of the described horizontal wire net 2 upper bottom surface from RPC plate is 1.5～3mm, the thickness of described road deck is 50～100mm, is the 1/3～1/2 of same level size Common Concrete Pavement plate.
The road deck plate body 1 that the present embodiment relates to is RPC plate, RPC can be greatly improved road deck mechanical property, especially comprcssive strength, rupture strength, its RPC adopts following raw material and proportion optimizing, the raw material of RPC and the weight proportion to be:
Cement 20%～50%；
Admixture 5%～30%；
Fine aggregate 30%～60%；
Micropowder material 4%～25%；
Super plasticizer 1%～8%；
Plasticity-maintaining agent 0%～0.5%；
Defoamer 0.2%～1%；
Water 7%～10%.
Wherein, cement is Portland cement, composite Portland cement or pulverized fuel ash cement, and strength grade is not less than 42.5 grades；Admixture is sio2Content is more than 93%, and specific surface area is more than 20000kg/m3Silicon ash, second class powered coal ash or the activity index slag powders more than 95%；Fine aggregate is quartz sand, fluvial sand or Machine-made Sand, and particle diameter is 0.16～2.50mm；Micropowder material is silica flour or the fine ground slag of 300 order～500 orders；Super plasticizer powder is the mixture such as polycarboxylic acid salt or sulfamic acid salt composition, and water-reducing rate reaches more than 30%；Plasticity-maintaining agent is made up of the mixture such as phosphate or sulfate；Described defoamer is one or more mixture in organic silicon defoamer powder, high fatty alcohol defoamer powder or polyethers defoamer.
The invention still further relates to the manufacture method of a kind of above-mentioned prefabricated road deck of RPC unreinforced, it is characterised in that comprise the steps:
Step one, road deck mould pretreatment: with aqueous release agent uniform application road deck mould；
Step 2, in road deck mould install horizontal wire net 2 and lifting built-in fitting 3: according to relative position relation, upper and lower two horizontal wire nets 2 and four lifting built-in fittings 3 are welded and fixed, become panel keel shoe, two horizontal wire net 2 horizontal parallel therein are arranged, four lifting built-in fittings 3 are perpendicular to horizontal wire network plane, horizontal wire network plane is all passed at the two ends of internally threaded sleeve 31, middle anchor slab 32 is parallel with horizontal wire network plane and is positioned in the middle of two-layer horizontal wire net, whole support body is put into road deck mould and fixes；
Step 3, connection form road deck keel shoe: horizontal wire net and lifting built-in fitting are connected formation road deck keel shoe, whole support body is put into road deck mould and fixes；
Step 4, prepare concrete: carry out concrete preparation, including raw-material weighing, mixing and stirring；This embodiment is selected RPC: after being weighed according to both certainty ratios by the raw materials such as cement, admixture, micropowder material, fine aggregate, super plasticizer, pour blender dry mixing into 0.5～3 minute, rotating speed is not less than 60 revs/min, it is then placed in water, become slurry after stirring 3～5 minutes, be subsequently adding fine aggregate, be stirred for 0.5～2 minute, concrete-agitating is uniformly standby, and the concrete fluidity of preparation is 160～200mm；
Step 5, the building and molding of RPC road deck: RPC once-cast step 3 obtained enters mould, make its uniform distribution in road deck mould, will be equipped with the mould of RPC afterwards and be put into high-frequency vibrating table vibration 2～3 minutes, make the gas in RPC body overflow from concrete surface completely, be finally closed flat surface with trowel；The frequency of vibration of high-frequency vibrating table no less than 50 hertz, amplitude 0.3mm～0.6mm.
Step 6, road deck maintenance: being encased by the RPC road deck plastic sheeting of molding, level lifts and is positioned over indoor and carries out natural curing, and Indoor Natural maintenance is not less than 20 DEG C.Form removal after 1 day, installs lifting bolt 4 on lifting built-in fitting, so far, and completing of road deck.
Claims (9)
1. the prefabricated road deck of assembled RPC unreinforced, including road deck plate body (1), it is characterised in that: the inside of described road deck plate body (1), close upper bottom surface are covered with one layer of horizontal wire net (2) respectively；The lifting built-in fitting (3) of four corners of described road deck plate body (1) pre-buried vertically communicated road deck plate body (1) respectively, described lifting built-in fitting (3) is the internally threaded sleeve (31) being cased with block piece (32), described internally threaded sleeve (31) is through upper and lower two-layer horizontal wire net, and one threadeds with lifting bolt (4)；Described block piece (32) level is located at the centre of upper and lower two-layer horizontal wire net (2).
2. the assembled prefabricated road deck of RPC unreinforced according to claim 1, it is characterised in that: described road deck plate body (1) is RPC plate body.
3. the assembled prefabricated road deck of RPC unreinforced according to claim 2, it is characterised in that: described block piece (32) is the horizontal anchor plates having preformed hole, or around has the horizontal circular ring of radial pin.
4. the assembled prefabricated road deck of RPC unreinforced according to claim 3, it is characterised in that: described horizontal anchor plates is the circular slab of metal material, set square or rectangular slab.
5. the assembled prefabricated road deck of RPC unreinforced according to claim 2, it is characterised in that: the thickness of described road deck plate body (1) is 50～100mm.
6. the assembled prefabricated road deck of RPC unreinforced according to claim 2, it is characterised in that: described RPC plate body is built by RPC and is formed, and the component of described RPC and weight proportion be:
Cement 20%～50%；
Admixture 5%～30%；
Fine aggregate 30%～60%；
Micropowder material 4%～25%；
Super plasticizer 1%～8%；
Plasticity-maintaining agent 0%～0.5%；
Defoamer 0.2%～1%；
Water 7%～10%.
7. the assembled prefabricated road deck of RPC unreinforced according to claim 6, it is characterized in that: in the raw material of described RPC, cement is Portland cement, composite Portland cement or pulverized fuel ash cement, and strength grade is not less than 42.5 grades；Admixture is sio2Content is more than 93%, and specific surface area is more than 20000kg/m3Silicon ash, second class powered coal ash or the activity index slag powders more than 95%；Fine aggregate is quartz sand, fluvial sand or Machine-made Sand, and particle diameter is 0.16～2.50mm；Micropowder material is silica flour or the fine ground slag of 300 order～500 orders；Super plasticizer powder is polycarboxylic acid salt or sulfamic acid salt mixture, and water-reducing rate reaches more than 30%；Plasticity-maintaining agent is made up of phosphate and sulfate；Described defoamer is one or more mixture in organic silicon defoamer powder, high fatty alcohol defoamer powder or polyethers defoamer.
8. the manufacture method of the prefabricated road deck of RPC unreinforced according to claim 1～7 any one, it is characterised in that comprise the steps:
Step one, mould pretreatment: with aqueous release agent uniform application road deck mould；
Step 2, laying installation horizontal wire net (2) and lifting built-in fitting (3) in road deck mould: according to relative position relation, upper and lower two horizontal wire nets (2) are welded and fixed with four liftings built-in fitting (3),
Step 3, connection form road deck keel shoe: horizontal wire net (2) and lifting built-in fitting (3) are connected and form road deck keel shoe, whole support body are put into road deck mould and fixes；
Step 4, prepare concrete: carry out concrete preparation, including raw-material weighing, mixing and stirring；
Step 5, the building and molding of RPC road deck: RPC once-cast step 3 obtained enters mould, make its uniform distribution in road deck mould, will be equipped with the mould of RPC afterwards and be put into high-frequency vibrating table vibration 2～3 minutes, the gas in RPC body is made to overflow from concrete surface completely, finally it is closed flat surface with trowel, the frequency of vibration of high-frequency vibrating table no less than 50 hertz, amplitude 0.3mm～0.6mm；
Step 6, road deck maintenance: the RPC road deck plastic sheeting of molding is encased, level lifts and is positioned over indoor and carries out natural curing, Indoor Natural curing temperature is not less than 20 DEG C, form removal after 1 day, lifting built-in fitting installs lifting bolt (4), so far, the completing of road deck.
9. the manufacture method of the prefabricated road deck of RPC unreinforced according to claim 8, it is characterized in that, in described step 4, concrete is RPC, its concrete preparation method is: by cement, admixture, micropowder material, super plasticizer, after plasticity-maintaining agent and defoamer weigh according to both certainty ratios, pour blender dry mixing into 0.5～3 minute, blender rotating speed is not less than 60 revs/min, it is then placed in water, slurry is become after stirring 3～5 minutes, it is eventually adding fine aggregate, it is stirred for 0.5～2 minute, after stirring standby, the fluidity of gained RPC is 160～200mm.
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| CN105421188B (en) * | 2015-11-25 | 2017-11-17 | 中冶天工集团有限公司 | The construction method of assembled temporary road |
| CN105563614A (en) * | 2016-03-15 | 2016-05-11 | 苏州市兴邦化学建材有限公司 | Production process of surface-bright profile steel fiber concrete inspection well cover |
| CN105948660B (en) * | 2016-06-14 | 2019-04-02 | 同济大学 | A kind of high-strength superhigh tenacity concrete and preparation method thereof |
| CN106625991A (en) * | 2016-10-13 | 2017-05-10 | 常州中铁城建构件有限公司 | Novel cement floor |
| CN107022938A (en) * | 2017-04-26 | 2017-08-08 | 中国十九冶集团有限公司 | Precast concrete road system and construction method |
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| CN107130519B (en) * | 2017-05-23 | 2019-03-05 | 中国一冶集团有限公司 | The production and handling method of concrete prefabricated plate |
| CN107386332A (en) * | 2017-08-23 | 2017-11-24 | 北京四方如钢混凝土制品有限公司 | Cement cover board |
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| CN113047111B (en) * | 2021-05-08 | 2023-05-12 | 中铁北京工程局集团有限公司 | Airfield runway angle steel assembly type pavement slab structure |
| CN114014600A (en) * | 2021-12-02 | 2022-02-08 | 重庆大巴山新材料有限公司 | Assembled prefabricated cover plate and preparation method |
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| GB485808A (en) * | 1937-04-24 | 1938-05-25 | Arnot Stirling Valentine | Improvements in road construction |
| GB572393A (en) * | 1943-08-23 | 1945-10-05 | Leonard Drury Smith | Improvements in or relating to concrete roads or paving |
| CN2247691Y (en) * | 1995-07-01 | 1997-02-19 | 宫德文 | Precast formed cement ground cracking net |
| CN2464765Y (en) * | 2001-02-27 | 2001-12-12 | 苗水星 | Large area steel net concrete brick |
| CN202073005U (en) * | 2011-04-15 | 2011-12-14 | 中天建设集团有限公司 | Shaped road module |
| CN102584129B (en) * | 2012-03-02 | 2013-05-01 | 中国建筑股份有限公司 | Dry powder of active powder concrete and use method of dry powder |
| US8496396B1 (en) * | 2012-07-12 | 2013-07-30 | JJA Engineering, LLC | Wire mesh for pervious concrete |
| CN204139015U (en) * | 2014-09-22 | 2015-02-04 | 中国建筑股份有限公司 | The prefabricated road slab of a kind of assembling RPC unreinforced |
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Inventor after: Liao Juan Inventor after: Zhang Tao Inventor after: Wang Dongyan Inventor after: Li Jingfang Inventor after: Hao Wenzhan Inventor after: Zhang Nan Inventor after: Wang Baohua Inventor after: Zhang Donghua Inventor before: Liao Juan Inventor before: Zhang Tao Inventor before: Wang Dongyan Inventor before: Li Jingfang Inventor before: Hao Wenzhan Inventor before: Zhang Nan Inventor before: Wang Baohua Inventor before: Zhang Donghua |