CN204139015U - The prefabricated road slab of a kind of assembling RPC unreinforced - Google Patents
The prefabricated road slab of a kind of assembling RPC unreinforced Download PDFInfo
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- CN204139015U CN204139015U CN201420543004.XU CN201420543004U CN204139015U CN 204139015 U CN204139015 U CN 204139015U CN 201420543004 U CN201420543004 U CN 201420543004U CN 204139015 U CN204139015 U CN 204139015U
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- road slab
- rpc
- unreinforced
- slab
- assembling
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Abstract
The prefabricated road slab of a kind of assembling RPC unreinforced, plate body is the plate of material be made by RPC, is equipped with one deck horizontal wire net respectively near upper bottom surface in RPC plate of material, and vertical through, a lifting built-in fitting that two ends all can connect suspender is set respectively four corners.Control the degree of mobilization of RPC during making, make road slab indeformable in post production process, and in Indoor Natural maintenance, road slab total quality is guaranteed.Compared with Common Concrete Pavement plate, the utility model road slab structure unreinforced, thickness is little, and build is light lightweight, is convenient to transport and installs, and reusable; Intensity is high, wear-resisting, supporting capacity is high, and shock resistance, anti-fatigue performance are good, and good weatherability, quick construction is efficient, can be widely used in the road construction in temporary building living area.
Description
Technical field
The utility model relates to pavement construction technical field, particularly relates to a kind of prefabricated road slab of RPC of high strength.
Background technology
RPC (Reactive Powder Concrete), be called for short RPC, it is a kind of novel concrete based composites, this material at first the nineties by French Bouygues company utility model, produce through specific process conditions, 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 contains the Sherbrooke of Quebec, Canada, First prestressing force RPC structure pedestrian overcrossing in the world, the engineerings such as France Cattenom nuclear power station, the arch form pedestrian overcrossing in South Korea Seoul, China is then mainly used in high ferro Line for Passenger Transportation sidewalk 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 assembling road slab, there is no corresponding preparation method yet.
Some problem below the prefabricated road slab of existing ordinary reinforced concrete exists when applying: (1) compressive strength is not high, and in installing/dismounting and use procedure, the phenomenon of corner breakage easily appears in component; (2) flexural strength is not high, easily occurs the phenomenon that road slab ruptures in use procedure; (3) adopt thermal curing mode to be convenient to the demoulding early and lifting, the energy consumption of needs is higher; (4) the prefabricated road slab component thickness of ordinary reinforced concrete of same planar dimension is large, and build is heavy, is not easy to repeatedly repeat to install and use, transport; (5) concrete durability is poor; (6) road slab needs built-in hanger when making, and needs to cut hanging piece when form removal is dispatched from the factory, and operation is loaded down with trivial details.
Utility model content
The utility model object is to provide a kind of assembling RPC unreinforced prefabricated road slab, solves that ordinary reinforced concrete prefabricated road slab intensity in prior art is not high, installing/dismounting and breakage easily appears in use procedure, fracture, fast form removal need adopt the thermal curing technology of high energy consumption and be not easy to the problem of field fabrication; Also solve prevailing roadway plate containing arrangement of reinforcement, component thickness is large, build is heavy, the problem of installation and transportation when being not easy to repeatedly use; In addition, also solve that existing road slab needs built-in hanger when making, form removal needs when dispatching from the factory to cut the problem that hanging piece, operation are loaded down with trivial details, waste time and energy.
For solving the problems of the technologies described above, the utility model takes following technical scheme:
The prefabricated road slab of a kind of assembling RPC unreinforced, comprises road slab plate body, it is characterized in that: inside, the close upper bottom surface of described road slab plate body are covered with one deck horizontal wire net respectively; The lifting built-in fitting of four pre-buried vertical through road slab plate bodys of corners difference of described road slab plate body, described lifting built-in fitting is the internal thread sleeve pipe that cover has block piece, described internal thread sleeve pipe is through upper and lower two-layer horizontal wire net, and one is threaded with lifting bolt; Described block piece level is located at the centre of upper and lower two-layer horizontal wire net.
Preferably, described road slab plate body is RPC plate body.
Preferred further, described block piece can be the horizontal anchor plates that centre has preformed hole, also can be the horizontal circular ring of ambient radiation shape welding pin.
Further preferred, described horizontal anchor plates can be the circular slab of metal material, set square or rectangular slab.
Further preferred, the thickness of described road slab plate body is 50 ~ 100mm, is only 1/3 ~ 1/2 of same level size Common Concrete Pavement plate.
Compared with prior art, technical advantage of the present utility model is:
1, RPC is adopted to make, its mechanical property and the prefabricated road slab of ordinary 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; Improve early strength, Concrete in Natural maintenance after 1 day intensity be just greater than 60MPa, can lift, reduce maintenance workload; Overcome ordinary concrete prefabricated road slab intensity not high, road surface is not wear-resisting, the problems such as block is fallen in corner, frangibility;
2, the lifting built-in fitting forming surface board keel frame of four up/down perforations in double-layer horizontal gauze wire cloth and bight is adopted, replace traditional structure arrangement of reinforcement, further increase the bulk strength of panel, effect of prestressed is good, when making road slab not configure steel bar stress and steel fibre, the requirement of maximum load capacity can be met; Simultaneously, the thickness of road slab is significantly reduced, be generally 50 ~ 100mm, only 1/3 ~ 1/2 of same level size Common Concrete Pavement plate, component build is slim and graceful, solves ordinary concrete prefabricated road slab component build heavy, installs, transports extremely inconvenient problem, to prefabricated, transport and site operation bring convenience, be convenient to install at any time and dismantle;
3, manufacture craft is simple, can batch production batch production, and standardization makes, and steady quality is reliable, and cost is low, need not pre-buried lifting bolt before road slab construction, need not cut lifting bolt, simplify working procedure after form removal;
4, road slab two sides all can use, equal Liftable, and can reuse, and has good economic benefit.
To sum up, this product technology superior performance, the engineering field such as can be widely used in temporary building facility, antidetonation is speedily carried out rescue work.Be suitable for municipal administration, bridge engineering, the especially paving such as temporary 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 slab that the utility model 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 elevation of the lifting built-in fitting 3 that the utility model relates to;
Fig. 5 is the integrally-built top view of the lifting built-in fitting 3 that the utility model relates to;
Fig. 6 is the lifting built-in fitting 3 that relates to of the utility model and the annexation schematic diagram of lifting bolt 4.
Reference numeral: 1-road slab plate body, 2-horizontal wire net, 3-lift built-in fitting, 31-internal thread sleeve pipe, 32-block piece, 4-lifting bolt.
Detailed description of the invention
Below in conjunction with accompanying drawing, explanation is further explained to the utility model content.
As Fig. 1 ~ Fig. 3, the prefabricated road slab of a kind of assembling RPC unreinforced, comprises road slab plate body 1, it is characterized in that: on the inside of described road slab plate body 1, close plate body, bottom surface is covered with one deck horizontal wire net 2 respectively; The lifting built-in fitting 3 of a pre-buried bottom surface vertically respectively, four corners of described road slab plate body 1, described lifting built-in fitting 3 is internal thread sleeve pipes 31 that cover has block piece 32, block piece 32 is positioned at the centre of upper and lower two-layer horizontal wire net 2, for fixing internal thread sleeve pipe 31, can be horizontally disposed with, anchor slab that centre has sleeve pipe preformed hole, also can be made up of the annulus of centre and the radial pin be welded in around annulus.As Fig. 4, Fig. 5 and Fig. 6, the block piece 32 lifting built-in fitting 3 in the present embodiment be horizontally disposed with, square anchor slab that centre has 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, is located between two-layer horizontal wire net.Internal thread sleeve pipe 31 passes upper and lower two-layer horizontal wire net and through whole road slab plate body 2, and one is threaded with lifting bolt 4.As Fig. 6, one or two end of described internal thread sleeve pipe 31 is threaded with the bolt bottom lifting bolt 4, and lifting bolt is exposed at the outside of panel and bottom contacts with road slab plate face.Road slab 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 1 mm, described horizontal wire net 2 is 1.5 ~ 3mm apart from the distance of the upper bottom surface of RPC plate, the thickness of described road slab is 50 ~ 100mm, is 1/3 ~ 1/2 of same level size Common Concrete Pavement plate.
The road slab plate body 1 that the present embodiment relates to is RPC plate, RPC can significantly improve road slab mechanical property, especially compressive strength, rupture strength, its RPC adopts following raw material and proportion optimizing, and the raw material of RPC and weight proportion are:
Cement 20% ~ 50%;
Admixture 5% ~ 30%;
Fines 30% ~ 60%;
Micro mist 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 sio
2content is greater than 93%, and specific area is greater than 20000kg/m
3silicon ash, second class powered coal ash or the activity index slag powders that is greater than 95%; Fines is quartz sand, river sand or Machine-made Sand, and particle diameter is 0.16 ~ 2.50mm; Fine powder is 300 order ~ 500 object quartz powder or fine ground slag; 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, sulfate; Described defoamer is one or more mixtures in silicone defoaming agent powder, higher aliphatic defoamer powder or polyethers defoamer.
The preparation method of the prefabricated road slab of the utility model RPC unreinforced comprises the steps:
The pretreatment of step one, road slab mould: use release agent uniform application road slab mould;
Step 2, install in road slab mould 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 are lifted built-in fitting 3 be welded and fixed, become panel keel shoe, two horizontal wire net 2 horizontal parallel are wherein 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 internal thread sleeve pipe 31, middle anchor slab 32 is parallel with horizontal wire network plane and be positioned in the middle of two-layer horizontal wire net, whole support body is put into road slab mould and fixes;
Step 3, be connected to form road slab keel shoe: horizontal wire net and lifting built-in fitting are connected to form road slab keel shoe, whole support body put into road slab mould and fixing;
Step 4, prepare concrete: carry out concrete preparation, comprise and raw-materially to weigh, mix and stirring; RPC is selected: after being weighed according to both certainty ratios by the raw materials such as cement, admixture, micro mist material, fines, super plasticizer in this embodiment, pour mixer dry mixing into 0.5 ~ 3 minute, rotating speed is not less than 60 revs/min, then water is put into, stir and become slurry after 3 ~ 5 minutes, then add fines, then stir 0.5 ~ 2 minute, concrete-agitating is evenly for subsequent use, and the concrete degree of mobilization of preparation is 160 ~ 200mm;
Step 5, RPC road slab build and shaping: RPC once-cast step 3 obtained enters mould, make its uniform distribution in road slab mould, afterwards the mould that RPC is housed is put into high-frequency vibrating table vibration 2 ~ 3 minutes, gas in RPC body is overflowed from concrete surface completely, is finally closed flat surface with trowel; The vibration frequency of high-frequency vibrating table is no less than 50 hertz, amplitude 0.3mm ~ 0.6mm.
The maintenance of step 6, road slab: encased by shaping RPC road slab plastic sheeting, level lifts and is positioned over indoor carries out natural curing, and Indoor Natural maintenance is not less than 20 DEG C.Form removal after 1 day, lifting built-in fitting installs lifting bolt 4, so far, and completing of road slab.
Claims (5)
1. the prefabricated road slab of assembling RPC unreinforced, comprises road slab plate body (1), it is characterized in that: inside, the close upper bottom surface of described road slab plate body (1) are covered with one deck horizontal wire net (2) respectively; The lifting built-in fitting (3) of four pre-buried vertical through road slab plate bodys (1) of corners difference of described road slab plate body (1), described lifting built-in fitting (3) is the internal thread sleeve pipe (31) that cover has block piece (32), described internal thread sleeve pipe (31) is through upper and lower two-layer horizontal wire net, and one is threaded 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 prefabricated road slab of assembling RPC unreinforced according to claim 1, is characterized in that: described road slab plate body (1) is RPC plate body.
3. the prefabricated road slab of assembling RPC unreinforced according to claim 2, is characterized in that: described block piece (32) is the horizontal anchor plates having preformed hole, or has the horizontal circular ring of radial pin around.
4. the prefabricated road slab of assembling RPC unreinforced according to claim 3, is characterized in that: described horizontal anchor plates is the circular slab of metal material, set square or rectangular slab.
5. the prefabricated road slab of assembling RPC unreinforced according to claim 2, is characterized in that: the thickness of described road slab plate body (1) is 50 ~ 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543004.XU CN204139015U (en) | 2014-09-22 | 2014-09-22 | The prefabricated road slab of a kind of assembling RPC unreinforced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543004.XU CN204139015U (en) | 2014-09-22 | 2014-09-22 | The prefabricated road slab of a kind of assembling RPC unreinforced |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204139015U true CN204139015U (en) | 2015-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420543004.XU Withdrawn - After Issue CN204139015U (en) | 2014-09-22 | 2014-09-22 | The prefabricated road slab of a kind of assembling RPC unreinforced |
Country Status (1)
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| CN (1) | CN204139015U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294728A (en) * | 2014-09-22 | 2015-01-21 | 中国建筑股份有限公司 | Fabricated type reactive powder concrete prefabricated pavement slab without reinforcing rib and manufacturing method thereof |
| CN105401510A (en) * | 2015-11-19 | 2016-03-16 | 上海同科交通科技有限公司 | Assembly type hoisting and leveling device for cement pavement |
| CN105421188A (en) * | 2015-11-25 | 2016-03-23 | 中冶天工集团有限公司 | Construction method of assembly type temporary road |
| CN107355044A (en) * | 2017-08-23 | 2017-11-17 | 北京四方如钢混凝土制品有限公司 | Novel concrete support beam |
-
2014
- 2014-09-22 CN CN201420543004.XU patent/CN204139015U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294728A (en) * | 2014-09-22 | 2015-01-21 | 中国建筑股份有限公司 | Fabricated type reactive powder concrete prefabricated pavement slab without reinforcing rib and manufacturing method thereof |
| CN105401510A (en) * | 2015-11-19 | 2016-03-16 | 上海同科交通科技有限公司 | Assembly type hoisting and leveling device for cement pavement |
| CN105401510B (en) * | 2015-11-19 | 2018-01-09 | 上海同科交通科技有限公司 | Lift by crane levelling device in a kind of assembled cement paving |
| CN105421188A (en) * | 2015-11-25 | 2016-03-23 | 中冶天工集团有限公司 | Construction method of assembly type temporary road |
| CN107355044A (en) * | 2017-08-23 | 2017-11-17 | 北京四方如钢混凝土制品有限公司 | Novel concrete support beam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150204 Effective date of abandoning: 20160706 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |