CN107151958A - A kind of permanent rural highway cement pavement of easy care - Google Patents
A kind of permanent rural highway cement pavement of easy care Download PDFInfo
- Publication number
- CN107151958A CN107151958A CN201710348759.2A CN201710348759A CN107151958A CN 107151958 A CN107151958 A CN 107151958A CN 201710348759 A CN201710348759 A CN 201710348759A CN 107151958 A CN107151958 A CN 107151958A
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- Prior art keywords
- cement
- prefabricated
- concrete
- pavement
- cement board
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/50—Removable forms or shutterings for road-building purposes; Devices or arrangements for forming individual paving elements, e.g. kerbs, in situ
- E01C19/508—Devices or arrangements for forming individual paving elements in situ, e.g. by sectioning a freshly-laid slab
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a kind of permanent rural highway cement pavement of easy care, from top to bottom including three layers of Cement Concrete Pavement Slab, graded broken stone base and roadbed.The panel of the present invention and the common stress of basic unit, so that whole pavement structure stress is more reasonable, can be with prolonging service life of pavement, reduce road surface breakage disease, using prefabrication Cement Concrete Pavement Slab, site machinery assembling construction is more maintained easily, quick-replaceable can be carried out for indivedual damaged plates, the interference to normal pass is reduced.
Description
Technical field
The present invention relates to rural highway field, especially a kind of permanent rural highway cement pavement of easy care.
Background technology
Traditional rural rural highway, block street, factory (are stood) area's hardening, parking lot, the water of interim dispatch driving sidewalk
The cast-in-place method construction of cement concrete road surface, generally existing concrete mixing, pave, vibrate, being molded, the link variability such as joint-cutting it is big,
The unstable common fault of quality.Moreover, conventional cement pavement structure is using laying cement road surface plate on semi-rigid type base, panel and
Residual stiffness of base course is all larger, because cement concrete slab transverse joint spacing is larger, bad plus seam construction quality, in vehicular load
Under the effect of extraneous high/low temperature, easily there is concrete slab and locally come to nothing, with basic unit can not together with work stress, there is seam
With the destruction at corner.Cement pavement design service life, which does not often reach, to be accomplished by carrying out plate replacing and maintenance, due to existing
The formation of pouring concrete intensity needs certain time, and maintenance period vehicle can not roll new pavement plate, and normal driving is brought
A certain degree of interference.
The content of the invention
It is an object of the invention to provide a kind of permanent rural highway cement pavement of easy care, existing cement pavement paving is solved
If cumbersome, the problem of difficult in maintenance.
Realized by following scheme on two mu of ground of the present invention：
A kind of permanent rural highway cement pavement of easy care, the cement pavement includes from top to bottom：Cement-concrete road
Panel, graded broken stone base, roadbed；
Cement Concrete Pavement Slab is spliced for prefabricated cement board；
Graded broken stone base uses graded broken stone；
The roadbed filling using compacting of roadbed, compactness is not less than 93%.
Graded broken stone by each sieve diameter by the level of quality percentage with requirement for：37.5mm-100%, 31.5mm-
90%th, 19.0mm-73%, 9.5mm-49%, 4.75mm-29%, 2.36mm-17%, 0.6mm-8%, 0.075mm-0%.
The raw material of prefabricated cement board is water, flyash, cement, fine aggregate, coarse aggregate；
The quality parts ratio of each raw material is followed successively by：1：0.4-0.6：2.3-2.8：2.5-3.0：6.0-7.0；
The permission mass deviation that cement, flyash, water are weighed is ± 1%, and the permission quality that coarse aggregate, fine aggregate are weighed is inclined
Difference is ± 2%.
Flyash is gathered dust I, II grade of dry row or fine-ground fly-ash using electricity；
Water is met：Sulphates content is less than 0.0027mg/mm3, salt content is no more than 0.005mg/mm3, pH value be not less than 4,
Greasy dirt, mud are not contained；
Fine aggregate is natural sand or Machine-made Sand or mixed sand, and siliceous content is not less than 25%；
Coarse aggregate is rubble or crushed gravel or cobble；Cobble nominal maximum aggregate size is not more than 19.0mm, crushed gravel most grand duke
Particle diameter is claimed to be not more than 26.5mm, rubble nominal maximum aggregate size is not more than 31.5mm；
Cement is 425# portland cements.
The flexural tensile strength of prefabricated cement board is not less than 4.5MPa, and length is 250cm, and width is 150-200cm, and thickness is
18-25cm。
The prefabricated flow of prefabricated cement board is：Mixed material formation concrete, according to template casting concrete, by health
Reach and be stripped after intensity, same movement, stacking form batch Prefabrication.
Mixed material formation concrete uses forced concrete mixing machine, until the concrete color of mixing is consistent, does not have
Untill having isolation and excreting water phenomenon, stop stirring；
Template uses steel form, and plate face is smooth, seam tight, steel used according to《Carbon structural steels》(GB700) in
Standard choose；Before concreting, smearing release agent in template；
During concreting, pressed using vibrator jolt ramming, and order from the bottom to top is successively poured, i.e., in lower-layer concrete
Initial set pours before remold and completes to go up layer concrete；
Concrete is completed after pouring, and covered and sprinkled water maintenance, and does not have watering in 7 days once；
When the intensity of concrete reaches 2.5MPa, template is removed.
The upper surface of prefabricated cement board is provided with reserved suspension hook, and by reserving suspension hook, prefabricated water is sling or put down to vehicle equipment
Mud plate, completes the movement or splicing of prefabricated cement board.
The transverse joint of prefabricated cement board uses non-occlusive trapezium structure：
The stitching portion of two pieces of prefabricated cement boards at transverse joint is trapezoidal stepped, and the height phase of respective two-stage vertical plane
Deng the distance between two-stage vertical plane 9cm.
The longitudinal joint of prefabricated cement board is using occlusion trapezium structure：
The stitching portion of two pieces of prefabricated cement boards at longitudinal joint is trapezoidal stepped, and the height phase of respective two-stage vertical plane
Deng the distance between two-stage vertical plane 9cm；Provided with perpendicular at the inclined-plane of the trapezoidal step structure of one piece of upper prefabricated cement board
Straight downward raised tooth engaged；It is provided with straight down at the inclined-plane of the trapezoidal step structure of one piece of prefabricated cement board under
Occlusal crib.
The spelling of prefabricated cement board spreads process：
The vicinity that prefabricated cement board is transported to cement pavement to be laid has been paved position using vehicle equipment；Use delivery
The connecting shackle of the suspension bracket lower end of equipment hooks the reserved suspension hook of cement pavement, using the mounting structure of vehicle equipment by prefabricated water
Mud plate is sling, and is hung to the surface of cement pavement position to be laid；Vehicle equipment is adjusted by device for adjusting posture
Posture, by the camera of device for adjusting posture judge prefabricated cement board whether the position just to cement pavement to be laid；When pre-
Prefabricated cement board is put down when cement plate processed is just to the position of cement pavement to be laid, the spelling paving process of prefabricated cement board is completed.
The beneficial effects of the invention are as follows：
1. Cement Concrete Pavement Slab uses prefabrication, concrete road-mixed pavement plate workmanship can be effectively controlled, is kept away
Exempt from cast-in-site cement concrete pavement mix, pave, vibrate, the variability of the link such as health, improve panel service life；
2. traditional cast-in-place concrete road surface Plate division is reduced to 1.5m × 2.5m or 2m × 2.5m by 4.5m × 5m, and
Using graded broken stone base, compared with semi-rigid type base cement pavement, the panel probability that locally comes to nothing is substantially reduced, realize panel with
The common stress of basic unit so that whole pavement structure stress is more reasonable, meets preferably with design hypothesis.Pavement usage can be extended
In the life-span, reduce road surface breakage disease；
3. using prefabrication Cement Concrete Pavement Slab, site machinery assembling construction is more maintained easily, for indivedual
Damaged plate can carry out quick-replaceable, reduce the interference to normal pass.
Brief description of the drawings
Accompanying drawing is only used for showing the purpose of specific embodiment, and is not considered as limitation of the present invention, in whole accompanying drawing
In, identical reference symbol represents identical part.
Fig. 1 is a kind of diagrammatic cross-section of the permanent rural highway cement pavement of easy care；
Fig. 2 is a kind of spelling paving schematic diagram of the prefabricated cement board of the permanent rural highway cement pavement of easy care；
Fig. 3 is a kind of schematic diagram of the transverse joint of the prefabricated cement board of the permanent rural highway cement pavement of easy care；
Fig. 4 is a kind of schematic diagram of the longitudinal joint of the prefabricated cement board of the permanent rural highway cement pavement of easy care；
Fig. 5 is that a kind of permanent rural highway cement pavement of easy care spells the standby schematic diagram of the spelling laying used during paving.
In figure：1- prefabricated cement boards, 2- sand bedding courses, 3- graded broken stones, 4- mounting structures, 5- device for adjusting posture, 6- take the photograph
As head, 7- suspension brackets, 8- connecting shackles, 9- have paved.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
As Figure 1-Figure 2, a kind of permanent rural highway cement pavement of easy care, the cement pavement is wrapped from top to bottom
Include：Cement Concrete Pavement Slab, graded broken stone base, roadbed；
Cement Concrete Pavement Slab is that prefabricated cement board 1 is spliced；
Graded broken stone base uses graded broken stone 3；
The roadbed filling using compacting of roadbed, compactness is not less than 93%.
Graded broken stone 3 by each sieve diameter by the level of quality percentage with requirement for：37.5mm-100%, 31.5mm-
90%th, 19.0mm-73%, 9.5mm-49%, 4.75mm-29%, 2.36mm-17%, 0.6mm-8%, 0.075mm-0%.
The raw material of prefabricated cement board 1 is water, flyash, cement, fine aggregate, coarse aggregate；
The quality parts ratio of each raw material is followed successively by：1：0.4-0.6：2.3-2.8：2.5-3.0：6.0-7.0；
The permission mass deviation that cement, flyash, water are weighed is ± 1%, and the permission quality that coarse aggregate, fine aggregate are weighed is inclined
Difference is ± 2%.
Flyash is gathered dust I, II grade of dry row or fine-ground fly-ash using electricity；
Water is met：Sulphates content is less than 0.0027mg/mm3, salt content is no more than 0.005mg/mm3, pH value be not less than 4,
Greasy dirt, mud are not contained；
Fine aggregate is natural sand or Machine-made Sand or mixed sand, and siliceous content is not less than 25%；
Coarse aggregate is rubble or crushed gravel or cobble；Cobble nominal maximum aggregate size is not more than 19.0mm, crushed gravel most grand duke
Particle diameter is claimed to be not more than 26.5mm, rubble nominal maximum aggregate size is not more than 31.5mm；
Cement is 425# portland cements.
The flexural tensile strength of prefabricated cement board 1 is not less than 4.5MPa, and length is 250cm, and width is 150-200cm, thickness
For 18-25cm.
The prefabricated flow of prefabricated cement board 1 is：Mixed material formation concrete, according to template casting concrete, by supporting
Raw reach is stripped after intensity, and same movement, stacking form batch Prefabrication.
Concrete mixing requirement：Concrete stirring should use forced concrete mixing machine, production capacity and material quantity phase
Adapt to, mixing time is provided and tests determined by concrete agitator operation instructions.Concrete performance requirement：Mixing it is mixed
Solidifying soil answers solid colour, must not there is isolation and excreting water phenomenon, meets workability, mechanical property, endurance quality requirement.
Concrete transportation requirement：Transport capacity should be adapted with the rate of set and speed of perfusion of concrete, should make to pour
Remain to keep its uniformity and the defined slump when work is uninterruptedly and concrete transports to pouring location.
The requirement of template：Preferably preferentially use steel form.Should be smooth between template plate face, seam is tight, not spillage, it is ensured that knot
Structure beyond the region of objective existence shows up attractive in appearance, and the lines flow smoothly.Steel can use existing national standards《Carbon structural steels》(GB700) standard in.Pour
Before building concrete, template should brushing releasing agent, the releasing agent of exposed face concrete blinding should use same kind, must not use
The oil plants such as used oil, and must not pollute at the construction joint of reinforcing bar and concrete.
The requirement of model sheetinstallat：After the completion of model sheetinstallat, its size, plan-position and cope level etc. should meet design will
Ask, node contacts should be firm.The built-in fitting and reserving hole being fixed in template must not be omitted, install and answer firm, position Ying Zhun
Really.
Concrete is poured：Concrete should be by certain thickness, order and direction placement layer by layer, should be in lower-layer concrete initial set
Or the upper layer concrete of completion is poured before remolding.In inclined plane during casting concrete, rise should be successively extended since lower,
Keep horizontal slice.During casting concrete, vibrator jolt ramming should be used, when the position of vibrator jolt ramming can not be used really,
Just can manually it make firm by ramming.Pouring for concrete should be carried out continuously, when must such as be interrupted for some reason, and its break time should be less than front layer and mix
The time coagulated the presetting period of soil or can remolded.
The requirement of health：After the completion of concreting, should be covered and be sprinkled water as early as possible, early after slurry is received maintenance.It is mixed
The requirement of solidifying soil maintenance water is identical with mixing water.The watering curing time of concrete is generally 7d, can be according to the wet of air
Situations such as degree, temperature and cement type and the additive mixed, extend as one sees fit or shorten.Number of times is sprinkled water daily to keep coagulation
Native surface is degree often in moisture state.Concrete strength is reached before 1.2MPa, must not be trampled thereon；Intensity reaches
Before 2.5MPa, it must not be made to bear the loads such as pedestrian, means of transport.
The requirement of form removable：2.5MPa should be reached in concrete crushing strength, and can guarantee that its surface and corner angle will not
It can be removed when being damaged because of form removal.
Movement and stacking are required：Concrete strength reach design strength grade 75% after can movement, storage space should
It is smooth, solid, there should not be differential settlement, and place should have guarded drainage facility.Chock should be set during stacking, and branch pad position is preferably pressed
Design hoisting point position and determine that its deviation is no more than 200mm；During multi-layer stacking, each layer chock should be located on same-vertical plane, and
The number of plies is no more than 3 layers.
The upper surface of prefabricated cement board 1 is provided with reserved suspension hook, and by reserving suspension hook, prefabricated water is sling or put down to vehicle equipment
Mud plate 1, completes the movement or splicing of prefabricated cement board 1.
The transverse joint of prefabricated cement board 1 uses non-occlusive trapezium structure：
The stitching portion of two pieces of prefabricated cement boards 1 at transverse joint is trapezoidal stepped, and the height of respective two-stage vertical plane
It is equal, the distance between two-stage vertical plane 9cm.
As shown in figure 3, the longitudinal joint of prefabricated cement board 1 is using occlusion trapezium structure：
The stitching portion of two pieces of prefabricated cement boards 1 at longitudinal joint is trapezoidal stepped, and the height of respective two-stage vertical plane
It is equal, the distance between two-stage vertical plane 9cm；Set at the inclined-plane of the trapezoidal step structure of one piece of upper prefabricated cement board 1
There is raised tooth engaged straight down；Provided with vertical at the inclined-plane of the trapezoidal step structure of one piece of prefabricated cement board 1 under
Downward occlusal crib.
As shown in figure 4, the spelling paving process of prefabricated cement board 1 is：
The vicinity that prefabricated cement board 1 is transported to cement pavement to be laid has been paved 9 positions using vehicle equipment；Use fortune
The connecting shackle 8 for carrying the lower end of suspension bracket 7 of equipment hooks the reserved suspension hook of cement pavement, will using the mounting structure 4 of vehicle equipment
Prefabricated cement board 1 is sling, and is hung to the surface of cement pavement position to be laid；Adjusted and transported by device for adjusting posture 5
The posture of equipment is carried, judges prefabricated cement board 1 whether just to cement pavement to be laid by the camera 6 of device for adjusting posture 5
Position；Prefabricated cement board 1 is put down when prefabricated cement board 1 is just to the position of cement pavement to be laid, prefabricated cement board 1 is completed
Spelling paving process.
Certain section of rural area road surface is handled using the permanent rural highway cement pavement of the easy care, according to rural highway
Design Lane bears design axle and carries accumulative effect number of times 30000~1000000 in medium traffic class of loading, i.e. design reference period
Secondary, thickness is 22cm, and flexural tensile strength is not less than 4.5MPa.Intermediate layer is that graded broken stone base thickness is 15cm, and orlop is road
Base, compactness is not less than 93%, and 3-5cm sand bedding courses 2 are provided between graded broken stone 3 and prefabricated cement board 1.
In the present embodiment, current rural highway cement pavement face is wide in the majority with 4~6 meters, in the present embodiment exemplified by 5 meters,
Carry out piecemeal.
Cement Concrete Pavement Slab piecemeal should be tried one's best greatly, and the advantage on such a road surface could be embodied in entity project, protected
While demonstrate,proving plate prefabricated quality, increase the comfortableness of driving, and improve the efficiency of installation, but with the increase of volume, plate
Deadweight can also increase.1.5m × 2.5m plate is from weighing 2 tons, and 2m × 2.5m plates are conducted oneself with dignity nearly 3 tons.In view of construction and after
The convenience that phase safeguards, plate maximum uses 2m × 2.5m.For the road surface that width is 5 meters, it is considered to using 5 blocks of 1m × 2m plates,
Or 2 blocks of 1.5m × 2.5m plates add 1 block of 2m × 2.5m plate.
The raw material of prefabricated cement board 1 is water, flyash, cement, fine aggregate, coarse aggregate, the quality parts ratio of each raw material according to
It is secondary to be：1：0.5：2.5：2.7：6.3.
It is attached between the road deck of cast in situs, plate using embedded bar.Assembled Cement Concrete Pavement Slab,
Embedded bar is unable to for the requirement that meets install convenient, to avoid the seam between plate from being damaged under Driving Loading,
The seam construction between plate must be rationally determined, the damage of plate just can be effectively reduced.
During actual road surfacing, route direction of advance uses the ladder shaped connecting seam with occlusion；Laterally using without occlusion
Ladder shaped connecting seam.Thus take into account the convenience for considering globality and later maintenance.
The ladder shaped connecting seam construction of left and right overlap joint is as shown in figure 3, the relative two ends connect of seam crossing are respectively provided with trapezoidal contiguous block.By
Cross-sectional view understand, two docking plate seam crossing structures be it is complementary, the trapezoidal connecting block structure include projection, changeover portion,
Root section.Raised section height 10cm, width 9cm, root section height 12cm, changeover portion height 2cm, width 9cm are convex for connecting
Play section and root section.
Route direction of advance is used with the ladder shaped connecting seam being engaged, structure type as shown in Figure 4, raised section height 9.6cm,
Width 13cm, root section height 12.4cm, changeover portion height 2.8cm, width 13cm.Structure type is in structure type described in Fig. 3
On the basis of, occlusion is set on inclined-plane, for strengthening the linking intensity between plate.
The spelling for carrying out prefabricated cement board 1 using equipment as shown in Figure 5 spreads process：
The vicinity that prefabricated cement board 1 is transported to cement pavement to be laid has been paved 9 positions using vehicle equipment；Use fortune
The connecting shackle 8 for carrying the lower end of suspension bracket 7 of equipment hooks the reserved suspension hook of cement pavement, will using the mounting structure 4 of vehicle equipment
Prefabricated cement board 1 is sling, and is hung to the surface of cement pavement position to be laid；Adjusted and transported by device for adjusting posture 5
The posture of equipment is carried, judges prefabricated cement board 1 whether just to cement pavement to be laid by the camera 6 of device for adjusting posture 5
Position；Prefabricated cement board 1 is put down when prefabricated cement board 1 is just to the position of cement pavement to be laid, prefabricated cement board 1 is completed
Spelling paving process.
In summary, the invention provides a kind of rural highway cement pavement, panel and the common stress of basic unit so that whole
Pavement structure stress is more reasonable, can reduce road surface breakage disease with prolonging service life of pavement, mixed using prefabrication cement
Solidifying dirt road panel, site machinery assembling construction is more maintained easily, and can be carried out quick-replaceable for indivedual damaged plates, be subtracted
Few interference to normal pass.
Although combined preferred embodiment is described in detail to the present invention, those skilled in the art should
What it is when understanding is that various amendments are all allowed, and they both fall within this hair in the case of without prejudice to spirit of the invention and essence
Among bright scope of the claims.
Claims (10)
1. a kind of permanent rural highway cement pavement of easy care, it is characterised in that the cement pavement includes from top to bottom：Cement
Concrete flag, graded broken stone base, roadbed；
The Cement Concrete Pavement Slab is spliced for prefabricated cement board；
The graded broken stone base uses graded broken stone；
The roadbed filling using compacting of the roadbed, compactness is not less than 93%.
2. cement pavement according to claim 1, it is characterised in that the raw material of the prefabricated cement board be water, flyash,
Cement, fine aggregate, coarse aggregate；
The quality parts ratio of each raw material is followed successively by：1：0.4-0.6：2.3-2.8：2.5-3.0：6.0-7.0；
The permission mass deviation that cement, flyash, water are weighed is ± 1%, and the permission mass deviation that coarse aggregate, fine aggregate are weighed is
± 2%.
3. cement pavement according to claim 2, it is characterised in that the flyash using electricity gather dust I, II grade of dry row or
Fine-ground fly-ash；
The water is met：Sulphates content is less than 0.0027mg/mm3, salt content is no more than 0.005mg/mm3, pH value be not less than 4,
Greasy dirt, mud are not contained；
The fine aggregate is natural sand or Machine-made Sand or mixed sand, and siliceous content is not less than 25%；
The coarse aggregate is rubble or crushed gravel or cobble；The cobble nominal maximum aggregate size is not more than 19.0mm, the broken ovum
Stone nominal maximum aggregate size is not more than 26.5mm, and the rubble nominal maximum aggregate size is not more than 31.5mm；
The cement is 425# portland cements.
4. cement pavement according to claim 3, it is characterised in that the flexural tensile strength of the prefabricated cement board is not less than
4.5MPa, and length is 250cm, width is 150-200cm, and thickness is 18-25cm.
5. the cement pavement according to claim 3 or 4, it is characterised in that the prefabricated flow of the prefabricated cement board is：It is mixed
Raw material formation concrete is closed, according to template casting concrete, is stripped, same movement, stacking, is formed after health reaches intensity
Batch Prefabrication.
6. cement pavement according to claim 5, it is characterised in that mixed material formation concrete uses forced action type coagulation
Native mixing machine, until the concrete color of mixing is consistent, untill not isolating with excreting water phenomenon, stops stirring；
The template uses steel form, and plate face is smooth, seam tight, steel used according to《Carbon structural steels》(GB700) in
Standard choose；Before concreting, smearing release agent in the template；
During the concreting, pressed using vibrator jolt ramming, and order from the bottom to top is successively poured, i.e., in lower-layer concrete
Initial set pours before remold and completes to go up layer concrete；
The concrete is completed after pouring, and covered and sprinkled water maintenance, and does not have watering in 7 days once；
When the intensity of the concrete reaches 2.5MPa, the template is removed.
7. cement pavement according to claim 6, it is characterised in that hung provided with reserved the upper surface of the prefabricated cement board
Hook, by the reserved suspension hook, the prefabricated cement board is sling or put down to vehicle equipment, completes the movement of the prefabricated cement board
Or splicing.
8. cement pavement according to claim 7, it is characterised in that the transverse joint of the prefabricated cement board is using non-occlusive ladder
Shape structure：
The stitching portion of two pieces of prefabricated cement boards at transverse joint is trapezoidal stepped, and the height phase of respective two-stage vertical plane
Deng the distance between two-stage vertical plane 9cm.
9. cement pavement according to claim 7, it is characterised in that the longitudinal joint of the prefabricated cement board is trapezoidal using being engaged
Structure：
The stitching portion of two pieces of prefabricated cement boards at longitudinal joint is trapezoidal stepped, and the height phase of respective two-stage vertical plane
Deng the distance between two-stage vertical plane 9cm；Set at the inclined-plane of the trapezoidal step structure of one piece of upper prefabricated cement board
There is raised tooth engaged straight down；Provided with perpendicular at the inclined-plane of the trapezoidal step structure of one piece of prefabricated cement board under
Straight downward occlusal crib.
10. cement pavement according to claim 8 or claim 9, it is characterised in that the spelling of the prefabricated cement board spreads process and is：
The vicinity that prefabricated cement board is transported to cement pavement to be laid has been paved position using vehicle equipment；Use vehicle equipment
The connecting shackle of suspension bracket lower end hook the reserved suspension hook of cement pavement, using the mounting structure of vehicle equipment by prefabricated cement board
Sling, and be hung to the surface of cement pavement position to be laid；The posture of vehicle equipment is adjusted by device for adjusting posture,
By the camera of device for adjusting posture judge prefabricated cement board whether the position just to cement pavement to be laid；Work as pre-cast concrete
Prefabricated cement board is put down when plate is just to the position of cement pavement to be laid, the spelling paving process of prefabricated cement board is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348759.2A CN107151958B (en) | 2017-05-17 | 2017-05-17 | Permanent rural highway cement road surface of easy maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348759.2A CN107151958B (en) | 2017-05-17 | 2017-05-17 | Permanent rural highway cement road surface of easy maintenance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107151958A true CN107151958A (en) | 2017-09-12 |
| CN107151958B CN107151958B (en) | 2020-02-21 |
Family
ID=59792957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710348759.2A Active CN107151958B (en) | 2017-05-17 | 2017-05-17 | Permanent rural highway cement road surface of easy maintenance |
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| Country | Link |
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| CN (1) | CN107151958B (en) |
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| CN107602145A (en) * | 2017-09-13 | 2018-01-19 | 无锡市交通工程有限公司 | A kind of high-ductility concrete and the concrete road surface using its cast |
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| CN109577149A (en) * | 2018-12-03 | 2019-04-05 | 周峻宇 | A kind of kerbstone Paving Techniques and paver |
| CN109577149B (en) * | 2018-12-03 | 2021-01-26 | 滁州市宏图建设有限公司 | Curb paver |
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| CN107151958B (en) | 2020-02-21 |
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