CN207003171U - Permanent composite pavement structure for old asphalt pavement transformation - Google Patents
Permanent composite pavement structure for old asphalt pavement transformation Download PDFInfo
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- CN207003171U CN207003171U CN201720897234.XU CN201720897234U CN207003171U CN 207003171 U CN207003171 U CN 207003171U CN 201720897234 U CN201720897234 U CN 201720897234U CN 207003171 U CN207003171 U CN 207003171U
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Abstract
The utility model provides a kind of permanent composite pavement structure for old asphalt pavement transformation, include high-performance cement concrete layer successively from top to bottom, asphalt surface course, basic unit, underlayment and roadbed, high-performance cement concrete layer is installed on asphalt surface course, asphalt surface course is installed in basic unit, or, high-performance cement concrete layer is replaced asphalt surface course and is installed in basic unit, basic unit is installed on underlayment, underlayment is installed on roadbed, vertical recess runs through asphalt surface course and basic unit, if there is no asphalt surface course, then only run through basic unit, high-performance cement concrete column is filled in vertical recess and connects high-performance cement concrete layer and underlayment respectively.Permanent composite pavement structure Stability Analysis of Structures of the present utility model for old asphalt pavement transformation, excellent performance, it is hardly damaged, service life length is ingenious in design, and construction environmental protection, convenient, cost is low, suitable for large-scale promotion application.
Description
Technical field
Road pavement technical field of structures is the utility model is related to, more particularly, to asphalt pavement technique field, especially
Refer to a kind of permanent composite pavement structure for old asphalt pavement transformation.
Background technology
With the development of high-grade highway particularly expressway construction, asphalt concrete pavement one jumps and turns into road surface
Principal mode.
But the problem of new comes one after another, national economy high speed development and the volume of traffic that brings increase rapidly, vehicle is large-scale
Change, serious, the vehicle channelization of overload etc., make bituminous paving be faced with severe tests.Heavy traffic road due to not carrying out in time
Preventive maintenance, bituminous paving is serious with the increase performance degradation of active time, structural damage occurs.
At present mostly scheme is carried out for there is the bituminous paving of structural damage according to the technical requirements of medium-capital overhauling specification
Design, medium-capital overhauling conceptual design generally required to the acute belly breaking of original road, digs that pavement structure is long in time limit and outer freight volume
Greatly, site operation pole is not environmentally.
Accordingly, it is desirable to provide a kind of pavement structure transformed the bituminous paving for structural damage occur, its structure
It is stable, excellent performance, it is hardly damaged, service life length, construction environmental protection is convenient.
Utility model content
In order to overcome it is above-mentioned in the prior art the shortcomings that, a purpose of the present utility model, which is to provide, a kind of is used for old drip
The permanent composite pavement structure of blue or green Pavement Improvement, its Stability Analysis of Structures, excellent performance, is hardly damaged, and service life length, is suitable to
Large-scale promotion application.
Another object of the present utility model is to provide a kind of permanent composite pavement for old asphalt pavement transformation
Structure, its is ingenious in design, and construction environmental protection, convenient, cost is low, suitable for large-scale promotion application.
To achieve the above objectives, in first aspect of the present utility model, there is provided a kind of to be used for what old asphalt pavement was transformed
Permanent composite pavement structure, is characterized in, includes high-performance cement concrete layer, asphalt surface course, base successively from top to bottom
Layer, underlayment and roadbed, the high-performance cement concrete layer are installed on the asphalt surface course, and the asphalt surface course is installed in
In the basic unit, the basic unit is installed on the underlayment, and the underlayment is installed on the roadbed, and described being used for is old
The permanent composite pavement structure of bituminous paving transformation also includes vertical recess, and the vertical recess runs through the asphalt surface course
With the basic unit, the high-performance cement concrete column is filled in the vertical recess and connects the high-performance cement respectively
Concrete layer and the underlayment.
The high performance concrete of the high-performance cement concrete layer possess splendid impervious, resistance to compression, anti-folding, freeze thawing resistance,
Etc. performance, and drying shrinkage is small, slump is good, but needs the moisture-keeping maintaining of certain time length, and the key technical indexes is as follows：(1) 4h resistance to compressions
Intensity >=40MPa, 28d compression strength >=80MPa；(2) 28d rupture strengths >=15.0MPa；(3) concrete limitation drying shrinkage≤200
μ ε, (4) slump are 10.0 ± 2.0cm；(5) 2h~4h moisture-keeping maintaining need to be carried out；(6) seepage-resistant grade has good more than P20
Good freeze thawing resistance characteristic.
The high performance concrete can be suitably composed with any, it is preferred that the high performance concrete is by common
Portland cement：Silicon ash：Sulphate aluminium cement：Sand：Microlith：Steel fibre：Water：Additive：Retarder is with mass ratio 260:40:
450:650:800:80:187:10:6.8 mix.
The high-performance cement concrete column and the high-performance cement concrete layer can be two separate parts, mutually
Link together, or a single part, be integrally formed, it is preferred that the high-performance cement concrete column and described
High-performance cement concrete layer is integrally formed.
The vertical recess can be any suitable vertical recess, it is preferred that the vertical recess is selected from vertical shrinkage pool
At least one of with vertical groove.
The number of the vertical recess can determine as needed, it is preferred that the number of the vertical recess is multiple, more
Goodly, multiple vertical recesses are evenly distributed in the asphalt surface course and the basic unit.
The center of circle of four adjacent vertical shrinkage pools can be with located at any suitable location, more preferably, and four adjacent described
On four angles of the rhombus that the center of circle of vertical shrinkage pool is 90 ° positioned at square or each side angle.
The aperture of the vertical shrinkage pool can determine as needed, more preferably, the aperture of the vertical shrinkage pool for 150mm~
250mm。
Interval between two vertical shrinkage pools can determine as needed, more preferably, two vertical shrinkage pools it
Between at intervals of 1m~2m.
The width of the vertical groove can determine as needed, more preferably, the width of the vertical groove for 100mm~
200mm。
Spacing between two vertical grooves can determine as needed, more preferably, two vertical grooves it
Between spacing be 3m~5m.
The minimum range at the vertical edge of the recess to the high-performance cement concrete layer can determine as needed,
It is preferred that minimum range >=3 times the high-performance water at the vertical edge of the recess to the high-performance cement concrete layer
The thickness of the thickness of cement concrete layer and≤15 times of high-performance cement concrete layers.In other words, the vertical recess away from
From the thickness and≤15 of the minimum range >=3 times high-performance cement concrete layer at the edge of road outer rim such as asphalt surface course
The thickness of the high-performance cement concrete layer again.
The thickness of the high-performance cement concrete layer can determine as needed, it is preferred that the high-performance cement mixes
Solidifying the thickness of the layer is 8cm~15cm.
In order to improve old asphalt pavement structural strength uniformity, it is preferred that described is used for old asphalt pavement transformation forever
Long property composite pavement structure also includes high-performance water cement concrete intensive aspect, and the high-performance water cement concrete intensive aspect plugs
In the asphalt surface course and connect the high-performance cement concrete layer.
The high-performance cement concrete column and the high-performance water cement concrete intensive aspect can be two separate parts,
Interconnect, or a single part, be integrally formed, more preferably, the high-performance cement concrete column and
The high-performance water cement concrete intensive aspect is integrally formed.
Old asphalt pavement generally includes asphalt surface course, basic unit, underlayment and roadbed, the asphalt surface course successively from top to bottom
It is installed in the basic unit, the basic unit is installed on the underlayment, and the underlayment is installed on the roadbed, above-mentioned
Preparation method for the permanent composite pavement structure of old asphalt pavement transformation comprises the following steps：
(1) vertical recess is set on the old asphalt pavement, and the vertical recess is through the asphalt surface course and described
Basic unit；
(2) pave high-performance water cement concrete on the old asphalt pavement, a part of high-performance water cement concrete
The vertical recess is poured into, the remaining high-performance cement concrete speading is in the asphalt surface course and a part of high property
On energy cement concrete, after moisture-keeping maintaining, a part of high-performance water cement concrete forms high-performance cement concrete column,
The residue high-performance water cement concrete forms high-performance cement concrete layer.
In the step (1), the vertical recess can be vertical shrinkage pool or vertical groove.
, can be to the asphalt surface course especially intensity of the old asphalt pavement prior to, concurrently with, or after the step (1)
The place of deficiency carries out the disease such as injecting treatment, pit and crack to the asphalt surface course of old asphalt pavement and repaired.It is used
Slurry can be high-performance water cement concrete.
In the step (2), the time of moisture-keeping maintaining is 2h~4h, can extend curing time during such as low-temperature construction.
In second aspect of the present utility model, there is provided another kind is used for the permanent combined type road of old asphalt pavement transformation
Face structure, is characterized in, includes high-performance cement concrete layer, basic unit, underlayment and roadbed, the high property successively from top to bottom
Energy cement concrete layer is installed in the basic unit, and the basic unit is installed on the underlayment, and the underlayment is installed in institute
State on roadbed, the described permanent composite pavement structure for being used for old asphalt pavement transformation also includes vertical recess, described perpendicular
Run through the basic unit to recess, the high-performance cement concrete column is filled in the vertical recess and connects the height respectively
Performance cement concrete layer and the underlayment.
Same as above, the high performance concrete of the high-performance cement concrete layer possesses splendid impervious, resistance to compression, anti-
The performances such as folding, freeze thawing resistance, and drying shrinkage is small, slump is good, but the moisture-keeping maintaining of certain time length is needed, the key technical indexes is as follows：
(1) 4h compression strength >=40MPa, 28d compression strength >=80MPa；(2) 28d rupture strengths >=15.0MPa；(3) concrete limits
The μ ε of drying shrinkage≤200, (4) slump is 10.0 ± 2.0cm；(5) 2h~4h moisture-keeping maintaining need to be carried out；(6) seepage-resistant grade exceedes
P20, there is good freeze thawing resistance characteristic.
The high-performance cement concrete column and the high-performance cement concrete layer can be two separate parts, mutually
Link together, or a single part, be integrally formed, it is preferred that the high-performance cement concrete column and described
High-performance cement concrete layer is integrally formed.
The vertical recess can be any suitable vertical recess, it is preferred that the vertical recess is selected from vertical shrinkage pool
At least one of with vertical groove.
The number of the vertical recess can determine as needed, it is preferred that the number of the vertical recess is multiple, more
Goodly, multiple vertical recesses are evenly distributed in the basic unit.
The center of circle of four adjacent vertical shrinkage pools can be with located at any suitable location, more preferably, and four adjacent described
On four angles of the rhombus that the center of circle of vertical shrinkage pool is 90 ° positioned at square or each side angle.
The aperture of the vertical shrinkage pool can determine as needed, more preferably, the aperture of the vertical shrinkage pool for 150mm~
250mm。
Interval between two vertical shrinkage pools can determine as needed, more preferably, two vertical shrinkage pools it
Between at intervals of 1m~2m.
The width of the vertical groove can determine as needed, more preferably, the width of the vertical groove for 100mm~
200mm。
Spacing between two vertical grooves can determine as needed, more preferably, two vertical grooves it
Between spacing be 3m~5m.
The minimum range at the vertical edge of the recess to the high-performance cement concrete layer can determine as needed,
It is preferred that minimum range >=3 times the high-performance water at the vertical edge of the recess to the high-performance cement concrete layer
The thickness of the thickness of cement concrete layer and≤15 times of high-performance cement concrete layers.In other words, the vertical recess away from
Thickness and≤15 times of institutes from the minimum range >=3 times high-performance cement concrete layer at the edge of road outer rim such as basic unit
State the thickness of high-performance cement concrete layer.
The thickness of the high-performance cement concrete layer can determine as needed, it is preferred that the high-performance cement mixes
Solidifying the thickness of the layer is 8cm~15cm.
In order to improve old asphalt pavement structural strength uniformity, it is preferred that described is used for old asphalt pavement transformation forever
Long property composite pavement structure also includes high-performance water cement concrete intensive aspect, and the high-performance water cement concrete intensive aspect plugs
In the basic unit and connect the high-performance cement concrete layer..
The high-performance cement concrete column and the high-performance water cement concrete intensive aspect can be two separate parts,
Interconnect, or a single part, be integrally formed, more preferably, the high-performance cement concrete column and
The high-performance water cement concrete intensive aspect is integrally formed.
Old asphalt pavement generally includes asphalt surface course, basic unit, underlayment and roadbed, the asphalt surface course successively from top to bottom
It is installed in the basic unit, the basic unit is installed on the underlayment, and the underlayment is installed on the roadbed, above-mentioned
Preparation method for the permanent composite pavement structure of old asphalt pavement transformation comprises the following steps：
A. asphalt surface course described in milling；
B., vertical recess is set in the basic unit, and the vertical recess runs through the basic unit；
C. pave high-performance water cement concrete in the basic unit, and a part of high-performance water cement concrete pours into described
Vertical recess, the remaining high-performance cement concrete speading is in the basic unit and a part of high-performance water cement concrete
On, after moisture-keeping maintaining, a part of high-performance water cement concrete forms high-performance cement concrete column, the residue height
Performance cement concrete forms high-performance cement concrete layer.
In the step B, the vertical recess can be vertical shrinkage pool or vertical groove.
Prior to, concurrently with, or after the step B, the place of the basic unit especially intensity deficiency is carried out at slip casting
The diseases such as reason, pit and crack to basic unit are repaired.Slurry therewith can be high-performance water cement concrete.
In the step C, the time of moisture-keeping maintaining is 2h~4h, can extend curing time during such as low-temperature construction.
The beneficial effects of the utility model are：
(1) the permanent composite pavement structure of the present utility model for old asphalt pavement transformation wraps successively from top to bottom
High-performance cement concrete layer, asphalt surface course, basic unit, underlayment and roadbed are included, high-performance cement concrete layer is installed in pitch
On surface layer, asphalt surface course is installed in basic unit, or, high-performance cement concrete layer replaces asphalt surface course and is installed in basic unit
On, basic unit is installed on underlayment, and underlayment is installed on roadbed, in addition to vertical recess, and vertical recess runs through asphalt surface course
And basic unit, if there is no asphalt surface course, then vertical recess only runs through basic unit, and high-performance cement concrete column is filled in vertical recessed
High-performance cement concrete layer and underlayment are connected in portion and respectively, therefore, its Stability Analysis of Structures, excellent performance, is hardly damaged, makes
With long lifespan, suitable for large-scale promotion application.
(2) the permanent composite pavement structure of the present utility model for old asphalt pavement transformation wraps successively from top to bottom
High-performance cement concrete layer, asphalt surface course, basic unit, underlayment and roadbed are included, high-performance cement concrete layer is installed in pitch
On surface layer, asphalt surface course is installed in basic unit, or, high-performance cement concrete layer replaces asphalt surface course and is installed in basic unit
On, basic unit is installed on underlayment, and underlayment is installed on roadbed, in addition to vertical recess, and vertical recess runs through asphalt surface course
And basic unit, if there is no asphalt surface course, then vertical recess only runs through basic unit, and high-performance cement concrete column is filled in vertical recessed
High-performance cement concrete layer and underlayment are connected in portion and respectively, therefore, its is ingenious in design, construction environmental protection, convenient, cost
It is low, suitable for large-scale promotion application.
These and other objects, feature and advantage of the present utility model, will by following detailed descriptions, accompanying drawing and right
Try to achieve to fully demonstrate, and can be achieved by means, device and the combinations thereof specially pointed out in appended claims.
Brief description of the drawings
Fig. 1 is to form the permanent composite pavement structure of the present utility model for old asphalt pavement transformation one specific
The main view perspective diagram of vertical shrinkage pool is set during embodiment to old asphalt pavement.
Fig. 2 is to form the permanent composite pavement structure of the present utility model for old asphalt pavement transformation one specific
The schematic top plan view of vertical shrinkage pool is set during embodiment to old asphalt pavement.
Fig. 3 is another tool to form the permanent composite pavement structure of the present utility model for old asphalt pavement transformation
The side view perspective diagram of vertical groove is set during body embodiment to old asphalt pavement.
Fig. 4 is another tool to form the permanent composite pavement structure of the present utility model for old asphalt pavement transformation
The schematic top plan view of vertical groove is set during body embodiment to old asphalt pavement.
(symbol description)
1 asphalt surface course；11 superficial layers；Surface layer in 12；13 cutting optimals；2 basic units；3 underlayments；4 roadbeds；5 vertical shrinkage pools；6
Vertical groove.
Embodiment
In order to be more clearly understood that technology contents of the present utility model, described in detail especially exemplified by following examples.It is all
Percentage be weight percent, unless otherwise specified.
Raw material used in embodiment 1- embodiments 3 has：
(strength grade is 52.5 grades of portland cement to cement, C3A content is 8% weight, purchased from Anhui Conch Cement
Limited company)；
(Sai Pusen silicon ashes, average grain diameter are 0.1 μm to silicon ash, SiO2Content be 98% weight, activity index 115%,
Purchased from Shandong Bo Ken silicon materials Co., Ltd)；
Sulphate aluminium cement (strength grade is 42.5 grades, purchased from Anhui Conch Cement limited company)；
Sand, microlith (being purchased from Jiangsu Ya Bang mining industry Co., Ltd)；
Steel fibre (copper facing steel fibre, a diameter of 0.22mm, length 14mm, tensile strength 2200MPa, purchased from Hebei
Square moral silk screen products factory)；
Additive (8525 type water reducers, is a kind of polycarboxylate water-reducer, water-reducing rate 40%, work is built purchased from Shanghai Mace spy
High-tech architecture Chemical Co., Ltd.)；
Retarder (borax, purchased from Shanghai Hui Guang Fine Chemical Co., Ltd)
Embodiment 1
Old asphalt pavement includes asphalt surface course 1, basic unit 2, underlayment 3 and roadbed 4 successively from top to bottom, and asphalt surface course 1 is pacified
It is located in basic unit 2, basic unit 2 is installed on underlayment 3, and underlayment 3 is installed on roadbed 4, and asphalt surface course 1 wraps successively from top to bottom
Include superficial layer 11, middle surface layer 12, cutting optimal 13.
Construction method for the permanent composite pavement structure of old asphalt pavement transformation comprises the following steps：A, will set
The position of the vertical shrinkage pool 5 of meter marks on old asphalt pavement (namely asphalt surface course 1), the position in the center of circle of each vertical shrinkage pool 5
Put line and form the rhombus distribution that angle is 90 °, the length of side is 115cm, the most narrow spacing of each vertical shrinkage pool 5 to the outer rim of asphalt surface course 1
From for 24cm；B, using the core drilling machine of 15cm diameters in each mark position drilling old asphalt pavement, the bottom mark of depth to basic unit 2
Height, refer to shown in Fig. 1 and Fig. 2；C, old asphalt pavement surface is handled, carries out slip casting joint filling, milling and cleaning, joint filling is used to starch
Material can be high-performance water cement concrete；D, according to match ratio (Portland cement：Silicon ash：Sulphate aluminium cement：Sand：Carefully
Stone：Steel fibre：Water：Additive：The mass ratio 260 of retarder:40:450:650:800:80:187:10:6.8) mix high-performance
Cement concrete；E, the 8cm that the uniform high-performance water cement concrete of mix paved on old asphalt pavement using paver is thick
High-performance cement concrete layer forms high-performance cement concrete column in vertical shrinkage pool 5 and on the surface of asphalt surface course 1 simultaneously
Gap in formed high-performance water cement concrete intensive aspect；F, 4h moisture-keeping maintaining is carried out, treats that compression strength reaches 40MPa, it is curved
Tensile strength reaches 5MPa can open to traffic.
Embodiment 2
Old asphalt pavement includes asphalt surface course 1, basic unit 2, underlayment 3 and roadbed 4 successively from top to bottom, and asphalt surface course 1 is pacified
It is located in basic unit 2, basic unit 2 is installed on underlayment 3, and underlayment 3 is installed on roadbed 4, and asphalt surface course 1 wraps successively from top to bottom
Include superficial layer 11, middle surface layer 12, cutting optimal 13.
Construction method for the permanent composite pavement structure of old asphalt pavement transformation comprises the following steps：A, will set
The position of the vertical groove 6 of meter marks in old asphalt pavement (namely asphalt surface course 1), to be subsequently formed along old asphalt pavement
Laterally uniform vertical groove 6, groove width 10cm, each groove is at a distance of 300cm, and each vertical groove to the outer rim of asphalt surface course 1 is most
Small distance is 50cm；B, fluting is formed in each mark position cutting old asphalt pavement using cutting machine, and requires groove depth to basic unit 2
Bottom absolute altitude, be consequently formed vertical groove 6, refer to shown in Fig. 3 and Fig. 4；C, old asphalt pavement surface is handled, slip casting is carried out and fills out
Seam, milling and cleaning, joint filling slurry therewith can be high-performance water cement concretes；D, according to match ratio (Portland cement：
Silicon ash：Sulphate aluminium cement：Sand：Microlith：Steel fibre：Water：Additive：Retarder mass ratio is 260:40:450:650:800:
80:187:10:6.8) mix high-performance water cement concrete；E, the uniform high-performance water cement concrete of mix is existed using paver
The high-performance cement concrete layer thick 11cm that paved on old asphalt pavement forms high-performance cement coagulation in vertical groove 6 simultaneously
Earth pillar and the formation high-performance water cement concrete intensive aspect in the gap on the surface of asphalt surface course 1；F, 3h moisture-keeping maintaining is carried out.
Embodiment 3
Old asphalt pavement includes asphalt surface course 1, basic unit 2, underlayment 3 and roadbed 4 successively from top to bottom, and asphalt surface course 1 is pacified
It is located in basic unit 2, basic unit 2 is installed on underlayment 3, and underlayment 3 is installed on roadbed 4, and asphalt surface course 1 wraps successively from top to bottom
Include superficial layer 11, middle surface layer 12, cutting optimal 13.
Construction method for the permanent composite pavement structure of old asphalt pavement transformation comprises the following steps：A, milling
15cm asphalt surface course 1；B, the position of the vertical shrinkage pool 5 of design is marked in basic unit 2, the position in the center of circle of each vertical shrinkage pool 5
Line forms the rhombus distribution that angle is 90 °, the length of side is 159cm, and each vertical shrinkage pool 5 to minimum range of the outer rim of basic unit 2 is
225cm；C, using the core drilling machine of 25cm diameters in each mark position drilling basic unit 2, the bottom absolute altitude of depth to basic unit 2；D, handle
The surface of basic unit 2, it can be high-performance water cement concrete to carry out slip casting joint filling, milling and cleaning, joint filling slurry therewith,；E, according to
Match ratio (Portland cement：Silicon ash：Sulphate aluminium cement：Sand：Microlith：Steel fibre：Water：Additive：Retarder mass ratio
For 260:40:450:650:800:80:187:10:6.8) mix high-performance water cement concrete；F, by the uniform high-performance of mix
Cement concrete utilizes the high-performance cement concrete layer thick 15cm shape in vertical shrinkage pool 5 simultaneously that paved in paver basic unit 2
High-performance water cement concrete intensive aspect is formed into high-performance cement concrete column and in the gap on the surface of basic unit 2；G, carry out
2h moisture-keeping maintaining..
The composite pavement structure that embodiment 1- embodiments 3 are formed is compared with protobitumen pavement structure：
(1) service life of cement concrete pavement is substantially 2 times of bituminous paving service life, adds the steel fibre way of escape
Face globality enhancing is hardly damaged；
(2) reduce disease, and certain basic unit and subgrade defect can be resisted:Flood is not easy to destroy by rush of water, when basic unit or roadbed
Reinforced concrete pavement remains to normal use when occurring small-sized empty；
(3) temperature tolerance is strong, in extreme air high/low temperature timeinvariance；
(4) fire resistance is high, and cement concrete pavement is incombustible material, concrete be thermal inertia material i.e. thermal conductivity factor very
It is small, surface temperature can be only achieved to its internal temperature after concrete component heating and some time constant temperature, such as standing for length of side 100mm
About 6 hours its central temperatures of 700 DEG C of heated at constant temperature of cube can be only achieved 680 DEG C；
(5) safeguard and repair simple, disease seldom occur, maintenance is kept a public place clean simplicity, jewel hole bar planting occurs after disease with fast hard
Early strength concrete can fast and high quality reparation.
So as to which, the utility model is the overlay high-performance cement concrete layer on old asphalt pavement, or by asphalt surface course milling
Replaced after plane using high-performance cement concrete layer, i.e., from high-performance water cement concrete as surface material to meet road surface
Structural strength calls, while by setting vertical recess for example to drill or one when grooving makes high-performance cement concrete speading
Point hole or groove are poured into, to improve cohering for bituminous paving and high-performance cement concrete layer, ensure that high-performance cement mixes
Solidifying soil layer is integrated into a whole with bituminous paving, and high-performance water cement concrete used possesses splendid impervious, freeze thawing resistance, resistance to
The performances such as burn into high temperature resistant, resistant abrasion.
Therefore, the utility model provides a kind of old asphalt pavement overlay or asphalt surface course rebuilds the permanent compound of reinforcement
Formula pavement structure, the old asphalt pavement that especially a kind of bearing capacity is poor, structural damage is more serious overlays or asphalt surface course turns over
Build the permanent composite pavement structure of reinforcement.It is using overlaying high-performance cement concrete layer as surface layer or by high-performance
Cement concrete layer replaces a kind of Maintenanice techngue of bitumin pavement of protobitumen surface layer, by the good of high-performance water cement concrete
Stress dispersion capacity, can be straight after former pavement damage critical regions are carried out with injecting treatment and improves pavement structural strength uniformity
The high-performance water cement concrete that paves is connect, construction is environmentally friendly, convenient, and composite pavement structure also improves the long-term use of road
Energy.
Permanent composite pavement structure good integrity of the present utility model for old asphalt pavement transformation, road surface carrying
Power is high, is adapted to the maintenance and renovation of road Lack of support and the serious old asphalt pavement of road surface breakage, and site operation is quickly just
Victory, structure durability are lasting.
In summary, the permanent composite pavement structure structure of the present utility model for old asphalt pavement transformation is steady
It is fixed, excellent performance, it is hardly damaged, service life length is ingenious in design, and construction environmental protection, convenient, cost is low, suitable for large-scale promotion
Using.
In this description, the utility model is described with reference to its specific embodiment.But it is clear that still can be with
Various modification can be adapted and conversion is without departing from spirit and scope of the present utility model.Therefore, specification is considered as illustrative
And it is nonrestrictive.
Claims (10)
1. a kind of permanent composite pavement structure for old asphalt pavement transformation, it is characterised in that wrap successively from top to bottom
High-performance cement concrete layer, asphalt surface course, basic unit, underlayment and roadbed are included, the high-performance cement concrete layer is installed in
On the asphalt surface course, the asphalt surface course is installed in the basic unit, and the basic unit is installed on the underlayment, the bottom
Basic unit is installed on the roadbed, and the described permanent composite pavement structure for being used for old asphalt pavement transformation also includes vertical
Recess, the vertical recess run through the asphalt surface course and the basic unit, and the high-performance cement concrete column is filled in described
Connect in vertical recess and respectively the high-performance cement concrete layer and the underlayment.
2. a kind of permanent composite pavement structure for old asphalt pavement transformation, it is characterised in that wrap successively from top to bottom
High-performance cement concrete layer, basic unit, underlayment and roadbed are included, the high-performance cement concrete layer is installed in the basic unit
On, the basic unit is installed on the underlayment, and the underlayment is installed on the roadbed, and described is used for old asphalt pavement
The permanent composite pavement structure of transformation also includes vertical recess, and the vertical recess runs through the basic unit, the high-performance
Cement and concrete is filled in the vertical recess and connects the high-performance cement concrete layer and the underlayment respectively.
3. the permanent composite pavement structure for being used for old asphalt pavement transformation according to claim 1 or claim 2,
Characterized in that, the high-performance cement concrete column and the high-performance cement concrete layer are integrally formed.
4. the permanent composite pavement structure for being used for old asphalt pavement transformation according to claim 1 or claim 2,
Characterized in that, the vertical recess is selected from least one of vertical shrinkage pool and vertical groove.
5. the permanent composite pavement structure according to claim 4 for old asphalt pavement transformation, it is characterised in that
On four angles of the rhombus that the center of circle of four adjacent vertical shrinkage pools is 90 ° positioned at square or each side angle.
6. the permanent composite pavement structure according to claim 4 for old asphalt pavement transformation, it is characterised in that
The aperture of the vertical shrinkage pool be 150mm~250mm, between two vertically shrinkage pools at intervals of 1m~2m；It is or described
The width of vertical groove is 100mm~200mm, and the spacing between two vertical grooves is 3m~5m.
7. the permanent composite pavement structure for being used for old asphalt pavement transformation according to claim 1 or claim 2,
Characterized in that, minimum range >=3 times high the property at the vertical edge of the recess to the high-performance cement concrete layer
Can the thickness of cement concrete layer and the thickness of≤15 times of high-performance cement concrete layers.
8. the permanent composite pavement structure for being used for old asphalt pavement transformation according to claim 1 or claim 2,
Characterized in that, the thickness of the high-performance cement concrete layer is 8cm~15cm.
9. the permanent composite pavement structure for being used for old asphalt pavement transformation according to claim 1 or claim 2,
Characterized in that, the described permanent composite pavement structure for being used for old asphalt pavement transformation also includes high-performance cement coagulation
Native intensive aspect, the high-performance water cement concrete intensive aspect are plugged in the asphalt surface course and connect the high-performance cement and mix
Solidifying soil layer.
10. the permanent composite pavement structure according to claim 2 for old asphalt pavement transformation, its feature exists
In the described permanent composite pavement structure for being used for old asphalt pavement transformation also includes high-performance water cement concrete and strengthened
Body, the high-performance water cement concrete intensive aspect are plugged in the basic unit and connect the high-performance cement concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720897234.XU CN207003171U (en) | 2017-07-24 | 2017-07-24 | Permanent composite pavement structure for old asphalt pavement transformation |
Applications Claiming Priority (1)
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| CN107165017A (en) * | 2017-07-24 | 2017-09-15 | 上海市市政规划设计研究院 | The permanent composite pavement structure transformed for old asphalt pavement |
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Effective date of registration: 20190221 Address after: Room 201, Building 609, Jianguo West Road, Xuhui District, Shanghai 200030 Patentee after: Shanghai municipal planning and Design Research Institute Co., Ltd. Address before: 200030 No. 609 Jianguo West Road, Xuhui District, Shanghai Patentee before: Shanghai Municipal Planning & Design Research Institute |