CN107165017A - The permanent composite pavement structure transformed for old asphalt pavement - Google Patents
The permanent composite pavement structure transformed for old asphalt pavement Download PDFInfo
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- CN107165017A CN107165017A CN201710604957.0A CN201710604957A CN107165017A CN 107165017 A CN107165017 A CN 107165017A CN 201710604957 A CN201710604957 A CN 201710604957A CN 107165017 A CN107165017 A CN 107165017A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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Abstract
The invention provides a kind of permanent composite pavement structure transformed for old asphalt pavement, 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.The present invention's is used for the permanent composite pavement structure Stability Analysis of Structures that old asphalt pavement is transformed, and excellent performance is hardly damaged, and service life is long, ingenious in design, construction environmental protection, and convenient, cost is low, suitable for large-scale promotion application.
Description
Technical field
The present invention relates to road pavement technical field of structures, more particularly, to asphalt pavement technique field, particularly relate to
A kind of permanent composite pavement structure transformed for old asphalt pavement.
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, comed one after another the problem of new, national economy high speed development and the volume of traffic that brings are increased rapidly, vehicle is large-scale
Change, overload serious, vehicle channelization etc., bituminous paving is 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, occurs in that structural damage.
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
Stable, excellent performance is hardly damaged, and service life is long, construction environmental protection, convenient.
The content of the invention
In order to overcome above-mentioned shortcoming of the prior art, it is used for Bituminous concrete surface road it is an object of the present invention to provide one kind
The permanent composite pavement structure of face transformation, its Stability Analysis of Structures, excellent performance is hardly damaged, and service life is long, suitable for big rule
Mould popularization and application.
Another object of the present invention is to provide a kind of permanent composite pavement structure transformed for old asphalt pavement,
Its is ingenious in design, construction environmental protection, and convenient, cost is low, suitable for large-scale promotion application.
To achieve the above objectives, it is used for the permanent of old asphalt pavement transformation there is provided a kind of in the first aspect of the present invention
Property composite pavement structure, be characterized in, from top to bottom successively include high-performance cement concrete layer, asphalt surface course, basic unit, bottom
Basic unit and roadbed, the high-performance cement concrete layer are installed on the asphalt surface course, and the asphalt surface course is installed in described
In basic unit, the basic unit is installed on the underlayment, and the underlayment is installed on the roadbed, and described is used for Bituminous concrete surface
The permanent composite pavement structure of Pavement Improvement also includes vertical recess, and the vertical recess runs through the asphalt surface course and institute
Basic unit is stated, the high-performance cement concrete column is filled in the vertical recess and connects the high-performance cement coagulation respectively
Soil 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 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 is 10.0 ± 2.0cm；(5) 2h~4h moisture-keeping maintaining need to be carried out；(6) seepage-resistant grade is more than P20, with good
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 be determined 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
It is on 90 ° of four angles of rhombus that the center of circle of vertical shrinkage pool, which is located 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 recess to the edge of the high-performance cement concrete layer can determine as needed,
It is preferred that minimum range >=3 times the high-performance water of the vertical recess to the edge of the high-performance cement concrete layer
The thickness of cement concrete layer and the thickness of≤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 be determined as needed, it is preferred that the high-performance cement is mixed
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 is plugged
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, the underlayment is installed on the roadbed, above-mentioned
The preparation method for the permanent composite pavement structure transformed for old asphalt pavement comprises the following steps：
(1) vertical recess is set on the old asphalt pavement, and the vertical recess runs 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 formation high-performance cement concrete column,
The remaining high-performance water cement concrete formation 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)
Not enough place carries out injecting treatment, and the disease such as pit and crack to the asphalt surface course of old asphalt pavement is repaired.It is used
Slurry can be high-performance water cement concrete.
In the step (2), the time of moisture-keeping maintaining can extend curing time when being 2h~4h, such as low-temperature construction.
In the second aspect of the present invention, there is provided another permanent composite pavement knot transformed for old asphalt pavement
Structure, is characterized in, includes high-performance cement concrete layer, basic unit, underlayment and roadbed, the high-performance water successively from top to bottom
Cement concrete layer is installed in the basic unit, and the basic unit is installed on the underlayment, and the underlayment is installed in the road
On base, the described permanent composite pavement structure for being used for old asphalt pavement transformation also includes vertical recess, described vertical recessed
The basic unit is run through in portion, and the high-performance cement concrete column is filled in the vertical recess and connects the high-performance respectively
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 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 is limited
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, with 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 be determined 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
It is on 90 ° of four angles of rhombus that the center of circle of vertical shrinkage pool, which is located 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 recess to the edge of the high-performance cement concrete layer can determine as needed,
It is preferred that minimum range >=3 times the high-performance water of the vertical recess to the edge of the high-performance cement concrete layer
The thickness of cement concrete layer and the thickness of≤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 be determined as needed, it is preferred that the high-performance cement is mixed
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 is plugged
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, the underlayment is installed on the roadbed, above-mentioned
The preparation method for the permanent composite pavement structure transformed for old asphalt pavement 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 formation high-performance cement concrete column, the remaining height
Performance cement concrete formation 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 not enough to the basic unit especially intensity is carried out at slip casting
Manage, the disease such as pit and crack to basic unit is repaired.Slurry therewith can be high-performance water cement concrete.
In the step C, the time of moisture-keeping maintaining can extend curing time when being 2h~4h, such as low-temperature construction.
The beneficial effects of the present invention are：
(1) the permanent composite pavement structure for being used for old asphalt pavement transformation of the invention includes height successively from top to bottom
Performance cement concrete layer, asphalt surface course, basic unit, underlayment and roadbed, high-performance cement concrete layer are installed in asphalt surface course
On, 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, base
Layer is installed on underlayment, and underlayment is installed on roadbed, in addition to vertical recess, and vertical recess runs through asphalt surface course and base
Layer, if there is no asphalt surface course, then vertical recess is only through basic unit, and high-performance cement concrete column is filled in vertical recess
And connection high-performance cement concrete layer and underlayment, therefore, its Stability Analysis of Structures, excellent performance are hardly damaged respectively, use the longevity
Life length, suitable for large-scale promotion application.
(2) the permanent composite pavement structure for being used for old asphalt pavement transformation of the invention includes height successively from top to bottom
Performance cement concrete layer, asphalt surface course, basic unit, underlayment and roadbed, high-performance cement concrete layer are installed in asphalt surface course
On, 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, base
Layer is installed on underlayment, and underlayment is installed on roadbed, in addition to vertical recess, and vertical recess runs through asphalt surface course and base
Layer, if there is no asphalt surface course, then vertical recess is only through basic unit, and high-performance cement concrete column is filled in vertical recess
And high-performance cement concrete layer and underlayment are connected respectively, therefore, its is ingenious in design, construction environmental protection, and convenient, cost is low, fits
In large-scale promotion application.
These and other objects, feature and the advantage of the present invention, is obtained by following detailed descriptions, drawings and claims
To fully demonstrate, and it can be achieved by the means specially pointed out in appended claims, device and combinations thereof.
Brief description of the drawings
Fig. 1 is the specific implementation to form the permanent composite pavement structure for being used for old asphalt pavement transformation of the present invention
The main view perspective diagram of vertical shrinkage pool is set during example to old asphalt pavement.
Fig. 2 is the specific implementation to form the permanent composite pavement structure for being used for old asphalt pavement transformation of the present invention
The schematic top plan view of vertical shrinkage pool is set during example to old asphalt pavement.
Fig. 3 is another specific reality to form the permanent composite pavement structure for being used for old asphalt pavement transformation of the present invention
The side view perspective diagram of vertical groove is set when applying to old asphalt pavement.
Fig. 4 is another specific reality to form the permanent composite pavement structure for being used for old asphalt pavement transformation of the present invention
The schematic top plan view of vertical groove is set when applying 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 the technology contents of the present invention, described in detail especially exemplified by following examples.All hundred
Point rate is weight percent, unless otherwise specified.
Raw material used in embodiment 1- embodiments 3 has：
(strength grade is 52.5 grades of portland cement, C to cement3A content is 8% weight, purchased from Anhui Conch Cement
Limited company)；
(Sai Pusen silicon ashes, average grain diameter is 0.1 μm, SiO to silicon ash2Content be 98% weight, activity index is 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)；
(copper facing steel fibre, a diameter of 0.22mm, length is 14mm to steel fibre, and tensile strength is 2200MPa, purchased from Hebei
Square moral silk screen products factory)；
(8525 type water reducers, are a kind of polycarboxylate water-reducer to additive, and water-reducing rate 40% builds work 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, underlayment 3 is installed on roadbed 4, asphalt surface course 1 is wrapped successively from top to bottom
Include superficial layer 11, middle surface layer 12, cutting optimal 13.
The construction method for the permanent composite pavement structure transformed for old asphalt pavement comprises the following steps：A, it will set
The position of the vertical shrinkage pool 5 of meter is marked on old asphalt pavement (namely asphalt surface course 1), the position in the center of circle of each vertical shrinkage pool 5
Put the rhombus distribution that line formation 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 15cm diameters core drilling machine each mark position drill old asphalt pavement, depth to basic unit 2 bottom mark
Height, is referred to shown in Fig. 1 and Fig. 2；C, processing old asphalt pavement surface, carry out slip casting joint filling, milling and cleaning, and 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, 8cm that the uniform high-performance water cement concrete of mix paved on old asphalt pavement using paver are thick
High-performance cement concrete layer forms high-performance cement concrete column and on the surface of asphalt surface course 1 in vertical shrinkage pool 5 simultaneously
Gap in formed high-performance water cement concrete intensive aspect；F, the moisture-keeping maintaining for carrying out 4h, treat that compression strength reaches 40MPa, curved
Tensile strength reaches that 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, underlayment 3 is installed on roadbed 4, asphalt surface course 1 is wrapped successively from top to bottom
Include superficial layer 11, middle surface layer 12, cutting optimal 13.
The construction method for the permanent composite pavement structure transformed for old asphalt pavement comprises the following steps：A, it will set
The position of the vertical groove 6 of meter is marked 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, slotted in the cutting old asphalt pavement formation of each mark position using cutting machine, and require 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, processing old asphalt pavement surface, carry out slip casting and fill out
Seam, milling and cleaning, joint filling slurry therewith can be high-performance water cement concrete；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 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, the moisture-keeping maintaining for carrying out 3h.
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, underlayment 3 is installed on roadbed 4, asphalt surface course 1 is wrapped successively from top to bottom
Include superficial layer 11, middle surface layer 12, cutting optimal 13.
The construction method for the permanent composite pavement structure transformed for old asphalt pavement comprises the following steps：A, milling
15cm asphalt surface course 1；B, the position of the vertical shrinkage pool 5 of design marked in basic unit 2, the position in the center of circle of each vertical shrinkage pool 5
The rhombus distribution that line formation angle is 90 °, the length of side is 159cm, each vertical shrinkage pool 5 to the minimum range of the outer rim of basic unit 2 is
225cm；C, using 25cm diameters core drilling machine each mark position drill basic unit 2, the bottom absolute altitude of depth to basic unit 2；D, processing
The surface of basic unit 2, carries out slip casting joint filling, milling and cleaning, joint filling slurry therewith can be high-performance water cement concrete,；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, progress
2h moisture-keeping maintaining..
The composite pavement structure of the formation of embodiment 1- embodiments 3 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 difficult to destroy by rush of water, when basic unit or roadbed
Reinforced concrete pavement remains to normally 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 length of side 100mm's is vertical
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) maintenance is simple with repairing, and disease seldom occurs, conserves simplicity of keeping a public place clean, and jewel hole bar planting after disease occurs and uses fast hard
Early strength concrete can fast and high quality reparation.
So as to, the present invention is the overlay high-performance cement concrete layer on old asphalt pavement, or by after asphalt surface course milling
Replaced using high-performance cement concrete layer, that is, select high-performance water cement concrete as surface material to meet the structure on road surface
Intensity requirement, while vertical recess for example drills or grooving fills part during high-performance cement concrete speading by setting
Enter hole or groove, to improve cohering for bituminous paving and high-performance cement concrete layer, it is ensured that high-performance water cement concrete
Layer is integrated into a whole with bituminous paving, and high-performance water cement concrete used possesses splendid impervious, freeze thawing resistance, corrosion resistant
The performances such as erosion, high temperature resistant, resistant abrasion.
Therefore, the invention provides the permanent combined type road that reinforcement is rebuild in a kind of overlay of old asphalt pavement or asphalt surface course
Face structure, the old asphalt pavement that especially a kind of bearing capacity is poor, structural damage is more serious is overlayed or asphalt surface course rebuilds benefit
Strong permanent composite pavement structure.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 stress of high-performance water cement concrete
Former pavement damage critical regions can carried out directly spreading out after injecting treatment improves pavement structural strength uniformity by diffusivity
High-performance water cement concrete is spread, it is environmentally friendly, convenient to construct, and composite pavement structure also improves the Long-Term Properties of road.
The present invention's is used for the permanent composite pavement structure good integrity that old asphalt pavement is transformed, road surface bearing capacity
Height, is adapted to the maintenance and renovation of road Lack of support and the serious old asphalt pavement of road surface breakage, site operation rapid and convenient,
Structure durability is lasting.
In summary, the permanent composite pavement structure Stability Analysis of Structures transformed for old asphalt pavement of the invention, property
Can be excellent, it is hardly damaged, service life is long, ingenious in design, construction environmental protection, convenient, cost is low, suitable for large-scale promotion application.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that can still make
Various modifications and alterations are without departing from the spirit and scope of the present invention.Therefore, specification is considered as illustrative rather than limit
Property processed.
Claims (10)
1. a kind of permanent composite pavement structure transformed for old asphalt pavement, 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 runs 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 transformed for old asphalt pavement, 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. it is used for the permanent composite pavement structure that old asphalt pavement is transformed 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. it is used for the permanent composite pavement structure that old asphalt pavement is transformed 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 transformed for old asphalt pavement, it is characterised in that
It is on 90 ° of four angles of rhombus that the center of circle of four adjacent vertical shrinkage pools, which is located at square or each side angle,.
6. the permanent composite pavement structure according to claim 4 transformed for old asphalt pavement, it is characterised in that
The aperture of the vertical shrinkage pool is at intervals of 1m~2m between 150mm~250mm, two vertical shrinkage pools；Or, it is described
The width of vertical groove is that the spacing between 100mm~200mm, two vertical grooves is 3m~5m.
7. it is used for the permanent composite pavement structure that old asphalt pavement is transformed according to claim 1 or claim 2,
Characterized in that, minimum range >=3 times at the vertical recess to the edge of the high-performance cement concrete layer high property
The thickness and the thickness of≤15 times of high-performance cement concrete layers of energy cement concrete layer.
8. it is used for the permanent composite pavement structure that old asphalt pavement is transformed according to claim 1 or claim 2,
Characterized in that, the thickness of the high-performance cement concrete layer is 8cm~15cm.
9. it is used for the permanent composite pavement structure that old asphalt pavement is transformed 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 is plugged in the asphalt surface course and connects the high-performance cement and mixes
Solidifying soil layer.
10. the permanent composite pavement structure according to claim 2 transformed for old asphalt pavement, 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 is plugged in the basic unit and connects the high-performance cement concrete layer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490971A (en) * | 2018-11-29 | 2019-03-19 | 江苏北极星交通产业集团有限公司 | The detection restorative procedure that composite pavement comes to nothing |
| CN113430890A (en) * | 2021-07-01 | 2021-09-24 | 驻马店市华中公路设计有限公司 | Permanent composite pavement structure for old asphalt pavement reconstruction and construction device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016716A (en) * | 2007-02-14 | 2007-08-15 | 易志坚 | Influent polymer cement concrete pavement structure on asphalt surface course and contracture method |
| CN103526663A (en) * | 2013-10-28 | 2014-01-22 | 三峡大学 | Method for repairing asphalt concrete pavement distresses by utilization of combined-type concrete repaving surfacing |
| CN104047215A (en) * | 2014-05-21 | 2014-09-17 | 西南科技大学 | Method for changing cement concrete pavement into pervious concrete pavement |
| CN203960704U (en) * | 2014-07-15 | 2014-11-26 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of composite base asphalt pavement structure |
| CN104328730A (en) * | 2014-09-26 | 2015-02-04 | 杭州江润科技有限公司 | Construction method for transforming cement concrete pavement with embedded reinforced asphalt layer |
| CN205893847U (en) * | 2016-08-08 | 2017-01-18 | 广东工业大学 | Cement concrete pavement's repair structure |
| CN207003171U (en) * | 2017-07-24 | 2018-02-13 | 上海市市政规划设计研究院 | Permanent composite pavement structure for old asphalt pavement transformation |
-
2017
- 2017-07-24 CN CN201710604957.0A patent/CN107165017A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016716A (en) * | 2007-02-14 | 2007-08-15 | 易志坚 | Influent polymer cement concrete pavement structure on asphalt surface course and contracture method |
| CN103526663A (en) * | 2013-10-28 | 2014-01-22 | 三峡大学 | Method for repairing asphalt concrete pavement distresses by utilization of combined-type concrete repaving surfacing |
| CN104047215A (en) * | 2014-05-21 | 2014-09-17 | 西南科技大学 | Method for changing cement concrete pavement into pervious concrete pavement |
| CN203960704U (en) * | 2014-07-15 | 2014-11-26 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of composite base asphalt pavement structure |
| CN104328730A (en) * | 2014-09-26 | 2015-02-04 | 杭州江润科技有限公司 | Construction method for transforming cement concrete pavement with embedded reinforced asphalt layer |
| CN205893847U (en) * | 2016-08-08 | 2017-01-18 | 广东工业大学 | Cement concrete pavement's repair structure |
| CN207003171U (en) * | 2017-07-24 | 2018-02-13 | 上海市市政规划设计研究院 | Permanent composite pavement structure for old asphalt pavement transformation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490971A (en) * | 2018-11-29 | 2019-03-19 | 江苏北极星交通产业集团有限公司 | The detection restorative procedure that composite pavement comes to nothing |
| CN113430890A (en) * | 2021-07-01 | 2021-09-24 | 驻马店市华中公路设计有限公司 | Permanent composite pavement structure for old asphalt pavement reconstruction and construction device |
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