CN206457683U - Suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region - Google Patents
Suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region Download PDFInfo
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- CN206457683U CN206457683U CN201720065563.8U CN201720065563U CN206457683U CN 206457683 U CN206457683 U CN 206457683U CN 201720065563 U CN201720065563 U CN 201720065563U CN 206457683 U CN206457683 U CN 206457683U
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Abstract
The utility model is related to the asphalt pavement structure suitable for Qinghai-xizang Plateau Region.Suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region, include bed course, semi-rigid type base, permeable layers, SBR lowest level by emulsion pitch, cutting optimal, adhesion coating and upper layer successively from bottom to up.
Description
Technical field
The utility model belongs to road project field, is related to a kind of asphalt pavement structure, and in particular to suitable for green grass or young crops
Hide the asphalt pavement structure of highlands.
Background technology
More scientific and reasonable highway pavement how is designed, the performance and durability on road surface is improved constantly, is always
The major subjects of pavement technique research.Although there have been a set of more perfect Pavement Structure Design and construction technology in China at present
Specification instructs Pavement Design, but this is the Pavement Design drawn and construct one on the basis of theory analysis and limited summary of experience
As principle.Adaptation different regions weather, soil property, the hydrology and material condition are designed, and specific road section traffic volume load can be met
It is required that road surface, still there are a series of research work to do.
Qinghai-xizang Plateau Region highway construction is quickly grown in past ten years, and road surface total quality is significantly increased, by
In generally employing, intensity is high and the preferable inorganic stabilizers rigid of water stability, the lime of substantially eliminating over
The soil matrix layer road surface common spring melts the diseases such as frost boiling, deformation, and Road surface quality and service life are greatly improved, basically formed
Pavement technique present situation based on Semi-rigid Pavement of Asphalt, supplemented by cement concrete pavement.But, Qinghai-Tibet Platean
Local climate arid is cold, and height above sea level is higher, adds the conditions such as special landform, geology so that during this area's constructing road
Also the engineering problem being much difficult to resolve is occurred in that.For example：Arid and cold region high-grade highway construction and its endurance issues；Plateau
Strong ultraviolet radiation environment is got down the highway the problem of aging of asphalt surface course；The problem of being built the road in Permafrost Area with road maintaining hardly possible, this
It is also the global problem that Plateau Permafrost Area By Using is built the road, conserved；In West Qinghai-xizang Plateau area and Salt Lake Area, heavily salted
The problem of high-grade highway is built in soil area etc..Qinghai-xizang Plateau Region suffers from a problem that in pavement technique practice and is, no
The actual life on few road surface does not reach design life and occurs as soon as early damage.To ensure that Qinghai-xizang Plateau Region highway is handed over
Lead to greatly developing for construction, it is necessary to systematically solve the above problems, it is preferably Regional Economic Development service to make highway transportation, and
Make bigger contribution.
Utility model content
Utility model purpose：It is new that the problem of the utility model exists for above-mentioned prior art makes improvement, i.e. this practicality
First purpose of type is to disclose the asphalt pavement structure suitable for Qinghai-xizang Plateau Region, to solve prior art presence
The problems such as Structure Dynamics In The Qinghai-tibet Region road surface early disease is serious, service life is short, poor durability, needs are frequently conserved.It is of the present utility model
Second purpose is to disclose a kind of construction method of the asphalt pavement structure suitable for Qinghai-xizang Plateau Region.
Technical scheme：Suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region, include bed course successively from bottom to up, semi-rigid
Basic unit, permeable layers, SBR lowest level by emulsion pitch, cutting optimal, adhesion coating and upper layer.
Further, the bed course is natural sand gravel bed, and the thickness of bed course is 30~50cm.
Further, the semi-rigid type base includes upper basic unit and underlayment,
Upper basic unit is lower shrinkage super-early strength cement stabilization gravel layer,
Underlayment is cement Stability Gravel layer,
The gradation types of upper basic unit and underlayment are dense structure of skeleton,
The thickness of the underlayment is 16~20cm,
The thickness of the upper basic unit is 16~20cm.
Further, the permeable layers are SBR modified emulsifying asphalts layer, and its thickness is 0.5~1cm.
Further, the SBR lowest level by emulsion pitch is screening seal coat, and the thickness of SBR lowest level by emulsion pitch is
1cm。
Further, the thickness of the cutting optimal is 8~10cm.
Further, the thickness of the upper layer is 4~6cm.
A kind of construction method of asphalt pavement structure suitable for Qinghai-xizang Plateau Region, comprises the following steps：
(1), tamp, flatten roadbed；
(2), the making bed course on roadbed, and tamp, flatten, the thickness of bed course is 30~50cm；
(3), the making cement Stability Gravel layer on the smooth bed course that step (2) is obtained, and roller-compaction, cement stabilizing
The thickness of sandy gravel stratum is 16~20cm；
(4), after the intensity of making cement Stability Gravel layer reaches Specification Design value, smooth making lower shrinkage super hardening
Cement stabilized macadam layer, and roller-compaction, the thickness of lower shrinkage super-early strength cement stabilization gravel layer is 16~20cm；
(5), after the intensity of lower shrinkage super-early strength cement stabilization gravel layer reaches Specification Design value, it would be desirable to dispense permeable layers
Oil circuit section is cleaned up, and kerbstone and manual construction thing film or colour bar cloth are covered, then with pitch truck spreader low
Shrink and SBR modified emulsifying asphalts layer is dispensed on super-early strength cement stabilization gravel layer, consumption is not less than 1.4L/m2；
(6) one layer of SBR modified emulsifying asphalt first, is sprayed with pitch truck spreader in permeable layers, paver bits are spread immediately, and closely follow
And roll obtaining SBR lowest level by emulsion pitch, wherein：
The particle diameter for dispensing aggregate chips is not more than 5mm, and the spreading amount of aggregate chips is 6m3/1000m2, the thickness of sealing is 1cm；
(7) after, SBR lowest level by emulsion pitch is constructed 1~2 day, with paver below SBR lowest level by emulsion pitch makings
Layer asphalt, and roller-compaction formation cutting optimal, the thickness of cutting optimal is 8~10cm；
(8) after, cutting optimal is cleaned up, PC-3 type emulsified asphalts sticking layer oil formation adhesion coating is sprayed with pitch sprinkling car,
Wherein：
The spread quantity of PC-3 type emulsified asphalt sticking layer oils is controlled in 0.3~0.5kg/m2, distribution vehicle is with 8~10km/h speed
Degree remains a constant speed traveling, pitch sprinkling car spray less than place using sprinkling spreading by hand；
(9) after, adhesion coating is constructed 1~2 day, with paver on adhesion coating making upper layer asphalt, and roller-compaction
Upper layer is formed, wherein：
Upper layer asphalt is AC-13 mineral fibres asphalt layer, and pitch is 90# pitches or 110# pitches,
Mineral fibres selects Miber I type mineral composition fibers, and coarse aggregate, fine aggregate and miberal powder the key technical indexes meet specification highway
Asphalt Pavement Construction Technique specification (JTG F40-2004) requirement, bitumen aggregate ratio scope is 4.5~6%, and fibers content is mixed for pitch
The 0.4~0.6% of material quality is closed, the thickness of upper layer is 4~6cm.
Beneficial effect：The disclosed asphalt pavement structure suitable for Qinghai-xizang Plateau Region of the utility model has following beneficial
Effect：
The asphalt pavement structural layer that the utility model is provided, it includes bed course, the semi-rigid base set gradually from bottom to up
Layer, permeable layers, modified emulsifying asphalt Sub-sealing Course, cutting optimal, adhesion coating and upper layer, are specially " natural soft-clay bed course+cement stabilizing sand
Basic unit+permeable layers+SBR modified emulsifying asphalt Sub-sealing Courses+OASM-25 is opened on gravel underlayment+lower shrinkage super-early strength cement stabilization gravel
Level match somebody with somebody cracking resistance bituminous concrete moxture cutting optimal+adhesion coating+AC-13 mineral fibres asphalts upper layer " laying structure class
Type, wherein：
The MiberI fiber types used in AC-13 mineral fibres asphalts are a kind of tencel, its physics, mechanics
Characteristic good, can be effectively improved the pavement performance of asphalt mastic, when fiber consumption where appropriate, fiber can improve pitch mixing
The crooked deformability and bending tensile strength of material, can effectively improve the pavement performance of asphalt, realize it in pitch
Application on pavement engineering, can not only make full use of the Dominant Mineral Resources of locality, and to improving the use of bituminous paving
Quality, promotion highway construction etc. have important practical significance and use value；
OASM-25 open gradation cracking resistance bituminous concrete moxture cutting optimals, its grading limit design is in comprehensive domestic external-open
On the basis of level is matched somebody with somebody, propose that the level of Preliminary design matches somebody with somebody (OASM-25) scope, and the further amendment of progress is drawn so that surface layer
Low-temperature cracking-resistance, high-temperature stability, Reflection Cracking performance, mechanical property and the durability of asphalt are improved；
In lower shrinkage super-early strength cement stabilization gravel layer, additive (SES-I type super-early strength cements stabilized base additive
(this patent abbreviation additive), character is pale yellow powder, its main mineralogical composition be calcium silicates, calcium sulphoaluminate, calcium aluminate,
In addition with portion of monocrystalline body) incorporation can reduce first flush amount, reduce scour rate, road surface wash away phenomenon hair can be postponed
The raw time, purt is delayed to starch phenomenon, and the early strength formation time can shift to an earlier date significantly, reduce conditioned time, using water wisely has
Beneficial to Arid-cold regin constructing operation, so as to improve the anti-shrink and water stability of basic unit；
Other basic unit uses framework dense structure, and its optimum moisture content is less than suspension compact structure, other items
Can be good, and intensity is higher, resist drying shrinkage good, low temperature and good, health water is significantly showed under cooling conditions
Moderate, execution conditions are good, and compared with suitable Structure Dynamics In The Qinghai-tibet Region drought and water shortage, the morning and evening temperature difference is big, rate of temperature fall is fast, the low temperature continuous time is long
Environmental quality Arid-cold regin water shortage construction property；
The match ratio grading limit of compound in basic unit and surface layer structure layer, is the base in comprehensive domestic and international related data
On plinth, it is considered to the conclusion drawn after the requirement of Structure Dynamics In The Qinghai-tibet Region correlation properties through verification experimental verification.
Brief description of the drawings
Fig. 1 is the schematic diagram of the disclosed asphalt pavement structure suitable for Qinghai-xizang Plateau Region of the utility model；
Wherein：
1- bed course 2- semi-rigid type bases
3- permeable layers 4-SBR lowest level by emulsion pitch
5- cutting optimal 6- adhesion coatings
7- upper layers
Basic unit on 21- underlayments 22-
Embodiment：
Embodiment of the present utility model is described in detail below.
Specific embodiment 1
As shown in Figure 1, it is adaptable to the asphalt pavement structure of Qinghai-xizang Plateau Region, bed course 1, half have been included successively just from bottom to up
Property basic unit 2, permeable layers 3, SBR lowest level by emulsion pitch 4, cutting optimal 5, adhesion coating 6 and upper layer 7.
Further, bed course 1 is natural sand gravel bed, and the thickness of bed course 1 is 30cm.
Further, semi-rigid type base 2 includes upper basic unit 22 and underlayment 21,
Upper basic unit 22 is lower shrinkage super-early strength cement stabilization gravel layer,
Underlayment 21 is cement Stability Gravel layer,
The gradation types of upper basic unit 22 and underlayment 21 are dense structure of skeleton,
The thickness of underlayment 21 is 16cm,
The thickness of upper basic unit 22 is 16cm.
Further, permeable layers 3 are SBR modified emulsifying asphalts layer, and its thickness is 0.5cm.
Further, SBR lowest level by emulsion pitch 4 is screening seal coat, and the thickness of SBR lowest level by emulsion pitch is 1cm.
Further, the thickness of cutting optimal 5 is 8cm.
Further, the thickness of upper layer 7 is 4cm.
A kind of construction method of asphalt pavement structure suitable for Qinghai-xizang Plateau Region, comprises the following steps：
(1), tamp, flatten roadbed；
(2), the making bed course on roadbed, and tamp, flatten, the thickness of bed course is 30cm；
(3), the making cement Stability Gravel layer on the smooth bed course that step (2) is obtained, and roller-compaction, cement stabilizing
The thickness of sandy gravel stratum is 16cm；
(4), after the intensity of making cement Stability Gravel layer reaches Specification Design value, smooth making lower shrinkage super hardening
Cement stabilized macadam layer, and roller-compaction, the thickness of lower shrinkage super-early strength cement stabilization gravel layer is 16cm；
(5), after the intensity of lower shrinkage super-early strength cement stabilization gravel layer reaches Specification Design value, it would be desirable to dispense permeable layers
Oil circuit section is cleaned up, and kerbstone and manual construction thing film or colour bar cloth are covered, then with pitch truck spreader low
Shrink and SBR modified emulsifying asphalts layer is dispensed on super-early strength cement stabilization gravel layer, consumption is not less than 1.4L/m2；
(6) one layer of SBR modified emulsifying asphalt first, is sprayed with pitch truck spreader in permeable layers, paver bits are spread immediately, and closely follow
And roll obtaining SBR lowest level by emulsion pitch, wherein：
The particle diameter for dispensing aggregate chips is not more than 5mm, and the spreading amount of aggregate chips is 6m3/1000m2, the thickness of sealing is 1cm；
(7) after, SBR lowest level by emulsion pitch is constructed 1 day, with paver in SBR lowest level by emulsion pitch making cutting optimals
Asphalt, and roller-compaction formation cutting optimal, the thickness of cutting optimal is 8cm；
(8) after, cutting optimal is cleaned up, PC-3 type emulsified asphalts sticking layer oil formation adhesion coating is sprayed with pitch sprinkling car,
Wherein：
The spread quantity of PC-3 type emulsified asphalt sticking layer oils is controlled in 0.3kg/m2, distribution vehicle keeps even with 8km/h speed
Speed traveling, pitch sprinkling car spray less than place using by hand sprinkling dispense；
(9) after, adhesion coating is constructed 1 day, with paver on adhesion coating making upper layer asphalt, and roller-compaction formed
Upper layer, wherein：
Upper layer asphalt is AC-13 mineral fibres asphalt layer, and pitch is 90# pitches, mineral fibres choosing
With Miber I type mineral composition fibers, coarse aggregate, fine aggregate and miberal powder the key technical indexes meet specification asphalt highway and applied
Work technical specification (JTG F40-2004) requirement, bitumen aggregate ratio scope is 4.5%, and fibers content is quality of asphalt mixtures
0.4%, the thickness of upper layer is 4cm.
Specific embodiment 2
Suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region, include bed course 1, semi-rigid type base 2, thoroughly successively from bottom to up
Layer 3, SBR lowest level by emulsion pitch 4, cutting optimal 5, adhesion coating 6 and upper layer 7.
Further, bed course 1 is natural sand gravel bed, and the thickness of bed course 1 is 50cm.
Further, semi-rigid type base 2 includes upper basic unit 22 and underlayment 21,
Upper basic unit 22 is lower shrinkage super-early strength cement stabilization gravel layer,
Underlayment 21 is cement Stability Gravel layer,
The gradation types of upper basic unit 22 and underlayment 21 are dense structure of skeleton,
The thickness of underlayment 21 is 20cm,
The thickness of upper basic unit 22 is 20cm.
Further, permeable layers 3 are SBR modified emulsifying asphalts layer, and its thickness is 1cm.
Further, SBR lowest level by emulsion pitch 4 is screening seal coat, and the thickness of SBR lowest level by emulsion pitch is 1cm.
Further, the thickness of cutting optimal 5 is 10cm.
Further, the thickness of upper layer 7 is 6cm.
A kind of construction method of asphalt pavement structure suitable for Qinghai-xizang Plateau Region, comprises the following steps：
(1), tamp, flatten roadbed；
(2), the making bed course on roadbed, and tamp, flatten, the thickness of bed course is 50cm；
(3), the making cement Stability Gravel layer on the smooth bed course that step (2) is obtained, and roller-compaction, cement stabilizing
The thickness of sandy gravel stratum is 20cm；
(4), after the intensity of making cement Stability Gravel layer reaches Specification Design value, smooth making lower shrinkage super hardening
Cement stabilized macadam layer, and roller-compaction, the thickness of lower shrinkage super-early strength cement stabilization gravel layer is 20cm；
(5), after the intensity of lower shrinkage super-early strength cement stabilization gravel layer reaches Specification Design value, it would be desirable to dispense permeable layers
Oil circuit section is cleaned up, and kerbstone and manual construction thing film or colour bar cloth are covered, then with pitch truck spreader low
Shrink and SBR modified emulsifying asphalts layer is dispensed on super-early strength cement stabilization gravel layer, consumption is not less than 1.4L/m2；
(6) one layer of SBR modified emulsifying asphalt first, is sprayed with pitch truck spreader in permeable layers, paver bits are spread immediately, and closely follow
And roll obtaining SBR lowest level by emulsion pitch, wherein：
The particle diameter for dispensing aggregate chips is not more than 5mm, and the spreading amount of aggregate chips is 6m3/1000m2, the thickness of sealing is 1cm；
(7) after, SBR lowest level by emulsion pitch is constructed 2 days, with paver in SBR lowest level by emulsion pitch making cutting optimals
Asphalt, and roller-compaction formation cutting optimal, the thickness of cutting optimal is 10cm；
(8) after, cutting optimal is cleaned up, PC-3 type emulsified asphalts sticking layer oil formation adhesion coating is sprayed with pitch sprinkling car,
Wherein：
The spread quantity of PC-3 type emulsified asphalt sticking layer oils is controlled in 0.5kg/m2, distribution vehicle keeps even with 10km/h speed
Speed traveling, pitch sprinkling car spray less than place using by hand sprinkling dispense；
(9) after, adhesion coating is constructed 2 days, with paver on adhesion coating making upper layer asphalt, and roller-compaction formed
Upper layer, wherein：
Upper layer asphalt is AC-13 mineral fibres asphalt layer, and pitch is 110# pitches, mineral fibres choosing
With Miber I type mineral composition fibers, coarse aggregate, fine aggregate and miberal powder the key technical indexes meet specification asphalt highway and applied
Work technical specification (JTG F40-2004) requirement, bitumen aggregate ratio scope is 6%, and fibers content is the 0.6% of quality of asphalt mixtures,
The thickness of upper layer is 6cm.
Specific embodiment 3
Suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region, include bed course 1, semi-rigid type base 2, thoroughly successively from bottom to up
Layer 3, SBR lowest level by emulsion pitch 4, cutting optimal 5, adhesion coating 6 and upper layer 7.
Further, bed course 1 is natural sand gravel bed, and the thickness of bed course 1 is 40cm.
Further, semi-rigid type base 2 includes upper basic unit 22 and underlayment 21,
Upper basic unit 22 is lower shrinkage super-early strength cement stabilization gravel layer,
Underlayment 21 is cement Stability Gravel layer,
The gradation types of upper basic unit 22 and underlayment 21 are dense structure of skeleton,
The thickness of underlayment 21 is 18cm,
The thickness of upper basic unit 22 is 18cm.
Further, permeable layers 3 are SBR modified emulsifying asphalts layer, and its thickness is 0.75cm.
Further, SBR lowest level by emulsion pitch 4 is screening seal coat, and the thickness of SBR lowest level by emulsion pitch is 1cm.
Further, the thickness of cutting optimal 5 is 9cm.
Further, the thickness of upper layer 7 is 5cm.
A kind of construction method of asphalt pavement structure suitable for Qinghai-xizang Plateau Region, comprises the following steps：
(1), tamp, flatten roadbed；
(2), the making bed course on roadbed, and tamp, flatten, the thickness of bed course is 40cm；
(3), the making cement Stability Gravel layer on the smooth bed course that step (2) is obtained, and roller-compaction, cement stabilizing
The thickness of sandy gravel stratum is 18cm；
(4), after the intensity of making cement Stability Gravel layer reaches Specification Design value, smooth making lower shrinkage super hardening
Cement stabilized macadam layer, and roller-compaction, the thickness of lower shrinkage super-early strength cement stabilization gravel layer is 18cm；
(5), after the intensity of lower shrinkage super-early strength cement stabilization gravel layer reaches Specification Design value, it would be desirable to dispense permeable layers
Oil circuit section is cleaned up, and kerbstone and manual construction thing film or colour bar cloth are covered, then with pitch truck spreader low
Shrink and SBR modified emulsifying asphalts layer is dispensed on super-early strength cement stabilization gravel layer, consumption is not less than 1.4L/m2；
(6) one layer of SBR modified emulsifying asphalt first, is sprayed with pitch truck spreader in permeable layers, paver bits are spread immediately, and closely follow
And roll obtaining SBR lowest level by emulsion pitch, wherein：
The particle diameter for dispensing aggregate chips is not more than 5mm, and the spreading amount of aggregate chips is 6m3/1000m2, the thickness of sealing is 1cm；
(7) after, SBR lowest level by emulsion pitch is constructed 1 day, with paver in SBR lowest level by emulsion pitch making cutting optimals
Asphalt, and roller-compaction formation cutting optimal, the thickness of cutting optimal is 9cm；
(8) after, cutting optimal is cleaned up, PC-3 type emulsified asphalts sticking layer oil formation adhesion coating is sprayed with pitch sprinkling car,
Wherein：
The spread quantity of PC-3 type emulsified asphalt sticking layer oils is controlled in 0.4kg/m2, distribution vehicle keeps even with 9km/h speed
Speed traveling, pitch sprinkling car spray less than place using by hand sprinkling dispense；
(9) after, adhesion coating is constructed 1 day, with paver on adhesion coating making upper layer asphalt, and roller-compaction formed
Upper layer, wherein：
Upper layer asphalt is AC-13 mineral fibres asphalt layer, and pitch is 90# pitches, mineral fibres choosing
With Miber I type mineral composition fibers, coarse aggregate, fine aggregate and miberal powder the key technical indexes meet specification asphalt highway and applied
Work technical specification (JTG F40-2004) requirement, bitumen aggregate ratio scope is 5%, and fibers content is the 0.5% of quality of asphalt mixtures,
The thickness of upper layer is 5cm.
Embodiment of the present utility model is elaborated above.But the utility model is not limited to above-mentioned implementation
Mode, in the knowledge that art those of ordinary skill possesses, can also not depart from the utility model ancestor
Made a variety of changes on the premise of purport.
Claims (7)
1. suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region, it is characterised in that include bed course, semi-rigid successively from bottom to up
Basic unit, permeable layers, SBR lowest level by emulsion pitch, cutting optimal, adhesion coating and upper layer.
2. the asphalt pavement structure according to claim 1 suitable for Qinghai-xizang Plateau Region, it is characterised in that the bed course
For natural sand gravel bed, the thickness of bed course is 30~50cm.
3. the asphalt pavement structure according to claim 1 suitable for Qinghai-xizang Plateau Region, it is characterised in that described half just
Property basic unit include upper basic unit and underlayment,
Upper basic unit is lower shrinkage super-early strength cement stabilization gravel layer,
Underlayment is cement Stability Gravel layer,
The gradation types of upper basic unit and underlayment are dense structure of skeleton,
The thickness of the underlayment is 16~20cm,
The thickness of the upper basic unit is 16~20cm.
4. the asphalt pavement structure according to claim 1 suitable for Qinghai-xizang Plateau Region, it is characterised in that the permeable layers
For SBR modified emulsifying asphalts layer, its thickness is 0.5~1cm.
5. the asphalt pavement structure according to claim 1 suitable for Qinghai-xizang Plateau Region, it is characterised in that the SBR
Lowest level by emulsion pitch is screening seal coat, and the thickness of SBR lowest level by emulsion pitch is 1cm.
6. the asphalt pavement structure according to claim 1 suitable for Qinghai-xizang Plateau Region, it is characterised in that below described
The thickness of layer is 8~10cm.
7. the asphalt pavement structure according to claim 1 suitable for Qinghai-xizang Plateau Region, it is characterised in that above described
The thickness of layer is 4~6cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720065563.8U CN206457683U (en) | 2017-01-18 | 2017-01-18 | Suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region |
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| CN201720065563.8U CN206457683U (en) | 2017-01-18 | 2017-01-18 | Suitable for the asphalt pavement structure of Qinghai-xizang Plateau Region |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868972A (en) * | 2017-01-18 | 2017-06-20 | 青海省交通科学研究院 | A kind of asphalt pavement structure and its construction method suitable for Qinghai-xizang Plateau Region |
-
2017
- 2017-01-18 CN CN201720065563.8U patent/CN206457683U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868972A (en) * | 2017-01-18 | 2017-06-20 | 青海省交通科学研究院 | A kind of asphalt pavement structure and its construction method suitable for Qinghai-xizang Plateau Region |
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Granted publication date: 20170901 Termination date: 20190118 |