CN103669144A - Soft soil foundation heavy traffic road subgrade - Google Patents
Soft soil foundation heavy traffic road subgrade Download PDFInfo
- Publication number
- CN103669144A CN103669144A CN201210348742.4A CN201210348742A CN103669144A CN 103669144 A CN103669144 A CN 103669144A CN 201210348742 A CN201210348742 A CN 201210348742A CN 103669144 A CN103669144 A CN 103669144A
- Authority
- CN
- China
- Prior art keywords
- cement
- soil
- lime
- heavy traffic
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Road Paving Structures (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a soft soil foundation heavy traffic road subgrade, which is characterized in that the overall thickness of a subgrade working area is 150cm to 200cm, and is sequentially provided with slag, steel-plastic grids, broken stone, lime soil, cement lime soil and cemented soil. A subgrade processing method under a soft foundation heavy traffic condition is determined according to the depth of the working area, the subgrade within the depth of the working area is processed by sequentially paving the slag, the steel-plastic grids and the broken stone from bottom to top (the thickness of the slag is 40cm to 60cm, the thickness of the steel-plastic grid is 1cm to 3cm, and the thickness of the broken stone is 20cm to 40cm), and then the lime soil which is 20cm to 60cm thick, the cement lime soil which is 20cm to 60cm thick and the cemented oil which is 20cm to 40cm thick are paved. The subgrade has the advantages of high strength, good stability, good duration and the like, and the expense of the road in the full-service-life period can be remarkably reduced. The invention relates to an environment-friendly road design method.
Description
Technical field
The present invention is roadbed technical field in highway construction, is specifically related to a kind of Heavy Traffic road foundation and construction method thereof.
Background technology
District of Shanghai is as national shipping centre and financial center in building, and the effect of communication and logistics shows just day by day.Along with the fast development with highway transportation that improves constantly of economic level, the vehicle in communications and transportation, to development aspect large-scale, heavily loaded, especially forms scale at Heavy Traffics such as turnpike road, harbours day by day.In fact, in other provinces, the whole nation, super-heavy load phenomenon is ubiquity also, and District of Shanghai belongs to Soft Soil Ground And Foundation, and the harm of super-heavy load is larger.
In recent years, international road circle has a noun-heavy traffic receiving much attention, and it refers to that after road is open to traffic, adding up equivalent standard axle substantially exceeds mean level, the phenomenon of Pavement Performance decay extra normal development, and we are referred to as Heavy Traffic.In developed country, Heavy Traffic major embodiment is that shipping is to container, maximization, multiaxis future development; In China, Heavy Traffic common overrun and overload of take vehicle is feature, mainly refers to that on road, vehicle axle weight has surpassed road defined limit value, and the disposable destruction of road pavement is comparatively serious.Here said Heavy Traffic is different with the heavy traffic concept in existing pavement design standard, it is fixed that the latter comes by traffic classification, Main Basis is the standard axle load effect number of times that use initial stage Design Lane passes through every day, refers to the standard axle load effect number of times that use initial stage Design Lane passes through every day and is greater than 1500 times.Supporting Load Pavement research is mainly for Heavy Traffic.Because passenger vehicle and middle-size and small-size lorry road pavement do not cause too large harm, the Heavy Traffic of our indication mainly refers to big-and-middle-sized lorry.
Along with the increase of highway transport volume, the limit value of countries in the world axle load and automobile gross mass limit value all increase, and International Transport Federation brings up to 13KN by the axle load limit value of single shaft two-wheel from 10KN the seventies; Duplex axle load limit value is brought up to 21KN; Train gross mass is brought up to 45KN.The < < overload transport vehicle that China Ministry of Communications promulgates in February, the 2000 also regulation new to some extent to axle for vehicle mounted mass of highway administration regulation > > of travelling: " single shaft single-wheel group mounted mass 6KN; Single shaft two-wheel group mounted mass 10KN; Duplex axle two-wheel group mounted mass 18KN.”
Generally overload and heavy loading due to vehicle, it is more and more obvious that the too early damage on the road surface of building also becomes, the road surface in many areas does not reach design life, at the use initial stage, there is the destructions such as rut, hole groove, cracking, depression, face is shortened application life greatly, Pavement Condition decay is accelerated, and causes larger economic loss to society and transportation department.
The existing pavement design method of China all be take conventional load as foundation, be only applicable to the situation below the heavy 13KN of axle, axle is great when 13KN, current specifications is not yet mentioned, current practice is used for to the roadbed design that overloads, from the peace of engineering structures, can not allow, make engineering design have blindness, become the one of the main reasons that causes many road surfaces early damage.Therefore, be necessary to set up the Design Method for Subgrade that is applicable to super-heavy load road.
Summary of the invention
The object of this invention is to provide a kind of soft foundation Heavy Traffic road foundation, overcome the defect in existing design, the supporting capacity that solves Yin Luji is not enough and cause pavement disease.
In order to realize this purpose, technical scheme of the present invention is as follows: a kind of soft foundation Heavy Traffic road foundation, it is characterized in that roadbed work area gross thickness 150-200cm, be from bottom to top provided with successively the slag blanket of delaying, steel is moulded grid layer, macadam, lime soil layer, cement and lime soil layer, cement soil layer.Each layer thickness is respectively: the slag blanket 40-60cm that delays, steel are moulded grid layer 1-3cm, macadam 20-40cm, lime soil layer 20-60cm, cement and lime soil layer 20-60cm, cement soil layer 20-40cm.
In general, roadbed work area gross thickness 200cm during very heavy traffic (design period internal standard axle carry accumulative total act on number of times and be greater than 2,500 ten thousand times/track or medium-sized or above lorry and motorbus daily traffic volume and be greater than 5000/d track), roadbed work area gross thickness 150-200cm during heavy traffic (design period internal standard axle carry accumulative total act on number of times and be greater than 1,200 ten thousand times/track or medium-sized or above lorry and motorbus daily traffic volume and be greater than 1500/d track).
Another object of the present invention is to provide a kind of soft foundation Heavy Traffic road foundation construction method, overcomes the defect in existing design, and the supporting capacity that solves Yin Luji is not enough and cause pavement disease.
In order to realize this purpose, technical scheme of the present invention is as follows: a kind of soft foundation Heavy Traffic road foundation construction method, after it is characterized in that digging under the clear table of roadbed,, from bottom to top set gradually the slag blanket of delaying, steel is moulded grid layer, macadam, lime soil layer, cement and lime soil layer and cement soil layer.Wherein each layer thickness is respectively: the slag blanket 40-60cm that delays, steel are moulded grid layer 1-3cm, macadam 20-40cm, lime soil layer 20-60cm, cement and lime soil layer 20-60cm, cement soil layer 20-40cm.
Rendzinas, cement lime stabilized soil, cement-soil all should be concentrated employing forced mixer mixing by stirring factory; Cement lime stabilized soil is should be first even by lime, cement mixing, then adds and bury and water stirs, and water content should be than the high 0%-3% of optimum moisture content; Pave and should adopt machinery to pave, the length that at every turn paves is preferably the section of rolling; After completing, should roll in sky.In rendzinas, lime quality percentage composition is 8-12%, and in cement lime stabilized soil, cement quality percentage composition is that 2-4%, lime quality percentage composition are 3-6%, and in cement-soil, cement quality percentage composition is 5-8%.
The present invention is by increasing the roadbed work area degree of depth, improve the intensity of roadbed filling, slag+the steel of delaying of bottom is moulded grid+macadam can play stable, draining, the further effect such as dispersive stress, rendzinas on it, cement lime stabilized soil, soil cement intensity improve successively, further strengthened roadbed, the roadbed support stiffness having solved under the typical road structure of China under the effect of Heavy Traffic lacks the problems such as rigidity transition zone not and between ground, has the advantages such as intensity is high, good stability, good endurance.
The present invention is adjusted into 150-200cm by roadbed work area by the 80cm of (being non-heavy-load road) under standard axle load effect, be soft foundation heavy-load road is adjusted into 150-200cm roadbed by the 80cm roadbed in current specifications, the problem that the degree of depth and actual working state are not inconsistent is defined in the roadbed work area that has solved Heavy Traffic road 80cm in actual measurement.According to the Roadbed Treatment under the soft based heavy-load condition of workspace Depth determination, roadbed in the degree of depth of workspace is taked successively to lay the slag+steel of delaying from bottom to top and is moulded the processing mode of grid+rubble (the thick 40-60cm of being of the slag blanket of delaying, steel is moulded grid bed thickness 1-3cm, rubble bed thickness 20-40cm), on it, do thick cement lime stabilized soil and the thick cement-soil of 20-40cm of rendzinas, 20-60cm of 20-60cm.The roadbed of the present invention's design has the advantages such as intensity is high, good stability, good endurance, significantly reduces road Life Cycle Cost, and properties also all increases and improves.Compare with conventional method, the present invention: the slag+steel of delaying is moulded the effect that grid+rubble plays stable, draining and further disperses roadbed stress, rendzinas on it, cement lime stabilized soil, cement-soil owing to thering is specific proportioning, rigidity improves gradually, (this stress is decay gradually from top to bottom extremely perfectly to bear the stress that corresponding carload causes, just decling phase is identical gradually with the rigidity from top to bottom of the present invention's design), can bear corresponding load on the one hand, also save as much as possible on the other hand construction costs.The present invention is a kind of road design method of environmental protection.
The specific embodiment
Raw material of the present invention is marketable material, specific as follows:
(1) slag of delaying: the rubble after explosion, particle diameter is larger, is native stone mixture, and the stone content that particle diameter is greater than 40mm is greater than 70%, but the maximum particle diameter of stone is not more than 100mm.
(2) steel is moulded grid: by high-tensile steel wires, by high density polyethylene (HDPE), be rolled into high strength tapes, by plane longitude and latitude, meet at right angles, through the geosynthetics of ultrasonic bonding moulding.It is 1-3cm that described steel is moulded grid thickness under 2kPa pressure.Performance indications meet: every linear meter(lin.m.) tensile yield power is not less than 60KN/m; Elongation at yield rate is not more than 3%; During 2% elongation rate, tensile force is not less than 55KN/m.Steel is moulded grid originally as prior art, does not repeat them here.
(3) rubble: be the graded broken stone after fragmentation, screening, its grating should meet the regulation of table 1.
Table 1 macadam gradating
| Screen size/mm | 37.5 | 31.5 | 19.0 | 9.5 | 4.75 | 2.36 | 1.18 | 0.60 | 0.075 |
| By quality percentage/% | 100 | 90-100 | 75-90 | 50-70 | 35-50 | 20-40 | 10-30 | 6-20 | 0-7 |
(4) lime: be the new slaked lime of 1-3 level, its technical indicator should meet the regulation of table 2.
Table 2 lime technology index
(5) cement: 42.5 grades of portland cements.
Raw material of the present invention forms (thickness): the slag 40-60cm that delays, steel are moulded grid 1-3cm, rubble 20-40cm, rendzinas 20-60cm, cement lime stabilized soil 20-60cm, cement-soil 20-40cm.。
Preparation method of the present invention is: rendzinas, cement lime stabilized soil, cement-soil all should be concentrated employing forced mixer mixing by stirring factory; Cement lime stabilized soil is should be first even by lime, cement mixing, then adds and bury and water stirs, and water content should be slightly larger than optimum moisture content; Pave and should adopt machinery to pave, the length that at every turn paves is preferably the section of rolling; After completing, should roll in sky.Rendzinas, the preparation method of cement lime stabilized soil and cement-soil is prior art, according to one embodiment of present invention, in rendzinas, lime quality percentage composition is 8-12%, in cement lime stabilized soil, cement quality percentage composition is 2-4%, lime quality percentage composition is 3-6%, in cement-soil, cement quality percentage composition is 5-8%, rendzinas, cement lime stabilized soil and cement-soil water content all should be than the high 0%-3% of optimum moisture content, wherein in rendzinas, water quality percentage composition is 12-30%, soil 58-80%, in cement lime stabilized soil, water quality percentage composition is 10-25%, soil 65-85%, in cement-soil, water quality percentage composition is 8-22%, soil 70-87%.
Embodiment 1
Certain soft foundation heavy duty city thoroughfare, medium-sized or above lorry and 9000/d of motorbus daily traffic volume track, standard axle load accumulative total in design period on a track acts on number of times 7,400 ten thousand times, grade elevation is limited by passage lanes and bridge construction thing, the depth of fill is between 1.5-1.8m, and the optimum moisture content of rendzinas, cement lime stabilized soil, cement-soil soil used is 15%.
According to medium-sized or above lorry and motorbus daily traffic volume and standard axle load accumulative total, act on number of times and determine that this road traffic grade is very heavy traffic, according to roadbed filling height, determine that roadbed digs 0.2-0.5m under needing, the roadbed work area degree of depth is 2.0 meters, treatment measures are: after digging under the clear table of roadbed, the processing mode that orlop adopts the slag+steel of delaying to mould grid+rubble, the thick 60cm of the slag of delaying, it is 2cm that steel is moulded grid thick, the thick 40cm of rubble, then be respectively from the bottom up 20cm rendzinas (lime 9%+ water 16%+ soil 75%)+20cm rendzinas (lime 12%+ water 18%+ soil 70%)+20cm cement lime stabilized soil (2% cement+5% lime+water 15%+ soil 78%)+20cm cement lime stabilized soil (4% cement+6% lime+water 16%+ soil 74%)+20cm cement-soil (8% cement+water 15%+ soil 77%).
Actual measurement roadbed CBR is greater than 30%, and roadbed flexure is 100-130 (1/100mm).And CBR is up to 13-16% after traditional excavation section Soft Ground, roadbed flexure minimum is 230-280 (1/100mm).
Embodiment 2
Certain soft foundation heavy duty city expressway, medium-sized or above lorry and 4000/d of motorbus daily traffic volume track, standard axle load accumulative total in design period on a track acts on number of times 2,400 ten thousand times, grade elevation is subject to dig under the need of absolute altitude restriction around, and the optimum moisture content of rendzinas, cement lime stabilized soil, cement-soil soil used is 16%.
According to medium-sized or above lorry and motorbus daily traffic volume and standard axle load accumulative total, act on number of times and determine that this road traffic grade is heavy traffic, according to periphery elevation restriction roadbed, need excavation, the roadbed work area degree of depth is 1.8m, processing thickness is also 1.8m, treatment measures are: after desilting airing, orlop adopt 50cm to delay processing mode that slag+steel moulds grid 1cm+30cm rubble, then be respectively from the bottom up 20cm rendzinas (lime 8%+ water 18%+ soil 74%)+20cm rendzinas (lime 10%+ water 19%+ soil 71%)+20cm cement lime stabilized soil (2% cement+4% lime+water 17%+ soil 75%)+20cm cement lime stabilized soil (3% cement+5% lime+water 18%+ soil 74%)+20cm cement-soil (5% cement+water 16%+ soil 79%).
Actual measurement roadbed CBR is greater than 22%, and roadbed flexure is 110-150 (1/100mm).And CBR is up to 13-16% after traditional excavation section Soft Ground, roadbed flexure minimum is 230-280(1/100mm).
Embodiment 3
Certain soft foundation heavy duty speedway, medium-sized or above lorry and 3000/d of motorbus daily traffic volume track, standard axle load accumulative total in design period on a track acts on number of times 1,500 ten thousand times, grade elevation is limited by passage lanes and bridge construction thing, the depth of fill is between 2.3-3.0m, and the optimum moisture content of rendzinas, cement lime stabilized soil, cement-soil soil used is 11%.
According to medium-sized or above lorry and motorbus daily traffic volume and standard axle load accumulative total, act on number of times and determine that this road traffic grade is heavy traffic, according to roadbed, fill out and highly determine that roadbed does not need down to dig, the roadbed work area degree of depth is 1.5m, treatment measures are: after the clear table of roadbed, fill the following 150cm in roadbed top, then to lower and on fill the 40cm slag+steel of delaying and mould grid 3cm+20cm rubble, 20cm rendzinas (lime 8%+ water 13%+ soil 79%)+30cm rendzinas (lime 10%+ water 14%+ soil 76%)+20cm cement lime stabilized soil (2% cement+5% lime+water 12%+ soil 81%)+20cm cement-soil (5% cement+water 11%+ soil 84%).
Actual measurement roadbed CBR is greater than 25%, and roadbed flexure is 120-160(1/100mm).And CBR is up to 18-22% after traditional embankment section Soft Ground, roadbed flexure minimum is 180-210 (1/100mm).
Embodiment 4
Certain soft foundation heavy duty speedway, medium-sized or above lorry and 8000/d of motorbus daily traffic volume track, standard axle load accumulative total in design period on a track acts on number of times 4,500 ten thousand times, grade elevation is limited by passage lanes and bridge construction thing, the depth of fill is between 2.2-2.6m, and the optimum moisture content of rendzinas, cement lime stabilized soil, cement-soil soil used is 13%.
According to medium-sized or above lorry and motorbus daily traffic volume and standard axle load accumulative total, act on number of times and determine that this road traffic grade is very heavy traffic, according to roadbed, fill out and highly determine that roadbed does not need down to dig, the roadbed work area degree of depth is 2.0m, treatment measures are: after the clear table of roadbed, fill the following 200cm in roadbed top, then to lower and on fill the 60cm slag+steel of delaying and mould grid 3cm+40cm rubble, 20cm rendzinas (lime 9%+ water 15%+ soil 76%)+20cm rendzinas (lime 11%+ water 16%+ soil 73%)+20cm cement lime stabilized soil (2% cement+5% lime+water 14%+ soil 79%)+20cm cement lime stabilized soil (4% cement+6% lime+water 15%+ soil 75%)+20cm cement-soil (7% cement+water 13%+ soil 80%).
Actual measurement roadbed CBR is greater than 29%, and roadbed flexure is 120-160(1/100mm).And CBR is up to 18-22% after traditional embankment section Soft Ground, roadbed flexure minimum is 180-210(1/100mm).
Soft foundation Heavy Traffic road foundation method for designing of the present invention has obvious technical characterstic: with respect to traditional road foundation method for designing, subgrade strength of the present invention and performance obviously improve.In general, the pavement performance of the road foundation each side of the present invention's design strengthens, and more can meet the requirement of vehicular load and soft foundation, has improved soft foundation Heavy Traffic road quality.
Claims (9)
1. a soft foundation Heavy Traffic road foundation, it is characterized in that a kind of soft foundation Heavy Traffic road foundation, it is characterized in that roadbed work area gross thickness 150-200cm, be from bottom to top provided with successively the slag blanket of delaying, steel is moulded grid layer, macadam, lime soil layer, cement and lime soil layer, cement soil layer.
2. soft foundation Heavy Traffic road foundation method for designing according to claim 1, is characterized in that each layer thickness is respectively: the slag blanket 40-60cm that delays, steel are moulded grid layer 1-3cm, macadam 20-40cm, lime soil layer 20-60cm, cement and lime soil layer 20-60cm, cement soil layer 20-40cm.
3. soft foundation Heavy Traffic road foundation according to claim 1, the slag that it is characterized in that delaying is the rubble after explosion, the stone content that particle diameter is greater than 40mm is greater than 70%, but the maximum particle diameter of stone is not more than 100mm.
4. soft foundation Heavy Traffic road foundation according to claim 1, is characterized in that rubble is the graded broken stone after fragmentation, screening, and its grating is: sieve diameter is 37.5mm, by mass percent, is 100%; Sieve diameter is 31.5mm, by mass percent, is 90 ~ 100%; Sieve diameter is 19.0mm, by mass percent, is 75 ~ 90%; Sieve diameter is 9.5mm, by mass percent, is 50 ~ 70%; Sieve diameter is 4.75mm, by mass percent, is 35 ~ 50%; Sieve diameter is 2.36mm, by mass percent, is 20 ~ 40%; Sieve diameter is 1.18mm, by mass percent, is 10 ~ 30%; Sieve diameter is 0.60mm, by mass percent, is 6 ~ 20%; Sieve diameter is 0.075mm, by mass percent, is 0 ~ 7%.
5. soft foundation Heavy Traffic road foundation according to claim 1, it is characterized in that in rendzinas, lime quality percentage composition is 8-12%, in cement lime stabilized soil, cement quality percentage composition is that 2-4%, lime quality percentage composition are 3-6%, and in cement-soil, cement quality percentage composition is 5-8%.
6. soft foundation Heavy Traffic road foundation method for designing according to claim 1, is characterized in that cement-soil and cement lime stabilized soil cement used is 42.5 grades of portland cements, and rendzinas and cement lime stabilized soil lime used is the new slaked lime of 1-3 level.
7. a soft foundation Heavy Traffic road foundation construction method, after it is characterized in that digging under the clear table of roadbed, from bottom to top sets gradually the slag blanket of delaying, steel is moulded grid layer, macadam, lime soil layer, cement and lime soil layer and cement soil layer.
8. soft foundation Heavy Traffic road foundation construction method according to claim 7, it is characterized in that described roadbed gross thickness is 150-200cm, each layer thickness is respectively: the slag 40-60cm that delays, steel are moulded grid layer 1-3cm, rubble 20-40cm, rendzinas 20-60cm, cement lime stabilized soil 20-60cm, cement-soil 20-40cm.
9. soft foundation Heavy Traffic road foundation construction method according to claim 8, is characterized in that rendzinas, cement lime stabilized soil, cement-soil are by stirring the concentrated forced mixer mixing that adopts of factory; Cement lime stabilized soil is first even by lime, cement mixing, then adds and bury and water stirs; Each layer first paves and rolls afterwards, paves and should adopt machinery to pave, and the length that at every turn paves is preferably the section of rolling; In rendzinas, lime quality percentage composition is 8-12%, and in cement lime stabilized soil, cement quality percentage composition is that 2-4%, lime quality percentage composition are 3-6%, and in cement-soil, cement quality percentage composition is 5-8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210348742.4A CN103669144A (en) | 2012-09-19 | 2012-09-19 | Soft soil foundation heavy traffic road subgrade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210348742.4A CN103669144A (en) | 2012-09-19 | 2012-09-19 | Soft soil foundation heavy traffic road subgrade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103669144A true CN103669144A (en) | 2014-03-26 |
Family
ID=50307861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210348742.4A Pending CN103669144A (en) | 2012-09-19 | 2012-09-19 | Soft soil foundation heavy traffic road subgrade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103669144A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532712A (en) * | 2014-12-25 | 2015-04-22 | 中交第二公路勘察设计研究院有限公司 | Design method and structure for preventing settlement-deformation damage of soft-rock subgrade of road |
| CN115029970A (en) * | 2022-06-20 | 2022-09-09 | 交通运输部公路科学研究所 | Automatic anti-seepage access road structure suitable for soft soil foundation of ecological sensitive area and construction method |
-
2012
- 2012-09-19 CN CN201210348742.4A patent/CN103669144A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532712A (en) * | 2014-12-25 | 2015-04-22 | 中交第二公路勘察设计研究院有限公司 | Design method and structure for preventing settlement-deformation damage of soft-rock subgrade of road |
| CN115029970A (en) * | 2022-06-20 | 2022-09-09 | 交通运输部公路科学研究所 | Automatic anti-seepage access road structure suitable for soft soil foundation of ecological sensitive area and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111074715A (en) | Anti-crack roadbed and pavement structure and construction method thereof | |
| CN104193228A (en) | High elasticity salt accumulating ice and snow melting asphalt mixture and preparation method thereof | |
| CN101660294A (en) | Steel bridge deck pavement structure and pavement method thereof | |
| CN103526664A (en) | Determining method suitable for mix proportion of asphalt mixture of heavy traffic road surfaces | |
| CN106812040A (en) | A kind of light traffic Highway Pavement Structures using building waste as base material | |
| CN104452510B (en) | Immediate construction method of rural road | |
| Hainin et al. | The importance of stone mastic asphalt in construction | |
| CN101082199A (en) | Road surface structure and construction method therefor | |
| Li et al. | Study on application of TerraZyme in road base course of road | |
| CN111455768A (en) | Flexible roadbed asphalt concrete structure and construction method thereof | |
| CN108589454B (en) | Composite reinforced damping roadbed doped with construction waste and construction technical method | |
| CN102561134B (en) | Compaction method for embankment filling under high liquid limit red clay according to equilibrium moisture content | |
| CN212533589U (en) | Anti-crack roadbed and pavement structure | |
| Kumar et al. | Application of Coconut Coir and Fly ash in Sub grade strengthening | |
| CN103669144A (en) | Soft soil foundation heavy traffic road subgrade | |
| Misra et al. | A new technology of marble slurry waste utilisation in roads | |
| Paotong et al. | Use of natural rubber latex (NRL) in improving properties of reclaimed asphalt pavement (RAP) | |
| CN102828455A (en) | High-performance graded broken stone mixture and preparation method thereof | |
| CN106676995B (en) | A kind of deep formula asphalt pavement structure design method of Bayer process red mud roadbed | |
| Tumpu et al. | Marshall characteristics of asphalt concrete binder course (AC-BC) mixture containing modificated asbuton (retona blend 55) type | |
| CN215289546U (en) | Ground structure of heavy load road | |
| CN106351101B (en) | A kind of Heavy Traffic pavement of road paving structure based on particulate formula high-performance bituminous concrete | |
| CN102535297B (en) | Polypropylene fiber concrete roadway structure suitable for large-tonnage cars and construction method | |
| Sas | Application of recycled concrete aggregate in road engineering | |
| CN104652211A (en) | Novel road surface mixture of stably-gradated broken-stone cushion layer doped with fine limestone aggregates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |
|
| RJ01 | Rejection of invention patent application after publication |