CN110004788A - A kind of drainage asphalt paving structure slowing down pore plugging - Google Patents
A kind of drainage asphalt paving structure slowing down pore plugging Download PDFInfo
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- CN110004788A CN110004788A CN201910241480.3A CN201910241480A CN110004788A CN 110004788 A CN110004788 A CN 110004788A CN 201910241480 A CN201910241480 A CN 201910241480A CN 110004788 A CN110004788 A CN 110004788A
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- intensitive
- porous base
- slowing down
- base course
- big gap
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Classifications
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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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
- E01C11/226—Coherent pavings
-
- 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
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of high-intensitive drainage asphalt paving structure for slowing down pore plugging, specific structure is from top to bottom successively are as follows: big gap pitch draining abrasion surface layer, high-intensitive porous base course, big gap porous base course.Advantage: relative to conventional discharge asphalt pavement, after blocking, composite paved according to the present invention still keeps stronger lower infiltration discharge capacity, and water permeability is reduced to 80% or so (voidage 23%) before blocking, is still able to maintain higher rainwater and passes through efficiency.After high pressure washing maintenance, a kind of drain function recovery effects of high-intensitive drainage asphalt paving structure slowing down pore plugging according to the present invention are preferable, it can restore to the functionality of 90% or more original state, effectively the functional forfeiture speed of drainage pavement is delayed, drainage pavement is enabled to play more persistently effective effect in the sponge urban construction of Semiarid Area of North.
Description
Technical field
The present invention relates to a kind of drainage asphalt paving structures for slowing down pore plugging, belong to road pavement technical field.
Background technique
Porous asphalt pavement can absorb rapidly ground precipitation, reduce noise pollution, alleviate the functions such as urban heat land effect,
It is widely used in sponge urban construction.But porous asphalt pavement is after a period of use, road table ash
The particulate matters such as dirt, rubber for tire, which easily enter paving structure, causes gap to block, voidage decline, and road surface loses or the part row of losing
Water function, it is especially prominent in the poor northern area city performance of air quality.Gap blocks the decline that will cause drainage performance,
Surface gathered water is more prone to produce when rainfall.And in road surface structare layer any one layer in full water or soaked state, can all cause to tie
Structure layer strength reduction accelerates the generation and development of various pavement diseases.Therefore, research can slow down the draining of stopping state generation
Asphalt pavement structure guarantees that fast and effeciently water delivery is to guarantee a key of porous asphalt pavement service performance.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of row for slowing down pore plugging is provided
Bituminous grout paving structure, improves the anti-blockage capability and water stability of porous asphalt pavement, and has the characteristics that be easy to rinse,
To substantially prolong the service life that drainage asphalt is mated formation.
Mat formation knot in order to solve the above technical problems, the present invention provides a kind of high-intensitive drainage asphalt for slowing down pore plugging
Structure, which is characterized in that it is permeable that the asphalt pavement structure is followed successively by big gap pitch draining abrasion surface layer, high intensity from top to bottom
Base and big gap porous base course.
Further, the aggregate used in the big gap pitch draining abrasion surface layer is basalt, high-intensitive permeable base
For the aggregate used in layer and big gap porous base course for limestone, the aggregate includes coarse aggregate and fine aggregate；
The coarse aggregate uses the 1# material that partial size is 9.5mm≤r < 4.75mm for the 1# of r > 9.5mm material or partial size；
The fine aggregate uses the 4# material that partial size is r < 2.36mm for the 3# of 4.75mm≤r < 2.36mm material or partial size.
Further, the big gap pitch draining abrasion surface layer by SBS high stick modified pitch, 1# material, 2# material, 4# material with
And five kinds of materials of miberal powder are prepared, voidage be 15% ~ 25%, bitumen aggregate ratio between 3.2% ~ 5.7%, 1# material, 2# material, 4# material with
And the match ratio of miberal powder is 30% ~ 50%:40% ~ 60%:0 ~ 15%:0 ~ 15%.
Further, the voidage of the big gap pitch draining abrasion surface layer is 23%, optimum oil-stone ratio 3.9%, respectively
The match ratio that shelves gather materials is 1# material: 2# material: 4# material: miberal powder=40%:49%:8%:3%.
Further, the high-intensitive porous base course is prepared by aggregate and RAP material (asphalt reclaimed materials), institute
The match ratio value range that each shelves of high-intensitive porous base course of category gather materials is respectively 1# material: 30% ~ 50%, 2# material: 15% ~ 25%, RAP
Material: the bitumen aggregate ratio of 35% ~ 45%, RAP material is between 3.2% ~ 5.7%.
Further, the match ratio value range that each shelves of high-intensitive porous base course gather materials is respectively 1# material: 2# material: RAP material=
The good bitumen aggregate ratio of 40%:20%:40%, RAP material is 3.6%.
Further, the match ratio value range that each shelves of the big gap porous base course gather materials is respectively 1# material 0% ~ 60%:
2# expects 25% ~ 30%:3# material 15% ~ 20%.
Further, the optimum mix proportion that each shelves of the big gap porous base course gather materials is 1# material: 2# material: 3# material=
55%:27%:18%.
Advantageous effects of the invention:
1) high-intensitive porous base course can be used as screed-coat and make big gap pitch draining mill on big gap porous base course
Consumption surface layer can be laid with it is thin as far as possible, and thin surface layer reduce tamper by distance, also reduce blocking
Possibility；
2) after blocking, a kind of high-intensitive drainage asphalt paving structure slowing down pore plugging disclosed by the invention is still protected
Stronger lower infiltration discharge capacity is held, water permeability is reduced to 80% or so before blocking, is still able to maintain higher rainwater and passes through effect
Rate；
3) after high pressure washing maintenance, a kind of high-intensitive drainage asphalt slowing down pore plugging disclosed by the invention is mated formation
The drain function recovery effects of structure are preferable, can restore to the functionality of 90% or more original state, effectively delay draining road
The functional forfeiture speed in face enables drainage pavement to play more persistently effective effect in sponge urban construction.
Detailed description of the invention
Fig. 1 is the drainage asphalt paving structure schematic diagram that the present invention slows down pore plugging.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
Embodiment 1
As shown in Figure 1, a kind of drainage asphalt paving structure for slowing down pore plugging, specific structure is from top to bottom successively are as follows: big
Gap pitch draining abrasion surface layer 1, high-intensitive porous base course 2, big gap porous base course 3.
Preferably, the aggregate in drainage asphalt paving structure includes coarse aggregate and fine aggregate；
The coarse aggregate uses the 1# material that partial size is 9.5mm≤r < 4.75mm for the 1# of r > 9.5mm material or partial size；It is described thin
Aggregate uses the 4# material that partial size is r < 2.36mm for the 3# of 4.75mm≤r < 2.36mm material or partial size.
Big gap pitch draining abrasion surface layer 1 by the big gap pitch draining abrasion surface layer by SBS high stick modified pitch,
1# material, 2# material, 4# material and five kinds of materials of miberal powder are prepared, and aggregate material is basalt.Preferably, gap pitch draining mill
The voidage for consuming surface layer 1 is 23%, optimum oil-stone ratio 3.9%, and the match ratio that each shelves gather materials is 1# material: 2# material: 4# material: miberal powder=
40%:49%:8%:3%.
The building stones formate gradation composition of the big gap pitch draining abrasion surface layer 1 are as follows:
| Screen size | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| 23% voidage formate gradation composition | 100.0 | 92.5 | 67.6 | 20.5 | 11.9 | 9.1 | 7.5 | 5.8 | 4.9 | 3.7 |
| The gradation upper limit | 100 | 100 | 80 | 30 | 22 | 18 | 15 | 12 | 8 | 6 |
| Gradation lower limit | 100 | 90 | 60 | 12 | 10 | 6 | 4 | 3 | 3 | 2 |
| Gradation intermediate value | 100 | 95 | 70 | 21 | 16 | 12 | 9.5 | 7.5 | 5.5 | 4 |
The SBS high of the big gap pitch draining abrasion surface layer 1 sticks modified pitch index request are as follows:
Preferably, high-intensitive porous base course 2 is prepared by limestone and asphalt reclaimed materials (RAP material), each shelves collection
The match ratio of material is 1# material: 2# material: RAP material=40%:20%:40%, optimum oil-stone ratio 3.6%.
The building stones formate gradation composition of the high intensity porous base course 2 are as follows:
| Screen size | 31.5 | 26.5 | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Formate gradation composition | 100 | 100 | 86.4 | 72.1 | 60.8 | 43.6 | 15.5 | 9.2 | 7.0 | 4.5 | 3.1 | 2.2 | 1.6 |
| The gradation upper limit | 100 | 80 | 60 | 45 | 30 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Gradation lower limit | 100 | 100 | 100 | 90 | 82 | 70 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Gradation intermediate value | 100 | 90 | 80 | 67.5 | 56 | 43 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
The formate gradation composition of the asphalt reclaimed materials (RAP material) of the high intensity porous base course 2 are as follows:
| Screen size | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| 1# | 100 | 97.4 | 88.8 | 65.0 | 33.3 | 21.3 | 16.2 | 10.1 | 6.8 | 4.6 | 3.1 |
Big gap porous base course 3 is prepared by limestone, and the match ratio that each shelves gather materials is 1# material: 2# material: 3# material=55%:
27%:18%, optimum moisture content 3.2%.
The building stones formate gradation composition of the big gap porous base course 3 are as follows:
| Screen size | 31.5 | 26.5 | 19 | 16 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Formate gradation composition | 100 | 100.0 | 81.3 | 63.1 | 52.2 | 41.8 | 20.6 | 5.6 | 3.4 | 2.2 | 1.6 | 1.3 | 1.1 |
| The gradation upper limit | 100 | 100 | 95 | — | 80 | 65 | 55 | 25 | 8 | — | 5 | — | 0 |
| Gradation lower limit | 100 | 95 | 80 | — | 60 | 45 | 40 | 5 | 0 | — | 0 | — | 0 |
| Gradation intermediate value | 100 | 97.5 | 87.5 | — | 70 | 55 | 47.5 | 15 | 4 | — | 2.5 | — | 0 |
A kind of high-intensitive drainage asphalt paving structure slowing down pore plugging is followed successively by big gap pitch draining abrasion from top to bottom
Surface layer 1, high-intensitive porous base course 2, big gap porous base course 3.Specifically it is laid in No. 1 soil box: the 1. big gap pitch draining mill of 4cm
It consumes surface layer (voidage 23%)；2. 10cm high intensity porous base course；3. the big gap porous base course of 30cm；4. waterproof interlayer is (to the right
5 ° or so of inclination, collects convenient for water flow)；5. soil matrix layer (casting concrete reinforcing).
As a comparison, No. 2 soil boxs are one kind that common drainage asphalt is mated formation both at home and abroad, and conventional double is mated formation, in base's (this
Experiment base material be open gradation rubble) on be directly laid with macrovoid porous asphalt pavement.Specific structure are as follows: the 1. big sky of 4cm
Gap asphalt (voidage 23%)；2. 30cm open gradation rubble；3. waterproof interlayer (tilts 5 ° or so to the right, is convenient for water flow
Collect)；4. soil matrix layer (casting concrete reinforcing).
As a comparison, No. 3 soil boxs are one kind that common drainage asphalt is mated formation both at home and abroad, and conventional monolayers are mated formation, soil layer it
On pour fluid-tight concrete, then directly be laid with macrovoid porous asphalt pavement, the vertical and lateral drainage entirely mated formation
All mated formation solution by surface layer.Its specific structure are as follows: 1. 10cm Asphalt mix for open-graded friction course (voidage 23%)；2. waterproof every
Layer (tilts 5 ° or so, collect convenient for water flow) to the right；3. soil matrix layer (casting concrete reinforcing).
The case where being met according to 2 years, 5 years, 10 years, 20 years, 50 years one, carry out respectively 48.5mm/h, 60.4mm/h,
The artificial rainfall experiment of five kinds of raininess of 69.4mm/h, 78.4mm/h, 90.3mm/h obtains the diameter of three soil boxs during the rainfall
Changes in flow rate, rain time 0-60min.In the rainfall of five raininess, three kinds mat formation it is interior do not find seeping phenomenon,
Show that three kinds of paving structures can make rainfall in the case where going out and circulating smooth and be infiltered at present into waterproof layer.The present invention design one
The high-intensitive drainage asphalt paving structure (voidage 23%) for kind slowing down pore plugging can maintain later steady after rainfall
It fixs and seeps the time, delay Rainfall-runoff speed, sluggish flood peak time of occurrence.
According to the grain composition actual conditions of Jinan City road surface pollutant, the blocking of appropriate gradation is prepared with clay and sand
Agent, and plugging handlings are carried out to three kinds in embodiment 1 road surfaces mated formation, carry out respectively later 48.5mm/h, 60.4mm/h,
The artificial rainfall experiment of five kinds of raininess of 69.4mm/h, 78.4mm/h, 90.3mm/h obtains three kinds of diameters mated formation during the rainfall
Variations in Flow Changes curve.Stable lower seep lasts three as assessment after acting time point of rising, stablizing infiltration rate and rainfall
Draining is mated formation the change indicator on pervious function, and NEW TYPE OF COMPOSITE is mated formation the behaving oneself best of (voidage 23%), due to biggish
Can inside of mating formation be discharged with water flow as early as possible in the collective effect that road surface voidage and multilayer are mated formation, the tamper into road surface,
Water permeability is reduced to 80% or so before blocking, is still able to maintain higher rainwater by efficiency, do not generate surface gathered water from
And influence traffic.
The road surface after blocking is rinsed 15 minutes using giant, simulates the pavement preservation in practical application, punching
The artificial drop of five kinds of raininess of 48.5mm/h, 60.4mm/h, 69.4mm/h, 78.4mm/h, 90.3mm/h is carried out after washing respectively
Rain experiment, obtains three kinds of changes in runoff conditional curves mated formation during the rainfall.After high pressure washing is safeguarded, drain
In terms of functional restoration, NEW TYPE OF COMPOSITE mat formation (voidage 23%) drain function recovery effects it is best, can restore to blocking
Preceding 90% or more functionality, followed by conventional double, which are mated formation, can restore to the functionality of blocking preceding 80% or so, and worst is to pass
System single layer is mated formation, although restoring after comparing blocking, amplitude is maximum, can only also restore to blocking 70% less than.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of high-intensitive drainage asphalt paving structure for slowing down pore plugging, which is characterized in that the asphalt pavement structure from
Big gap pitch draining abrasion surface layer, high-intensitive porous base course and big gap porous base course are followed successively by under.
2. the high-intensitive drainage asphalt paving structure according to claim 1 for slowing down pore plugging, which is characterized in that described
The aggregate used in big gap pitch draining abrasion surface layer is adopted in high-intensitive porous base course and big gap porous base course for basalt
Aggregate is limestone, and the aggregate includes coarse aggregate and fine aggregate；
The coarse aggregate uses the 1# material that partial size is 9.5mm≤r < 4.75mm for the 1# of r > 9.5mm material or partial size；
The fine aggregate uses the 4# material that partial size is r < 2.36mm for the 3# of 4.75mm≤r < 2.36mm material or partial size.
3. the high-intensitive drainage asphalt paving structure according to claim 2 for slowing down pore plugging, which is characterized in that described
Big gap pitch draining abrasion surface layer by SBS high stick modified pitch, 1# material, 2# material, the five kinds of materials preparations of 4# material and miberal powder and
Be 15% ~ 25% at, voidage, bitumen aggregate ratio between 3.2% ~ 5.7%, 1# material, 2# material, 4# material and miberal powder match ratio be 30% ~
50%:40% ~ 60%:0 ~ 15%:0 ~ 15%.
4. the high-intensitive drainage asphalt paving structure according to claim 3 for slowing down pore plugging, which is characterized in that described
The voidage of big gap pitch draining abrasion surface layer is 23%, and optimum oil-stone ratio 3.9%, the match ratio that each shelves gather materials is 1# material:
2# material: 4# material: miberal powder=40%:49%:8%:3%.
5. the high-intensitive drainage asphalt paving structure according to claim 2 for slowing down pore plugging, which is characterized in that described
High-intensitive porous base course is prepared by aggregate and RAP material, the match ratio range that affiliated each shelves of high-intensitive porous base course gather materials
Value is respectively 1# material: 30% ~ 50%, 2# material: 15% ~ 25%, RAP material: the bitumen aggregate ratio of 35% ~ 45%, RAP material is between 3.2% ~ 5.7%.
6. the high-intensitive drainage asphalt paving structure according to claim 5 for slowing down pore plugging, which is characterized in that high-strength
The match ratio value range that degree each shelves of porous base course gather materials is respectively 1# material: 2# material: RAP material=40%:20%:40%, the good oil of RAP material
Stone ratio is 3.6%.
7. the high-intensitive drainage asphalt paving structure according to claim 2 for slowing down pore plugging, which is characterized in that described
The match ratio value range that each shelves of big gap porous base course gather materials be respectively 1# expect 0% ~ 60%:2# expect 25% ~ 30%:3# material 15% ~
20%。
8. the high-intensitive drainage asphalt paving structure according to claim 7 for slowing down pore plugging, which is characterized in that described
The optimum mix proportion that each shelves of big gap porous base course gather materials is 1# material: 2# material: 3# material=55%:27%:18%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910482A (en) * | 2020-08-21 | 2020-11-10 | 南京林业大学 | Design method for anti-blocking mix proportion of upper layer and lower layer of double-layer porous asphalt pavement |
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Application publication date: 20190712 |