CN108342091A - A kind of cold-mix asphalt, the cold mixing cover mixture based on waste asphalt pavement material - Google Patents
A kind of cold-mix asphalt, the cold mixing cover mixture based on waste asphalt pavement material Download PDFInfo
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- CN108342091A CN108342091A CN201810113619.1A CN201810113619A CN108342091A CN 108342091 A CN108342091 A CN 108342091A CN 201810113619 A CN201810113619 A CN 201810113619A CN 108342091 A CN108342091 A CN 108342091A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
A kind of cold mixing cover mixture the invention discloses cold-mix asphalt and based on waste asphalt pavement material, belongs to field of road.The cold-mix asphalt is 1 by weight proportion:The A grades of pitches of active regeneration additive and 90# road oil of (0.9 1.1) are mixed to prepare.The cold mixing cover mixture, aggregate are mainly waste asphalt pavement material.Compared with prior art, on the one hand cold-mix asphalt of the invention can activate the activity of old pitch in waste asphalt pavement material, on the other hand have preferable cementation, play a positive role to the useful life longevity of mixture.Cold mixing covering material has preferable elasticity and self-healing capability, can reduce the reflection crack of surfacing, and the material has good waterproof ability, it is possible to reduce the infringement of road Biao Shui road pavements lower layer extends road physical life.
Description
Technical field
The present invention relates to field of road, specifically a kind of cold-mix asphalt and be based on waste asphalt pavement material
Cold mixing cover mixture.
Background technology
In China traditional road surface larger area repair, cover and Laying Asphalt Surface Course on Cement Concrete Pavement mistake
Cheng Zhong uses hot-mix asphalt mixture.Hot-mix asphalt mixture needs construction at high temperature, is affected by temperature larger, not only pollutes
Environment, and surplus material is difficult to continue with.For the maintenance work in construction unfavourable season pavement disease and road surface, using heat
Mix the effect that asphalt does not often reach requirement.
In addition as highway in China starts by the newly-built maintenance being transferred to built road, a large amount of pavement maintenance production
A large amount of waste asphalt pavement material (Milled asphalt materials) is given birth to, on the one hand a large amount of milling material causes the pollution of environment, separately
The stacking of one side milling material will also expend and stack cost, thus rationally, efficiently also will be for one as maintenance using milling material
Item vital task.
Invention content
The technical assignment of the present invention is in view of the above shortcomings of the prior art, to provide a kind of cold-mix asphalt.
The further technical assignment of the present invention is to provide a kind of cold mixing cover mixing based on waste asphalt pavement material
Material.
The technical assignment of the present invention is realized in the following manner：A kind of cold-mix asphalt, its main feature is that being by weight proportion
1:The A grades of pitches of active regeneration additive and 90# road oil of (0.9-1.1) are mixed to prepare,
The active regeneration additive is mixed by the raw material of following mass percent：
The sum of mass percent of each raw material of active regeneration additive is 100%.
Each preferred mass percent of raw material in active regeneration additive：
The sum of mass percent of each raw material of active regeneration additive is 100%.
The best mass percent of each raw material in active regeneration additive：
In order to reach best technique effect, above-mentioned cold-mix asphalt preferably uses following production method：By 90# road stones
Oily A grades of pitch is heated to 140-160 DEG C, mixes with active regeneration additive at room temperature, is obtained after stirring evenly to scale
Cold-mix asphalt.The obtained salable normal temperature storage of cold-mix asphalt.For the finished product cold-mix asphalt that the resting period is more long, before use
It need to stir in advance 1 hour.
When being produced using the asphalt tank with blender, it can be stirred 2-3 hours under the conditions of 140-160 degrees Centigrades.
Cold mixing cover mixture based on waste asphalt pavement material, its main feature is that by cold mixing material aggregate with it is above-mentioned cold
Pitch is mixed to be mixed to prepare according to following weight proportion：
100 parts of cold mixing material aggregate
1-1.5 parts of cold-mix asphalt,
The cold mixing material aggregate includes waste asphalt pavement material.
Preferably, the cold mixing material aggregate is pressed by waste asphalt pavement material and new premixed aggregate, fine grinding quicklime powder
Following weight percent is composed：
Waste asphalt pavement material：80%-90%
New premixed aggregate：10%-20%
Fine grinding quicklime powder：0%-2%
The sum of weight percent of three is 100%.
Waste asphalt pavement material and the weight percent of new premixed aggregate, fine grinding quicklime powder are preferably：
Waste asphalt pavement material：85-90%
New premixed aggregate：10-15%
Fine grinding quicklime powder：0.5-1.5%.
It is preferred that prepare cold mixing material aggregate with the waste asphalt pavement material that is sieving through, waste asphalt pavement material according to
5mm*5mm, 10mm*10mm, 15*15mm, 20mm*20mm sieve pore are sieved into fourth gear material, and super particle size fraction screens out, and every grade waste and old
The mass percentage of non-bituminous surface material is no more than 5% in asphalt pavement material.The non-bituminous base material refers to
Semi-rigid sub-base material, Concrete Pavement Materials, two ash stability material without pitch cementing material etc..
The waste asphalt pavement material can be that matrix pitch waste asphalt pavement material and/or modified pitch are waste and old
Asphalt pavement material.
The new premixed aggregate is preferably obtained by following methods premixing：
New by appropriate grain size gathers materials that be heated to material temperature be 160~170 DEG C, newly gather materials through heating and dust removal process after
A grades of asphalt of 70# or 90# roads that sprinkling accounts for the weight 0.5-1.5% that gathers materials carry out mix, asphalt heating temperature 135-145
DEG C, duration of mixing is not less than 20s；After mix, mix is laid in clean ground, after temperature is down to room temperature, collects
Mix is broken up to obtain new premixed aggregate with crusher.
The thickness that tiles is no more than 50cm.
In order to avoid crusher causes compared with havoc aggregate grading, it is preferable to use double roller shaft type crusher.
Preferably, extracting screening result and new collection of the grading limit of cold mixing material according to waste asphalt pavement material
The screening result of material synthesizes, and grading limit is：
Coarse grain formula：Standard mesh 26.5mm percent of pass ranging from 100%；Standard mesh 19.0mm percent of pass ranging from 90
~100%；Standard mesh 16.0mm percent of pass ranging from 80~93%；Standard mesh 13.2mm percent of pass ranging from 68~
85%；Standard mesh 9.5mm percent of pass ranging from 58~75%；Standard mesh 4.75mm percent of pass ranging from 30~60%；Mark
Quasi- sieve pore 2.36mm percent of pass ranging from 25~50%；Standard mesh 1.18mm percent of pass ranging from 12~35%；Standard mesh
0.3mm percent of pass ranging from 6~25%；Standard mesh 0.075mm percent of pass ranging from 2~6%；
Or middle grain formula：Standard mesh 16.0mm percent of pass ranging from 100%；Standard mesh 13.2mm percent of pass is ranging from
90~100%；Standard mesh 9.5mm percent of pass ranging from 72~90%；Standard mesh 4.75mm percent of pass ranging from 40~
70%；Standard mesh 2.36mm percent of pass ranging from 26~55%；Standard mesh 1.18mm percent of pass ranging from 15~38%；
Standard mesh 0.3mm percent of pass ranging from 8~23%；Standard mesh 0.075mm percent of pass ranging from 2~7%；
Or particulate formula：Standard mesh 13.2mm percent of pass ranging from 100%；Standard mesh 9.5mm percent of pass ranging from 90
~100%；Standard mesh 4.75mm percent of pass ranging from 50~75%；Standard mesh 2.36mm percent of pass ranging from 32~
63%；Standard mesh 1.18mm percent of pass ranging from 20~48%；Standard mesh 0.3mm percent of pass ranging from 10~25%；Mark
Quasi- sieve pore 0.075mm percent of pass ranging from 3~8%.
In order to preferably adapt to above-mentioned grading limit needs, for coarse grain formula cold mixing material aggregate, new aggregate size is preferably
10-20mm；For middle grain formula cold mixing material aggregate, new aggregate size is preferably 10-15mm；For particulate formula cold mixing material aggregate, newly
Aggregate size is preferably 5-10mm.
Old bitumen content is preferably 4%-5% (being measured by extracting or combustion method) in cold mixing material aggregate.If cold mixing material
Aggregate bitumen content is more than 5% or is less than 4% range, it need to be made to meet wanting for bitumen content by adjusting each shelves material ratio
It asks.The screening result that gathers materials after the extracting of cold mixing material aggregate will meet the requirement of grading limit.
Cold mixing cover mixture mix is preferably produced using the interval mixing station with hot recycling pair building.In cold mixing material bone
After cold-mix asphalt is added in material, often disk mixture mix at least 2-5 minutes, mixture mix of being subject to are uniform.
Needing to place after the completion of cold mixing cover mixture mix can use for a period of time, and daily maximum temperature is put less than 5 DEG C of need
It sets 6-8 days；Daily maximum temperature is higher than 5 DEG C, is less than 15 DEG C, need to place 3-5 days；Daily maximum temperature is higher than 15 DEG C, need to place 1-3
Day.Placement process avoids the sun from directly shining, and need to cover waterproof.
Cold mixing cover mixture performance evaluation method and standard of the present invention include：
1, specimen molding requirement
Choose suitable cold mixing cover mixture, the shaping test piece by the way of gyratory compaction, it is desirable that rotary compactor is pressed
According to pressure：600kPa, angle：1.25 °, rotating speed 30rad/min.Test specimen uses diameter 150mm, according to fixed mass charging
Mode is molded, and charge is according to 4000g.
2, evaluation method
2.1 original shapings are evaluated, and are the cold mixing cover mixtures that will place enough dates, are compacted 150 times at 20 DEG C, at
Room temperature bottom knockout after type, test specimen carry out 25 DEG C of Marshall stabilitys experiments after 24 hours respectively in 25 DEG C of ± 2 DEG C of baking oven healths
(it is required that being not less than 10KN), 25 DEG C of abrasion tests (it is required that being less than or equal to 3%).
2.2 final moldings are evaluated, and are the cold mixing cover mixtures that will place enough dates, are compacted 150 times at 40 DEG C, at
It is demoulded immediately after type, test specimen porosity ranges are 2%~5%, and test specimen carries out 60 after 25 DEG C of ± 2 DEG C of baking oven healths 24 hours
The experiment of DEG C Marshall stability (requires to be not less than 15KN), and mixture is according to gyratory compaction as a result, 40 DEG C of molding tracks examinations
Part, and carry out wheel tracking test (it is required that being not less than 800 times/mm).
The cold-mix asphalt of the present invention and the cold mixing cover mixture based on waste asphalt pavement material are compared with prior art
With advantageous effect following prominent：
(1) mixture uses waste asphalt pavement material, reduces pollution of the waste asphalt pavement material to environment, becomes
Waste be changed into values；
(2) cold mixing cover mixture simple production process, production process reduce environmental pollution simultaneously without being heated
Save energy consumption；
(3) durability of cold mixing cover mixture is good, repairs on road surface, can make mixing by Vehicle Load
Material is more closely knit, and mixture integral strength is high；
(4) cold mixing covering material has preferable elasticity and self-healing capability, can reduce the reflection crack of surfacing,
And the material has good waterproof ability, it is possible to reduce the infringement of road Biao Shui road pavements lower layer extends road physical life；
(5) this cold mixing cover mixture tests shaping test piece using gyratory compaction, and proposes mechanics Con trolling index, is conducive to
The control of mixture performance；
(6) cold mixing cover mixture can be stored for a long time, storage later do not influence mixture workability and
Mechanical index, and surplus material can continue with.
Description of the drawings
Attached drawing 1 is the grading calculated curve figure of cold mixing material aggregate in embodiment.
Specific implementation mode
With reference to Figure of description with specific embodiment to the cold-mix asphalt of the present invention and based on waste asphalt pavement material
Cold mixing cover mixture is described in detail below.
Unless otherwise instructed, the content of following each ingredients used is weight percentage content.
Embodiment one
The preparation of cold-mix asphalt：
A grades of pitches of 90# road oil are heated to 150 DEG C, with active regeneration additive at room temperature according to weight ratio 1:
1 ratio mixing, it is desirable that the two is blended in 10 minutes and completes, which can be in the asphalt storage of belt stirrer
It completes.In the case where not heating, blender is started, is stirred 2-3 hours in this case, sealing room temperature storage after the completion of production
It deposits, it is spare.For the finished product cold-mix asphalt that the resting period is more long, need to stir in advance 1 hour before use.
The active regeneration additive is uniformly mixed by following material：
Embodiment two
The preparation of cold mixing cover mixture：
【Cementitious matter】
One gained cold-mix asphalt of embodiment.
【Aggregate】
It uses tri- kinds of sieves of 5mm*5mm, 10mm*10mm, 15*15mm to sieve waste asphalt pavement material for third gear, makees
For waste asphalt pavement material.
The new of screening 10-20mm is gathered materials, to prepare new premixed aggregate.Premixing technique (the i.e. new premixed aggregate newly to gather materials
Preparation process) be：New will gather materials and be heated by intermittent asphalt mixing plant, material temperature is heated to 160~170 DEG C, newly gather materials through
The A grades of asphalt progress mixs of 70# roads for accounting for weight 1% of gathering materials, asphalt heating temperature are sprayed after crossing heating and dust removal process
140 DEG C, mix 25s.After premixed aggregate produces, tile on clean ground, thickness is no more than 50cm, waits for that temperature is down to
After room temperature, new premixed aggregate is collected with loading machine, is broken up and is stacked with double roller shaft type crusher.
The grading limit gathered materials after the extracting of each shelves waste asphalt pavement material and newly is：
Each material mixture ratio is refined as in cold mixing material aggregate：
Grain formula grading during the present embodiment cold mixing material aggregate is selected.Formate gradation composition is as shown in the table：
| Screen size | 19 | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.3 | 0.15 | 0.075 |
| Formate gradation composition | 100.0 | 92.6 | 82.9 | 56.6 | 37.9 | 28.1 | 20.1 | 14.1 | 10.6 | 6.9 |
| Grading requirement | 100.0 | 90-100 | 72-90 | 40-70 | 26-55 | 15-38 | - | 8-23 | - | 2-7 |
Grading curve is as shown in Figure 1.
Cold mixing material aggregate synthetic asphalts content is as shown in the table：
【Preparation method】
Cold-mix asphalt mix ratio is to mix 1.2% outside relative to cold mixing material aggregate, using the interval with hot recycling pair building
Mixing station produces.
Cold mixing material duration of mixing：After cold-mix asphalt is added in waste asphalt pavement material, often disk mixture mix is at least
2-5 minutes, mixture mix of being subject to was uniform.Needing to place a period of time after the completion of mixture mix can use, day highest gas
Temperature need to place 6-8 days less than 5 DEG C；Daily maximum temperature is higher than 5 DEG C, is less than 15 DEG C, need to place 3-5 days；Daily maximum temperature is higher than 15
DEG C, it need to place 1-3 days.Placement process avoids the sun from directly shining, and need to cover waterproof.
【Performance test】
By the mixture of said ratio by indoor asphalt mixture mixing plant mix, equipment duration of mixing is 10 points
Clock, after the completion of mixture mix, indoor placement 4 days (20 DEG C of average indoor temperature).
One, it is molded
The shaping test piece by the way of gyratory compaction, it is desirable that rotary compactor is according to pressure：600kPa, angle：1.25 °,
Rotating speed 30rad/min.Test specimen uses diameter 150mm, is molded in such a way that fixed mass feeds, charge is according to 4000g.
Two, original shaping is evaluated
Mixture is compacted using CONTROL rotary compactors, is compacted 150 times at 20 DEG C, is taken off under room temperature after molding
Mould, test specimen carry out 25 DEG C of Marshall stabilitys experiments (it is required that being not less than after 24 hours respectively in 25 DEG C of ± 2 DEG C of baking oven healths
10KN), 25 DEG C of abrasion tests (it is required that being less than or equal to 3%).Shown in the experimental data are shown in the following table：
| Number | Dry weight | Weight in water | Saturation plane dry weight | Dry density | Voidage | 25 DEG C of Marshall stabilitys |
| 1 | 3854.9 | 2167.3 | 3864.2 | 2.272 | 8.8 | 15.23 |
| 2 | 3862.2 | 2168.6 | 3871.8 | 2.268 | 8.9 | 16.30 |
| 3 | 3858.3 | 2155.6 | 3870.9 | 2.249 | 9.7 | 14.35 |
| 4 | 3833.3 | 2146.5 | 3839.3 | 2.264 | 9.1 | 16.87 |
| 5 | 3854.5 | 2155.2 | 3864.9 | 2.254 | 9.5 | 12.45 |
| 6 | 3856.1 | 2159.9 | 3866.1 | 2.260 | 9.2 | 15.74 |
Abrasion test
| Number | Highly (mm) | Dry weight (g) before experiment | Dry weight (g) after experiment | Mass loss rate |
| 1 | 75.5 | 3044.3 | 3003.2 | 1.35 |
| 2 | 76.3 | 3095.8 | 3043.2 | 1.70 |
| 3 | 75.8 | 3072.9 | 3024.8 | 1.57 |
Three, final molding is evaluated
Mixture is compacted using CONTROL rotary compactors, is the cold mixing cover mixing that will place enough dates
Material, is compacted 150 times at 40 DEG C, is demoulded immediately after molding, and test specimen porosity ranges are 2%~5%, and test specimen is in 25 DEG C of ± 2 DEG C of bakings
After cage breeding is given birth to 24 hours, 60 DEG C of Marshall stability experiments (it is required that being not less than 15KN) are carried out, mixture is according to gyratory compaction
As a result, 40 DEG C of molding rut test pieces, and carry out wheel tracking test (it is required that being not less than 800 times/mm).
Mixture volume index and stability test
| Number | Dry weight | Weight in water | Saturation plane dry weight | Dry density | Voidage | 60 DEG C of Marshall stabilitys |
| 1 | 3850.8 | 2249.1 | 3860 | 2.390 | 4.0 | 16.55 |
| 2 | 3862.7 | 2255.9 | 3868.9 | 2.395 | 3.8 | 18.33 |
| 3 | 3851.3 | 2256.9 | 3856.9 | 2.407 | 3.3 | 17.28 |
| 4 | 3849.8 | 2251.9 | 3859.4 | 2.395 | 3.8 | 19.76 |
| 5 | 3844.5 | 2249.6 | 3852.2 | 2.399 | 3.7 | 16.87 |
| 6 | 3857 | 2255.5 | 3865.4 | 2.396 | 3.8 | 15.77 |
Mixture wheel tracking test：
It is 1076 times/mm through testing track test result, is more than 800 times/mm of prescribed requirement.
Claims (10)
1. a kind of cold-mix asphalt, it is characterised in that：It is 1 by weight proportion:The active regeneration additive and the roads 90# of (0.9-1.1)
Oil A grades of road pitch is mixed to prepare,
The active regeneration additive is mixed by the raw material of following mass percent：
The sum of mass percent of each raw material of active regeneration additive is 100%.
2. cold-mix asphalt according to claim 1, which is characterized in that specifically preparation process is：By 90# road oil A
Grade pitch is heated to 140-160 DEG C, is mixed to scale with active regeneration additive at room temperature, cold mixing is obtained after stirring evenly
Pitch.
3. the cold mixing cover mixture based on waste asphalt pavement material, it is characterised in that：By cold mixing material aggregate and claim 1
Or the cold-mix asphalt described in 2 is mixed to prepare according to following weight proportion：
100 parts of cold mixing material aggregate
1-1.5 parts of cold-mix asphalt,
The cold mixing material aggregate includes waste asphalt pavement material.
4. the cold mixing cover mixture according to claim 3 based on waste asphalt pavement material, it is characterised in that：
Cold mixing material aggregate is combined with new premixed aggregate, fine grinding quicklime powder by following weight percent by waste asphalt pavement material
It forms：
Waste asphalt pavement material：80%-90%
New premixed aggregate：10%-20%
Fine grinding quicklime powder：0%-2%
The sum of weight percent of three is 100%.
5. the cold mixing cover mixture according to claim 4 based on waste asphalt pavement material, which is characterized in that waste and old
Asphalt pavement material is sieved into fourth gear material, super grain size portion according to 5mm*5mm, 10mm*10mm, 15*15mm, 20mm*20mm sieve pore
Sub-sieve removes, and the content of non-bituminous surface material is no more than 5% in every grade of waste asphalt pavement material.
6. the cold mixing cover mixture according to claim 5 based on waste asphalt pavement material, which is characterized in that new pre-
Aggregate is mixed to be obtained by following methods premixing：
New by appropriate grain size gathers materials that be heated to material temperature be 160~170 DEG C, newly gather materials through heating and dust removal process after spray and account for
A grades of asphalt of 70# or 90# roads of weight of gathering materials 0.5-1.5% carry out mix, 135-145 DEG C of asphalt heating temperature, mix
Time is not less than 20s；After mix, mix is laid in clean ground, after temperature is down to room temperature, collects mix,
It is broken up to obtain new premixed aggregate with crusher.
7. the cold mixing cover mixture according to claim 6 based on waste asphalt pavement material, which is characterized in that cold mixing
The grading limit of material is synthesized according to the extracting screening result and the screening result that newly gathers materials of waste asphalt pavement material, grade
With ranging from：
Coarse grain formula：Standard mesh 26.5mm percent of pass ranging from 100%；Standard mesh 19.0mm percent of pass ranging from 90~
100%；Standard mesh 16.0mm percent of pass ranging from 80~93%；Standard mesh 13.2mm percent of pass ranging from 68~85%；
Standard mesh 9.5mm percent of pass ranging from 58~75%；Standard mesh 4.75mm percent of pass ranging from 30~60%；Standard mesh
2.36mm percent of pass ranging from 25~50%；Standard mesh 1.18mm percent of pass ranging from 12~35%；Standard mesh 0.3mm is logical
Cross rate ranging from 6~25%；Standard mesh 0.075mm percent of pass ranging from 2~6%；
Or middle grain formula：Standard mesh 16.0mm percent of pass ranging from 100%；Standard mesh 13.2mm percent of pass ranging from 90~
100%；Standard mesh 9.5mm percent of pass ranging from 72~90%；Standard mesh 4.75mm percent of pass ranging from 40~70%；Mark
Quasi- sieve pore 2.36mm percent of pass ranging from 26~55%；Standard mesh 1.18mm percent of pass ranging from 15~38%；Standard mesh
0.3mm percent of pass ranging from 8~23%；Standard mesh 0.075mm percent of pass ranging from 2~7%；
Or particulate formula：Standard mesh 13.2mm percent of pass ranging from 100%；Standard mesh 9.5mm percent of pass ranging from 90~
100%；Standard mesh 4.75mm percent of pass ranging from 50~75%；Standard mesh 2.36mm percent of pass ranging from 32~63%；
Standard mesh 1.18mm percent of pass ranging from 20~48%；Standard mesh 0.3mm percent of pass ranging from 10~25%；Standard mesh
0.075mm percent of pass ranging from 3~8%.
8. the cold mixing cover mixture according to claim 7 based on waste asphalt pavement material, which is characterized in that
For coarse grain formula cold mixing material aggregate, new aggregate size is 10-20mm；
For middle grain formula cold mixing material aggregate, new aggregate size is 10-15mm；
For particulate formula cold mixing material aggregate, new aggregate size is 5-10mm.
9. the cold mixing cover mixture according to claim 3 based on waste asphalt pavement material, which is characterized in that cold mixing
Expect that old bitumen content is 4%-5% in aggregate.
10. the cold mixing cover mixture according to claim 3 based on waste asphalt pavement material, which is characterized in that cold
Mix cover mixture mix needs placement a period of time that can use after the completion, and daily maximum temperature need to be placed 6-8 days less than 5 DEG C；Day
The highest temperature is higher than 5 DEG C, is less than 15 DEG C, need to place 3-5 days；Daily maximum temperature is higher than 15 DEG C, need to place 1-3 days.
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| CN201810113619.1A CN108342091B (en) | 2018-02-05 | 2018-02-05 | Cold-mixed asphalt and cold-mixed overlay mixture based on waste asphalt pavement material |
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|---|---|---|---|
| CN201810113619.1A CN108342091B (en) | 2018-02-05 | 2018-02-05 | Cold-mixed asphalt and cold-mixed overlay mixture based on waste asphalt pavement material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650784A (en) * | 2019-01-28 | 2019-04-19 | 上海时申工贸有限公司 | A kind of asphalt and its production technology |
| CN109881548A (en) * | 2019-02-28 | 2019-06-14 | 山东省交通科学研究院 | Assembled Heavy Traffic pavement of road paving structure based on composite material |
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