CN110002796A - A kind of Recycled Asphalt Pavement and its preparation process - Google Patents
A kind of Recycled Asphalt Pavement and its preparation process Download PDFInfo
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- CN110002796A CN110002796A CN201910218392.1A CN201910218392A CN110002796A CN 110002796 A CN110002796 A CN 110002796A CN 201910218392 A CN201910218392 A CN 201910218392A CN 110002796 A CN110002796 A CN 110002796A
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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
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The invention discloses a kind of Recycled Asphalt Pavement and its preparation processes, are related to asphalt concrete technique field, solve because new, old asphalt concrete is poor in spliced associativity, its stitching portion is caused to summarize the problem of being easy to produce crack in use process.A kind of Recycled Asphalt Pavement comprising the component of following parts by weight: newly gather materials 72~80 parts；4~6 parts of SBS modified pitch；0.2~0.4 part of miberal powder；Regeneration asphalt mixes 20~24 parts of old material；0.12~0.16 part of regenerative agent；6~8 parts of steel slag；2.4~4.6 parts of sintering metal powder porous material；0.08~0.14 part of pitch defoaming agent CI-1814；4~8 parts of fiberfill；3~7 parts of reinforcing filler.Recycled Asphalt Pavement in the present invention has good bond strength when being applied to road construction between old asphalt concrete, and is not likely to produce crack in use, and making road integrally has good service life.
Description
Technical field
The present invention relates to asphalt concrete technique field, more specifically, it relates to a kind of Recycled Asphalt Pavement and its
Preparation process.
Background technique
Bituminous concrete is commonly called as bitumen concrete, and artificial selection has the mineral aggregate of certain gradation composition, rubble or grating gravel, stone
Bits or sand, miberal powder etc., with a certain proportion of bitumen for road use material, the mixture made of mixing under the conditions of strict control.
A kind of bituminous concrete and its production work are disclosed in the Chinese invention patent of Publication No. CN109095828A
Skill, bituminous concrete are made of the raw material comprising following weight: 13~25wt% of modified pitch, 6~15wt% of cement, gathering materials 46
1~5wt% of~63wt%, 16~33wt% of filler and auxiliary agent；Preparation method are as follows: weigh each component original by setting ratio
Load weighted modified pitch is heated to 180~190 DEG C by material, spare；By cement, gather materials, filler and auxiliary agent are uniformly mixed,
Obtain mixture；Modified pitch after heating is added in mixture, 1~2min is stirred at 160~190 DEG C, can be obtained
To bituminous concrete.
In above-mentioned patent, bituminous concrete can be used for asphalt concrete road construction, has and reduces the excellent of pavement cracking
Point, but during road pavement, needs for new bituminous concrete and old bituminous concrete to be combined, due to it is new,
Associativity between old asphalt concrete is poor, causes its stitching portion to be summarized in use process and is easy to produce crack, and then causes
Road bulk life time substantially reduces, it is, therefore, desirable to provide a kind of new scheme solves the above problems.
Summary of the invention
For because new, old asphalt concrete is poor in spliced associativity, its stitching portion being caused to make in the prior art
Summarized the problem of being easy to produce crack with process, the purpose of the present invention one is to provide a kind of Recycled Asphalt Pavement, by adding
Enter sintering metal powder porous material, and play good fiting effect with fiberfill, reinforcing filler, to solve above-mentioned technology
Problem has good bond strength between old asphalt concrete when being laid with, and is not likely to produce crack in use.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of Recycled Asphalt Pavement, the component including following parts by weight:
Newly gather materials 72~80 parts；
4~6 parts of SBS modified pitch；
0.2~0.4 part of miberal powder；
Regeneration asphalt mixes 20~24 parts of old material；
0.12~0.16 part of regenerative agent；
6~8 parts of steel slag；
2.4~4.6 parts of sintering metal powder porous material；
Pitch defoaming agent CI-18140.08~0.14 part；
4~8 parts of fiberfill；
3~7 parts of reinforcing filler.
By using above-mentioned technical proposal, regeneration asphalt mixing old material is by old asphalt pavement by digging, recycling, break
It is obtained after broken, screening, but the pitch in regeneration asphalt mixing old material will appear different journeys during prolonged use
The aging of degree, and regenerative agent is added, the compatibility of pitch can be improved, improve the needle penetration and ductility of pitch entirety.Steel slag is
One of steelmaking process by-product, intensity is higher, rough surface, wear-resisting and durability are good, and has good temperature variation resistant
Performance greatly improves the overall quality of Recycled Asphalt Pavement.Meanwhile miberal powder plays filling in Recycled Asphalt Pavement and makees
With, it is therefore an objective to reduce the hole of Recycled Asphalt Pavement, and asphalt mastic is collectively formed in miberal powder and pitch, improves regeneration asphalt
The strength and stability of concrete.Pitch defoaming agent CI-1814 can be avoided the producing bubbles inside of Recycled Asphalt Pavement, make
Recycled Asphalt Pavement can be fitted closely when being laid between the old asphalt concrete on road.
Sintering metal powder porous material uses metal or alloy powder for raw material, is a kind of by molding and high temperature sintering
It forms, the porous material with rigid structure.Contain a large amount of connections or semi-connected in the inside of sintering metal powder porous material
Gap, pore structure is formed by the powder particle stacking of regular and irregular, with good plasticity and impact flexibility, and with
There is good bond strength between pitch, enable close in splicing between Recycled Asphalt Pavement and old asphalt concrete
Fitting, and it is not likely to produce crack in use.
Fiberfill and wear resistant filler are good filler, have good fillibility and wearability, and chemically-resistant is rotten
Corrosion can be strong, and Recycled Asphalt Pavement can be made to have good quality.Meanwhile few fibers filler and wear resistant filler can fill
In the inside aperture of sintering metal powder porous material, when the old asphalt concrete on Recycled Asphalt Pavement and road carries out
When splicing, partially sintering metal powder porous material can be embedded in the Bituminous concrete surface of old asphalt concrete, and fill out few fibers
Material and wear resistant filler are embedded together in the Bituminous concrete surface of old asphalt concrete, make Recycled Asphalt Pavement and old asphalt concrete it
Between bond strength in splicing greatly improve, and in use, stitching portion is also less prone to crack, and then makes road
The whole service life greatly improves.
Further preferably, the function additive that parts by weight are 2~5 parts is additionally added in the Recycled Asphalt Pavement,
Function additive mainly includes vinylacetate, polyacrylate and hydrogenated rosin resin, and vinylacetate, polyacrylate and
The weight fraction ratio of hydrogenated rosin resin is (0.4~0.8): 1:(1.2~1.6).
By using above-mentioned technical proposal, vinylacetate refers generally to vinyl acetate, can be with vinyl chloride, acrylonitrile, fourth
The high molecular synthetic material of different performance is made in olefin(e) acid, acrylic acid, vinyl monomer energy copolymerized grafting, block etc.；And polyacrylic acid
Ester is a kind of good adhesive, is capable of forming good luster and water-fast film；Hydrogenated rosin resin is a kind of good tackifier,
Improve adhesive strength between the pitch in Recycled Asphalt Pavement and adherend material；And it is added by vinylacetate, polypropylene
The function additive of acid esters and hydrogenated rosin resin composition, can play the role of good compound synergic, and then keep regeneration asphalt mixed
Bond strength between solidifying soil and old asphalt concrete greatly improves.
Further preferably, the whisker that parts by weight are 1.5~3.5 parts is additionally added in the Recycled Asphalt Pavement to fill out
Material, whisker fillers select one of magnesium carbonate whisker, silicon carbide whisker, alumina whisker and magnesium borate crystal whisker or a variety of.
By using above-mentioned technical proposal, whisker is the staple fiber of the micro/nano level as made of high-purity crystal growth, carbon
Sour magnesium whisker, silicon carbide whisker, alumina whisker and magnesium borate crystal whisker have good whisker fillers, with regeneration asphalt coagulation
There is good compatibility between each component raw material in soil, and there is good high temperature resistance, abrasion resistance properties and resistance toization
Corrosive nature is learned, higher integral strength, greatly improves the overall quality of Recycled Asphalt Pavement.Meanwhile whisker fillers is straight
Diameter is very small, is easily embedded into old asphalt concrete, so can also improve Recycled Asphalt Pavement and old asphalt concrete it
Between bond strength.
Further preferably, the fiberfill selects glass fibre, polyester fiber, lignin fibre, brucite fiber
With one of sepiolite fibre or a variety of.
By using above-mentioned technical proposal, glass fibre, polyester fiber, lignin fibre, brucite fiber and sepiolite
Fiber tool is good fiberfill, and has good fillibility in Recycled Asphalt Pavement, makes Recycled Asphalt Pavement
With good compactness and structural strength.Meanwhile fiberfill also has the excellent spy such as corrosion-resistant, anti-radiation, insulation, heat-insulated
Property, and there is good associativity, and net can be formed in the inside of antiseepage Recycled Asphalt Pavement between fiberfill and pitch
Shape structure, and then make Recycled Asphalt Pavement that there is good quality.
Further preferably, the reinforcing filler selects glass microballoon, silicon powder, nanometer calcium carbonate, carbon black and nanometer kaolinite
One of soil is a variety of.
By using above-mentioned technical proposal, glass microballoon, silicon powder, nanometer calcium carbonate, carbon black and nano kaoline are good
Good reinforcing filler, has a good dispersibility in Recycled Asphalt Pavement, and with each component in Recycled Asphalt Pavement
Between there is good associativity, the structural strength of Recycled Asphalt Pavement can not only be improved, moreover it is possible to keep regeneration asphalt mixed
Solidifying soil keeps good stability in use, and then makes road integrally and have longer service life.
Further preferably, it is described newly gather materials mainly by particle size range be 0~3mm, 3~5mm, 5~13mm, 13~
20mm, 20~25mm limestone be by ratio of weight and the number of copies (1.5~2.5): (2.3~3.3): (7.4~8.0): 1:(3.2~
4.2) it forms.
By using above-mentioned technical proposal, there is good associativity between limestone and SBS modified pitch, is not easy because outer
The acute variation of boundary's temperature leads to the decrease of its boundary strength, makes Recycled Asphalt Pavement in use and has and is good steady
It is qualitative.The limestone composition of different-grain diameter size is selected newly to gather materials, making newly to gather materials mixes the modified drip of old material, SBS with regeneration asphalt
Blueness forms the colloid net that density is met each other in the inside of Recycled Asphalt Pavement, and is conducive to that conductive carbon fibre is made uniformly to scatter
Come, and porous ceramics and diatomite is made to form stable open pores in Recycled Asphalt Pavement, and then keeps regeneration asphalt mixed
Solidifying soil keeps good quality.
Further preferably, regeneration asphalt mixing old material be mainly 0~8mm by particle size range, 8~15mm, 15~
The old asphalt concrete of 25mm is (0.8~1.2): 1:(0.4~0.6 by ratio of weight and the number of copies) composition.
By using above-mentioned technical proposal, the old asphalt concrete of different-grain diameter size is selected, and is formed by different proportion
Regeneration asphalt mixes old material, can make regeneration asphalt mixing old material and newly gather materials, has good combination between SBS modified pitch
Property, and the regeneration asphalt mixing old material of variable grain size can form stable disperse system in newly gathering materials, when on highway
When being laid with Recycled Asphalt Pavement, its entirety is set to be not susceptible to crack, and be able to maintain good integrality.
The purpose of the present invention two is to provide a kind of preparation process of Recycled Asphalt Pavement, be prepared again using the technique
Raw bituminous concrete, has good bond strength when being laid with, and be not easy in use between old asphalt concrete
Generate crack.
To achieve the above object two, the present invention provides following technical solutions, comprising the following steps:
Step 1, by newly the gathering materials of corresponding parts by weight, steel slag, fiberfill and reinforcing filler are stirred baking in drying bucket
Dry, at 80~120 DEG C, the time is 20~30min for temperature control, and mixing speed is 800~1200rpm, obtains dry mixing
Material；
Dry mixture is put into and mixes and stirs in cylinder by step 2, and the SBS modified pitch of 60~70% parts by weight is heated to
It 150~170 DEG C, is uniformly added and is mixed and stirred in cylinder in 20~30s, is stirred, mixing speed is 900~1200rpm；
Step 3, by regeneration asphalt mix old material preheated after and regenerative agent be added together it is above-mentioned mix and stir in cylinder, be stirred,
It mixes and stirs cylinder temperature and maintains 160~170 DEG C, mixing speed is 800~1200rpm, and the time is 25~30min, is added surplus
The SBS modified pitch and sintering metal powder porous material of remaining parts by weight, are stirred mixing, and mixing speed is 600~
800rpm, time are 10~15min；
Step 4, then miberal powder and pitch defoaming agent CI-1814 are added in cylinder to mixing and stirring, regeneration asphalt can be obtained after mixing
Concrete, and drop temperature is 160~170 DEG C.
It by using above-mentioned technical proposal, will newly gather materials, steel slag, fiberfill and reinforcing filler carry out drying mixing, keep away
Exempt from it to be sticked together due to moisture between each other, makes Recycled Asphalt Pavement that there is good quality.And first allow part SBS
Modified pitch with newly gather materials and first mixed and stirred, then add after preheating and and the reclaimed asphalt mixture that mixes of regenerative agent it is old
Material, finally adds remaining SBS modified pitch, and sintering metal powder porous material is added at this moment, not only contributes to make
The surface newly to gather materials can more be wrapped up in and be attached to SBS modified pitch, moreover it is possible to keep sintering metal powder porous material uniform
It is distributed in Recycled Asphalt Pavement, finally adds miberal powder and pitch defoaming agent CI-1814, the regeneration asphalt enabled to
Concrete has good quality.
In conclusion compared with prior art, the invention has the following advantages:
(1) sintering metal powder porous material is added, is conducive to make the old asphalt concrete on Recycled Asphalt Pavement and road
It fits closely, and few fibers filler and wear resistant filler can be filled in the inside aperture of sintering metal powder porous material, and
When point sintering metal powder porous material is embedded in the Bituminous concrete surface of old asphalt concrete, few fibers filler can be made and wear-resisting filled out
Material is embedded together in the Bituminous concrete surface of old asphalt concrete, is made between Recycled Asphalt Pavement and old asphalt concrete in splicing
Bond strength greatly improve, and during prolonged use, stitching portion is not easy to produce crack；
(2) function additive being made of vinylacetate, polyacrylate and hydrogenated rosin resin is added, can play good
Compound synergic effect is conducive to make to have between old asphalt concrete on the pitch in Recycled Asphalt Pavement and road surface good
Adhesive strength, and then greatly improve the bond strength between Recycled Asphalt Pavement and old asphalt concrete；
(3) whisker fillers are added, not only greatly improve the overall quality of Recycled Asphalt Pavement, moreover it is possible to by by whisker fillers
It is embedded into old asphalt concrete, and then can also improves the bond strength between Recycled Asphalt Pavement and old asphalt concrete.
Detailed description of the invention
Fig. 1 is the process flow chart of Recycled Asphalt Pavement in the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
Embodiment 1: a kind of Recycled Asphalt Pavement, each component and its corresponding parts by weight are as shown in table 1, and by such as
Lower step prepares:
Step 1, by newly the gathering materials of corresponding parts by weight, steel slag, lignin fibre and glass microballoon are stirred in drying bucket
Drying, temperature control obtain dry mixture at 100 DEG C, time 25min, mixing speed 1200rpm；
Dry mixture is put into and mixes and stirs in cylinder by step 2, and the SBS modified pitch of 60% parts by weight is heated to 170 DEG C,
It is uniformly added and is mixed and stirred in cylinder in 30s, is stirred, mixing speed 900rpm；
Step 3, by regeneration asphalt mix old material carry out after being preheated to 80 DEG C and regenerative agent be added together it is above-mentioned mix and stir in cylinder, into
Row stirring, mixes and stirs cylinder temperature and maintains 170 DEG C, mixing speed 900rpm, time 30min, adds remaining 40% weight
The SBS modified pitch and sintering metal powder porous material for measuring part, are stirred mixing, mixing speed 800rpm, and the time is
15min；
Step 4, then miberal powder and pitch defoaming agent CI-1814 are added in cylinder to mixing and stirring, regeneration asphalt can be obtained after mixing
Concrete, and drop temperature is 170 DEG C.
Note: newly gathering materials in above-mentioned steps mainly is 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20 by particle size range
The limestone of~25mm be by ratio of weight and the number of copies 2:2.8:7.7:1:3.7 composition, by limestone raw material successively through 3mm, 5mm,
The sieve of 13mm, 20mm and 25mm sieve.Regeneration asphalt mix old material mainly by particle size range be 0~8mm, 8~15mm, 15~
The old asphalt concrete of 25mm be by ratio of weight and the number of copies 1:1:0.5 composition, by old asphalt concrete raw material successively through 8mm,
The sieve of 15mm and 25mm sieves.Regenerative agent selects Shanghai ten thousand according to the pitch of model WSG-S29 in Fine Chemical Co., Ltd
Regenerative agent.Pitch defoaming agent CI-1814 is purchased from Fine Chemical Co., Ltd federal in Guangdong.
Embodiment 2-8: a kind of Recycled Asphalt Pavement, difference from example 1 is that, each component and its corresponding
Parts by weight are as shown in table 1.
Each component and its parts by weight in 1 embodiment 1-8 of table
Embodiment 9: a kind of Recycled Asphalt Pavement, difference from example 1 is that, newly gather materials mainly is by particle size range
0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~25mm limestone be by ratio of weight and the number of copies 1.5:2.3:7.4:1:
3.2 composition.
Embodiment 10: a kind of Recycled Asphalt Pavement, difference from example 1 is that, newly gather materials mainly by partial size
Range is 0~3mm, the limestone of 3~5mm, 5~13mm, 13~20mm, 20~25mm are 2.5:3.3 by ratio of weight and the number of copies:
8.0:1:4.2 composition.
Embodiment 11: a kind of Recycled Asphalt Pavement, difference from example 1 is that, regeneration asphalt mixes old material
Mainly be 0~8mm by particle size range, the old asphalt concrete of 8~15mm, 15~25mm are 0.8:1:0.4 by ratio of weight and the number of copies
Composition.
Embodiment 12: a kind of Recycled Asphalt Pavement, difference from example 1 is that, regeneration asphalt mixes old material
Mainly be 0~8mm by particle size range, the old asphalt concrete of 8~15mm, 15~25mm are 1.2:1:0.6 by ratio of weight and the number of copies
Composition.
Embodiment 13: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 1 is specifically configured to,
By corresponding parts by weight be 72 parts newly gather materials, 8 parts of steel slag, 4 parts of polyester fiber and 7 parts of glass microballoon are in drying bucket
It is stirred drying, temperature control obtains dry mixture at 100 DEG C, time 25min, mixing speed 1200rpm.
Embodiment 14: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 1 is specifically configured to,
It is 72 parts newly gather materials, 8 parts of steel slag, 2 parts of brucite fiber, 2 parts of sepiolite fibre and 7 parts by corresponding parts by weight
Glass microballoon is stirred drying in drying bucket, and temperature is controlled at 100 DEG C, time 25min, mixing speed 1200rpm,
Obtain dry mixture.
Embodiment 15: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 1 is specifically configured to,
By corresponding parts by weight be 72 parts newly gather materials, 8 parts of steel slag, 4 parts of lignin fibre and 7 parts of nanometer calcium carbonate are being dried
Drying is stirred in bucket, temperature, which is controlled, obtains dry mixing at 100 DEG C, time 25min, mixing speed 1200rpm
Material.
Embodiment 16: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 1 is specifically configured to,
It is 72 parts newly gather materials, 8 parts of steel slag, 4 parts of lignin fibre, 3 parts of nano kaoline and 4 parts by corresponding parts by weight
Silicon powder is stirred drying in drying bucket, and temperature control is obtained at 100 DEG C, time 25min, mixing speed 1200rpm
Dry mixture.
Embodiment 17: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 3 is specifically configured to,
By regeneration asphalt mix old material carry out after being preheated to 80 DEG C and regenerative agent be added together it is above-mentioned mix and stir in cylinder, be stirred, mix and stir
Cylinder temperature maintains 170 DEG C, mixing speed 900rpm, time 30min, and the SBS for adding remaining 40% parts by weight changes
Property pitch, 2.4 parts of sintering metal powder porous material and 3.5 parts of function additive, function additive are by weight fraction ratio
Vinylacetate, polyacrylate and the hydrogenated rosin resin composition of 0.6:1:1.4, is stirred mixing, mixing speed is
800rpm, time 15min.
Embodiment 18: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 3 is specifically configured to,
By regeneration asphalt mix old material carry out after being preheated to 80 DEG C and regenerative agent be added together it is above-mentioned mix and stir in cylinder, be stirred, mix and stir
Cylinder temperature maintains 170 DEG C, mixing speed 900rpm, time 30min, and the SBS for adding remaining 40% parts by weight changes
Property pitch, 2.4 parts of sintering metal powder porous material and 5 parts of function additive, function additive by weight fraction ratio be 0.4:
The vinylacetate of 1:1.2, polyacrylate and hydrogenated rosin resin composition, are stirred mixing, mixing speed 800rpm,
Time is 15min.
Embodiment 19: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 3 is specifically configured to,
By regeneration asphalt mix old material carry out after being preheated to 80 DEG C and regenerative agent be added together it is above-mentioned mix and stir in cylinder, be stirred, mix and stir
Cylinder temperature maintains 170 DEG C, mixing speed 900rpm, time 30min, and the SBS for adding remaining 40% parts by weight changes
Property pitch, 2.4 parts of sintering metal powder porous material and 2 parts of function additive, function additive by weight fraction ratio be 0.8:
The vinylacetate of 1:1.6, polyacrylate and hydrogenated rosin resin composition, are stirred mixing, mixing speed 800rpm,
Time is 15min.
Embodiment 20: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 1 is specifically configured to,
It is 72 parts newly gather materials, 8 parts of steel slag, 4 parts of lignin fibre, 7 parts of glass microballoon and 2.5 parts by corresponding parts by weight
Whisker fillers are stirred drying in drying bucket, and whisker fillers select silicon carbide whisker, and temperature control is in 100 DEG C, time
25min, mixing speed 1200rpm obtain dry mixture.
Embodiment 21: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 1 is specifically configured to,
It is 72 parts newly gather materials, 8 parts of steel slag, 4 parts of lignin fibre, 7 parts of glass microballoon and 2.5 parts by corresponding parts by weight
Whisker fillers are stirred drying in drying bucket, and whisker fillers select alumina whisker, and temperature control is in 100 DEG C, time
25min, mixing speed 1200rpm obtain dry mixture.
Embodiment 22: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 1 is specifically configured to,
It is 72 parts newly gather materials, 8 parts of steel slag, 4 parts of lignin fibre, 7 parts of glass microballoon and 2.5 parts by corresponding parts by weight
Whisker fillers are stirred drying, the magnesium carbonate whisker and magnesium borate crystal whisker of the quality such as whisker fillers selection, temperature in drying bucket
Degree control obtains dry mixture at 100 DEG C, time 25min, mixing speed 1200rpm.
Comparative example 1: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 1 is specifically configured to,
It is 72 parts newly gather materials drying to be stirred in drying bucket with 8 parts of steel slag by corresponding parts by weight, temperature control is 100
DEG C, time 25min, mixing speed 1200rpm obtain dry mixture.
Comparative example 2: a kind of Recycled Asphalt Pavement, difference from example 1 is that, step 3 is specifically configured to,
By regeneration asphalt mix old material carry out after being preheated to 80 DEG C and regenerative agent be added together it is above-mentioned mix and stir in cylinder, be stirred, mix and stir
Cylinder temperature maintains 170 DEG C, mixing speed 900rpm, time 30min, and the SBS for adding remaining 40% parts by weight changes
Property pitch, is stirred mixing, mixing speed 800rpm, time 15min.
Comparative example 3: a kind of Recycled Asphalt Pavement, the difference is that, step 3 is specifically configured to comparative example 1,
By regeneration asphalt mix old material carry out after being preheated to 80 DEG C and regenerative agent be added together it is above-mentioned mix and stir in cylinder, be stirred, mix and stir
Cylinder temperature maintains 170 DEG C, mixing speed 900rpm, time 30min, and the SBS for adding remaining 40% parts by weight changes
Property pitch, is stirred mixing, mixing speed 800rpm, time 15min.
Performance test
Test specimen: using the Recycled Asphalt Pavement obtained in embodiment 1-22 as test specimen 1-22, using comparative example
The Recycled Asphalt Pavement obtained in 1-3 is as control sample 1-3.
Test method: selecting application publication number is the Chinese invention patent of CN109095828A, the wherein drip of embodiment one
Green concrete, and mark is made according to the regulation in " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTJ052-2000)
Bituminous concrete standard sample is carried out aging 8h by quasi- sample in constant temperature ageing oven, and temperature is 60 DEG C, then will test
Sample 1-22 and control sample 1-3 is by " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) respectively by pitch coagulation
Native standard sample is adhered to each other with Recycled Asphalt Pavement, and test test block is obtained after curing molding.Use electronic universal tester
Measure bituminous concrete standard sample and regeneration asphalt coagulation in the corresponding test test block of test specimen 1-22 and control sample 1-3
Bonding strength between soil.
Test result: the test result of test specimen 1-22 and control sample 1-3 are as shown in table 2.As shown in Table 2, by trying
The test result comparison for testing sample 1-8 and control sample 1-3 can obtain, and sintering metal powder porous material is added or few fibers are filled out
Material and wear resistant filler are all conducive to improve bonding strength, and when it is used in mixed way, can make Recycled Asphalt Pavement and Bituminous concrete surface
Bonding strength between concrete in splicing greatly improves.By the test result pair of test specimen 9-16 and test specimen 1-8
Than that can obtain, it is disclosed in this invention newly gather materials, regeneration asphalt mixing old material, fiberfill and reinforcing filler, be suitable for regeneration
The preparation of bituminous concrete.It can be obtained, be added by acetic acid second by the comparison of the test result of test specimen 17-19 and test specimen 1-8
The function additive of enester, polyacrylate and hydrogenated rosin resin composition, can make Recycled Asphalt Pavement and Bituminous concrete surface coagulation
Bonding strength between soil greatly improves.It can be obtained, be added by the comparison of the test result of test specimen 20-22 and test specimen 1-8
The bonding strength between Recycled Asphalt Pavement and old asphalt concrete can be improved in whisker fillers, but promotes effect and compare function
Energy auxiliary agent is weaker.
The test result of table 2 test specimen 1-22 and control sample 1-3
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of Recycled Asphalt Pavement, which is characterized in that the component including following parts by weight:
Newly gather materials 72~80 parts；
4~6 parts of SBS modified pitch；
0.2~0.4 part of miberal powder；
Regeneration asphalt mixes 20~24 parts of old material；
0.12~0.16 part of regenerative agent；
6~8 parts of steel slag；
2.4~4.6 parts of sintering metal powder porous material；
0.08~0.14 part of pitch defoaming agent CI-1814；
4~8 parts of fiberfill；
3~7 parts of reinforcing filler.
2. Recycled Asphalt Pavement according to claim 1, which is characterized in that be additionally added in the Recycled Asphalt Pavement
Having parts by weight is 2~5 parts of function additive, and function additive mainly includes vinylacetate, polyacrylate and hydrogenated rosin
Resin, and the weight fraction ratio of vinylacetate, polyacrylate and hydrogenated rosin resin is (0.4~0.8): 1:(1.2~
1.6).
3. Recycled Asphalt Pavement according to claim 1, which is characterized in that be additionally added in the Recycled Asphalt Pavement
Having parts by weight is 1.5~3.5 parts of whisker fillers, and whisker fillers select magnesium carbonate whisker, silicon carbide whisker, alumina whisker
With one of magnesium borate crystal whisker or a variety of.
4. Recycled Asphalt Pavement according to claim 1, which is characterized in that the fiberfill selection glass fibre,
One of polyester fiber, lignin fibre, brucite fiber and sepiolite fibre are a variety of.
5. Recycled Asphalt Pavement according to claim 1, which is characterized in that the reinforcing filler selection glass microballoon,
One of silicon powder, nanometer calcium carbonate, carbon black and nano kaoline are a variety of.
6. Recycled Asphalt Pavement according to claim 1, which is characterized in that described newly to gather materials and be mainly by particle size range
0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~25mm limestone be by ratio of weight and the number of copies (1.5~2.5): (2.3
~3.3) it: (7.4~8.0): 1:(3.2~4.2) forms.
7. Recycled Asphalt Pavement according to claim 1, which is characterized in that regeneration asphalt mixing old material mainly by
Particle size range is 0~8mm, the old asphalt concrete of 8~15mm, 15~25mm are (0.8~1.2) by ratio of weight and the number of copies: 1:
(0.4~0.6) it forms.
8. a kind of preparation process of Recycled Asphalt Pavement as described in claim 1, which comprises the following steps:
Step 1, by newly the gathering materials of corresponding parts by weight, steel slag, fiberfill and reinforcing filler are stirred baking in drying bucket
Dry, at 80~120 DEG C, the time is 20~30min for temperature control, and mixing speed is 800~1200rpm, obtains dry mixing
Material；
Dry mixture is put into and mixes and stirs in cylinder by step 2, and the SBS modified pitch of 60~70% parts by weight is heated to 150
It~170 DEG C, is uniformly added and is mixed and stirred in cylinder in 20~30s, is stirred, mixing speed is 900~1200rpm；
Step 3, by regeneration asphalt mix old material preheated after and regenerative agent be added together it is above-mentioned mix and stir in cylinder, be stirred,
It mixes and stirs cylinder temperature and maintains 160~170 DEG C, mixing speed is 800~1200rpm, and the time is 25~30min, is added surplus
The SBS modified pitch and sintering metal powder porous material of remaining parts by weight, are stirred mixing, and mixing speed is 600~
800rpm, time are 10~15min；
Step 4, then miberal powder and pitch defoaming agent CI-1814 are added in cylinder to mixing and stirring, regeneration asphalt can be obtained after mixing
Concrete, and drop temperature is 160~170 DEG C.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110903052A (en) * | 2019-11-26 | 2020-03-24 | 宏辉建材有限公司 | Rubber asphalt mixture and preparation method thereof |
| CN110981287A (en) * | 2019-12-25 | 2020-04-10 | 江苏中新苏通市政工程有限公司 | High-binding-property recycled asphalt concrete and preparation process thereof |
| CN111018409A (en) * | 2019-12-24 | 2020-04-17 | 江苏中新苏通市政工程有限公司 | Recycled asphalt concrete and preparation process thereof |
| CN111153633A (en) * | 2020-01-09 | 2020-05-15 | 江苏中新苏通市政工程有限公司 | Anti-cracking asphalt concrete and preparation process thereof |
| CN111995286A (en) * | 2020-09-07 | 2020-11-27 | 济南金曰公路工程有限公司 | Old asphalt pavement regeneration additive, method for preparing regenerated asphalt pavement mixture by using old asphalt pavement regeneration additive and preparation method of regenerated asphalt pavement mixture |
| CN112430009A (en) * | 2020-11-25 | 2021-03-02 | 宁波东兴沥青制品有限公司 | Recycled asphalt concrete and preparation method thereof |
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| CN113264749A (en) * | 2021-05-28 | 2021-08-17 | 上海宝新特种沥青混凝土有限公司 | Anti-crack asphalt mixture and preparation method thereof |
| CN113402204A (en) * | 2021-07-28 | 2021-09-17 | 张家港市吉达市政路桥工程有限公司 | Steel slag asphalt concrete, preparation method thereof, pavement and construction method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786257A (en) * | 2012-08-20 | 2012-11-21 | 北京建筑工程学院 | Plant-mixed thermally-modified asphalt regenerated mix and preparation method thereof |
| CN109265076A (en) * | 2018-09-08 | 2019-01-25 | 平湖市中建沥青混凝土工程有限公司 | A kind of rubber asphalt concrete and its preparation process |
-
2019
- 2019-03-21 CN CN201910218392.1A patent/CN110002796A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786257A (en) * | 2012-08-20 | 2012-11-21 | 北京建筑工程学院 | Plant-mixed thermally-modified asphalt regenerated mix and preparation method thereof |
| CN109265076A (en) * | 2018-09-08 | 2019-01-25 | 平湖市中建沥青混凝土工程有限公司 | A kind of rubber asphalt concrete and its preparation process |
Non-Patent Citations (3)
| Title |
|---|
| 李灿华等: "《钢渣处理及资源化利用技术》", 30 June 2016, 中国地质大学出版社 * |
| 牛伯羽等: "《土木工程材料》", 31 January 2019, 中国质检出版社/中国标准出版社 * |
| 黄明杰等: "硫酸钙晶须在道路沥青中的应用综述", 《石油沥青》 * |
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| CN111018409A (en) * | 2019-12-24 | 2020-04-17 | 江苏中新苏通市政工程有限公司 | Recycled asphalt concrete and preparation process thereof |
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| CN112430009B (en) * | 2020-11-25 | 2021-08-20 | 宁波东兴沥青制品有限公司 | Recycled asphalt concrete and preparation method thereof |
| CN112430009A (en) * | 2020-11-25 | 2021-03-02 | 宁波东兴沥青制品有限公司 | Recycled asphalt concrete and preparation method thereof |
| CN112645642A (en) * | 2020-12-22 | 2021-04-13 | 宁波北仑鸿通工程建设有限公司 | Anti-cracking asphalt concrete and preparation method thereof |
| CN112645642B (en) * | 2020-12-22 | 2021-12-28 | 宁波北仑鸿通工程建设有限公司 | Anti-cracking asphalt concrete and preparation method thereof |
| CN113264749A (en) * | 2021-05-28 | 2021-08-17 | 上海宝新特种沥青混凝土有限公司 | Anti-crack asphalt mixture and preparation method thereof |
| CN113402204A (en) * | 2021-07-28 | 2021-09-17 | 张家港市吉达市政路桥工程有限公司 | Steel slag asphalt concrete, preparation method thereof, pavement and construction method |
| CN113480240A (en) * | 2021-08-06 | 2021-10-08 | 广东水电二局股份有限公司 | Asphalt concrete and preparation method thereof |
| CN113480240B (en) * | 2021-08-06 | 2022-05-03 | 广东水电二局股份有限公司 | Asphalt concrete and preparation method thereof |
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