CN109626876A - A kind of anticracking bituminous concrete and its preparation process - Google Patents
A kind of anticracking bituminous concrete and its preparation process Download PDFInfo
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- CN109626876A CN109626876A CN201910082610.3A CN201910082610A CN109626876A CN 109626876 A CN109626876 A CN 109626876A CN 201910082610 A CN201910082610 A CN 201910082610A CN 109626876 A CN109626876 A CN 109626876A
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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
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Abstract
The invention discloses a kind of anticracking bituminous concrete and its preparation processes, are related to asphalt concrete technique field, and solving is influenced because of bituminous concrete by ambient temperature variation, and the problem of be easy to happen cracking in use.A kind of anticracking bituminous concrete includes the component of following parts by weight: newly being gathered materials 70~80 parts；5~7 parts of pitch；2~4 parts of miberal powder；8~10 parts of reclaimed asphalt mixture old material；0.3~0.5 part of regenerative agent；0.7~1.4 part of anti-rut agent；0.8~1.2 part of cement；2~6 parts of rubber powder；1.2~1.6 parts of nano montmorillonite.The anticracking bituminous concrete not influence vulnerable to ambient temperature variation in use in the present invention, has good structural strength and stability, and not easy to crack, while preparation process is simple and convenient, obtained anticracking bituminous concrete quality with higher.
Description
Technical field
The present invention relates to asphalt concrete technique field, more specifically, it relates to a kind of anticracking bituminous concrete 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 hot in-plant reclaimed asphalt concrete is disclosed in the Chinese invention patent of Publication No. CN108585619A
Formula and processing technology, the raw material including following parts by weight of component: new 150 parts of aggregate；30 parts of old aggregate；4 parts of miberal powder；Pitch
12 parts；3~6 parts of thermosetting plastics；0~3 part of fumed silica；2 parts of additive.Thermosetting plastics selects styrene-methyl
Methyl acrylate copolymer resin, pitch select SBS modified pitch, and new aggregate respectively includes the bone that 30% partial size is 0~4mm
Material, 40% partial size are the aggregate of 4~8mm, and 30% partial size is the aggregate of 8~12mm.
In above-mentioned patent, just melt by the way that thermosetting plastics particle to be added in bituminous concrete, and most laggard
Row paves, and can integrally improve the heat-resisting ability of asphalt concrete pavement；And silica is dispersed in bituminous concrete, into
The heat-resisting ability of one step enhancing asphalt concrete pavement and ability resistant to chemical etching, but bituminous concrete is in use,
Changed by ambient temperature, and internal aggregate and pitch generates biggish temperature stress because of the difference of warm contracting, leads to pitch
Concrete is easy to happen cracking, it is, therefore, desirable to provide a kind of new scheme solves the above problems.
Summary of the invention
For being influenced in the prior art because of bituminous concrete by ambient temperature variation, and it is easy to happen in use
The problem of cracking, the purpose of the present invention one be to provide a kind of anticracking bituminous concrete, by making rubber powder, nano montmorillonite and again
Play the role of good compound synergic between raw asphalt old material, to solve the above technical problems, in use
It is easy to crack with good structural strength and stability, and not, and there is good quality.
To achieve the above object one, the present invention provides the following technical scheme that
A kind of anticracking bituminous concrete, the component including following parts by weight:
Newly gather materials 70~80 parts；
5~7 parts of pitch；
2~4 parts of miberal powder；
8~10 parts of reclaimed asphalt mixture old material；
0.3~0.5 part of regenerative agent；
0.7~1.4 part of anti-rut agent；
0.8~1.2 part of cement；
2~6 parts of rubber powder；
1.2~1.6 parts of nano montmorillonite.
By using above-mentioned technical proposal, reclaimed asphalt mixture old material is by old asphalt pavement by digging, recycling, break
It is obtained after broken, screening, so that the bituminous pavement removed is reproduced utilization, the originals such as a large amount of pitch, sandstone can be saved
Material, and be conducive to handle waste material, protection environment, there is significant economic benefit and society, environmental benefit.Nano montmorillonite can
Preferably to improve the ageing-resistant performance of pitch, and improve the low-temperature resistance cracking performance of anticracking bituminous concrete, and make anticracking
Bituminous concrete has the ability of good anti-aging property and the anti-deformation of high temperature.
Rubber powder refers to powdered rubber material obtained from waste rubber goods are handled through crushing and processing, can change anti-
The volume shrinkage characteristic for splitting bituminous concrete makes it in the influence changed by ambient temperature, has lesser shrinking percentage, and
Contraction speed slows down, and then anticracking bituminous concrete is made to be not susceptible to crack in use.And rubber powder, nano montmorillonite and
Reclaimed asphalt mixture old material can play good compounding effect, and when anticracking bituminous concrete is sharply shunk, nanometer is covered de-
Soil can generate permanent crack to avoid the inside of anticracking bituminous concrete, and then be not susceptible to out anticracking bituminous concrete
It splits, and rubber powder and nano montmorillonite have the Bituminous concrete surface on reclaimed asphalt mixture old material surface and added pitch directly well
Associativity, substantially increase the crack resistence performance of anticracking bituminous concrete entirety.Meanwhile rubber powder or anticracking bituminous concrete
With stronger cushioning ability and sound absorbing power, effectively reduces the noise of urban transportation and improve the safety of driving
Property.
Miberal powder and cement play filling effect in anticracking bituminous concrete, it is therefore an objective to reduce in anticracking bituminous concrete
The gap in portion keeps the inside of anticracking bituminous concrete more closely knit, and cement can make each component in anticracking bituminous concrete
Between it is stable be adhered to each other, the structural strength for keeping it whole is improved, and is not susceptible to crack.Anti-rut agent not only makes to prevent
It is more closely knit to split bituminous concrete, moreover it is possible to have the function of making the deformed part elasticity on road surface to restore in higher temperature, thus
So that bituminous concrete is not susceptible to deformation and cracking, improves the quality of anticracking bituminous concrete entirety.
Further preferably, the fiber combinations that parts by weight are 4~6 parts are additionally added in the anticracking bituminous concrete
Object, fiber composition mainly include lignin fibre, basalt fibre and polyester fiber, and lignin fibre, basalt fibre
Weight fraction ratio with polyester fiber is 1:(1.2~1.5): (0.5~0.6).
By using above-mentioned technical proposal, lignin fibre is hollow tubular structure, more free pitches can be accommodated, anti-
The effect for primarily serving absorption in bituminous concrete is split, makes anticracking bituminous concrete that there is good toughness, and in use process
In be not susceptible to crack.Basalt fibre and polyester fiber rely primarily on huge specific surface area in fiber surface adsorptive pitch,
Be conducive to improve the high temperature performance of anticracking bituminous concrete entirety, meanwhile, lignin fibre, basalt fibre and polyester fiber
Good fiting effect can be played, and can be using each other and the adsorption capacity of pitch is in anticracking bituminous concrete
Portion forms well stable spatial network, greatly improves the stability of anticracking pitch.
Further preferably, the silicate that parts by weight are 1.6~2.4 parts is additionally added in the anticracking bituminous concrete
Volcanic ash fine powder.
By using above-mentioned technical proposal, Portlandpozzolan fine powder has very strong suction-operated, can be improved anticracking
Binding force between bituminous concrete each component improves the structural strength of anticracking bituminous concrete entirety, and silicate volcano
Grey fine powder changes the interaction of pitch and other components, and makes the Bituminous concrete surface and addition in reclaimed asphalt mixture old material
There is good compatibility between pitch, improve the gelatine degree of pitch in anticracking bituminous concrete, and then drip anticracking
The associativity of green concrete entirety greatly improves, and is not easy to generate crack because of the variation of ambient temperature in use.
Further preferably, the partial size of the reclaimed asphalt mixture old material is 15~25mm.
By using above-mentioned technical proposal, when the partial size of reclaimed asphalt mixture old material is 15~25mm, with newly gather materials and
There is good blending between pitch, when being influenced by temperature change, be not likely to produce shrinkage, obtained anticracking drip
Green concrete has good stable performance, and obtained anticracking bituminous concrete has good anti crack performance.
Further preferably, the cement is the asbestos dandruff of talcum powder, agstone, dolomite dust or threadiness.
By using above-mentioned technical proposal, cement can be filled reclaimed asphalt mixture old material, newly gather materials with pitch it
Between gap in, make anticracking bituminous concrete have good compactness, and cement have good viscosity, anticracking can be made
Stable between each component in bituminous concrete to be adhered to each other, the structural strength for keeping it whole is improved, and is not likely to produce and is split
Seam.
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): (2.5~3.5): (7.5~8.5): 1:(3.5~
4.5)。
By using above-mentioned technical proposal, newly gather materials made of the limestone for selecting particle size different is mixed, it can be with
The colloid net that density is met each other is formed in the inside of anticracking bituminous concrete with reclaimed asphalt mixture old material and pitch, can be coped with
The variation of ambient temperature, making bituminous concrete in actual use has good structural strength.Above-mentioned limestone is pressed
According to (1.5~2.5): (2.5~3.5): (7.5~8.5): 1:(3.5~4.5) ratio mixing, make colloid net in pitch coagulation
The inside of soil has good space structure, and bituminous concrete is made to be not susceptible to crack.
The purpose of the present invention two is to provide a kind of preparation process of anticracking bituminous concrete, using the anti-of this method preparation
Splitting bituminous concrete can adapt to the variation of ambient temperature, and be not susceptible to crack.
To achieve the above object two, the present invention provides following technical solutions, comprising the following steps:
Newly gathering materials for corresponding parts by weight is stirred drying by step 1 in drying bucket, and temperature is controlled at 80~120 DEG C,
Time is 80~120min, and mixing speed is 1000~1500rpm, obtains newly gathering materials for drying；
Step 2, by it is dry newly gather materials sieve, obtain partial size be respectively 0~3mm, 3~5mm, 5~13mm, 13~
The screening material of 20mm, 20~25mm, and according to (1.5~2.5): (2.5~3.5): (7.5~8.5): 1:(3.5~4.5) weight
It measures portion rate to be uniformly mixed, and rubber powder and nano montmorillonite is added, be uniformly mixed together, obtain pretreated mixture；
Pretreated mixture is put into and mixes and stirs in cylinder by step 3, and pitch is heated to 160~180 DEG C, in 30~50s
Even addition is mixed and stirred in cylinder, is stirred, and mixing speed is 1500~1800rpm；
Step 4, after reclaimed asphalt mixture old material is preheated and regenerative agent be added together it is above-mentioned mix and stir in cylinder, stirred
It mixes, mixing speed is 1200~1500rpm, and the time is 30~40min；
Step 5, then miberal powder, anti-rut agent and cement are added in cylinder to mixing and stirring, it is mixed that anticracking pitch can be obtained after mixing
Solidifying soil, and drop temperature is 160~170 DEG C.
By using above-mentioned technical proposal, is dried newly gathering materials, it is avoided to stick between each other due to moisture
Together, and in drying course, part newly gathers materials can be chipping, screens to it, and advantageously ensuring that newly to gather materials has well
Stable partial size proportion, makes anticracking bituminous concrete have good quality.Then gather materials after pitch being heated and newly, regenerate drip
Green mixture old material is mixed and stirred, and drop temperature is made to maintain 160~170 DEG C, is made using anticracking pitch made from the technique
Concrete has good quality, and production efficiency with higher.
Further, the step 3 specifically comprises the following steps, pretreated mixture is put into and is mixed and stirred in cylinder, will
The pitch of 60% parts by weight is heated to 160~180 DEG C, is uniformly added and is mixed and stirred in cylinder in 20~30s, is stirred, stirs
Mixing speed is 1500~1800rpm；
The step 4 specifically comprises the following steps, is added together after reclaimed asphalt mixture old material is preheated with regenerative agent
It is above-mentioned to mix and stir in cylinder, it is stirred, mixing speed is 1200~1500rpm, and the time is 25~30min, adds residue 40%
The pitch of parts by weight is stirred mixing, and mixing speed is 1200~1500rpm, and the time is 10~15min.
By using above-mentioned technical proposal, because aging partially occurs for the old partial size in reclaimed asphalt mixture old material,
It is had differences with the new adsorption capacity that pitch is added, is easy to cause the uniformity of anticracking bituminous concrete poor, and first allow part
Pitch with newly gather materials and first mixed and stirred, then add reclaimed asphalt mixture old material and remaining pitch, be conducive to make newly to collect
The surface of material can more wrap up in the pitch for being attached to addition, and it is more equal that the pitch in anticracking bituminous concrete can be made to be distributed
It is even.
Further, the step 2 specifically includes, and dry newly gathering materials is removed via electromagnet exclusion device
Then magnetic impurity is sieved again, obtain particle size range be respectively 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~
The screening material of 25mm, and according to (1.5~2.5): (2.5~3.5): (7.5~8.5): 1:(3.5~4.5) weight fraction ratio
It is uniformly mixed, and miberal powder, rubber powder and nano montmorillonite is added, be uniformly mixed together, obtain pretreated mixture.
By using above-mentioned technical proposal, will newly gather materials in the magnetic impurity that contains, such as iron oxide inhales by electromagnet
Attached Screening Treatment can not only reduce the impurity content in anticracking bituminous concrete, moreover it is possible to improve each group in anticracking bituminous concrete
/ bond strength, and then improve the structural strength of anticracking bituminous concrete entirety, and be not susceptible to be broken.
In conclusion compared with prior art, the invention has the following advantages:
(1) rubber powder can change the volume shrinkage characteristic of anticracking bituminous concrete, and nano montmorillonite can make anticracking pitch coagulation
The low-temperature resistance cracking performance of soil improves, and has significant economic benefit and society, Environmental Effect using reclaimed asphalt mixture old material
Benefit, and rubber powder, nano montmorillonite and reclaimed asphalt mixture old material can play good compounding effect, make anticracking pitch coagulation
Soil is not easy to crack because of the variation of ambient temperature in use；
(2) fiber composition being made of lignin fibre, basalt fibre and polyester fiber is added, anticracking can not only be improved
The crack resistence performance of bituminous concrete entirety, additionally it is possible to which between utilization and the adsorption capacity of pitch is in anticracking bituminous concrete
Inside form well stable spatial network, greatly improve the stability of anticracking pitch；
(3) first allow part pitch with newly gather materials and first mixed and stirred, then add reclaimed asphalt mixture old material and remaining drip
Blueness is conducive to the surface for enabling newly to gather materials and more wraps up in the pitch for being attached to addition, and can make the drip in anticracking bituminous concrete
Blueness is distributed more uniform, and then greatly improves the crack resistence performance of anticracking bituminous concrete entirety.
Detailed description of the invention
Fig. 1 is the preparation technology flow chart of anticracking bituminous concrete 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 anticracking bituminous concrete, each component and its corresponding parts by weight are as shown in table 1, and by such as
Lower step prepares:
Newly gathering materials for corresponding parts by weight is stirred drying in drying bucket by step 1, and temperature is controlled at 100 DEG C, the time
For 80min, mixing speed 1000rpm, newly gathering materials for drying is obtained；
Step 2, by it is dry newly gather materials sieve, obtain particle size range be 0~3mm, 3~5mm, 5~13mm, 13~
The screening material of 20mm, 20~25mm, and be uniformly mixed according to the weight fraction ratio of 2:3:8:1:4, and rubber powder and nanometer illiteracy is added
De- soil, is uniformly mixed together, obtains pretreated mixture；
Pretreated mixture is put into and mixes and stirs in cylinder by step 3, and pitch is heated to 180 DEG C, is uniformly added and mixes in 30s
It in cylinder, is stirred, mixing speed 1800rpm, time 20min；
Step 4, after reclaimed asphalt mixture old material is preheated and regenerative agent be added together it is above-mentioned mix and stir in cylinder, stirred
It mixes, mixing speed 1500rpm, time 30min；
Step 5, then miberal powder, anti-rut agent and talcum powder are added in cylinder to mixing and stirring, it is mixed that anticracking pitch can be obtained after mixing
Solidifying soil, and drop temperature is 170 DEG C.
Note: in above-mentioned steps newly gathering materials by particle size range be 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~
The limestone of 25mm be by ratio of weight and the number of copies 2:3:8:1:4 composition, and its by limestone raw material successively through 3mm, 5mm, 13mm,
The sieve of 20mm and 25mm sieves, and the partial size of reclaimed asphalt mixture old material is 15mm.Regenerative agent selects Shanghai ten thousand according to fine
The bitumen regenerant of model WSG-S29 in Chemical Co., Ltd., pitch select in petrochemical industry 70#A grade asphalt, Rut resistance
The anti-rut agent that the trade mark is YL-5000 in Yancheng City Yin Li fiber Science and Technology Ltd. is selected in agent.
Embodiment 2-8: a kind of anticracking bituminous concrete, difference from example 1 is that, each component and its corresponding weight
Number is as shown in table 1.
Each component and its parts by weight in 1 embodiment 1-8 of table
Embodiment 9: a kind of anticracking bituminous concrete, difference from example 1 is that, it is described newly to gather materials mainly by partial size model
Enclose for the limestone of 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~25mm is 1.5:2.5:7.5 by ratio of weight and the number of copies:
1:3.5.
Embodiment 10: a kind of anticracking bituminous concrete, difference from example 1 is that, it is described newly gather materials mainly by
Particle size range is 0~3mm, the limestone of 3~5mm, 5~13mm, 13~20mm, 20~25mm are 2.5 by ratio of weight and the number of copies:
3.5:8.5:1:4.5.
Embodiment 11: a kind of anticracking bituminous concrete, difference from example 1 is that, the regeneration asphalt mixing
The partial size for expecting old material is 25mm.
Embodiment 12: a kind of anticracking bituminous concrete, difference from example 1 is that, the regeneration asphalt mixing
The partial size for expecting old material is 20mm.
Embodiment 13: a kind of anticracking bituminous concrete, difference from example 1 is that, step 2 specifically include as
Lower step sieves dry newly gathering materials, and obtaining particle size range is 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20
The screening material of~25mm, and according to the weight fraction ratio of 2:3:8:1:4 be uniformly mixed, and be added parts by weight be 2 parts rubber powder,
1.6 parts of nano montmorillonite and 4 parts of fiber composition, the lignin that fiber composition is 1:1.2:0.6 by weight fraction ratio
Fiber, basalt fibre and polyester fiber composition, are then uniformly mixed together, obtain pretreated mixture.
Embodiment 14: a kind of anticracking bituminous concrete, difference from example 1 is that, step 2 specifically include as
Lower step sieves dry newly gathering materials, and obtaining particle size range is 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20
The screening material of~25mm, and according to the weight fraction ratio of 2:3:8:1:4 be uniformly mixed, and be added parts by weight be 2 parts rubber powder,
1.6 parts of nano montmorillonite and 5 parts of fiber composition, the lignin that fiber composition is 1:1.5:0.5 by weight fraction ratio
Fiber, basalt fibre and polyester fiber composition, are then uniformly mixed together, obtain pretreated mixture.
Embodiment 15: a kind of anticracking bituminous concrete, difference from example 1 is that, step 2 specifically include as
Lower step sieves dry newly gathering materials, and obtaining particle size range is 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20
The screening material of~25mm, and according to the weight fraction ratio of 2:3:8:1:4 be uniformly mixed, and be added parts by weight be 2 parts rubber powder,
1.6 parts of nano montmorillonite and 6 parts of fiber composition, fiber composition are the wooden of 1:1.35:0.55 by weight fraction ratio
Cellulose fiber, basalt fibre and polyester fiber composition, are then uniformly mixed together, obtain pretreated mixture.
Embodiment 16: a kind of anticracking bituminous concrete, with embodiment 15 the difference is that, step 5 specifically include as
Lower step, then parts by weight are added in cylinder as 2 parts of miberal powder, 0.7 part of anti-rut agent, 1.2 parts of talcum powder and 1.6 to mixing and stirring
Anticracking bituminous concrete can be obtained in the Portlandpozzolan fine powder of part after mixing, and drop temperature is 170 DEG C.
Embodiment 17: a kind of anticracking bituminous concrete, difference from example 1 is that, step 5 specifically include as
Lower step, then parts by weight are added in cylinder as 2 parts of miberal powder, 0.7 part of anti-rut agent, 1.2 parts of talcum powder and 2.4 to mixing and stirring
Anticracking bituminous concrete can be obtained in the Portlandpozzolan fine powder of part after mixing, and drop temperature is 170 DEG C.
Embodiment 18: a kind of anticracking bituminous concrete, difference from example 1 is that, step 5 specifically include as
Lower step, then parts by weight are added in cylinder as 2 parts of miberal powder, 0.7 part of anti-rut agent, 1.2 parts of talcum powder and 2 parts to mixing and stirring
Portlandpozzolan fine powder, can be obtained anticracking bituminous concrete after mixing, and drop temperature is 170 DEG C.
Embodiment 19: a kind of anticracking bituminous concrete, difference from example 1 is that, step 5 specifically include as
Lower step, then to mix and stir in cylinder be added parts by weight be 2 parts of miberal powder, 0.7 part of anti-rut agent and 1.2 parts of agstone,
Anticracking bituminous concrete can be obtained after mixing, and drop temperature is 170 DEG C.
Embodiment 20: a kind of anticracking bituminous concrete, difference from example 1 is that, step 5 specifically include as
Lower step, then parts by weight are added in cylinder as 2 parts of miberal powder, 0.7 part of anti-rut agent and 1.2 parts of fibrous asbestos to mixing and stirring
Anticracking bituminous concrete can be obtained in dandruff after mixing, and drop temperature is 170 DEG C.
Embodiment 21: a kind of anticracking bituminous concrete, difference from example 1 is that, step 5 specifically include as
Lower step, then to mix and stir in cylinder be added parts by weight be 2 parts of miberal powder, 0.7 part of anti-rut agent and 1.2 parts of dolomite dust,
Anticracking bituminous concrete can be obtained after mixing, and drop temperature is 170 DEG C.
Embodiment 22: a kind of anticracking bituminous concrete, difference from example 1 is that, the step 3 is specifically wrapped
Following steps are included, pretreated mixture is put into and is mixed and stirred in cylinder, the pitch of 60% parts by weight is heated to 180 DEG C, in 25s
Uniform be added is mixed and stirred in cylinder, is stirred, mixing speed 1800rpm；
The step 4 specifically comprises the following steps, is added together after reclaimed asphalt mixture old material is preheated with regenerative agent
It is above-mentioned to mix and stir in cylinder, it is stirred, mixing speed 1500rpm, time 30min, adds the drip of remaining 40% parts by weight
Blueness is stirred mixing, mixing speed 1500rpm, time 15min.
Embodiment 23: a kind of anticracking bituminous concrete, difference from example 1 is that, the step 2 is specifically wrapped
Following steps are included, dry newly gathering materials is removed magnetic impurity via electromagnet exclusion device, is then sieved, is obtained again
The screening that particle size range is 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~25mm is obtained to pretreated mixture
Material, and be uniformly mixed according to the weight fraction ratio of 2:3:8:1:4, and miberal powder, rubber powder and nano montmorillonite is added, mixing is equal together
It is even, obtain pretreated mixture.
Comparative example 1: a kind of anticracking bituminous concrete, difference from example 1 is that, step 2 specifically includes as follows
Step, by it is dry newly gather materials sieve, obtain particle size range be 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~
The screening material of 25mm, and be uniformly mixed according to the weight fraction ratio of 2:3:8:1:4, and nano montmorillonite is added, mixing is equal together
It is even, obtain pretreated mixture.
Comparative example 2: a kind of anticracking bituminous concrete, difference from example 1 is that, step 2 specifically includes as follows
Step, by it is dry newly gather materials sieve, obtain particle size range be 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~
The screening material of 25mm, and be uniformly mixed according to the weight fraction ratio of 2:3:8:1:4, and rubber powder is added, it is uniformly mixed, obtains together
Pretreated mixture.
Comparative example 3: a kind of anticracking bituminous concrete, difference from example 1 is that, step 2 specifically includes as follows
Step, by it is dry newly gather materials sieve, obtain particle size range be 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~
The screening material of 25mm, and be uniformly mixed according to the weight fraction ratio of 2:3:8:1:4, obtain pretreated mixture.
Comparative example 4: a kind of anticracking bituminous concrete, difference from example 1 is that, especially by following steps
It is made:
Newly gathering materials for corresponding parts by weight is stirred drying in drying bucket by step 1, and temperature is controlled at 100 DEG C, the time
For 80min, mixing speed 1000rpm, newly gathering materials for drying is obtained；
Step 2, by it is dry newly gather materials sieve, obtain particle size range be 0~3mm, 3~5mm, 5~13mm, 13~
The screening material of 20mm, 20~25mm, and be uniformly mixed according to the weight fraction ratio of 2:3:8:1:4, obtain pretreated mixture；
Pretreated mixture is put into and mixes and stirs in cylinder by step 3, and pitch is heated to 180 DEG C, is uniformly added and mixes in 30s
It in cylinder, is stirred, mixing speed 1800rpm, time 20min；
Step 4, then miberal powder, anti-rut agent and talcum powder are added in cylinder to mixing and stirring, it is mixed that anticracking pitch can be obtained after mixing
Solidifying soil, and drop temperature is 170 DEG C.
Fracture property test
Test specimen: using the anticracking bituminous concrete obtained in embodiment 1-23 as test specimen 1-23, using comparative example
The anticracking bituminous concrete obtained in 1-4 is as control sample 1-4.
Test method: the anticracking bituminous concrete selected in test specimen 1-23 and control sample 1-4 makes standard sample,
The size of standard sample is 4cm × 4cm × 8cm, and test temperature is 0 DEG C, and the collector measurement of ASMB6-60 ess-strain is selected to answer
Power, the components of strain measure the strain energy density of every piece of standard sample by existing strain energy density function calculation method, and
Test specimen 1-23 and control sample 1-4 are respectively corresponded, is made a record.
Test result: the test result of test specimen 1-23 and control sample 1-4 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 1-4 can obtain, and rubber powder and nano montmorillonite can make anticracking bituminous concrete
Low-temperature resistance cracking performance improve, and rubber powder, nano montmorillonite and reclaimed asphalt mixture old material can play good compounding
Effect greatly improves the stability of anticracking bituminous concrete.By the test result of test specimen 1-8 and test specimen 13-15
Comparison can obtain, and the fiber composition being made of lignin fibre, basalt fibre and polyester fiber is added, makes anticracking pitch coagulation
The anti crack performance of soil greatly improves.It can be obtained by the comparison of the test result of test specimen 15 and test specimen 16-18, silicate volcano
Grey fine powder can be such that the associativity of anticracking bituminous concrete entirety greatly improves, and be not easy the change because of ambient temperature in use
Change and generates crack.It can be obtained by the comparison of the test result of test specimen 1-8 and test specimen 22,23, first allow part pitch and new
Gather materials and first mixed and stirred, then adds reclaimed asphalt mixture old material and remaining pitch, and carry out except magnetic to newly gathering materials,
The overall performance of anticracking bituminous concrete can be improved.
The test result of table 2 test specimen 1-23 and control sample 1-4
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 (9)
1. a kind of anticracking bituminous concrete, which is characterized in that the component including following parts by weight:
Newly gather materials 70~80 parts；
5~7 parts of pitch；
2~4 parts of miberal powder；
8~10 parts of reclaimed asphalt mixture old material；
0.3~0.5 part of regenerative agent；
0.7~1.4 part of anti-rut agent；
0.8~1.2 part of cement；
2~6 parts of rubber powder；
1.2~1.6 parts of nano montmorillonite.
2. anticracking bituminous concrete according to claim 1, which is characterized in that be additionally added in the anticracking bituminous concrete
Having parts by weight is 4~6 parts of fiber composition, and fiber composition mainly includes lignin fibre, basalt fibre and polyester
Fiber, and the weight fraction ratio of lignin fibre, basalt fibre and polyester fiber is 1:(1.2~1.5): (0.5~0.6).
3. anticracking bituminous concrete according to claim 1, which is characterized in that be additionally added in the anticracking bituminous concrete
Having parts by weight is 1.6~2.4 parts of Portlandpozzolan fine powder.
4. anticracking bituminous concrete according to claim 1, which is characterized in that the grain of the reclaimed asphalt mixture old material
Diameter is 15~25mm.
5. anticracking bituminous concrete according to claim 1, which is characterized in that the cement is talcum powder, lime stone
The asbestos dandruff of powder, dolomite dust or threadiness.
6. anticracking bituminous concrete 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): (2.5
~3.5): (7.5~8.5): 1:(3.5~4.5).
7. a kind of preparation process of anticracking bituminous concrete as described in claim 1, which comprises the following steps:
Newly gathering materials for corresponding parts by weight is stirred drying by step 1 in drying bucket, and temperature is controlled at 80~120 DEG C,
Time is 80~120min, and mixing speed is 1000~1500rpm, obtains newly gathering materials for drying；
Step 2 sieves dry newly gathering materials, and obtaining particle size range is respectively 0~3mm, 3~5mm, 5~13mm, 13
The screening material of~20mm, 20~25mm, and according to (1.5~2.5): (2.5~3.5): (7.5~8.5): 1:(3.5~4.5)
Weight fraction ratio is uniformly mixed, and rubber powder and nano montmorillonite is added, and is uniformly mixed together, is obtained pretreated mixture；
Pretreated mixture is put into and mixes and stirs in cylinder by step 3, and pitch is heated to 160~180 DEG C, in 30~50s
Even addition is mixed and stirred in cylinder, is stirred, and mixing speed is 1500~1800rpm；
Step 4, after reclaimed asphalt mixture old material is preheated and regenerative agent be added together it is above-mentioned mix and stir in cylinder, stirred
It mixes, mixing speed is 1200~1500rpm, and the time is 30~40min；
Step 5, then miberal powder, anti-rut agent and cement are added in cylinder to mixing and stirring, it is mixed that anticracking pitch can be obtained after mixing
Solidifying soil, and drop temperature is 160~170 DEG C.
8. the preparation process of anticracking bituminous concrete according to claim 7, which is characterized in that the step 3 is specifically wrapped
Following steps are included, pretreated mixture is put into and is mixed and stirred in cylinder, the pitch of 60% parts by weight is heated to 160~180 DEG C,
It is uniformly added and is mixed and stirred in cylinder in 20~30s, is stirred, mixing speed is 1500~1800rpm；
The step 4 specifically comprises the following steps, is added together after reclaimed asphalt mixture old material is preheated with regenerative agent
It is above-mentioned to mix and stir in cylinder, it is stirred, mixing speed is 1200~1500rpm, and the time is 25~30min, adds remaining 40% weight
The pitch for measuring part is stirred mixing, and mixing speed is 1200~1500rpm, and the time is 10~15min.
9. the preparation process of anticracking bituminous concrete according to claim 8, which is characterized in that the step 2 is specifically wrapped
It includes, dry newly gathering materials is removed magnetic impurity via electromagnet exclusion device, is then sieved again, obtains partial size model
The screening material of respectively 0~3mm, 3~5mm, 5~13mm, 13~20mm, 20~25mm are enclosed, and according to (1.5~2.5): (2.5
~3.5) weight fraction ratio: (7.5~8.5): 1:(3.5~4.5) is uniformly mixed, and miberal powder, rubber powder and nanometer is added and covers and takes off
Soil is uniformly mixed together, obtains pretreated mixture.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN112876138A (en) * | 2021-01-25 | 2021-06-01 | 南京朝科路桥工程技术有限公司 | Ultrathin overlay asphalt concrete and preparation method thereof |
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 |
| CN106746930A (en) * | 2017-02-10 | 2017-05-31 | 南京高佳路桥工程有限公司 | High additive heated tool butt-welding asphalt and preparation method thereof |
-
2019
- 2019-01-28 CN CN201910082610.3A patent/CN109626876A/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 |
| CN106746930A (en) * | 2017-02-10 | 2017-05-31 | 南京高佳路桥工程有限公司 | High additive heated tool butt-welding asphalt and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 张骞文等: "《长安大学研究生学术论文集2014年卷》", 30 June 2015, 陕西科学技术出版社 * |
| 杨泽清: "蒙脱土/废胶粉复合改性沥青的制备与性能", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 陈梓宁等: "火山灰与橡胶粉复合改性沥青混合料的研究", 《道路工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN112876138A (en) * | 2021-01-25 | 2021-06-01 | 南京朝科路桥工程技术有限公司 | Ultrathin overlay asphalt concrete and preparation method thereof |
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