CN108298873A - A kind of inhibition asphalt pavement reflective cracking material and preparation method thereof - Google Patents
A kind of inhibition asphalt pavement reflective cracking material and preparation method thereof Download PDFInfo
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- CN108298873A CN108298873A CN201810201749.0A CN201810201749A CN108298873A CN 108298873 A CN108298873 A CN 108298873A CN 201810201749 A CN201810201749 A CN 201810201749A CN 108298873 A CN108298873 A CN 108298873A
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- Prior art keywords
- inhibition
- polyester fiber
- asphalt pavement
- aggregate
- rut
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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
-
- 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
-
- 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 present invention relates to technical field of road engineering, disclose a kind of inhibition asphalt pavement reflective cracking material, and the mass fraction of raw material components includes：10 15 parts of modified asphalt binders, 25 parts of anti-rut agent, 36 parts of polyester fiber, 80 90 parts of aggregate.In addition, the invention also discloses a kind of method preparing above-mentioned inhibition asphalt pavement reflective cracking material, step includes：A. weighing weighs four kinds of material components by quality proportioning；B. it once mixes and stirs, by modified asphalt binders and anti-rut agent mix；C. two mixs, the mixture mix that the aggregate after advance heating is prepared with step B；D. it mixes and stirs three times, polyester fiber is added into the mixture of step C and continues to stir；E. it is molded, the mixture of step D mixs is poured into fixed template, packed after cooling.Product form of the present invention is moderate, and preparation process is simple, and form of construction work is quick, caking property, compatibility are good, can effectively develop reflection crack and postpone, extend the service life on road surface.
Description
Technical field
The present invention relates to technical field of road engineering, and in particular to a kind of inhibition asphalt pavement reflective cracking material and its system
Preparation Method.
Background technology
Now current 90% or more highway is all made of semi-rigid structure, since semi-rigid type base has intensity
Height, the good advantage of anti-fatigue performance, water stability, substantially has become the standard configuration of China's expressway design at present.But
In terms of the investigation situation of current China's major part express highway pavement disease, the location that reflection crack occurs in bituminous paving all exists
The phenomenon that Semi-rigid Road Base Course crack, this point are clearly distinguishable from Flexible Base, on the one hand analysis reason has been half just
Property base design it is improper cause the later stage to generate temperature shrinkage, drying shrinkage or self-constriction, further aspect is that office of work progress base
Portion's compactness is insufficient or the consolidation settlement of ground later stage, so as to cause the generation in the crack and asphalt surface course reflection crack of base.
To solve the problems, such as that reflection crack disease occurs in current China's express highway pavement, most basic countermeasure is exactly to base
Layer is rooted out and re-starts making, and such processing is tantamount to new pavement, and not only difficulty of construction is big, and the period is long, and from economy
On from the point of view of it is also unreasonable.For these reasons, the reflection crack occurred for China's asphalt pavement of highway is mainly adopted at present
Processing method is exactly the asphalt reperfusion class at substrate surface overlay crushed stone sealing stress absorbing layer, middle cutting optimal reflection crack
Material is laid with Fibergrass polyester mat or geotextile etc..Above-mentioned handle measure reduce to a certain extent base's early crack and
Asphalt pavement reflective cracking generates, and however as the passage of time, the crack or existing reflection crack that are generated by base still can
Continue to occur in asphalt surface course, it is contemplated that Asphalt Pavement Damage occurs unavoidable.
Based on the above-mentioned analysis to China's asphalt pavement of highway reflection crack producing cause and treatment Countermeasures, existing city
Traditional crack treatment material can not fundamentally solve a series of problems that reflection crack is brought on field, therefore in order to reduce height
The occurrence probability of fast road layer reflection crack, extends the service life of highway, develops a kind of Expressway Asphalt road
Face inhibits reflection crack material extremely urgent.
Described continuous grading in the present invention：Refer to a set of regulations screen size standard screen to a certain Mineral Aggregate into
When row mesh analysis, obtained grading curve is a smooth curve, has continuous lines, is had between the pellet of adjacent grade certain
Proportionate relationship, this descending, each grade particle has, and in mass ratio example collocation composition Mineral Aggregate, referred to as
Continuous grading mixture.
Invention content
The invention is intended to provide a kind of inhibition asphalt pavement reflective cracking material, to reduce highway face layer reflection crack
Occurrence probability, extend the service life of highway.
In order to achieve the above objectives, basic technology scheme of the invention is as follows：A kind of inhibition asphalt pavement reflective cracking material,
The mass fraction of its raw material components includes：10-15 parts of modified asphalt binders, 2-5 parts of anti-rut agent, 3-6 parts of polyester fiber, bone
80-90 parts of material.
The principle and advantage of this programme be：Anti-rut agent can improve the high-temperature stability of material, and polyester fiber can carry
The crack resistance of high material, aggregate can improve the stability and intensity of material entirety, and what can effectively be concentrated at discrete flaw answers
Anti-rut agent, polyester fiber and aggregate are fully bonded formation one also with the bonding effect of modified pitch so that anti-by power
Rut agent, polyester fiber and aggregate are distributed in material, further increase the overall performance of material.Modified pitch and anti-rut agent
After composite modified, there is higher softening point and good low temperature ductility, can effectively inhibit the development of reflection crack.It is added
Polyester fiber tool therein is with three-dimensional network fractions distribution in cementitious matter so that mixture is uniformly distributed in three-dimensional structure, increases
Strong material bears effect to stress, improves the cracking resistance of mixture.The collective effect of above-mentioned each component material, can be with
The effective further infiltration and development for inhibiting reflection cracking in a pavement, extends the service life of highway.
Preferably, as an improvement, modified asphalt binders are one in SBS modified pitch or rubber powder modified asphalt
Kind.It so, it is possible to make modified pitch that there is stronger bonding effect, ensure the globality between mixture, keep the property of material
It can stablize.
Preferably, as an improvement, 25 DEG C of needle penetration P of modified asphalt binders(25 DEG C, 100g, 5s)60~80
(0.1mm), softening point >=60 DEG C, 25 DEG C of elasticity restore >=65%.Such modified pitch has preferable elasticity, can be to stress
It is effectively buffered, avoids stress excessive and lead to the generation of reflection crack.
Preferably, as an improvement, anti-rut agent is in RA anti-rut agents, PR anti-rut agents or Domix anti-rut agents
One kind.The anti-rut agent of selection can ensure there is good high-temperature stability, to ensure the stabilization of material structure.
Preferably, as an improvement, anti-rut agent grain size is 1-2mm.Using the Rut resistance within the scope of this granular size
Agent can ensure the excellent bonds with other mixtures, reduce the gap between material, keep material closely knit, to ensure that material has
There is stronger stress degree.
Preferably, as an improvement, polyester fiber a diameter of 20 ± 5um, fibre length 6-10mm, tensile strength >=
260 DEG C of 500Mpa, elongation at break ＞ 15%, fusing point ＞.The tensile strength and elongation at break of such polyester fiber are higher, make
Obtain polyester fiber has stronger crack resistance, ensures the integrally-built stabilization of material.
Preferably, as an improvement, aggregate size 1-5mm, grain composition is continuous, wherein size be 2.36mm,
The percent of pass of the sieve pore of 0.6mm, 0.15mm, 0.075mm is successively respectively in 35-45%, 25-30%, 14-24%, 5-10%.Such as
This, can ensure the stability and intensity of material entirety, the stress that can effectively concentrate at discrete flaw.
In addition, the present invention also provides a kind of methods preparing above-mentioned inhibition asphalt pavement reflective cracking material, including with
Lower operating procedure：
A. weighing weighs four kinds of modified pitch structure material, anti-rut agent, polyester fiber, aggregate raw material groups by quality proportioning
Part；
B. it once mixes and stirs, modified asphalt binders and anti-rut agent is put into malaxation device, in 165 DEG C~185 DEG C temperature
It is lower to fully mix 30-45min using the mix axis of malaxation device；
The aggregate for being previously heated to 180 DEG C -200 DEG C is put into malaxation device by C. two mixs, is prepared with step B mixed
Object mix is closed, mix temperature is 200 DEG C -220 DEG C, duration of mixing 60-120s；
D. it mixes and stirs three times, polyester fiber is added into the mixture of step C and continues to stir 30-40s, until polyester fiber fills
It is uniformly dispersed；
E. it is molded, the mixture of step D mixs is poured into fixed template, wait for that its temperature is down to room temperature, be then charged into
In packaging bag, that is, forms bituminous paving and inhibit reflection crack material.
The present invention reflection cracking in a pavement material composition it is moderate, preparation process is simple, and form of construction work is quick, this product and
Caking property, compatibility between levels asphalt is good, for will can effectively be reflected at asphalt pavement reflective cracking
Crack progressing postpone 4-6, extend the service life on road surface, greatly reduce the bituminous paving later stage maintenance cost, with compared with
Big economic benefit.
Description of the drawings
Fig. 1 is the structure chart of the mix axis used in the embodiment of the present invention 1.
Fig. 2 is the side view of paddle in Fig. 1.
Specific implementation mode
Below by specific implementation mode, the present invention is described in further detail：
Reference numeral in Figure of description includes：Interior central siphon 1, outer tube 2, hollow ball 3, master gear 4, shaft 5, stirring
Leaf 6, side gear 7, fan 8, through-hole 9, magazine 10, rubber elastic layer 11, wind chamber 12.
Embodiment 1
A kind of inhibition asphalt pavement reflective cracking material, the mass fraction of raw material components include：Modified asphalt binders
12kg, anti-rut agent 4kg, polyester fiber 5kg, aggregate 90kg.
Wherein modified asphalt binders are SBS modified asphalt binders, 25 DEG C of needle penetrations of modified asphalt binders
P(25 DEG C, 100g, 5s)In 60~80 (0.1mm), softening point >=60 DEG C, 25 DEG C of elasticity restore >=65%.
Wherein anti-rut agent is RA anti-rut agents, and grain size is 1mm.
The wherein a diameter of 20 ± 5um of polyester fiber, fibre length 6-10mm, tensile strength >=500Mpa, extension at break
260 DEG C of rate ＞ 15%, fusing point ＞.
Wherein aggregate size 1-5mm, aggregate clean dried, grain composition is continuous, wherein size be 2.36mm, 0.6mm,
The percent of pass of the sieve pore of 0.15mm, 0.075mm respectively is 35%, 30%, 24%, 5%.
The material is made of following preparation methods：
A. weighing weighs four kinds of SBS modified pitch structures material, RA anti-rut agents, polyester fiber, aggregate originals by quality proportioning
Material；
B. it once mixes and stirs, SBS modified asphalt binders and RA anti-rut agents is put into malaxation device, at a temperature of 165 DEG C
45min is fully mixed using the mix axis of malaxation device；The structure of the mix axis is as shown in Figure 1：
Including interior central siphon 1, interior central siphon 1 is weldingly fixed on the inner wall of malaxation device mix chamber, and 1 outer cover of interior central siphon is equipped with outer
Casing 2,2 belt of outer tube are connected with motor, and outer tube 2 is rotatably connected on by bearing on malaxation device, the lower part one of outer tube 2
Body is welded with hollow ball 3, and master gear 4 is stretched into hollow ball 3 and be welded in the lower end of interior central siphon 1, on the side wall of hollow ball 3
Two shafts 5 are rotatably connected to by bearing, it is in " ten " that one end of two shafts 5, which is welded with section as shown in Figure 2,
The paddle 6 of font, 5 other end of shaft, which is stretched into hollow ball 3 and is keyed, is fixed with side gear 7, and side gear 7 is engaged on
On master gear 4, and fan 8 is welded on side gear 7.The lower part of interior central siphon 1 is equipped with through-hole 9, and the upper end of interior central siphon 1 is welded
It is connected to magazine 10, the bottom wall right part of magazine 10 is provided with feed opening, and rubber elastic layer 11, rubber elastic layer 11 are equipped in magazine 10
Left end be bonded on the left side wall of magazine 10, right end is bonded on the left end of feed opening, rubber elastic layer 11 and magazine 10
Wind chamber 12 is formed between bottom wall, the upper end of interior central siphon 1 is stretched in air-inlet chamber 12 and is welded and fixed with the bottom wall of magazine 10.
When mix, material is put into magazine 10, starts motor, motor drives outer tube 2 to rotate by belt, outer tube
2 drive the hollow ball 3 of welding to rotate so that two shafts 5 on hollow ball 3 follow movement and revolved around the axis of outer tube 2
Turn, the paddle 6 that shaft 5 connects follows movement and rotated around outer tube 2, to carry out lateral mix to material.While two
A side gear 7 constantly engages during following shaft 5 to move on master gear 4, to which rotation occur, and passes through shaft 5
It drives paddle 6 that rotation occurs around the axis of shaft 5, longitudinal mixing is carried out to the material in malaxation device with this.Pass through stirring
The vertical and horizontal of leaf 6 mix so that each material is evenly distributed with.Paddle 6 is arranged to " ten " font structure and increases to material
Mixing area, be conducive to uniform stirring.Using the structure of hollow ball, one side hollow ball can preferably accommodate master gear and side tooth
Wheel etc. structures, be convenient for each structure connection campaign, the round and smooth no dead angle in outer surface of another aspect hollow ball, when material drop down onto it is hollow
When on ball, the uniform of material can be conducive to along the smooth surface natural downslide of material, to prevent material sticks on hollow ball
Mixing.
While side gear 7 rotates, the fan 8 being fixedly connected on side gear 7 follows rotation, when fan 8 and interior central siphon 1
When 9 face of through-hole of lower part, the air-flow that fan 8 is blown out is blown by through-hole 9 in interior central siphon 1, and blows air-inlet chamber 12 along interior central siphon 1
Interior, being filled with for air-flow causes rubber elastic layer 11 to heave upwards, to push the material in magazine 10 to right side and by feed opening
It leaks into progress auto feed stirring in malaxation device.
The aggregate for being previously heated to 180 DEG C is put into malaxation device, with reference to a mix step with step by C. two mixs
Mixture mix prepared by rapid B, mix temperature are 200 DEG C, duration of mixing 120s；
D. it mixes and stirs three times, with reference to a mix step, polyester fiber is added into the mixture of step C and continues to stir 30s,
Until polyester fiber is fully dispersed uniformly；
E. it is molded, the mixture of step D mixs is poured into fixed template, wait for that its temperature is down to room temperature, be then charged into
In packaging bag, that is, forms bituminous paving and inhibit reflection crack material.
Embodiment 2
A kind of inhibition asphalt pavement reflective cracking material, the mass fraction of raw material components include：Modified asphalt binders
15kg, anti-rut agent 3kg, polyester fiber 6kg, aggregate 85kg.
Wherein modified asphalt binders are rubber powder modified asphalt binder, 25 DEG C of needle penetrations of modified asphalt binders
P(25 DEG C, 100g, 5s)In 60~80 (0.1mm), softening point >=60 DEG C, 25 DEG C of elasticity restore >=65%.
Wherein anti-rut agent is PR anti-rut agents, and grain size is 1mm.
The wherein a diameter of 20 ± 5um of polyester fiber, fibre length 6-10mm, tensile strength >=500Mpa, extension at break
260 DEG C of rate ＞ 15%, fusing point ＞.
Wherein aggregate size 1-5mm, aggregate clean dried, grain composition is continuous, wherein size be 2.36mm, 0.6mm,
The percent of pass of the sieve pore of 0.15mm, 0.075mm respectively is 38%, 28%, 22%, 6%.
The material is made of following preparation methods：
A. weighing weighs rubber powder modified asphalt structure material, PR anti-rut agents, polyester fiber, aggregate four by quality proportioning
Kind raw material；
B. it once mixes and stirs, rubber powder modified asphalt binder and PR anti-rut agents is put into malaxation device, in 170 DEG C of temperature
It is lower to fully mix 40min using the mix axis of malaxation device；
The aggregate for being previously heated to 185 DEG C is put into malaxation device, with reference to a mix step with step by C. two mixs
Mixture mix prepared by rapid B, mix temperature are 205 DEG C, duration of mixing 100s；
D. it mixes and stirs three times, with reference to a mix step, polyester fiber is added into the mixture of step C and continues to stir 33s,
Until polyester fiber is fully dispersed uniformly；
E. it is molded, the mixture of step D mixs is poured into fixed template, wait for that its temperature is down to room temperature, be then charged into
In packaging bag, that is, forms bituminous paving and inhibit reflection crack material.
Embodiment 3
A kind of inhibition asphalt pavement reflective cracking material, the mass fraction of raw material components include：Modified asphalt binders
10kg, anti-rut agent 4kg, polyester fiber 4kg, aggregate 85kg.
Wherein modified asphalt binders are SBS modified asphalt binders, 25 DEG C of needle penetration P of modified asphalt binders(25℃,
100g, 5s) in 60~80 (0.1mm), softening point >=60 DEG C, 25 DEG C of elasticity recoveries >=65%.
Wherein anti-rut agent is Domix anti-rut agents, and grain diameter is 1mm.
The wherein a diameter of 20 ± 5um of polyester fiber, fibre length 6-10mm, tensile strength >=500Mpa, extension at break
260 DEG C of rate ＞ 15%, fusing point ＞.
Wherein aggregate size 1-5mm, aggregate clean dried, grain composition is continuous, wherein size be 2.36mm, 0.6mm,
The percent of pass of the sieve pore of 0.15mm, 0.075mm respectively is 40%, 28%, 20%, 8%.
The material is made of following preparation methods：
A. weighing weighs SBS modified pitch structures material, Domix anti-rut agents, polyester fiber, aggregate four by quality proportioning
Kind raw material；
B. it once mixes and stirs, SBS modified asphalt binders and Domix anti-rut agents is put into malaxation device, in 175 DEG C of temperature
It is lower to fully mix 38min using the mix axis of malaxation device；
The aggregate for being previously heated to 190 DEG C is put into malaxation device, with reference to a mix step with step by C. two mixs
Mixture mix prepared by rapid B, mix temperature are 210 DEG C, duration of mixing 80s；
D. it mixes and stirs three times, with reference to a mix step, polyester fiber is added into the mixture of step C and continues to stir 36s,
Until polyester fiber is fully dispersed uniformly；
E. it is molded, the mixture of step D mixs is poured into fixed template, wait for that its temperature is down to room temperature, be then charged into
In packaging bag, that is, forms bituminous paving and inhibit reflection crack material.
Embodiment 4
A kind of inhibition asphalt pavement reflective cracking material, the mass fraction of raw material components include：Modified asphalt binders
14kg, anti-rut agent 2kg, polyester fiber 6kg, aggregate 80kg.
Wherein modified asphalt binders are SBS modified asphalt binders, 25 DEG C of needle penetration P of modified asphalt binders(25℃,
100g, 5s) in 60~80 (0.1mm), softening point >=60 DEG C, 25 DEG C of elasticity recoveries >=65%.
Wherein anti-rut agent is PR anti-rut agents, and grain diameter is 2mm.
The wherein a diameter of 20 ± 5um of polyester fiber, fibre length 6-10mm, tensile strength >=500Mpa, extension at break
260 DEG C of rate ＞ 15%, fusing point ＞.
Wherein aggregate size 1-5mm, aggregate clean dried, grain composition is continuous, wherein size be 2.36mm, 0.6mm,
The percent of pass of the sieve pore of 0.15mm, 0.075mm respectively is 42%, 25%, 14%, 10%.
The material is made of following preparation methods：
A. weighing weighs four kinds of SBS modified pitch structures material, PR anti-rut agents, polyester fiber, aggregate originals by quality proportioning
Material；
B. it once mixes and stirs, SBS modified asphalt binders and PR anti-rut agents is put into malaxation device, at a temperature of 180 DEG C
35min is fully mixed using the mix axis of malaxation device；
The aggregate for being previously heated to 190 DEG C is put into malaxation device, with reference to a mix step with step by C. two mixs
Mixture mix prepared by rapid B, mix temperature are 215 DEG C, duration of mixing 70s；
D. it mixes and stirs three times, with reference to a mix step, polyester fiber is added into the mixture of step C and continues to stir 38s,
Until polyester fiber is fully dispersed uniformly；
E. it is molded, the mixture of step D mixs is poured into fixed template, wait for that its temperature is down to room temperature, be then charged into
In packaging bag, that is, forms bituminous paving and inhibit reflection crack material.
Embodiment 5
A kind of inhibition asphalt pavement reflective cracking material, the mass fraction of raw material components include：Modified asphalt binders
11kg, anti-rut agent 5kg, polyester fiber 3kg, aggregate 88kg.
Wherein modified asphalt binders are rubber powder modified asphalt binder, 25 DEG C of needle penetrations of modified asphalt binders
P(25℃, 100g,5s)In 60~80 (0.1mm), softening point >=60 DEG C, 25 DEG C of elasticity restore >=65%.
Wherein anti-rut agent is RA anti-rut agents, and grain diameter is 2mm.
The wherein a diameter of 20 ± 5um of polyester fiber, fibre length 6-10mm, tensile strength >=500Mpa, extension at break
260 DEG C of rate ＞ 15%, fusing point ＞.
Wherein aggregate size 1-5mm, aggregate clean dried, grain composition is continuous, wherein size be 2.36mm, 0.6mm,
The percent of pass of the sieve pore of 0.15mm, 0.075mm respectively is 45%, 26%, 17%, 7%.
The material is made of following preparation methods：
A. weighing weighs rubber powder modified asphalt structure material, RA anti-rut agents, polyester fiber, aggregate four by quality proportioning
Kind raw material；
B. it once mixes and stirs, rubber powder modified asphalt binder and RA anti-rut agents is put into malaxation device, in 185 DEG C of temperature
It is lower to fully mix 30min using the mix axis of malaxation device；
The aggregate for being previously heated to 200 DEG C is put into malaxation device, with reference to a mix step with step by C. two mixs
Mixture mix prepared by rapid B, mix temperature are 220 DEG C, duration of mixing 60s；
D. it mixes and stirs three times, with reference to a mix step, polyester fiber is added into the mixture of step C and continues to stir 40s,
Until polyester fiber is fully dispersed uniformly；
E. it is molded, the mixture of step D mixs is poured into fixed template, wait for that its temperature is down to room temperature, be then charged into
In packaging bag, that is, forms bituminous paving and inhibit reflection crack material.
In certain section at the reflection crack of face layer, then reflection crack material prepared by embodiment 1-5 distinguishes making
Overlay AC-13 asphaltic road-mix surface courses above, which passes through 4.5 years normal uses, in former road surface the reflection crack of face layer without
Face layer is continued up to extend；Cut making inhibit reflection crack material at the upper surface of layer, find the material of the inhibition reflection crack
Good, no any crack appearance is bonded with levels.Above-mentioned Germicidal efficacy is demonstrated can effectively be pressed down using product of the present invention
Reflection cracking in a pavement processed continues to extend, and plays an important roll for the extension of the service life of highway, in China's pitch
It has a extensive future in the processing of reflection cracking in a pavement.
Above-described is only the embodiment of the present invention, the common sense such as well known specific technical solution and/or characteristic in scheme
It does not describe excessively herein.It should be pointed out that for those skilled in the art, before not departing from technical solution of the present invention
It puts, several modifications and improvements can also be made, these should also be considered as protection scope of the present invention, these all do not interfere with this
Invent the effect and patent practicability implemented.The scope of protection required by this application should be based on the content of the claims,
The records such as the specific implementation mode in specification can be used for explaining the content of claim.
Claims (8)
1. a kind of inhibition asphalt pavement reflective cracking material, it is characterised in that：The mass fraction of raw material components includes：Modified pitch
10-15 parts of binder, 2-5 parts of anti-rut agent, 3-6 parts of polyester fiber, 80-90 parts of aggregate.
2. a kind of inhibition asphalt pavement reflective cracking material as described in claim 1, it is characterised in that：The modified pitch knot
It is one kind in SBS modified pitch or rubber powder modified asphalt to close material.
3. a kind of inhibition asphalt pavement reflective cracking material as claimed in claim 2, it is characterised in that：The modified pitch knot
Close 25 DEG C of needle penetration P of material(25 DEG C, 100g, 5s)In 60~80 (0.1mm), softening point >=60 DEG C, 25 DEG C of elasticity restore >=65%.
4. a kind of inhibition asphalt pavement reflective cracking material as claimed in claim 3, it is characterised in that：The anti-rut agent is
One kind in RA anti-rut agents, PR anti-rut agents or Domix anti-rut agents.
5. a kind of inhibition asphalt pavement reflective cracking material as claimed in claim 4, it is characterised in that：The anti-rut agent grain
Diameter is 1-2mm.
6. a kind of inhibition asphalt pavement reflective cracking material as claimed in claim 5, it is characterised in that：The polyester fiber is straight
Diameter is 20 ± 5um, fibre length 6-10mm, tensile strength >=500Mpa, 260 DEG C of elongation at break ＞ 15%, fusing point ＞.
7. a kind of inhibition asphalt pavement reflective cracking material as claimed in claim 6, it is characterised in that：The aggregate size 1-
5mm, grain composition is continuous, and wherein size is that the percent of pass of the sieve pore of 2.36mm, 0.6mm, 0.15mm, 0.075mm is distinguished successively
In 35-45%, 25-30%, 14-24%, 5-10%.
8. a kind of method of the inhibition asphalt pavement reflective cracking material prepared as described in claim 1-7 is any, feature exist
In, including following operating procedure：
A. weighing weighs four kinds of modified pitch structure material, anti-rut agent, polyester fiber, aggregate material components by quality proportioning；
B. it once mixes and stirs, modified asphalt binders and anti-rut agent is put into malaxation device, are made at a temperature of 165 DEG C~185 DEG C
30-45min is fully mixed with the mix axis of malaxation device；
The aggregate for being previously heated to 180 DEG C -200 DEG C is put into malaxation device by C. two mixs, the mixture prepared with step B
Mix, mix temperature are 200 DEG C -220 DEG C, duration of mixing 60-120s；
D. it mixes and stirs three times, polyester fiber is added into the mixture of step C and continues to stir 30-40s, until polyester fiber fully divides
It dissipates uniform；
E. it is molded, the mixture of step D mixs is poured into fixed template, wait for that its temperature is down to room temperature, be then charged into packaging
In bag, that is, forms bituminous paving and inhibit reflection crack material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810201749.0A CN108298873A (en) | 2018-03-12 | 2018-03-12 | A kind of inhibition asphalt pavement reflective cracking material and preparation method thereof |
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| CN201810201749.0A CN108298873A (en) | 2018-03-12 | 2018-03-12 | A kind of inhibition asphalt pavement reflective cracking material and preparation method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104018410A (en) * | 2014-06-30 | 2014-09-03 | 上海浦东路桥建设股份有限公司 | Thin-layer asphalt concrete structure for inhibiting pavement reflection cracking and paving method |
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| CN104652212A (en) * | 2015-02-04 | 2015-05-27 | 悉地（苏州）勘察设计顾问有限公司 | Improved construction method of old cement concrete pavement |
| CN104944843A (en) * | 2015-06-15 | 2015-09-30 | 辽宁省交通科学研究院 | High-performance asphalt mixture for steel bridge floor pavement and preparation method thereof |
| CN106189290A (en) * | 2016-07-12 | 2016-12-07 | 同济大学 | Modified asphalt material, its preparation method and application for airport pavement |
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Application publication date: 20180720 |