CN107032665B - A kind of bionical self-healing property asphalt and preparation method thereof - Google Patents
A kind of bionical self-healing property asphalt and preparation method thereof Download PDFInfo
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- CN107032665B CN107032665B CN201710161242.2A CN201710161242A CN107032665B CN 107032665 B CN107032665 B CN 107032665B CN 201710161242 A CN201710161242 A CN 201710161242A CN 107032665 B CN107032665 B CN 107032665B
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention provides a kind of bionical self-healing property asphalts and preparation method thereof.Bionical self-healing property asphalt, including mineral aggregate and bionical self-healing property pitch；Wherein, the bionical self-healing property pitch includes matrix pitch and the bionical self-healing property asphalt modifier containing self-healing component.The present invention is using the material at normal temperature with dilatancy and autonomous proliferation crystallization as self-healing component, in conjunction with matrix pitch and mineral aggregate common in this field, human body healing mechanism is imitated, so that obtained bionical self-healing property asphalt makes road have the function of the same autonomous healing of similar human body under the premise of not influencing bitumen properties.Preparation method of the invention is simple, and cost control is good, can effectively reduce the generation of road disease, to extend Road Service Life, and the bionical self-healing property asphalt has good pavement performance.
Description
Technical field
The present invention relates to road and construction material technical field of modification, more particularly, to a kind of bionical self-healing property pitch
Mixture and preparation method thereof.
Background technique
Transportation Infrastructure Construction is the foundation stone of national development, is ended to 2016, highway in China total kilometrage is up to 4,570,000
Kilometer, urban road account for the 1/3 of city total area, have nearly 200,000 kilometers of roads that need to carry out restoration and reconstruction engineering every year.Road
Disease, which takes place frequently, causes road maintenance investment huge, while bringing significant impact to the trip of traffic safety and people.Road maintenance
Problem has caused extensive concern both domestic and external, in the big area of some traffic pressures, builds durable long-life road meaning
Justice is great.
According to investigation, crack on road is not only the main component of disease, and is the main inducing of other diseases.This project pair
Beijing-tianjin-hebei Region road has carried out fixed point investigation, as the result is shown 50% or more of the total disease area of flaw area Zhan.Cope with road
Crack, the method generallyd use at present are to carry out cementation of fissures processing after cracking occurs, and the method hysteresis quality is strong, time-consuming effort, carbon
Discharge amount is big, pollutes environment, and palliative, therefore reduces crack and be only the effective ways for administering road disease.
Currently, the maintenance process that China's road engineering uses mostly manually is repaired, i.e., when crack, pit slot occurs in road surface
Etc. diseases when, by the way of worker's manual working.According to maintenance rule, the heated bitumen cementation of fissures is used within 10mm to slit width
Or the emulsified asphalt cementation of fissures；Slit width uses particulate formula hot-mix asphalt mixture or Emulsified Asphalt Mixture joint filling in 10mm or more:
Asphalt surface course gap is larger, the permeable serious or slight crack in road surface but pavement strength is able to satisfy to build on road surface when requiring and seal
Layer.These maintenance methods can only of short duration solution problem of Cracking, not only cannot fundamentally solve problem of Cracking, or even cannot be effective
Prevent the further development of disease.
In this context, research and development have the function of that self-healing property road becomes the inexorable trend of Road Development in recent years.
In recent years, many countries have studied some self-healing property materials, strengths and weaknesses is as shown in table 1.
The domestic and international self-healing property pavement material skills inventory of table 1
For example, the patent of invention of Publication No. CN102786258A disclose a kind of crack self-healing bituminous concrete and its
Preparation method, the bituminous concrete include coarse aggregate, fine aggregate, filler and pitch, also comprising rigid fiber and flexible fiber, just
Property fiber incorporation be coarse aggregate, fine aggregate, filler and pitch gross mass 0.50~2.5wt%, flexible fiber incorporation is
Coarse aggregate, fine aggregate, filler and pitch gross mass 0.10~0.35wt%.The preparation method of the concrete: drying is weighed
Gather materials and be placed in material holding tray, be mixed uniformly and be preheated to 180 DEG C in baking oven, filler is individually heated to 180 DEG C；Pitch is pre-
Heat is to 160~175 DEG C；Rigid fiber and flexible fiber measure as required be respectively dried it is spare；Rigid fiber is first incorporated into mixing
It mixes and stirs in gathering materials, is then mixed and stirred with liquid bitumen, then mixed and stirred with filler, then mixed and stirred with flexible fiber, finally formed.The invention
Make the cold cracking of bituminous pavement be minimized and can self-healing, effectively avoid early-age crack, but the incorporation of fiber is to concrete belt
It adversely affects, and concrete strength response rate, crack closure rate, durability and the energy to failure etc. after repairing can not determine.
The patent of invention of Publication No. CN105198281A discloses a kind of self-healing bituminous concrete and preparation method thereof,
The raw material of its mass fraction forms are as follows: 100 parts of mineral aggregate, 5~6 parts of SBS modified pitch and 1.5~2.5 parts of magnetic metal.It is prepared
Method includes the following steps: 1) to carry out the pre-heat treatment to mineral aggregate, modified pitch and magnetic metal respectively, after respectively obtaining preheating
Mineral aggregate, modified pitch and magnetic metal；2) mineral aggregate, modified pitch and the magnetic metal after preheating are mixed, are mixed
Close material；3) forming processes are carried out to mixture, can be obtained.Steel wool is set to generate heat by electromagnetic wave, so that soft pitch, makes to drip
Green road surface is healed again, but the process heated consumes mass energy, accelerates the aging of bituminous concrete, seriously pollutes environment.
Summary of the invention
(1) technical problems to be solved
It is also easy to produce and splits under the collective effect of traffic loading and temperature change the technical problem to be solved by the present invention is to road
Seam, and under the influence of Atmospheric precipitation, if handling not in time, it will lead to the even more serious road disease such as pit slot, track, purt slurry
Evil.
(2) technical solution
The present invention provides a kind of bionical self-healing property asphalts, including mineral aggregate and bionical self-healing property pitch；
Wherein, bionical self-healing property pitch includes matrix pitch and the bionical self-healing property asphalt modifier containing self-healing component.
The present invention is provided by imitating human body healing mechanism including bionical self-healing property asphalt modifier and matrix pitch
The bionical self-healing property asphalt that bionical self-healing property pitch is combined with mineral aggregate is configured bionical using the Compositional type mixture
Self-healing property asphalt roads material surfacing, the modifying agent containing self-healing component is compounded with matrix pitch and mineral aggregate can be more preferable
Realize filling up for crack in ground.
In the present invention, self-healing component select room temperature under with dilatancy and can autonomous proliferation crystallization material.In routine
Natural environment under or air in, can expand, autonomous proliferation crystallization material substance can be used as self-healing group of the invention
Point.The temperature that room temperature is 25 DEG C or so.
In order to be padded crack preferably, self-healing component of the invention is preferably swollen resin, expansion water-stop glue, swollen
One of swollen cement, expanded graphite are a variety of.
Wherein, swollen resin is preferably high-hydroscopicity swollen resin.Super absorbent resin is a kind of novel macromolecule material
Material, it can absorb the moisture of own wt hundred times to thousand times, nontoxic, harmless, pollution-free；Water absorbing capacity extra-heavy is retained energy
Power is extra-high, and absorb water point cannot be squeezed out by simple physical method, and can release water, water suction repeatedly.
Water-swellable water-stop glue is own vol after reforming into the good rubber elastomer of restoration, immersion Yi Dan hardened
Expansion, filling gap play certain water-stagnating effect.
Free swelling rate is 8 × 10 to the concrete prepared by expanding cement in water-4~10 × 10-4, can be in concrete
The seif-citing rate of 0.2~0.6MPa is established, meets compensation and shrinks requirement, Shrinkage Cracking of Concrete can be reduced or prevented.
These types of substance can also regard any several substance combinations as self-healing component individually as self-healing component.
It is further preferred that self-healing component includes swollen resin and expanding cement, more preferably, self-healing component includes expansion
Resin and expanding cement, the weight ratio of the two are preferably 50-95:5-50；It is further preferred that the weight ratio of the two is 63-90:
10-37, more preferably 74-85:15-26.In aforementioned proportion, the instantaneous water-resisting ability and long-term water-resisting ability of mixture compared with
It is good.In the present invention, self-healing component can be the swollen resin and expanding cement of aforementioned proportion.
In order to improve the caking property of asphalt and road surface, it effectively prevent mineral aggregate removing to fall off, bionical self-healing property pitch
Modifying agent further includes anti-strip component, in order to can preferably be combined with above-mentioned self-healing component, improves the adhesiveness after the two combines,
Improve the caking property of pitch that modified dose obtains and former road surface, in the present invention anti-strip component be preferably calcium lignosulfonate,
One of sodium lignin sulfonate and Petropols are several.
Calcium lignosulfonate is nontoxic, with good stability, dispersed and caking property.Sodium lignin sulfonate has good
Stability and dispersibility, can be adsorbed on the surface of various solid particles.Petropols have good chemical stability, and
Have the characteristics that adjust viscosity and thermal stability is good and cheap, it is nontoxic, it is environmentally friendly.These types of substance can be single respectively
It is solely used as anti-strip component, any several substance combinations can also be regard as anti-strip component.It is combined when choosing any several substances
When, the proportion of various substances can be selected arbitrarily, as long as the final content for the anti-strip component being formulated is met the requirements,
Regardless of the proportion for selecting which kind of above-mentioned substance or various substances, it can reach corresponding adhesion property, prevent cement
It is similar to close the effect that object is extruded.
It is further preferred that anti-strip component includes calcium lignosulfonate, sodium lignin sulfonate and Petropols, three's
Weight ratio is 5-90:5-45:5-80, it is preferable that the weight ratio of three is preferably 10-35:15-30:35-75.In the present invention,
Anti-strip component can be calcium lignosulfonate, sodium lignin sulfonate and the Petropols of aforementioned proportion.
Or anti-strip component includes calcium lignosulfonate and Petropols, and the weight ratio of the two is 20-50:50-80,
Preferably 40-50:50-60.In the present invention, anti-strip component can be calcium lignosulfonate and the petroleum tree of aforementioned proportion
Rouge.
Or anti-strip component includes sodium lignin sulfonate and Petropols, and the weight ratio of the two is 40-50:50-60.
In the present invention, anti-strip component can be the sodium lignin sulfonate and Petropols of aforementioned proportion.
Or anti-strip component includes calcium lignosulfonate and sodium lignin sulfonate, and the weight ratio of the two is 60-70:30-
40.In the present invention, anti-strip component can be the calcium lignosulfonate and sodium lignin sulfonate of aforementioned proportion.
In order to improve the effect for independently healing and preventing pavement cracking, in a preferred embodiment of the invention, this is imitative
Raw self-healing property asphalt modifier includes self-healing component 50-90 parts by weight and anti-strip component 10-50 parts by weight；Preferably, including
Self-healing component 60-85 parts by weight and anti-strip component 15-40 parts by weight；It is further preferred that including self-healing component 70-80 weight
Part and anti-strip component 20-30 parts by weight.
Wherein, in the present invention, parts by weight can be the unit of weight well known in the art such as μ g, mg, g, kg, be also possible to
Its multiple, such as 1/10,1/100,10 times, 100 times.
It is indicated in modifying agent with mass percent, self-healing group is divided into 50-90wt%, and anti-strip group is divided into 10-50wt%.
In the present invention, when the additive amount of self-healing component is lower than 50%, then the effect of crack self-healing is poor；When the additive amount of self-healing component
Higher than 90%, then the effect of crack self-healing, which there will be no, significantly improves or the effect of crack self-healing is basically unchanged, therefore continues
Self-healing component is added, the waste of raw material is caused, improves cost.And the additive amount for working as anti-strip component is lower than 10%, then adheres to
Act on bad, part of cement compound can crack；When the additive amount of anti-strip component is higher than 50%, then adhesive attraction there will be no
Significantly improve or adhesive attraction be basically unchanged, therefore continue to add anti-strip component, lead to the waste of raw material, improve at
This.
The self-healing component and anti-strip component for only adding proper content could form the bionical self-healing property drip of optimum efficiency
Green modifying agent, the bionical self-healing property asphalt modifier neither influence the normal usage function of road, and adequately achieve road certainly
The effect of healing.
In order to enable to bionical self-healing property asphalt effectively absorb road table moisture, effectively closure crack, self-healing
Effect is good, and in another preferred embodiment of the invention, the weight ratio of matrix pitch and bionical self-healing property asphalt modifier is 10-
80:20-90, preferably 20-70:30-80.
That is, the mass percent of each component is in bionical self-healing property pitch, matrix pitch 10-80%, the drip of bionical self-healing property
Green modifying agent 20-90%；Preferably, matrix pitch 20-70%, bionical self-healing property asphalt modifier 30-80%.
In order to keep the block-water performance of mixture more preferable, in a preferred embodiment of this invention, bionical self-healing property pitch mixing
In material, the weight ratio of mineral aggregate and bionical self-healing property pitch is 80-99:1-20, preferably 90-97:3-10.
That is, the mass percent of each component is in bionical self-healing property asphalt, mineral aggregate 80-99%, it is bionical from
More property pitch 1-20%.Preferably, mineral aggregate 90-97%, bionical self-healing property pitch are 3-10%.
In the present invention, it using AC-13 type asphalt as the preferred of basic ground surface material, is demonstrate,proved by a large number of experiments
It is bright, when choosing dilatancy resin and expanding cement compounded combination, (the modified drip of SHAC-13 of bionical self-healing property asphalt is made
Green mixture), instantaneous water preventing ability and long-term self-healing property are optimal, can reach optimal crack self-healing effect.
In a preferred embodiment of the invention, mineral aggregate can be mineral aggregate commonly used in the art, preferably
For alkali aggregate, it is further preferred that mineral aggregate is basalt and/or diabase.
In order to improve the effect of filling cracks, reduce pavement seepage, in a preferred embodiment of the invention, mineral collection
The partial size of material is 13.2-16.0mm, 4.75-9.5mm, 0.15-2.36mm and 0-0.075mm.Preferably, each grain in mineral aggregate
The mass percent of diameter mineral aggregate are as follows: partial size 13.2-16.0mm is 0-20%, partial size 4.75-9.5mm is 15-50%, partial size
0.15-2.36mm is 40-70%, partial size 0-0.075mm is 10-15%.
In the present invention, the gradation of mineral aggregate need to meet " standard specification for construction and acceptance of highway asphalt pavement " (JTG E20-
2011) requirement.
In a preferred embodiment of the invention, in order to more effectively absorb road table moisture, self-healing is further increased
Effect, reach optimization structure and the double effects that economize on resources, bionical self-healing property asphalt, including basalt and it is bionical from
More property pitch；Bionical self-healing property pitch includes the matrix pitch and bionical self-healing property asphalt modification that weight ratio is 10-80:20-90
Agent；Bionical self-healing property asphalt modifier includes self-healing component 50-90 parts by weight and anti-strip component 10-50 parts by weight；
Self-healing component includes swollen resin and expanding cement, and the weight ratio of the two is 50-95:5-50；Anti-strip group subpackage
Calcium lignosulfonate, sodium lignin sulfonate and Petropols are included, the weight ratio of three is the anti-stripping of 5-90:5-45:5-80 or described
Falling component includes calcium lignosulfonate and Petropols, and the weight ratio of the two is 20-50:50-80, preferably 40-50:50-60,
Or the anti-strip component includes sodium lignin sulfonate and Petropols, the weight ratio of the two is anti-for 40-50:50-60 or described
Peeling off component includes calcium lignosulfonate and sodium lignin sulfonate, and the weight ratio of the two is 60-70:30-40.
In order to further increase self-healing performance, on the basis of the above embodiments, anti-stripping component preferably includes lignin
Sulfoacid calcium, sodium lignin sulfonate and Petropols, the weight ratio of three are preferably 10-35:15-30:33-75, more preferably 15-
34:15-33:33-40。
In one preferred embodiment, self-healing component is made of swollen resin and expanding cement, the weight ratio of the two
For 63-90:10-37, more preferably 74-85:15-26.
In the present invention, after preparing bionical self-healing property pitch using bionical self-healing property asphalt modifier, by it is bionical from
More property pitch is transported to construction site blending station, and is saved with bituminous pitch storing tank, then further prepares bionical self-healing property
Asphalt.
That is, according to an aspect of the invention, there is provided the preparation method of above-mentioned bionical self-healing property asphalt, packet
It includes:
According to the proportion by bionical self-healing property pitch and mineral aggregate at 100-200 DEG C, mix and stir 60-150s to get.
In a preferred embodiment of the invention, temperature is preferably 150-180 DEG C, mixing time 90-120s.
When asphalt temperature is higher, asphalt viscosity is lower, can play lubricating action between mineral aggregate particle, hit reality
When, it can mutually move between particle and embedding close, form more closely knit structure, the porosity of mixture；When pitch mixes
When material temperature spends low, asphalt viscosity is high, and it is hardened to cover a large amount of asphalt mastics wrapped up in for surface of aggregate when mixing and stirring, and does not have profit not only
Sliding effect, will limit the movement gathered materials instead, hits reality at this time, and the position between gathering materials is not easily shifted, also just can not form compact structure,
Porosity is larger, and stability is lower.But mixing and stirring temperature has direct influence to the aging of pitch, temperature is higher, and aging is tighter
Weight, strict control mix and stir temperature, could improve the quality of bituminous pavement.Mixing time deficiency will lead to asphalt unevenness
Even, Yi Yinqi Protective Measures of Bitumen Pavement Initial Damage reduces the use quality of bituminous pavement, shortens the working life；Mixing time is too long, meeting
The aging for accelerating asphalt reduces it using quality, increases the probability of aggregate crusher.Under normal conditions, every disk pitch is mixed
The mixing time of material is closed in 40s-60s,
When being mixed using modified pitch with big gathering materials of moisture content of gathering materials such as more empty basalt, it can be appropriately extended when mixing and stirring
Between.
Wherein, the preparation method of above-mentioned bionical self-healing property pitch, comprising:
(1) matrix pitch is heated to mixing and stirring temperature；
(2) bionical self-healing property asphalt modifier is added in the matrix pitch in step (1), is mixed and stirred, development to get.
Preferably, the temperature of mixing and stirring of the matrix pitch in step (2) and bionical self-healing property asphalt modifier is 110-160
DEG C, preferably 130-150 DEG C.
Preferably, the mixing time of step (2) mesostroma pitch and bionical self-healing property asphalt modifier is 5-60min,
Preferably 20-40min.
At a temperature of above-mentioned mix and stir and in the mixing time, matrix pitch can be sufficiently mixed with bionical self-healing property asphalt modifier
Uniformly.
Preferably, the developmental temperature of step (2) mesostroma pitch and bionical self-healing property asphalt modifier is 130-150
DEG C, development time 20-40min.
In the present invention, development is usually placed in baking oven.
Preferably, the mixing method of matrix pitch and bionical self-healing property asphalt modifier is shear agitation, stirring rate
For 2000-10000r/min.It carries out high speed using boxshear apparatus to mix and stir, stirring rate is preferably 4000-6000r/min.
In the present invention, the preparation method of above-mentioned bionical self-healing property asphalt modifier, preferably includes: weighing according to the proportion certainly
More component and anti-strip component, mixed and stirred to get.
Wherein, usually self-healing component and anti-strip group are distributed into mixing apparatus and are mixed and stirred.
In a preferred embodiment of the invention, the temperature of mixing and stirring of self-healing component and anti-strip component is 20-40 DEG C.
20-40 DEG C at a temperature of, self-healing component and anti-strip component in the present invention are in the state of free-flowing,
Good fluidity is conducive to the two and is sufficiently mixed, and uniformly, the bionical self-healing property asphalt modifier of preparation is liquid, is had good
Mobility.Even more preferably, mixing and stirring temperature is 25-30 DEG C.It is highly preferred that self-healing component and anti-strip component mix and stir temperature
For room temperature (25 DEG C or so).
In order to be sufficiently mixed the two, the mixing time of self-healing component and the anti-strip component is 90-150s, preferably
It is mixing time 100-120s.Within the above-mentioned mixing time, two kinds of substances can be sufficiently mixed uniformly.
(3) beneficial effect
(1) bionical self-healing property asphalt proposed by the present invention with and preparation method thereof by the modification containing self-healing component
Agent organically combines with bitumen base and mineral aggregate, and the bionical self-healing property asphalt made is not influencing pitch
Make road have the function of the same autonomous healing of similar human body under the premise of pavement performance, effectively fills up splitting for road surface or roadbed
Seam reduces destruction of the rainwater to roadbed, prolongs its service life simple process, easy to operate, preparation process is pollution-free, cost
It is low；
(2) bionical self-healing property asphalt can effectively absorb the moisture of road surface, expand into triggering in crack
Property resin instantaneously block water, then trigger expanding cement absorb resin in moisture occur hydration reaction generate cement compound, in turn
So that crack is completely filled and is closely bonded along fracture width, crack on road is made independently to heal under the growth of cement, to reach
To optimization structure and the double effects to economize on resources；
(3) preparation method of bionical self-healing property asphalt of the invention, by by bionical self-healing property asphalt modifier
It is directly appended in matrix pitch, is prepared into bionical self-healing property pitch, then the bionical self-healing property pitch is directly appended to centainly
In the mineral aggregate of gradation, bionical self-healing property asphalt is formed, the preparation method is simple, and cost control is good, Neng Gouyou
Effect reduces the generation of road disease, to extend Road Service Life, and the bionical self-healing property asphalt has well
Pavement performance.
Specific embodiment
Below with reference to exemplary embodiments, specific embodiments of the present invention will be described in further detail.Following embodiment
For illustrating the present invention, but it is not intended to limit the scope of the invention.
All material involved in following embodiment is known commercial product, wherein expanding cement is UEA coagulation
Soil expansion agent is added in cement and is made, and UEA cement expansive material is purchased from macro auspicious, and cement is purchased from Gao Xing, and swollen resin is emerging purchased from spring,
Matrix pitch is AC-13 type asphalt.
Embodiment 1
Present embodiments provide a kind of bionical self-healing property asphalt, including mineral aggregate and bionical self-healing property pitch.
Bionical self-healing property pitch includes matrix pitch and bionical self-healing property asphalt modifier.Bionical self-healing property asphalt modifier includes self-healing
Component and anti-strip component.
In the present embodiment, self-healing component includes swollen resin and expanding cement, anti-strip component include calcium lignosulfonate,
Sodium lignin sulfonate and Petropols.
In the present embodiment, mineral aggregate is basalt.
In the bionical self-healing property asphalt of the present embodiment, the mass percent of mineral aggregate is 80%, bionical self-healing
Property pitch mass percent be 20%.
In the bionical self-healing property pitch of the present embodiment, the mass percent of matrix pitch is 20%, bionical self-healing property pitch
The mass percent of modifying agent is 80%.
In the bionical self-healing property asphalt modifier of the present embodiment, the mass percent of self-healing component is 80%, anti-strip group
The mass percent divided is 20%.
For preparing the bionical self-healing property asphalt of 10000g, mineral aggregate 8000g is needed, bionical self-healing property need to be prepared
Pitch 2000g.During preparing bionical self-healing property pitch, matrix pitch 400g is needed, bionical self-healing property pitch need to be prepared and changed
Property agent 1600g.During preparing bionical self-healing property asphalt modifier, self-healing component 1280g is needed, anti-strip component is needed
320g.In the present embodiment, the mass percent of the partial size of mineral aggregate and each partial size mineral aggregate is as shown in table 2.
The mass percent of the partial size of 2 mineral aggregate of table and each partial size mineral aggregate
Above-mentioned bionical self-healing property asphalt the preparation method is as follows:
(1) bionical self-healing property pitch is prepared；
(2) bionical self-healing property pitch is mixed and stirred at a certain temperature with mineral aggregate.
Mineral aggregate and bionical self-healing property pitch mix and stir temperature be 100 DEG C, mixing time 150s.
Above-mentioned bionical self-healing property asphalt modifier the preparation method is as follows:
(1) self-healing component and anti-strip component are weighed according to a certain percentage；
(2) self-healing component and anti-strip group are distributed into mixing apparatus and are mixed and stirred.
The mass percent of each substance is in self-healing component, swollen resin 50%, expanding cement 50%.In anti-strip component
The mass percent of each substance is calcium lignosulfonate 90%, sodium lignin sulfonate 5% and Petropols 5%.
The temperature of mixing and stirring of self-healing component and anti-strip component is 25 DEG C, mixing time 110s.The revolving speed of blender is
40r/min。
Above-mentioned bionical self-healing property pitch the preparation method is as follows:
(1) matrix pitch is heated to mixing and stirring temperature；
(2) bionical self-healing property asphalt modifier is added in the matrix pitch for having been heated to and mix and stir temperature and is mixed
With；
(3) mixture of the matrix pitch after mixing and stirring and bionical self-healing property asphalt modifier is put into baking oven and is sent out
It educates.
Matrix pitch and bionical self-healing property asphalt modifier mix and stir temperature be 110 DEG C, mixing time 60min；Matrix
The developmental temperature of pitch and bionical self-healing property asphalt modifier is 130 DEG C, development time 40min.It is carried out using boxshear apparatus high
Speed is mixed and stirred, stirring rate 4000r/min.
Embodiment 2
Present embodiments provide a kind of bionical self-healing property asphalt and preparation method thereof, other steps are and embodiment
1 is identical, unlike:
In the bionical self-healing property asphalt of the present embodiment, the mass percent of mineral aggregate is 99%, bionical self-healing
Property pitch mass percent be 1%.
In the bionical self-healing property pitch of the present embodiment, the mass percent of matrix pitch is 40%, bionical self-healing property pitch
The mass percent of modifying agent is 60%.
In the bionical self-healing property asphalt modifier of the present embodiment, the mass percent of self-healing component is 70%, anti-strip group
The mass percent divided is 30%.
The self-healing component of the present embodiment includes swollen resin and expanding cement, anti-strip component include calcium lignosulfonate and
Petropols.The mass percent of each substance in self-healing component are as follows: swollen resin 63%, expanding cement 37%.Anti-strip component
In each substance mass percent are as follows: calcium lignosulfonate 20% and Petropols 80%.
Embodiment 3:
Present embodiments provide a kind of bionical self-healing property asphalt and preparation method thereof, other steps are and embodiment
1 is identical, unlike:
In the bionical self-healing property asphalt of the present embodiment, the mass percent of mineral aggregate is 90%, bionical self-healing
Property pitch mass percent be 10%.
In the bionical self-healing property pitch of the present embodiment, the mass percent of matrix pitch is 70%, bionical self-healing property pitch
The mass percent of modifying agent is 30%.
In the bionical self-healing property asphalt modifier of the present embodiment, the mass percent of self-healing component is 85%, anti-strip group
The mass percent divided is 15%.
The self-healing component of the present embodiment includes swollen resin, expanding cement combination, and anti-strip component includes lignin sulfonic acid
Calcium and sodium lignin sulfonate.The mass percent of each substance is in self-healing component, swollen resin 74%, expanding cement 26%.It is anti-
The mass percent for peeling off each substance in component is calcium lignosulfonate 65% and sodium lignin sulfonate 35%.
Embodiment 4:
Present embodiments provide a kind of bionical self-healing property asphalt and preparation method thereof, other steps are and embodiment
1 is identical, unlike:
In the bionical self-healing property asphalt of the present embodiment, the mass percent of mineral aggregate is 97%, bionical self-healing
Property pitch mass percent be 3%.
In the bionical self-healing property pitch of the present embodiment, the mass percent of matrix pitch is 80%, bionical self-healing property pitch
The mass percent of modifying agent is 20%.
In the bionical self-healing property asphalt modifier of the present embodiment, the mass percent of self-healing component is 90%, anti-strip group
The mass percent divided is 10%.
The self-healing component of the present embodiment includes swollen resin, expanding cement combination, and anti-strip component includes lignin sulfonic acid
Calcium, sodium lignin sulfonate and Petropols.The mass percent of each substance is in self-healing component, swollen resin 85%, swelling water
Mud 15%.The mass percent of each substance is in anti-strip component, calcium lignosulfonate 10%, sodium lignin sulfonate 15% and stone
Oleoresin 75%.
Embodiment 5:
Present embodiments provide a kind of bionical self-healing property asphalt and preparation method thereof, other steps are and embodiment
1 is identical, unlike:
In the bionical self-healing property asphalt of the present embodiment, the mass percent of mineral aggregate is 90%, bionical self-healing
Property pitch mass percent be 10%.
In the bionical self-healing property pitch of the present embodiment, the mass percent of matrix pitch is 10%, bionical self-healing property pitch
The mass percent of modifying agent is 90%.
In the bionical self-healing property asphalt modifier of the present embodiment, the mass percent of self-healing component is 90%, anti-strip group
The mass percent divided is 10%.
In the present embodiment, self-healing component includes swollen resin, expanding cement combination, and anti-strip component includes lignin sulfonic acid
Calcium, sodium lignin sulfonate and Petropols.The mass percent of each substance is in self-healing component, swollen resin 90%, swelling water
Mud 10%.The mass percent of each substance is in anti-strip component, calcium lignosulfonate 15%, sodium lignin sulfonate 45% and stone
Oleoresin 40%.
Embodiment 6:
Present embodiments provide a kind of bionical self-healing property asphalt and preparation method thereof, other steps are and embodiment
1 is identical, unlike:
In the bionical self-healing property asphalt of the present embodiment, the mass percent of mineral aggregate is 85%, bionical self-healing
Property pitch mass percent be 15%.
In the bionical self-healing property pitch of the present embodiment, the mass percent of matrix pitch is 30%, bionical self-healing property pitch
The mass percent of modifying agent is 70%.
In the bionical self-healing property asphalt modifier of the present embodiment, the mass percent of self-healing component is 75%, anti-strip group
The mass percent divided is 25%.
In the present embodiment, self-healing component includes swollen resin, expanding cement combination, and anti-strip component includes lignin sulfonic acid
Calcium, sodium lignin sulfonate and Petropols.The mass percent of each substance is in self-healing component, swollen resin 95%, swelling water
Mud 5%.The mass percent of each substance is in anti-strip component, calcium lignosulfonate 34%, sodium lignin sulfonate 33% and stone
Oleoresin 33%.
Test example
Bionical self-healing property asphalt prepared by embodiment 1 to embodiment 6 is subjected to anti-low-temperature cracking, high temperature dynamic stability
Degree and freeze-thaw split test, test result are as shown in Table 3-5.From the point of view of test result, bionical self-healing property asphalt it is low
Warm cracking resistance, high temperature stability performance and freeze-thaw split performance are basically unchanged.
The crack resistance at low-temperature test result of the bionical self-healing property asphalt of table 3
| Embodiment number | Maximum load (N) | Mid-span deflection (mm) |
| 90# plain asphalt mixture | 1994 | 2.30 |
| Embodiment 1 | 1982 | 2.27 |
| Embodiment 2 | 1978 | 2.22 |
| Embodiment 3 | 1975 | 2.25 |
| Embodiment 4 | 1974 | 2.29 |
| Embodiment 5 | 1978 | 2.30 |
| Embodiment 6 | 1981 | 2.27 |
The high temperature stability performance test result of the bionical self-healing property asphalt of table 4
| Embodiment number | Dynamic stability (mm/ times) |
| 90# plain asphalt mixture | 1285 |
| Embodiment 1 | 1369 |
| Embodiment 2 | 1260 |
| Embodiment 3 | 1259 |
| Embodiment 4 | 1261 |
| Embodiment 5 | 1280 |
| Embodiment 6 | 1296 |
The freeze-thaw split the performance test results of the bionical self-healing property asphalt of table 5
Marshall Test sample is prepared according to " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTG E20-211)
Test specimen is extruded the crack that width is 2mm with Lu Qiangyi, and the sample prepared is placed 72h in dry environments by product
Water preventing ability test is carried out afterwards.
Test specimen (m0, g) in dry environments, instantaneous water preventing ability test is carried out by the way of trickle irrigation.I.e. to crack
Middle instillation 100g water, and exudation water is recorded, water percolating capacity the results are shown in Table 6.It oozes out water flowmeter and levies bionical self-healing property asphalt
Instantaneous water-resisting ability, instantaneous water-resisting ability is bigger, illustrates that self-healing effect is better.
The water percolating capacity of the bionical self-healing property asphalt of table 6
| Embodiment number | Average water percolating capacity (/ 100ml) |
| AC-13 plain asphalt mixture | 50.00 |
| Embodiment 1 | 20.00 |
| Embodiment 2 | 15.00 |
| Embodiment 3 | 14.00 |
| Embodiment 4 | 12.00 |
| Embodiment 5 | 11.30 |
| Embodiment 6 | 10.00 |
Test specimen (m0, g) in dry environments, long-term self-healing property test is carried out by the way of trickle irrigation.Divide 4d every
It instills 100g water into crack, and record exudation water respectively, average water percolating capacity the results are shown in Table 7.It is bionical to ooze out water flowmeter sign
The long-term self-healing ability of self-healing property asphalt, long-term self-healing ability is bigger, illustrates that self-healing effect is better, durability is better.
The durability test result of the bionical self-healing property asphalt of table 7
| Embodiment number | Average water percolating capacity (/ 100ml) |
| AC-13 plain asphalt mixture | 50.00 |
| Embodiment 1 | 10.00 |
| Embodiment 2 | 9.00 |
| Embodiment 3 | 7.00 |
| Embodiment 4 | 8.00 |
| Embodiment 5 | 9.50 |
| Embodiment 6 | 9.20 |
From the point of view of test result, the long-term self-healing property of bionical self-healing property asphalt is excellent.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (8)
1. a kind of bionical self-healing property asphalt, which is characterized in that the bionical self-healing property asphalt, including basalt
With bionical self-healing property pitch；
Wherein, the bionical self-healing property pitch includes the matrix pitch and bionical self-healing property pitch that weight ratio is 10-80:20-90
Modifying agent；
The bionical self-healing property asphalt modifier includes self-healing component 50-90 parts by weight and anti-strip component 10-50 parts by weight；
The self-healing component includes swollen resin and expanding cement, and the weight ratio of the two is 50-95:5-50；
The anti-strip component includes calcium lignosulfonate, sodium lignin sulfonate and Petropols, and the weight ratio of three is 5-90:
5-45:5-80 or the anti-strip component include calcium lignosulfonate and Petropols, and the weight ratio of the two is 20-50:50-
80 or the anti-strip component include sodium lignin sulfonate and Petropols, the weight ratio of the two is 40-50:50-60 or institute
Stating anti-strip component includes calcium lignosulfonate and sodium lignin sulfonate, and the weight ratio of the two is 60-70:30-40.
2. bionical self-healing property asphalt according to claim 1, which is characterized in that the bionical self-healing property pitch changes
Property agent includes self-healing component 60-85 parts by weight and anti-strip component 15-40 parts by weight.
3. bionical self-healing property asphalt according to claim 1, which is characterized in that the bionical self-healing property pitch changes
Property agent includes self-healing component 70-80 parts by weight and anti-strip component 20-30 parts by weight.
4. bionical self-healing property asphalt according to claim 1, which is characterized in that the matrix pitch and containing from
More the weight ratio 20-70:30-80 of the bionical self-healing property asphalt modifier of component.
5. bionical self-healing property asphalt according to claim 1, which is characterized in that the basalt and bionical self-healing
Property pitch weight ratio be 90-97:3-10.
6. bionical self-healing property asphalt according to any one of claim 1 to 5, which is characterized in that the Black Warrior
The partial size of rock is 13.2-16.0mm, 4.75-9.5mm, 0.15-2.36mm and 0-0.075mm.
7. bionical self-healing property asphalt according to claim 6, which is characterized in that each partial size is profound in the basalt
The mass percent of Wu Yan are as follows: partial size 13.2-16.0mm is 0-20%, partial size 4.75-9.5mm is 15-50%, partial size 0.15-
2.36mm is 40-70%, partial size 0-0.075mm is 10-15%.
8. the preparation method of bionical self-healing property asphalt of any of claims 1-7, comprising:
According to the proportion by bionical self-healing property pitch and basalt at 100-200 DEG C, mix and stir 60-150s to get.
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