CN107244836B - A kind of anti-freezing asphalt road - Google Patents
A kind of anti-freezing asphalt road Download PDFInfo
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- CN107244836B CN107244836B CN201710564308.2A CN201710564308A CN107244836B CN 107244836 B CN107244836 B CN 107244836B CN 201710564308 A CN201710564308 A CN 201710564308A CN 107244836 B CN107244836 B CN 107244836B
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- pitch
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- blacktop
- asphalt road
- freezing
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Classifications
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
-
- 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
Abstract
The invention discloses a kind of anti-freezing asphalt roads, the anti-freezing asphalt road includes including base, blacktop, the blacktop forms, in parts by mass: 60 ~ 83 parts of pitch, 5 ~ 15 parts of polyurethane, 13 ~ 20 parts of resin, 18 ~ 40 parts of diluent, 0.8 ~ 2 part of adjuvant, 0.5 ~ 2 part of Advance in Polyimide/Montmorillonite Nanocomposites, 0.1 ~ 0.7 part of stabilizer, good frost resistance with bituminous pavement, so that road surface is safer, the advantages of extending bituminous pavement service life.
Description
Technical field
The present invention relates to town road technical field, in particular to a kind of anti-freezing asphalt road.
Background technique
Bituminous pavement refers to various types of road surfaces that bitumen for road use material making is mixed in mineral material.Pitch combines
Material, which improves to pave the way, resists the ability of driving and the damage of natural cause road pavement with pellet, and evenness of road surface is made to lack dirt, waterproof, warp
It is durable long.Therefore, bituminous pavement is a kind of high class pavement being the most widely used in road construction.
The Chinese patent that application publication number is CN105968476A, authorized announcement date is on 07 08th, 2012 discloses one
Kind of asphalt pavement material, including nonyl phenol, rubber powder of waste tire, spodumene powder, SBS, Fly-ash, surface modifier,
Stearic acid, magnesium silicate, acetone, anti-aging agent, flow liner rock powder etc. use above formula so that the bituminous pavement after paving has
Preferable resistance to ag(e)ing, is unlikely to deform wearability.
It is in place of the deficiencies in the prior art, existing bituminous pavement is after mating formation under cold snap, so that locating for pitch
External environment temperature is low, leads to that the bituminous pavement of part is frozen, shrinkage cracking or freeze thawing are loose at low temperature.So that existing drip
Green road surface is easy to damage under the cold snap of northern China.Reduce the safety on road surface.
Summary of the invention
The object of the present invention is to provide a kind of anti-freezing asphalt roads, and which solve the anti-freezing property of existing bituminous pavement is poor
The problem of, the good frost resistance with bituminous pavement extends the excellent of bituminous pavement service life so that road surface is safer
Point.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of anti-freezing asphalt road, including base, blacktop, blacktop, which forms, includes, in parts by mass: drip
60~83 parts green, 5~15 parts of polyurethane, 13~20 parts of resin, 18~40 parts of diluent, 0.8~2 part of adjuvant, polyimides/
0.5~2 part of Nano composite material of montmorillonite, 0.1~0.7 part of stabilizer.
Pitch is industrial common pitch, such as asphalt or coal tar pitch.
Advance in Polyimide/Montmorillonite Nanocomposites is a kind of nano material of high barrier, and montmorillonite is that one kind two compares
One type layered silicate clay, every layer of about 1nm, length is 100~1000nm.Polyimides is that a kind of comprehensive performance is very excellent
Different polymer, with excellent heat resistance, chemical stability and electrical property.The silicate lamella of 1nm thickness is evenly dispersed
Advance in Polyimide/Montmorillonite Nanocomposites is formed in polymer body.There is experimental result it is found that polyimides/illiteracy is added
After de- soil nanocomposite the anti-freezing property of bituminous pavement is significantly improved, it can be understood as polyimides/montmorillonite
Nanocomposite is uniformly dispersed between pitch, and the silicate layer of Advance in Polyimide/Montmorillonite Nanocomposites is for water
It is impervious for dividing between monomer molecule.So that the substances such as moisture, air not easily pass through bitumen layer, reduce cold
Air or moisture freeze after because volume increases damage for bitumen layer.And the heat for reducing pitch itself to a certain extent passes
Pass efficiency.Polyurethane has abated effect for the infiltration effect of pitch after being added, so that pitch includes discharge reduction, reduces moisture
Damage for pitch.By experimental result it is found that by the addition of resin so that the viscosity of pitch itself increases, so that pitch
It is more easier setting construction.Viscosity increases so that the gap inside pitch is small, and the low temperature inside reduction pitch transmits.Diluent makes
It obtains pitch to be more easier to sprawl, while facilitating the physical state of worker's adjusting pitch.Adjuvant and polyimides/montmorillonite-based nano
Composite material synergy makes pitch itself have better cryoprotective effects.The addition of stabilizer so that pitch in external environment
The aged deterioration time extend, extend pitch service life, reduce damage of the external environment for pitch.
Further preferably are as follows: blacktop composition in, in parts by mass: 60~83 parts of pitch, 10~15 parts of polyurethane,
13~20 parts of resin, 18~40 parts of diluent, 0.8~2 part of adjuvant, Advance in Polyimide/Montmorillonite Nanocomposites 0.5~1
Part, 0.1~0.5 part of stabilizer.
According to the experimental results, there is the performance of pitch and influence in the amount of pitch itself, when asphalt quality ratio is greater than 83
When pitch stability weaken, anti-freezing property can also weaken.The mass parts range of pitch is then scheduled on 60~83 preferably.Pass through reality
The amount that polyurethane is discussed is tested, when polyurethane is not added, the moisture content in asphalt blocks is more, the water after addition polyurethane in asphalt blocks
Point content gradually decreases, and the moisture content when polyurethane mass parts are greater than 10 in asphalt blocks occurs significantly to subtract suddenly
It is few, but water content reduction is unobvious in asphalt blocks after the mass parts of polyurethane are greater than 15, then is scheduled on the mass parts of polyurethane
10~15 preferably.Resin for increase there is facilitation effect for the viscosity of pitch, and with the increase pitch of amount of resin
Viscosity gradually increases, but when resin quality part is greater than 15, resin is significantly better than resinite for the facilitation effect of pitch viscosity
Measuring part is the laboratory sample between 10~15.Then think that the mass parts of resin are scheduled between 15~20.Polyimides/illiteracy is de-
Native nanocomposite addition is significantly improved for the cleavage strength of pitch, when polyimides/montmorillonite-based nano composite wood
The increase of pitch cleavage strength can be ignored when the mass parts of material are greater than 2, but work as polyimides/montmorillonite-based nano composite wood
The mass parts of material are unobvious for the facilitation effect of the cleavage strength of pitch after being greater than 1.Then think to select polyimides/montmorillonite
The mass parts of nanocomposite are preferable between 0.5~1.By experiment, stabilizer for pitch stability influence with
The increase of stabilizer and enhance, but stabilizer gradually weakens the reinforcing effect of Bituminous stabilized more than stabilizer after 0.5.
And when stabilizer it is extra 0.7 when, downward trend at the stability of pitch, then the range of stabilizer be limited to mass parts be 0.1~
0.5 preferably.
Further preferably are as follows: the pitch is asphalt.
Coal tar pitch is coking byproduct, has the toxicant of difficult volatilization, and temperature is for the shadow of coal tar pitch itself
Sound is very big, is not easy as antifreeze pitch.Bitumen price is not suitable for using in modern production.And asphalt itself by
The influence of temperature compares that coal tar pitch is much smaller, and cheap, the easy manufacture of itself is suitable as the one of antifreeze pitch
Part.
Further preferably are as follows: stabilizer is lignocellulosic.
Lignocellulosic is organic wadding fibrous object that natural reproducible timber is obtained by chemical treatment, machining
It is matter, non-toxic and tasteless, pollution-free, "dead".Lignocellulosic can effectively prevent pitch cracking, increase pitch intensity.Wooden fibre
Dimension element itself has excellent flexibility and dispersibility, be added after pitch make pitch have good support force with it is durable
Power.By experiment it is found that lignocellulosic enhances the stability of pitch itself, the service life of pitch is extended.
Further preferably are as follows: blacktop composition further includes the rubber powder that mass parts are 15~25 parts.
According to the experimental results, for the cleavage strength and invigoration effect of bituminous pavement, however rubber after rubber powder is added
Powder itself does not have this ability.After can be understood as rubber powder and Advance in Polyimide/Montmorillonite Nanocomposites collective effect,
There is certain facilitation for Advance in Polyimide/Montmorillonite Nanocomposites.So that polyimides/montmorillonite-based nano composite wood
Expect that the effect of itself is more preferable, so that the anti-freezing property of pitch is more preferable.Rubber powder itself may make after pitch is added simultaneously
Pitch takes into account toughness, elasticity while the viscosity for also possessing pitch itself with rubber.Further increase the pavement performance of pitch.
Further preferably are as follows: diluent be isoamyl acetate, isobutyl acetate, the different ethylpropylene of acetic acid it is one such or
It is several.
According to the experimental results, use the different ethylpropylene of isoamyl acetate, isobutyl acetate, acetic acid as diluent, it is right
Dilution effect is all had in pitch itself, and the more dilution effects of quantity of diluent are better.Drip can be adjusted by diluent
Green thick degree.Also show that the dilution effect of isoamyl acetate is best by experiment simultaneously, isobutyl acetate dilution effect
It, the dilution effect of the different ethylpropylene of acetic acid is poor.But also showing that pitch should not be excessively dilute by experiment, then diluent itself has
There is certain use scope, i.e. mass parts are 18~40 parts.
Further preferably are as follows: adjuvant is that benzoyl oxide or benzoic acid are one such or two kinds.
According to the experimental results, benzoyl oxide or benzoic acid, which is added, has centainly strong for the cleavage strength of pitch ontology
Change effect, and benzoyl oxide or benzoic acid itself do not have this effect for pitch.It may be considered that benzoyl oxide or benzene first
When acid is with Advance in Polyimide/Montmorillonite Nanocomposites collective effect, for the effect of Advance in Polyimide/Montmorillonite Nanocomposites
Fruit has booster action, and Advance in Polyimide/Montmorillonite Nanocomposites makees the reinforcing of pitch anti-freezing property itself
With stronger.
Further preferably are as follows: resin is PE resin or PET resin.
There is experimental result it is found that having using the viscosity that PE resin and PET resin are for pitch, there is preferable promotion to imitate
Fruit.And PE resin is better than PET resin for the facilitation effect of asphalt viscosity.
In conclusion the invention has the following advantages:
The application joined Advance in Polyimide/Montmorillonite Nanocomposites in the formula of blacktop.Utilize polyamides
Imines/Nano composite material of montmorillonite enhances the cleavage strength of pitch, to enhance the cryoprotective effects of blacktop.It is logical
It crosses adjuvant benzoyl oxide or benzoic acid and asphalt road is enhanced for the facilitation effect of Advance in Polyimide/Montmorillonite Nanocomposites
The cryoprotective effects in face.It is found through experiments that rubber powder, which is added, also has Advance in Polyimide/Montmorillonite Nanocomposites reinforcing
Effect, so that being improved after Advance in Polyimide/Montmorillonite Nanocomposites, rubber powder, benzoyl oxide or benzoic acid synergy
The anti-freezing property of bituminous pavement.So that bituminous pavement has good anti-freezing property.
The application is also added into polyurethane, stabilizer (lignocellulosic), so that the infiltration effect of pitch is worse, enhancing drip
Green stability reduces the moisture in blacktop by these modes and enters the cold air in blacktop, thus
The damage for bituminous pavement such as low temperature cold air, icing moisture is reduced, strengthens the cryoprotective effects of bituminous pavement from another point of view.
The sliminess of pitch is adjusted by resin, diluent, so that pitch has preferable sliminess, so that pitch
It is more convenient to sprawl construction, reduce bituminous pavement because the problems such as gap caused by construction so that bituminous pavement stress by temperature more
Add uniform and stable.To strengthen the cryoprotective effects of bituminous pavement.
Specific embodiment
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the protection scope of invention.
Examples 1 to 3, a kind of anti-freezing asphalt road, including base, blacktop, the base is by Extra-fine sand, rubble
Etc. being laid with.
The formula of bituminous pavement described in Examples 1 to 3 is as shown in Table 1:
Table one: the component and content table of blacktop in Examples 1 to 3
Embodiment 4: a kind of anti-freezing asphalt road, difference from Example 2 be, polyimides in blacktop/
The mass parts of Nano composite material of montmorillonite are 0.7.
Embodiment 5: a kind of anti-freezing asphalt road, difference from Example 2 be, polyimides in blacktop/
The mass parts of Nano composite material of montmorillonite are 1.5.
Embodiment 6: a kind of anti-freezing asphalt road, difference from Example 2 be, polyimides in blacktop/
The mass parts of Nano composite material of montmorillonite are 1.8.
Embodiment 7: a kind of anti-freezing asphalt road, difference from Example 2 be, the matter of PE resin in blacktop
Measuring part is 13.
Embodiment 8: a kind of anti-freezing asphalt road, difference from Example 2 be, the matter of PE resin in blacktop
Measuring part is 17.
Embodiment 9: a kind of anti-freezing asphalt road, difference from Example 2 be, the matter of PE resin in blacktop
Measuring part is 20.
Embodiment 10: a kind of anti-freezing asphalt road, difference from Example 2 be, 15 mass parts in blacktop
PE resin replacement be 10 mass parts PET resin.
Embodiment 11: a kind of anti-freezing asphalt road, difference from Example 2 be, 15 mass parts in blacktop
PE resin replacement be 15 mass parts PET resin.
Embodiment 12: a kind of anti-freezing asphalt road, difference from Example 2 be, 15 mass parts in blacktop
PE resin replacement be 20 mass parts PET resin.
Embodiment 13: a kind of anti-freezing asphalt road, difference from Example 2 be, polyurethane in blacktop
Mass parts are 7.
Embodiment 14: a kind of anti-freezing asphalt road, difference from Example 2 be, polyurethane in blacktop
Mass parts are 12.
Embodiment 15: a kind of anti-freezing asphalt road, difference from Example 2 be, polyurethane in blacktop
Mass parts are 14.
Embodiment 16: a kind of anti-freezing asphalt road, difference from Example 2 be, wood fibre in blacktop
The mass parts of element are 0.3.
Embodiment 17: a kind of anti-freezing asphalt road, difference from Example 2 be, wood fibre in blacktop
The mass parts of element are 0.6.
Embodiment 18: a kind of anti-freezing asphalt road, difference from Example 2 be, rubber powder in blacktop
Mass parts are 23.
Embodiment 19: a kind of anti-freezing asphalt road, difference from Example 2 be, rubber powder in blacktop
Mass parts are 17.
Embodiment 20, a kind of anti-freezing asphalt road, difference from Example 2 be, acetic acid isoamyl in blacktop
The mass parts of ester are 26.
Embodiment 21, a kind of anti-freezing asphalt road, difference from Example 2 be, acetic acid isoamyl in blacktop
The mass parts of ester are 35.
Embodiment 22, a kind of anti-freezing asphalt road, difference from Example 2 be, benzoyl oxide in blacktop
Mass parts be 1.1.
Embodiment 23, a kind of anti-freezing asphalt road, difference from Example 2 be, benzoyl oxide in blacktop
Mass parts be 1.7.
Embodiment 24: a kind of anti-freezing asphalt road, difference from Example 2 be, asphalt in blacktop
Mass parts be 65.
Embodiment 25: a kind of anti-freezing asphalt road, difference from Example 2 be, asphalt in blacktop
Mass parts be 75.
Comparative example 1: a kind of anti-freezing asphalt road, difference from Example 2 be, polyimides in blacktop/
The mass parts of Nano composite material of montmorillonite are 0.
Comparative example 2: a kind of anti-freezing asphalt road, difference from Example 2 be, polyimides in blacktop/
The mass parts of Nano composite material of montmorillonite are 0.2.
Comparative example 3: a kind of anti-freezing asphalt road, difference from Example 2 be, polyimides in blacktop/
The mass parts of Nano composite material of montmorillonite are 2.5.
Comparative example 4: a kind of anti-freezing asphalt road, difference from Example 2 be, the matter of PE resin in blacktop
Measuring part is 0.
Comparative example 5: a kind of anti-freezing asphalt road, difference from Example 2 be, the matter of PE resin in blacktop
Measuring part is 30.
Comparative example 6: a kind of anti-freezing asphalt road, difference from Example 2 be, the matter of polyurethane in blacktop
Measuring part is 0.
Comparative example 7: a kind of anti-freezing asphalt road, difference from Example 2 be, the matter of polyurethane in blacktop
Measuring part is 25.
Comparative example 8: a kind of anti-freezing asphalt road, difference from Example 2 be, in blacktop stabilizer be with
The identical polyvinyl alcohol of lignocellulosic mass fraction.
Comparative example 9: a kind of anti-freezing asphalt road, difference from Example 2 are, stabilization is not added in blacktop
Agent.
Comparative example 10: a kind of anti-freezing asphalt road, difference from Example 2 are that stabilizer is (wooden in blacktop
Matter cellulose) mass parts be 0.9.
Comparative example 11: a kind of anti-freezing asphalt road, difference from Example 2 are that stabilizer is (wooden in blacktop
Matter cellulose) mass parts be 1.5.
Comparative example 12: a kind of anti-freezing asphalt road, difference from Example 2 be, rubber powder in blacktop
Mass parts are 0.
Comparative example 13: a kind of anti-freezing asphalt road, difference from Example 2 be, rubber powder in blacktop
Mass parts are 35.
Comparative example 14: a kind of anti-freezing asphalt road, difference from Example 2 be, acetic acid isoamyl in blacktop
The mass parts of ester are 0.
Comparative example 15: a kind of anti-freezing asphalt road, difference from Example 2 be, acetic acid isoamyl in blacktop
The mass parts of ester are 60.
Comparative example 16: a kind of anti-freezing asphalt road, difference from Example 2 be, acetic acid isoamyl in blacktop
Ester is replaced by isobutyl acetate.
Comparative example 17: a kind of anti-freezing asphalt road, difference from Example 2 be, acetic acid isoamyl in blacktop
Ester is replaced by the different ethylpropylene of acetic acid.
Comparative example 18: a kind of anti-freezing asphalt road, difference from Example 2 be, benzoyl oxide in blacktop
Mass parts be 0.
Comparative example 19: a kind of anti-freezing asphalt road, difference from Example 2 be, benzoyl oxide in blacktop
Mass parts be 3.
Comparative example 20: a kind of anti-freezing asphalt road, difference from Example 2 be, benzoyl oxide in blacktop
It is replaced by benzoic acid identical with benzoyl oxide mass fraction.
Comparative example 21: a kind of anti-freezing asphalt road, difference from Example 2 be, asphalt in blacktop
Mass parts are 40.
Comparative example 22: a kind of anti-freezing asphalt road, difference from Example 2 be, asphalt in blacktop
Mass parts are 90.
The test method of anti-freezing asphalt road is as follows:
Freeze-thaw split experiment: it is recorded referring in " JTG E20-2011 highway engineering pitch and Asphalt Mixture Experiment regulation "
" experiment of T0729-2000 asphalt freeze-thaw split ".Carry out the freeze-thaw split experiment of asphalt sample.
(1) laboratory sample: Examples 1 to 6, embodiment 18~19, embodiment 22~25, comparative example 1~3, comparative example 12
~13, comparative example 18~22.
(2) experimental result:
Comparative example 1~3 is under different ratio with polyimides/montmorillonite-based nano composite wood of different quality ratio
The cleavage strength of the pitch of material is different, and when the mass ratio of Advance in Polyimide/Montmorillonite Nanocomposites is 1, the splitting of pitch is strong
Degree preferably, and is imitated when the too small cleavage strength for pitch of mass ratio of Advance in Polyimide/Montmorillonite Nanocomposites has to weaken
Fruit, but when the mass ratio of Advance in Polyimide/Montmorillonite Nanocomposites increases to 2, the cleavage strength increase of pitch can be neglected
Slightly disregard.
Comparative example 2, embodiment 4~6, comparative example 2, comparative example 3, it was demonstrated that when polyimides/montmorillonite-based nano is multiple
When condensation material mass ratio is reduced, the cleavage strength of pitch has the trend weakened, and works as polyimides/montmorillonite-based nano composite wood
Material mass ratio continues growing after being greater than 1 and the enhancing of the cleavage strength of pitch is not obvious.
Comparative example 1, embodiment 2 are compared, the cleavage strength of the pitch with Advance in Polyimide/Montmorillonite Nanocomposites is bright
Aobvious enhancing, it was demonstrated that Advance in Polyimide/Montmorillonite Nanocomposites has facilitation for the cleavage strength of pitch.
Comparative example 2, embodiment 18~19, comparative example 12, after rubber powder is added in discovery, the freeze-thaw split intensity of pitch
It is remarkably reinforced.With the increase of rubber powder amount, pitch freeze-thaw split intensity is remarkably reinforced.Illustrate rubber powder for asphalt road
The cryoprotective effects in face have certain reinforcing effect, but rubber powder itself does not have pitch the effect for improving its anti-freezing property
Fruit.Then think that rubber powder is mentioned by promoting Advance in Polyimide/Montmorillonite Nanocomposites to reach the cryoprotective effects of pitch
High pitch cryoprotective effects.
Comparative example 2, comparative example 13, when rubber powder mass parts are 35, rubber powder itself can not change pitch
Freeze-thaw split intensity illustrates that rubber powder excessively has adverse effect the anti-freezing property of pitch itself.
Comparison is embodiment 2, embodiment 22~23, comparative example 18, comparative example 19, finds the addition of benzoyl oxide for drip
The cleavage strength on green road surface has facilitation effect, and benzoyl oxide itself does not have the function of enhancing pitch cleavage strength, then it is assumed that
Benzoyl oxide enhances the effect of Advance in Polyimide/Montmorillonite Nanocomposites.And with the increase of benzoyl oxide amount, pitch
Cleavage strength gradually increase.But after the mass ratio of benzoyl oxide is greater than 2, the cleavage strength of pitch increases unobvious.Then recognize
For benzoyl oxide mass parts zone of reasonableness 0.8~2.
Comparative example 2, comparative example 18, comparative example 20, benzoic acid also have effect same as benzoyl oxide.
Comparative example 2, embodiment 24~25, comparative example 21~22, pitch between mass ratio 60~83 when, with
There are raised trend for the cleavage strength of the increase pitch of the amount of pitch itself, but differ unobvious.Illustrate mass ratio 60~
In the range between 83, pitch amount is more, and pitch anti-freezing property is better.After taking on asphalt quality ratio less than 60 or after being greater than 83, pitch
Anti-freezing property have reducing tendency.Then thinking that the mass ratio of pitch is limited between 60~83 is a good selection.
Design asphalt viscosity experiment: referring to T0621 in " JTJ052 highway engineering pitch and Asphalt Mixture Experiment regulation "
" design asphalt viscosity test " carries out design asphalt viscosity experiment.
(1) laboratory sample: embodiment 2, embodiment 7~12, embodiment 16~17, comparative example 4~5, comparative example 8~11.
(2) experimental result:
The Drain time of comparative example 2, embodiment 7~9, comparative example 5, pitch increases with the increase of PE amount of resin
Add, illustrates that the normal viscosity of the more pitches of PE resin content in pitch is higher.When PE resin quality part is less than 15 for drip
The increase effect of green normal viscosity is significantly worse than PE resin of the mass parts greater than 15 for the normal viscosity gain effect of pitch.When
When PE resin quality part is greater than 20, design asphalt viscosity obviously weakens.Then think the mass parts of PE resin be limited to 15~20 compared with
It is good.
Comparative example 2, embodiment 11, comparative example 4, the standard for showing that addition resin can improve pitch in pitch are glued
Degree.And PE resin is good with respect to the effect of PET resin.
Comparison is embodiment 10~12, as the normal viscosity of the increase pitch of PET resin amount is gradually increasing, then PET tree
The normal viscosity of the more pitches of rouge content in pitch is higher.
Illustrate that addition PET resin, PE resin can improve design asphalt viscosity, and design asphalt viscosity is with PET resin
Or PE resin quality ratio rising and rise.And PET resin is weak with respect to PE resin for the facilitation effect of design asphalt viscosity.
Pitch infiltration experiment: it takes with a thickness of 15cm, the bitumen layer block that area is 100 square centimeters is immersed in and does not cross pitch
Bitumen layer block is taken out in the pond of layer after 2h, weighs bitumen layer weight gain.
(1) laboratory sample: embodiment 2, embodiment 13~15, comparative example 6~7.
(2) experimental result:
Comparative example 2, comparative example 6, it was demonstrated that after polyurethane is added, pitch infiltration effect obviously weakens, then illustrates poly- ammonia
The addition of ester is so that pitch is waterproof.To reduce water content in cold snap bitumen layer.So that bitumen layer has preferably
Cryoprotective effects.
Comparative example 2, embodiment 13~15, comparative example 7, discovery are penetrated into bitumen layer with the increase of polyurethane amount
Moisture total amount gradually decreases.But after polyurethane mass ratio is greater than 10, pitch ontology permeability rate has more obvious reduction, load
The decline of pitch ontology permeability rate is unobvious after polyurethane mass ratio is greater than 15, then in order to save the addition quality of cost polyurethane
Part can be limited between 10~15.
Bituminous stabilized experiment: take same thickness, onesize, different formulations asphalt blocks (such as 1 square metre and with a thickness of
The asphalt blocks of 15cm), it is placed in external environment place of being easily exposed to the sun, guarantees intensity of illumination and light application time phase suffered by every piece of pitch
Together, the degree of injury of pitch itself, the bellding degree of pitch are observed.
(1) laboratory sample: embodiment 2, embodiment 16~17, embodiment 24~25, comparative example 8~11, comparative example 21~
22。
(2) experimental result:
Comparative example 2, embodiment 16~17, comparative example 9, it was demonstrated that lignocellulosic, which has the stability of pitch, to be promoted
Into effect, the pitch added with lignocellulosic is hardly damaged, is more durable.Simultaneously with the increase of lignocellulosic, pitch
The durability of ontology gradually increases.But when the mass parts of lignocellulosic are greater than 0.5, the viscosity of pitch generates downward trend,
But durability facilitation effect when lignocellulosic mass ratio is less than 0.7 for pitch is still obvious, then it is assumed that wooden fibre
Dimension element mass parts be scheduled on 0.1~0.7 but 0.1~0.5 preferably.
Comparative example 2, comparative example 10~11, it was demonstrated that after lignocellulosic additional amount excessive (mass parts are greater than 0.7), drip
Green block is easier to be damaged, and illustrates that the addition of lignocellulosic can not be excessive.Simultaneously the viscosity of pitch is weakened.Further prove
There are optimum range for the mass parts of lignocellulosic.
The experiment of diluent dilution effect: being added diluent according to the proportion, observes the tune of diluent degree thick for pitch
Save effect.
(1) laboratory sample: embodiment 2, embodiment 20, embodiment 21, comparative example 14~17.
(2) experimental result:
Comparative example 2, embodiment 20~21, comparative example 14, comparative example 15 find isoamyl acetate, pitch are deposited
In dilution effect, and the more pitches of isoamyl acetate are diluter.But when the amount of isoamyl acetate addition excessive (mass parts 60)
The mobility of pitch itself is unfavorable for by force very much constructing, and the too dilute asphalt thickness for making single layer after asphalt paving of pitch is small.
Comparative example 2, comparative example 14, comparative example 16~17, discovery isobutyl acetate, the different ethylpropylene of acetic acid are for
Pitch has dilution effect, but the dilution effect of isobutyl acetate is slightly worse, the dilution effect of the different ethylpropylene of acetic acid is worst.It compares
Under selection isoamyl acetate it is preferable.
Table two: the physicochemical property test of blacktop
Claims (7)
1. a kind of anti-freezing asphalt road, including base, blacktop, which is characterized in that the blacktop, which forms, includes,
In parts by mass: 60 ~ 83 parts of pitch, 5 ~ 15 parts of polyurethane, 10 ~ 20 parts of resin, 18 ~ 40 parts of diluent, 0.8 ~ 2 part of adjuvant,
0.5 ~ 2 part of Advance in Polyimide/Montmorillonite Nanocomposites, 0.1 ~ 0.7 part of stabilizer；The adjuvant is benzoyl oxide or benzene first
Acid is one such or two kinds.
2. a kind of anti-freezing asphalt road according to claim 1, which is characterized in that in the blacktop composition, press
Mass parts meter: 60 ~ 83 parts of pitch, 15 ~ 20 parts of resin, 18 ~ 40 parts of diluent, 0.8 ~ 2 part of adjuvant, gathers 10 ~ 15 parts of polyurethane
0.5 ~ 1 part of acid imide/Nano composite material of montmorillonite, 0.1 ~ 0.5 part of stabilizer.
3. a kind of anti-freezing asphalt road according to claim 1, which is characterized in that the pitch is asphalt.
4. a kind of anti-freezing asphalt road according to claim 1, which is characterized in that the stabilizer is lignocellulosic.
5. a kind of anti-freezing asphalt road according to claim 1, which is characterized in that the blacktop, which forms, further includes
The rubber powder that mass parts are 15 ~ 25 parts.
6. a kind of anti-freezing asphalt road according to claim 1, which is characterized in that the diluent be isoamyl acetate,
The different ethylpropylene of isobutyl acetate, acetic acid is one such or several.
7. a kind of anti-freezing asphalt road according to claim 1, which is characterized in that the resin is PE resin or PET tree
Rouge.
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| CN107879675B (en) * | 2017-11-22 | 2020-10-09 | 赵远梅 | Antifreezing asphalt concrete composition and preparation method thereof |
| CN110437635A (en) * | 2019-08-07 | 2019-11-12 | 启东市建筑设计院有限公司 | A kind of antifreeze rock wool pitch of high waterproof |
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| CN103059589A (en) * | 2012-12-28 | 2013-04-24 | 中国铁道科学研究院金属及化学研究所 | Emulsified asphalt for ballastless slab track in severe cold region and preparation method thereof |
| CN105884265A (en) * | 2016-04-22 | 2016-08-24 | 四川航天五源复合材料有限公司 | Asphalt mixture pavement |
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