CN110171937A - The modified Warm-Mix Bitumen Mixture of a kind of warm-mixing agent, SBS/SBR and preparation method - Google Patents
The modified Warm-Mix Bitumen Mixture of a kind of warm-mixing agent, SBS/SBR and preparation method Download PDFInfo
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- CN110171937A CN110171937A CN201811311124.6A CN201811311124A CN110171937A CN 110171937 A CN110171937 A CN 110171937A CN 201811311124 A CN201811311124 A CN 201811311124A CN 110171937 A CN110171937 A CN 110171937A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Abstract
The invention discloses a kind of warm-mixing agent, the modified Warm-Mix Bitumen Mixture of SBS/SBR and preparation methods, belong to technical field of road construction.The warm-mixing agent includes aromatic naphtha, white lime and quaternary ammonium salt surface active agent；Modified warm-mixed asphalt includes matrix pitch, SBS or SBR and aforementioned warm-mixing agent；Modified Warm-Mix Bitumen Mixture includes modified warm-mixed asphalt, gather materials, miberal powder and bitumen.For Warm-Mix Bitumen Mixture of the invention while guaranteeing high and low temperature performance, mix and forming temperature compared to similar hot-mix asphalt mixture reduce by 35 DEG C or more, while reducing energy consumption, reduce the discharge of pernicious gas, are good for the environment.
Description
Technical field
The present invention relates to Warm-Mix Bitumen Mixtures in technical field of road construction more particularly to road engineering, and in particular to
The modified Warm-Mix Bitumen Mixture of a kind of warm-mixing agent, SBS/SBR and preparation method.
Background technique
The asphalt used in road engineering is generally divided into two types according to construction temperature: hot-mix asphalt mixture
With cold-mix asphalt mixture.Hot-mix asphalt mixture is widely used in road construction, however as environmental ecology ecological requirements,
Hot-mix asphalt mixture is because the defect of high pollution, high energy consumption prevents it from the requirement that continues to meet social production, and phase therewith
Although anti-cold-mix asphalt mixture low pollution, low energy consumption, its comprehensive performance is lower, also not can guarantee construction quality.20 generation
It records the later period nineties, the developed countries such as America and Europe propose the concept of Warm-Mix Bitumen Mixture to protect environment, energy saving.
Compared to hot-mix asphalt mixture, Warm-Mix Bitumen Mixture can reduce the discharge of energy consumption and pernicious gas in production process
Amount；It, can be to avoid the problems such as asphalt early strength is relatively low, pavement performance is poor compared to cold-mix asphalt mixture.
Polymer SBS or SBR become research because that can improve the high temperature performance and temperature-sensitive performance of pitch simultaneously
With apply most asphalt modifiers, and the layer that the upper surface of is widely used in asphalt pavement structural layer.Currently, Polymer SBS or
SBR modifying agent is mainly used for modified 70# matrix pitch, and when preparing asphalt, the pitch processing temperature being modified is generally high
Up to 180 DEG C, the heating temperature gathered materials more is up to 190 DEG C~220 DEG C, is mainly used for the preparation of hot-mix asphalt mixture.
It is more suitable for construction usage, energy saving, the superior Warm-Mix Bitumen Mixture of environmental ecology index to obtain, one
As can on the basis of hot-mix asphalt mixture, be added warm-mixing agent, existing warm-mixing agent include sasobit, sasowam,
REDISET, Asphaltan-B etc.；However, the hot asphalt prepared for above-mentioned SBS modified pitch or SBR modified pitch mixes
For material, it is directly added into single warm-mixing agent, although can reduce mix temperature, limited extent is reduced, can only generally drop
Low 10-15 DEG C, and the high and low temperature service performance of asphalt can decrease, it is difficult to reach the property of Warm-Mix Bitumen Mixture
It can require.Further, since the reduction of mix temperature, by the modified 70# matrix pitch of SBS or SBR for Warm-Mix Bitumen Mixture
It, can be because of the viscosity characteristics of 70# matrix pitch, it is difficult to guarantee or be promoted the performance requirement of asphalt when preparation.
It is suitable for the modified Warm-Mix Bitumen Mixture warm-mixing agent of SBS or SBR currently, developing, and is mixed for warm-mixed asphalt
Mix temperature is effectively reduced while the high and low temperature service performance for not influencing asphalt in the preparation of material, energy saving,
Eliminate environmental pollution and injury of human, it has also become be modified the hot spot of Warm-Mix Bitumen Mixture development at this stage.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of warm-mixing agents, the modified Warm-Mix Bitumen Mixture of SBS/SBR
And preparation method；The warm-mixing agent is suitable for being used for the preparation of Warm-Mix Bitumen Mixture by SBS or SBR modified matrix pitch, is protecting
While card asphalt mixes and stirs temperature and is greatly lowered, the high and low temperature service performance of asphalt is excellent, solves existing
There is the problem of technology.
The technical solution adopted by the present invention are as follows:
A kind of warm-mixing agent, by percentage to the quality, including following component:
Aromatic naphtha 86%~94%, quaternary ammonium salt surface active agent 2%~6%, white lime 4%~8%.
The content of aromatic hydrocarbon is higher than 80% in the aromatic naphtha, and the content of ash content is lower than 0.1%, and the content of moisture is lower than
1%.
The preparation method of above-mentioned warm-mixing agent, including following operating procedure:
By above-mentioned mass percent, aromatic naphtha is heated to 80 DEG C~130 DEG C, adds white lime and quaternary ammonium salt surface
Activating agent, stir 5~15 minutes to get.
A kind of modified Warm-Mix Bitumen Mixture of the SBS/SBR made from above-mentioned warm-mixing agent, by percentage to the quality, including such as
Lower component:
The modified warm-mixed asphalt 5.5%~6% of SBS or SBR, 81%~86.5%, miberal powder 7%~13% that gathers materials, natural drip
Blueness 0~1%；
The modified warm-mixed asphalt of the SBS or SBR is made of following component: by mass percentage,
Matrix pitch 86%~92%, SBS or SBR 2%~4%, warm-mixing agent 6%~10%；
The warm-mixing agent include aromatic naphtha 86%~94%, quaternary ammonium salt surface active agent 2%~6%, white lime 4%~
8%.
The matrix pitch is 110# or more matrix pitch.
Described to gather materials for basalt, the proportion gathered materials is intensively with one of SMA series or AC series.
The partial size of the bitumen is 200~600 mesh, and content of ashes is 15%~20%.
Above-mentioned warm-mixing agent is preparing the application in modified Warm-Mix Bitumen Mixture.
The preparation method of the modified Warm-Mix Bitumen Mixture of above-mentioned SBS/SBR, including following operating procedure:
(1) above-mentioned mass percent is pressed, aromatic naphtha is heated to 80 DEG C~130 DEG C, adds white lime and quaternary ammonium salt
Surfactant stirs 5~15 minutes, obtains warm-mixing agent, spare；
(2) SBS or SBR are added to temperature is in 130 DEG C~150 DEG C of matrix pitch, using shear agitation, when shearing
Between be 30~60 minutes, obtain SBS modified pitch or SBR modified pitch；SBS modified pitch or SBR modified pitch are heated to
120 DEG C~150 DEG C, warm-mixing agent made from step (1) is added, using shear agitation, shear time is 5~10 minutes to get SBS
Modified warm-mixed asphalt or the modified warm-mixed asphalt of SBR；
(3) above-mentioned mass percent is pressed, bitumen and gathering materials is added to temperature is 145 DEG C~155 DEG C and mix in pot,
It mixes and stirs 90 seconds, obtains mixture A；
(4) the modified warm-mixed asphalt of SBS made from step (2) or the modified warm-mixed asphalt of SBR are added to the mixing of step (3)
Expect mix 90 seconds, to obtain mixture B in A；
(5) finally, miberal powder is added into the mixture B of step (4), continue to mix and stir 90 seconds and be mixed to get modified warm-mixed asphalt
Close material.
Step (3) bitumen and to gather materials mixing the heating temperature in pot be 155 DEG C, the modified temperature of step (4) SBS or SBR
The heating temperature for mixing pitch is 140 DEG C~150 DEG C.
The beneficial effects of the present invention are:
1, the modified Warm-Mix Bitumen Mixture of SBS/SBR of the invention, it is modified by the way that the SBS prepared by compound warm-mixing agent is added
The modified warm-mixed asphalt of warm-mixed asphalt or SBR, with gather materials, miberal powder and bitumen cooperate, greatly reduce mix temperature and molding
Temperature reduces the discharge of pernicious gas while reducing energy consumption；Solve existing hot-mix asphalt mixture be directly added into it is existing
Warm-mixing agent, the problem that cooling extent is limited and performance of asphalt mixture is bad, the hot asphalt modified compared to former SBR or SBS
The mix temperature of mixture reduces 35 DEG C~45 DEG C, and forming temperature reduces 35 DEG C~45 DEG C.
2, component cooperation science, the preparation process of the modified Warm-Mix Bitumen Mixture of SBS/SBR of the invention are simple, are conducive to
The use of different construction conditions.
3, SBS/SBR of the invention is modified the property retention of the Warm-Mix Bitumen Mixture performance of hot-mix asphalt mixture,
It ensure that the practicability of asphalt.The matrix pitch that the present invention uses for the matrix pitch of 110# or more, compared to SBS or
SBR modifying agent is mainly used for 70# matrix pitch and prepares hot-mix asphalt mixture, and 110# or more matrix pitch is softer, high-temperature behavior
Difference but low temperature performance well, when producing asphalt, same temperature, 110# or more pitch viscosity is low, good fluidity,
Preparation suitable for Warm-Mix Bitumen Mixture of the present invention.
4, warm-mixing agent of the invention uses composite parts, is added on the basis of quaternary ammonium salt surface active agent a certain amount of
Aromatic naphtha and white lime, guarantee warm-mixing agent temperature reduction performance while, improve asphalt anti-water damage property and
High temperature rutting resistance；The high temperature viscosity of SBS modified pitch or SBR modified pitch, season can be effectively reduced in aromatic naphtha therein
It is wrapped to what is gathered materials to improve pitch that ammonium type surfactant can reduce the high temperature viscosity of pitch by way of foaming,
White lime can improve the adhesiveness of asphalt and aggregate, and the warm-mixing agent that three cooperates as Warm-Mix Bitumen Mixture can
Significantly improve the service performance of asphalt.
Specific embodiment
Below with reference to the embodiment technical solution that the present invention will be described in detail, but the present invention is not limited to following embodiments.
Embodiment 1
The preparation of warm-mixing agent: by weight percent, take respectively 94% aromatic naphtha, 4% white lime and 2% quaternary ammonium salt
Aromatic naphtha is heated to 80~130 DEG C by class surfactant, after white lime and quaternary ammonium salt surface active agent are added to aromatic hydrocarbons
In oil, stirs 5~15 minutes, obtain warm-mixing agent.
The preparation of the modified warm-mixed asphalt of SBS: by weight percent, 86% 110# matrix pitch, 4% SBS are taken respectively
Modifying agent, 10% warm-mixing agent；By 110# matrix pitch, being heated to temperature is 130~150 DEG C, and then SBS modifier is added
Into 110# matrix pitch, SBS modified pitch is obtained within shear agitation 30~60 minutes；Finally by aforementioned warm-mixing agent, it is added to SBS
In modified pitch, continue shear agitation 5~10 minutes, obtains the modified warm-mixed asphalt of SBS.
The preparation of the modified Warm-Mix Bitumen Mixture of SBS: will gather materials is configured to SMA-10 type and gathers materials, by weight percent, point
Do not take 81% to gather materials, the modified warm-mixed asphalt of 6% SBS and 13% miberal powder.It will gather materials first and exist with the modified warm-mixed asphalt of SBS
Temperature is secondly to be added miberal powder mix 90 seconds mix 90 seconds at 145 DEG C, obtains the modified Warm-Mix Bitumen Mixture of SBS.It will modified temperature
It mixes asphalt and is prepared into various bitumen mixture specimens, then be modified Warm-Mix Bitumen Mixture benchmark test, tie
Fruit is shown in Table 1.Wherein, gathering materials with the heating temperature of miberal powder is 155 DEG C, and the heating temperature of the modified warm-mixed asphalt of SBS is 150 DEG C, examination
Part forming temperature is 135 DEG C.
Embodiment 2
The preparation of warm-mixing agent: by weight percent, take respectively 86% aromatic naphtha, 8% white lime and 6% quaternary ammonium salt
Aromatic naphtha is heated to 80~130 DEG C by class surfactant, after white lime and quaternary ammonium salt surface active agent are added to aromatic hydrocarbons
In oil, stirs 5~15 minutes, obtain warm-mixing agent.
The preparation of the modified warm-mixed asphalt of SBR: by weight percent, 92% 130# matrix pitch, 2% SBR are taken respectively
Modifying agent, 6% warm-mixing agent；By 130# matrix pitch, being heated to temperature is 130~150 DEG C, and then SBR modifying agent is added
Into 130# matrix pitch, SBR modified pitch is obtained within shear agitation 30~60 minutes；Finally by aforementioned warm-mixing agent, it is added to SBR
In modified pitch, continue shear agitation 5~10 minutes, obtains the modified warm-mixed asphalt of SBR.
The preparation of the modified Warm-Mix Bitumen Mixture of SBR: will gather materials is configured to AC-13 type and gathers materials, and claims respectively by mass fraction
Take 86.5% to gather materials, the modified warm-mixed asphalt of 5.5% SBR, 7% miberal powder and 1% bitumen；It will gather materials first and day
Right pitch is 150 DEG C in temperature and mixes mix 90 seconds in pot, SBR is secondly added modified warm-mixed asphalt mix 90 seconds, finally again plus
Enter miberal powder mix 90 seconds, obtains the modified Warm-Mix Bitumen Mixture of SBR.Mixture is prepared into various bitumen mixture specimens, then
Performance of asphalt mixture evaluation test is carried out, the results are shown in Table 1.Wherein, gathering materials with the heating temperature of miberal powder is 155 DEG C, pitch
Heating temperature is 140 DEG C, and specimen molding temperature is 140 DEG C.
Embodiment 3
The preparation of warm-mixing agent: by weight percent, take respectively 90% aromatic naphtha, 6% white lime and 4% quaternary ammonium salt
Aromatic naphtha is heated to 80~130 DEG C by class surfactant, after white lime and quaternary ammonium salt surface active agent are added to aromatic hydrocarbons
In oil, stirs 5~15 minutes, obtain warm-mixing agent.
The preparation of the modified warm-mixed asphalt of SBS: by weight percent, 89% 110# matrix pitch, 3% SBS are taken respectively
Modifying agent, 8% warm-mixing agent；By 110# matrix pitch, being heated to temperature is 130~150 DEG C, and then SBS modifier is added
Into 110# matrix pitch, SBS modified pitch is obtained within shear agitation 30~60 minutes；Finally by aforementioned warm-mixing agent, it is added to SBS
In modified pitch, continue shear agitation 5~10 minutes, obtains the modified warm-mixed asphalt of SBS.
The preparation of the modified Warm-Mix Bitumen Mixture of SBS: will gather materials is configured to SMA-16 type and gathers materials, and claims respectively by mass fraction
Take 83.8% to gather materials, the modified warm-mixed asphalt of 5.7% SBS, 10% miberal powder and 0.5% bitumen；It will gather materials first
It is 155 DEG C in temperature with bitumen and mixes mix 90 seconds in pot, SBS is secondly added modified warm-mixed asphalt mix 90 seconds, finally
It adds miberal powder mix 90 seconds, obtains the modified Warm-Mix Bitumen Mixture of SBS.Mixture is prepared into various asphalt examinations
Part, then performance of asphalt mixture evaluation test is carried out, it the results are shown in Table 1.Wherein, gathering materials with the heating temperature of miberal powder is 155 DEG C, drip
Green heating temperature is 145 DEG C, and specimen molding temperature is 145 DEG C.
Embodiment 4
The preparation of warm-mixing agent: by weight percent, take respectively 92% aromatic naphtha, 5% white lime and 3% quaternary ammonium salt
Aromatic naphtha is heated to 80~130 DEG C by class surfactant, after white lime and quaternary ammonium salt surface active agent are added to aromatic hydrocarbons
In oil, stirs 5~15 minutes, obtain warm-mixing agent.
The preparation of the modified warm-mixed asphalt of SBR: by weight percent, 90% 130# matrix pitch, 3% SBR are taken respectively
Modifying agent, 7% warm-mixing agent；By 130# matrix pitch, being heated to temperature is 130~150 DEG C, and then SBR modifying agent is added
Into 130# matrix pitch, SBR modified pitch is obtained within shear agitation 30~60 minutes；Finally by aforementioned warm-mixing agent, it is added to SBR
In modified pitch, continue shear agitation 5~10 minutes, obtains the modified warm-mixed asphalt of SBR.
The preparation of the modified Warm-Mix Bitumen Mixture of SBR: will gather materials is configured to AC-20 type and gathers materials, and claims respectively by mass fraction
Take 82.8% to gather materials, the modified warm-mixed asphalt of 5.8% SBR, 11% miberal powder and 0.4% bitumen；Complete preamble work
After work, it will gather materials first and bitumen be 150 DEG C in temperature and mix mix 90 seconds in pot, the modified warm mix drip of SBR is secondly added
Green mix 90 seconds, finally adds miberal powder mix 90 seconds, obtains the modified Warm-Mix Bitumen Mixture of SBR.Mixture is prepared into respectively
Kind bitumen mixture specimen, then performance of asphalt mixture evaluation test is carried out, it the results are shown in Table 1.The heating wherein gathered materials with miberal powder
Temperature is 145 DEG C, and the heating temperature of pitch is 145 DEG C, and specimen molding temperature is 140 DEG C.
Comparative example 1
The preparation of SBS modified pitch: weighing the 110# matrix pitch that mass fraction is 95% first and being heated to temperature is 130
~150 DEG C, secondly the SBS modifier that mass fraction is 5% is added to shear agitation 30~60 minutes in matrix pitch and is obtained
SBS modified pitch.
The preparation of SBS modified asphalt mixture: by taking SMA-13 gathers materials as an example, 86.5% collection is weighed respectively by mass fraction
Material, the modified warm-mixed asphalt of 6.5% SBS and 7% miberal powder, will gather materials first with the modified warm-mixed asphalt of SBS in temperature is 190 DEG C
Secondly lower mix 90 seconds is added miberal powder mix 90 seconds, obtain the modified Warm-Mix Bitumen Mixture of SBS.Mixture is prepared into various
Bitumen mixture specimen, then performance of asphalt mixture evaluation test is carried out, it the results are shown in Table 1.The heating temperature wherein gathered materials with miberal powder
Degree is 200 DEG C, and the heating temperature of pitch is 180 DEG C, and specimen molding temperature is 180 DEG C.
Comparative example 2
The preparation of warm-mixing agent: aromatic naphtha is only added according to the warm-mixing agent match ratio in embodiment 3 and quaternary ammonium salt surface is living
Property agent, by aromatic naphtha heating temperature to 80~130 DEG C, after quaternary ammonium salt surface active agent is added into aromatic naphtha, stirring 5~
15 minutes, obtain warm-mixing agent.
The preparation of the modified warm-mixed asphalt of SBR: the 110# matrix pitch that mass fraction is 90% is weighed first and is heated to temperature
It is 130~150 DEG C, the SBR modifying agent that mass fraction is 3% is secondly added to shear agitation 30~60 minutes in matrix pitch
SBR modified pitch is obtained, finally the warm-mixing agent that mass fraction is 7% is added in pitch, continues 5~10 points of shear agitation
Clock obtains the modified warm-mixed asphalt of SBR.
The preparation of the modified Warm-Mix Bitumen Mixture of SBR: will gather materials is configured to SMA-16 type and gathers materials, then by mass fraction point
Also known as take 82.6% to gather materials, the modified warm-mixed asphalt of 6% SBR, 11% miberal powder and 0.4% bitumen, first will collection
Material and bitumen are 155 DEG C in temperature and mix mix 90 seconds in pot, SBR are secondly added modified warm-mixed asphalt mix 90 seconds, most
After add miberal powder mix 90 seconds, obtain the modified Warm-Mix Bitumen Mixture of SBR.Mixture is prepared into various asphalt examinations
Part, then performance of asphalt mixture evaluation test is carried out, it the results are shown in Table 1.
Comparative example 3
The preparation of the modified warm-mixed asphalt of SBS: the 110# matrix pitch that mass fraction is 89% is weighed first and is heated to temperature
It is 130~150 DEG C, the SBS modifier that mass fraction is 3% is secondly added to shear agitation 30~60 minutes in matrix pitch
SBS modified pitch is obtained, finally the aromatic naphtha that mass fraction is 8% is added in pitch, continues 5~10 points of shear agitation
Clock obtains the modified warm-mixed asphalt of SBS.
The preparation of the modified Warm-Mix Bitumen Mixture of SBS: will gather materials is configured to AC-20 type and gathers materials, and claims respectively by mass fraction
Take 83.8% to gather materials, the modified warm-mixed asphalt of 5.7% SBS, 10% miberal powder and 0.5% bitumen.It will gather materials first
It is 165 DEG C in temperature with bitumen and mixes mix 90 seconds in pot, SBS is secondly added modified warm-mixed asphalt mix 90 seconds, finally
It is added miberal powder mix 90 seconds, obtains the modified Warm-Mix Bitumen Mixture of SBS.Mixture is prepared into various bitumen mixture specimens,
Performance of asphalt mixture evaluation test is carried out again, the results are shown in Table 1.
Comparative example 4
The preparation of the modified warm-mixed asphalt of SBS: the 110# matrix pitch that mass fraction is 94% is weighed first and is heated to temperature
It is 130~150 DEG C, the SBS modifier that mass fraction is 4% is secondly added to shear agitation 30~60 minutes in matrix pitch
SBS modified pitch is obtained, finally the quaternary ammonium salt surface active agent that mass fraction is 2% is added in pitch, continues to shear
Stirring 5~10 minutes obtains the modified warm-mixed asphalt of SBS.
The preparation of the modified Warm-Mix Bitumen Mixture of SBS: will gather materials is configured to AC-20 type and gathers materials, and claims respectively by mass fraction
Take 84.1% to gather materials, the modified warm-mixed asphalt of 5.4% SBS, 9.5% miberal powder and 1% bitumen.To gather materials first with
Bitumen is 165 DEG C in temperature and mixes mix 90 seconds in pot, SBS is secondly added modified warm-mixed asphalt mix 90 seconds, finally plus
Enter miberal powder mix 90 seconds, obtains the modified Warm-Mix Bitumen Mixture of SBS.Mixture is prepared into various bitumen mixture specimens, then
Performance of asphalt mixture evaluation test is carried out, the results are shown in Table 1.
1 Bituminous Mixture Ratio of table and performance
As shown in Table 1, the performance of asphalt is compared it can be found that in the premise for guaranteeing mixture high and low temperature performance
Under, the mix temperature and forming temperature of the modified Warm-Mix Bitumen Mixture of the present invention mix SBS/SBR than heat in comparative example 1 and are modified drip
Green mixture reduces by 35 DEG C~45 DEG C；The warm-mixing agent of comparative example 2 does not add white lime, although mix temperature can be reduced successfully,
But it can be seen that the anti-water damage property of asphalt well below various embodiments of the present invention from the performance of asphalt
Performance；Warm-mixing agent in comparative example 3 and comparative example 4 is respectively only with aromatic naphtha, quaternary ammonium salt surface active agent, two comparative examples
Mix, the compacting temperature of Asphalt Mixture are higher, are not able to satisfy the standard of Warm-Mix Bitumen Mixture, secondly, two groups of pitches
The high and low temperature performance and anti-water damage property of mixture are poor, far from the requirement for meeting specification.
Above-mentioned specific embodiment cannot function as limiting the scope of the invention, for the technology people of the art
For member, any alternate modification or transformation made to embodiment of the present invention are fallen within the scope of protection of the present invention.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art of the present technique.
Claims (10)
1. a kind of warm-mixing agent, it is characterised in that: by percentage to the quality, including following component:
Aromatic naphtha 86%~94%, quaternary ammonium salt surface active agent 2%~6%, white lime 4%~8%.
2. a kind of warm-mixing agent according to claim 1, it is characterised in that: the content of aromatic hydrocarbon is higher than in the aromatic naphtha
80%, the content of ash content is lower than 0.1%, and the content of moisture is lower than 1%.
3. a kind of preparation method of warm-mixing agent as described in claim 1, it is characterised in that: including following operating procedure:
By above-mentioned mass percent, aromatic naphtha is heated to 80 DEG C~130 DEG C, adds white lime and quaternary ammonium salt surface active
Agent, stir 5~15 minutes to get.
4. a kind of modified Warm-Mix Bitumen Mixture of SBS/SBR, it is characterised in that: with temperature of any of claims 1-3
Agent is mixed to be made.
5. the modified Warm-Mix Bitumen Mixture of SBS/SBR according to claim 4, it is characterised in that: by percentage to the quality,
Including following component:
The modified warm-mixed asphalt 5.5%~6% of SBS or SBR, 81%~86.5%, miberal powder 7%~13% that gathers materials, bitumen 0~
1%；
The modified warm-mixed asphalt of the SBS or SBR is made of following component: by mass percentage,
Matrix pitch 86%~92%, SBS or SBR 2%~4%, warm-mixing agent 6%~10%；
The warm-mixing agent includes aromatic naphtha 86%~94%, quaternary ammonium salt surface active agent 2%~6%, white lime 4%~8%.
6. the modified Warm-Mix Bitumen Mixture of SBS/SBR according to claim 4, it is characterised in that: the matrix pitch is
110# or more matrix pitch；Described to gather materials for basalt, the proportion gathered materials is intensive one in SMA series or AC series
Kind；The partial size of the bitumen is 200~600 mesh, and content of ashes is 15%~20%.
7. a kind of warm-mixing agent as described in any one of claims 1-3 is in preparing the modified Warm-Mix Bitumen Mixture of SBS/SBR
Using.
8. a kind of preparation method for being modified Warm-Mix Bitumen Mixture such as the described in any item SBS/SBR of claim 4-6, feature
It is: including following operating procedure:
(1) above-mentioned mass percent is pressed, aromatic naphtha is heated to 80 DEG C~130 DEG C, adds white lime and quaternary ammonium salt surface
Activating agent stirs 5~15 minutes, obtains warm-mixing agent, spare；
(2) SBS or SBR are added in the matrix pitch that temperature is 130 DEG C~150 DEG C, using shear agitation, shear time is
30~60 minutes, obtain SBS modified pitch or SBR modified pitch；SBS modified pitch or SBR modified pitch are heated to 120 DEG C
~150 DEG C, warm-mixing agent made from step (1) is added, using shear agitation, shear time is 5~10 minutes modified to get SBS
Warm-mixed asphalt or the modified warm-mixed asphalt of SBR；
(3) above-mentioned mass percent is pressed, bitumen and gathering materials is added to temperature is 145 DEG C~155 DEG C and mix in pot, mix and stir
90 seconds, obtain mixture A；
(4) the modified warm-mixed asphalt of SBS made from step (2) or the modified warm-mixed asphalt of SBR are added to the mixture A of step (3)
In, mix 90 seconds, obtain mixture B；
(5) finally, miberal powder is added into the mixture B of step (4), continue to mix and stir 90 seconds to get modified Warm-Mix Bitumen Mixture.
9. a kind of preparation method of the modified Warm-Mix Bitumen Mixture of SBS/SBR according to claim 8, it is characterised in that:
Step (3) bitumen and to gather materials mixing the heating temperature in pot be 155 DEG C, the modified warm-mixed asphalt of step (4) SBS or SBR change
Property warm-mixed asphalt heating temperature be 140 DEG C~150 DEG C.
10. a kind of preparation method of the modified Warm-Mix Bitumen Mixture of SBS/SBR according to claim 8, it is characterised in that:
The matrix pitch is 110# or more matrix pitch；Described to gather materials for basalt, the proportion gathered materials is intensively with SMA series
Or one of AC series；The partial size of the bitumen is 200~600 mesh, and content of ashes is 15%~20%.
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| CN111499268A (en) * | 2020-03-25 | 2020-08-07 | 长安大学 | Asphalt mixture for improving microwave absorption efficiency and preparation method thereof |
| CN112625451A (en) * | 2020-12-17 | 2021-04-09 | 黑龙江省公路勘察设计院 | Temperature-modified asphalt modifier |
| CN113444373A (en) * | 2021-06-03 | 2021-09-28 | 李威风 | Composition for modifying asphalt, modified asphalt, method for producing same, and asphalt mixture |
| CN113845780A (en) * | 2021-11-09 | 2021-12-28 | 山东高速济南绕城西线公路有限公司 | Low-energy-consumption energy-dissipation warm-mixing high-viscosity modified asphalt and preparation method and application thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499268A (en) * | 2020-03-25 | 2020-08-07 | 长安大学 | Asphalt mixture for improving microwave absorption efficiency and preparation method thereof |
| CN112625451A (en) * | 2020-12-17 | 2021-04-09 | 黑龙江省公路勘察设计院 | Temperature-modified asphalt modifier |
| CN113444373A (en) * | 2021-06-03 | 2021-09-28 | 李威风 | Composition for modifying asphalt, modified asphalt, method for producing same, and asphalt mixture |
| CN113444373B (en) * | 2021-06-03 | 2023-01-24 | 李威风 | Composition for modifying asphalt, modified asphalt, method for producing same, and asphalt mixture |
| CN113845780A (en) * | 2021-11-09 | 2021-12-28 | 山东高速济南绕城西线公路有限公司 | Low-energy-consumption energy-dissipation warm-mixing high-viscosity modified asphalt and preparation method and application thereof |
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| CN110171937B (en) | 2021-10-22 |
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