CN109535748A - A kind of composite modified pitch of high-performance mineral and preparation method - Google Patents
A kind of composite modified pitch of high-performance mineral and preparation method Download PDFInfo
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- CN109535748A CN109535748A CN201811287481.3A CN201811287481A CN109535748A CN 109535748 A CN109535748 A CN 109535748A CN 201811287481 A CN201811287481 A CN 201811287481A CN 109535748 A CN109535748 A CN 109535748A
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- pitch
- fine powder
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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
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
Abstract
The invention discloses a kind of composite modified pitches of high-performance mineral, the composite modified pitch of mineral is grouped as by the group of following parts by weight: 80~86 parts of matrix pitch, 2~6 parts of SBS modifier, 1~4 part of rubber fine powder, 8~14 parts of manganese slag fine powder, and disclose preparation method, first matrix pitch is heated, matrix pitch raw material is made and SBS modifier is added in flow regime matrix pitch, pitch colloid is maintained at 175 DEG C~190 DEG C sievings again, pitch colloid is sequentially added into manganese slag fine powder in the case where keeping 175 DEG C~190 DEG C states, rubber fine powder and stabilizer, and stir 2h；Finally the pitch colloid mixed is maintained under 175 DEG C~190 DEG C states and is developed；When smooth in surface after full grown pitch colloid is cooling, modified pitch is made.High-temperature stability, adhesiveness, malleable, anti-stress deformation and the durability of the effective modified pitch of the present invention make modified pitch have excellent pavement performance and higher cost performance.
Description
Technical field
The present invention relates to modified asphalt technology fields, and in particular to a kind of composite modified pitch of high-performance mineral and preparation side
Method.
Background technique
Bituminous pavement have surfacing, seamless, comfortable, the with small vibration, low noise of driving, it is wear-resisting, not fugitive dust easy cleaning,
Construction time is short, simple maintenance reproducible utilization, the advantages that being suitable for stage construction, be widely used in China's urban road and
In highway, there is 85% or more road surface using bituminous pavement in the urban road and highway that China is built up.With
The fast development of social economy, China's car ownership, which is continually incremented, promotes logistic industry with the Fast Growth of e-commerce
Swift and violent development, various large-scale, heavily loaded transport trucks frequently occur on urban road and highway, so that all kinds of roads
High frequency, heavily loaded development trend is presented in the vehicular load of road, and original bituminous pavement is common in high temperature, high frequency, heavy duty, rainwater etc.
Under ringing, deformation accelerates, and causes the diseases aggravation such as track, passage, loose, pit-hole, check crack and accelerates, to reduce drip
The use quality on green road surface shortens its service life, increases maintenance costs.Research has shown that, cause bituminous pavement deformation failure and
Moisture Damage immediate cause and bituminous pavement composition cementitious material pitch and gather materials it is related, in order to improve bituminous pavement adapt to society
Can economic development cause road surface vehicle-mounted high frequency, heavily loaded development trend demand, research and develop high under a kind of suitable hot humid climatic environment
Frequently, common objective of the high property asphalt pavement material as industry engineers and technicians, numerous scholars under the load actions such as heavy duty.Row
The numerous engineers and technicians of industry, scholar's performance for thinking promotion bituminous pavement cementitious material pitch consistent with expert are to solve currently
The loads collective effect such as high frequency, heavy duty causes one of Asphalt Pavement Damage and the approach of breakage under hot humid climatic environment.
Summary of the invention
It is an object of the invention to: in view of the above problems, provide a kind of composite modified pitch of high-performance mineral and
Preparation method, the present invention keep the original performance of SBS modified pitch a little on the basis of, utilize manganese slag fine powder high activity and mistake
Catalized effect and rubber fine powder elastomeric characteristic changing pitch colloform texture are crossed, to improve the high temperature of modified pitch
Stability, adhesiveness, malleable, anti-stress deformation and durability make modified pitch have excellent pavement performance and higher
Cost performance.In order to achieve the above-mentioned object of the invention, The technical solution adopted by the invention is as follows:
According to an aspect of the present invention, a kind of composite modified pitch of high-performance mineral is provided, which is characterized in that the mineral
Composite modified pitch is grouped as by the group of following parts by weight: 80~86 parts of matrix pitch, 2~6 parts of SBS modifying agent, and rubber fine powder
1~4 part, 8~14 parts of manganese slag fine powder.
Above scheme is it is further preferred that the matrix pitch is No. 70 Esso pitches.
Above scheme is it is further preferred that the manganese slag fine powder fineness is 200~220 mesh, and the manganese slag fine powder is by as follows
The group of weight is grouped as: SiO2 >=20.0%, Al2O3≤ 18.0%, CaO >=35.0%, MgO >=8.0%, Fe2O3≤
1.5%, SO3≤ 0.50%, MnO >=9.50%, Loss≤1.0%.
Above scheme is it is further preferred that the rubber fine powder fineness is 80 mesh~220 mesh, and the rubber fine powder is by as follows
The group of weight is grouped as: rubber hydrocarbon >=50.0%, carbon black≤35.0%, acetone pumping object≤13.0%, and natural rubber >=
60.0%, ash content≤3.5%, SiO2≤0.5%, ZnO≤1.2%, sulphur≤1.5%, chemical fibre >=3.0%.
According to another aspect of the present invention, a kind of composite modified pitch of high-performance mineral and preparation method thereof is provided, including
Following steps:
(1) it weighs by weight: 80~86 parts of matrix pitch, 2~6 parts of SBS modifier, 1~4 part of rubber fine powder, manganese slag
8~14 parts of fine powder；
(2) monolithic substrate pitch is heated, matrix pitch raw material is made；By blast furnace water quenching manganese dregs reject slag in temperature
110 DEG C ± 5 DEG C of drying in oven processing, is dried to moisture content less than 1%, the triethanolamine of outer manganese addition slag weight 0.5% helps
Grinding agent carries out levigate processing, and by manganese slag abrasive flour by 200 meshes, manganese slag fine powder modifying agent is made；Waste tire is made
Rubber powder, by rubber powder by 80 meshes, the rubber fine powder additive of system；
(3) SBS modifier is added with 3500r/min~5000r/min in 180 DEG C~190 DEG C flow regime matrix pitches
Speed shearing grinding 30min~60min；
(4) step (3) are ground into gained pitch colloid and is maintained at 175 DEG C~190 DEG C sievings；
(5) manganese slag is sequentially added into the case where keeping 175 DEG C~190 DEG C states in the resulting pitch colloid of step (4) sieving
Fine powder, rubber fine powder and stabilizer, and 2h is stirred with 3000r/min~5000r/min speed；
(6) the pitch colloid that step (5) mixes is maintained at development 5h~8h under 175 DEG C~190 DEG C states；
(7) when will be smooth in surface after the full grown pitch colloid cooling of step (6), modified pitch be made.
Above scheme refers to that being placed on 170 DEG C of insulating boxs is heated it is further preferred that heating in the step (2).
Above scheme is it is further preferred that the pitch colloid after referring to grinding that is sieved in the step (4) crosses 100-170
Mesh.
In the present invention, SBS modifier improves the softening power resistant to high temperatures and low-temperature ductility ability of matrix pitch, manganese slag
Fine powder, rubber fine powder and SBS modified pitch have good compatibility, and manganese slag fine powder is catalyzed unsaturated bond in SBS modified pitch
More resin and asphalts are broken to form, to improve the high-temperature stability of pitch, adhesiveness and durability.Meanwhile manganese slag
Resin and asphalt in fine powder, rubber fine powder and pitch interacts, and pitch micelle polarity is enhanced, and leads to colloform texture
It is changed into molten gel-type and gel-type from colloidal sol type, improves high temperature performance of asphalt, adhesiveness, malleable, anti-stress comprehensively and become
Shape and durability.Its high temperature can be improved comprehensively by SBS modifier, manganese slag fine powder, rubber fine powder doped matrix asphalt
Stability, adhesiveness, malleable, stress intensity and durability.
Waste residue of the manganese slag as production manganese metal and mn site doping, with the spies such as high activity, alkalescent, particle be thin
Point, is milled into fine powder, becomes a kind of good modified asphalt material.Its mechanism of modification are as follows: the manganese element in manganese slag fine powder
Belong to transition elements, transition elements has the valence layer d track complex easy to form of underfill, utilizes manganese element in manganese slag fine powder
It reacts with unsaturated bond in pitch and improves the content of resin and asphalt in pitch, so that effectively promoting it prepares pitch
The pavement performances such as response to temperature, adhesiveness, the weatherability of mixture.Meanwhile in order to promote the consistency of modified pitch and elasticity, changing
Property during add suitable rubber fine powder, to form the loads such as high frequency, heavy duty under a kind of suitable hot humid climatic environment
Act on the lower mineral modified pitch in road.
In conclusion above-mentioned technical proposal is used, the beneficial effects of the present invention are:
(1), the present invention is modified matrix pitch as modifying agent by using SBS, manganese slag fine powder, rubber fine powder,
The incorporation of SBS modifier improves the softening power resistant to high temperatures and low-temperature ductility ability of matrix pitch；The incorporation of manganese slag fine powder improves
Resin and asphalt content in SBS modified pitch improves the high-temperature stability, adhesiveness, anti-stress deformation of SBS modified pitch
Property；Rubber fine powder is incorporating modified and reinforcement SBS modified pitch, improves malleable, the anti-stress deformation of SBS modified pitch
Property, durability.To which Comprehensive improves matrix pitch high temperature, bonding, mechanics, endurance quality.Performance of modified bitumen is excellent, non-
It is very suitable for hot humid area bitumen pavement construction to be applicable in, there is good Technological Economy prospect.
(2), preparation method is simple for a kind of composite modified pitch blueness of high-performance mineral proposed by the present invention, convenient for pushing away
Extensively.The Properties of Modified Asphalt that the preparation method obtains is stable, uniform in material, and modified effect is excellent, practical.
(3), modified pitch proposed by the present invention is low in cost, and preparation process is simple, with good economic efficiency.Manganese slag
Fine powder be refine manganese resource generate it is discarded slag charge processes from strand, rubber fine powder is that discarded car tyres are process, pass through
Manganese slag and discarded car tyres solid waste regeneration are utilized, its hidden function is excavated, plays its performance speciality, make its resource
Change and utilize, to protection environment, economize on resources, realizes that sustainable development is of great significance.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, preferred embodiment is enumerated below, to this hair
Bright further description.However, it is necessary to illustrate, many details listed in specification are used for the purpose of making reader to this
The one or more aspects of invention have a thorough explanation, also may be implemented even without these specific details of the invention
These aspects.
Embodiment 1
According to an aspect of the present invention, this embodiment offers a kind of composite modified pitch of high-performance mineral and its preparations
Method includes the following steps:
(1) it weighs by weight: 86 parts of matrix pitch, 2 parts of SBS modifier, 2 parts of rubber fine powder, 8 parts of manganese slag fine powder, institute
Selecting matrix pitch is 70#A grades of bi tumenf orr oads of Esso that middle off-lying sea transports International Trading Company Ltd's import；
(2) monolithic substrate pitch is placed in 170 DEG C of insulating boxs to heat, matrix pitch raw material is made；By blast furnace water quenching
Manganese dregs reject slag is handled in 110 DEG C ± 5 DEG C of temperature of drying in oven, is dried to moisture content less than 1%, outer manganese addition slag weight
The triethanolamine grinding aid of amount 0.5% carries out levigate processing, by manganese slag abrasive flour by 200 meshes, manganese slag fine powder is made and changes
Property agent；By rubber powder made of waste tire, by rubber powder by 80 meshes, the rubber fine powder additive of system, then by manganese slag obtained
Fine powder, rubber fine powder, which are each placed in 165 DEG C of baking oven, bakes development 30min；
(3) SBS modifier is added in 180 DEG C of flow regime matrix pitches and grinding is sheared with the speed of 3500r/min
30min；
(4) step (3) are ground into gained pitch colloid and is maintained at 175 DEG C of sievings, sieving refers to the pitch colloid after grinding
It sieves with 100 mesh sieve；
(5) manganese slag fine powder, rubber are sequentially added into the case where keeping 175 DEG C of states in the resulting pitch colloid of step (4) sieving
Glue fine powder and stabilizer, and 2h is stirred with 3000r/min speed；
(6) the pitch colloid that step (5) mixes is maintained under 175 DEG C of states and develops 8h；
(7) when will be smooth in surface after the full grown pitch colloid cooling of step (6), modified pitch be made.
Embodiment 2
According to an aspect of the present invention, this embodiment offers a kind of composite modified pitch of high-performance mineral and its preparations
Method includes the following steps:
(1) it weighs by weight: 84 parts of matrix pitch, 4 parts of SBS modifier, 1 part of rubber fine powder, 12 parts of manganese slag fine powder, institute
Selecting matrix pitch is 70#A grades of bi tumenf orr oads of Esso that middle off-lying sea transports International Trading Company Ltd's import；
(2) monolithic substrate pitch is placed in 170 DEG C of insulating boxs to heat, matrix pitch raw material is made；By blast furnace water quenching
Manganese dregs reject slag is handled in 110 DEG C ± 5 DEG C of temperature of drying in oven, is dried to moisture content less than 1%, outer manganese addition slag weight
The triethanolamine grinding aid of amount 0.5% carries out levigate processing, by manganese slag abrasive flour by 200 meshes, manganese slag fine powder is made and changes
Property agent；By rubber powder made of waste tire, rubber powder is passed through into 80 meshes, the rubber fine powder additive of system；Again by manganese slag obtained
Fine powder, rubber fine powder, which are each placed in 165 DEG C of baking oven, bakes development 30min；
(3) SBS modifier is added in 190 DEG C of flow regime matrix pitches and grinding is sheared with the speed of 5000r/min
60min；
(4) step (3) are ground into gained pitch colloid and is maintained at 90 DEG C of sievings, sieving refers to the pitch colloid mistake after grinding
170 meshes；
(5) manganese slag fine powder, rubber are sequentially added into the case where keeping 190 DEG C of states in the resulting pitch colloid of step (4) sieving
Glue fine powder and stabilizer, and 2h is stirred with 5000r/min speed；
(6) the pitch colloid that step (5) mixes is maintained under 190 DEG C of states and develops 5h；
(7) when will be smooth in surface after the full grown pitch colloid cooling of step (6), modified pitch be made.
Embodiment 3
According to an aspect of the present invention, this embodiment offers a kind of composite modified pitch of high-performance mineral and its preparations
Method includes the following steps:
(1) it weighs by weight: 82 parts of matrix pitch, 6 parts of SBS modifier, 4 parts of rubber fine powder, 10 parts of manganese slag fine powder, institute
Selecting matrix pitch is 70#A grades of bi tumenf orr oads of Esso that middle off-lying sea transports International Trading Company Ltd's import；
(2) monolithic substrate pitch is placed in 170 DEG C of insulating boxs to heat, matrix pitch raw material is made；By blast furnace water quenching
Manganese dregs reject slag is handled in 110 DEG C ± 5 DEG C of temperature of drying in oven, is dried to moisture content less than 1%, outer manganese addition slag weight
The triethanolamine grinding aid of amount 0.5% carries out levigate processing, by manganese slag abrasive flour by 200 meshes, manganese slag fine powder is made and changes
Property agent；By rubber powder made of waste tire, rubber powder is passed through into 80 meshes, the rubber fine powder additive of system；Again by manganese slag obtained
Fine powder, rubber fine powder, which are each placed in 165 DEG C of baking oven, bakes development 30min；
(3) SBS modifier is added in 185 DEG C of flow regime matrix pitches and grinding is sheared with the speed of 4000r/min
40min；
(4) step (3) are ground into gained pitch colloid and is maintained at 185 DEG C of sievings, sieving refers to the pitch colloid after grinding
Cross 140 meshes；
(5) manganese slag fine powder, rubber are sequentially added into the case where keeping 185 DEG C of states in the resulting pitch colloid of step (4) sieving
Glue fine powder and stabilizer, and 2h is stirred with 4000r/min speed；
(6) the pitch colloid that step (5) mixes is maintained under 185 DEG C of states and develops 6h；
(7) when will be smooth in surface after the full grown pitch colloid cooling of step (6), modified pitch be made.
Embodiment 4
According to an aspect of the present invention, this embodiment offers a kind of composite modified pitch of high-performance mineral and its preparations
Method includes the following steps:
(1) it weighs by weight: 80 parts of matrix pitch, 4 parts of SBS modifier, 3 parts of rubber fine powder, 14 parts of manganese slag fine powder, institute
Selecting matrix pitch is 70#A grades of bi tumenf orr oads of Esso that middle off-lying sea transports International Trading Company Ltd's import；
(2) monolithic substrate pitch is placed in 170 DEG C of insulating boxs to heat, matrix pitch raw material is made；By blast furnace water quenching
Manganese dregs reject slag is handled in 110 DEG C ± 5 DEG C of temperature of drying in oven, is dried to moisture content less than 1%, outer manganese addition slag weight
The triethanolamine grinding aid of amount 0.5% carries out levigate processing, by manganese slag abrasive flour by 200 meshes, manganese slag fine powder is made and changes
Property agent；By rubber powder made of waste tire, rubber powder is passed through into 80 meshes, the rubber fine powder additive of system；Again by manganese slag obtained
Fine powder, rubber fine powder, which are each placed in 165 DEG C of baking oven, bakes development 30min；
(3) SBS modifier is added in 180 DEG C of flow regime matrix pitches and grinding is sheared with the speed of 4500r/min
50min；
(4) step (3) grinding gained pitch colloid is maintained under the conditions of 180 DEG C and is sieved, sieving refers to the drip after grinding
Green colloid crosses 160 meshes；
(5) manganese slag fine powder, rubber are sequentially added into the case where keeping 180 DEG C of states in the resulting pitch colloid of step (4) sieving
Glue fine powder and stabilizer, and 2h is stirred with 4500r/min speed；
(6) the pitch colloid that step (5) mixes is maintained under 180 DEG C of states and develops 6h；
(7) when will be smooth in surface after the full grown pitch colloid cooling of step (6), modified pitch be made.
For verifying the present invention in modified pitch basic performance, using matrix pitch and SBS modified pitch as control group, this hair
The embodiment of bright preparation is experimental group, and test result is as shown in table 1 below:
1 performance of modified bitumen index table of table
For Pavement Performance of Modified Asphalt index in the verifying present invention, preparing AC-20 asphalt with matrix pitch is pair
According to group, the mineral modified pitch replacement matrix pitch of embodiment prepared by the present invention prepares AC-20 asphalt, grade of gathering materials
With being shown in Table 2, surveyed optimum oil-stone ratio is 4.2%, test its preparation asphalt stress and deformation, high-temperature stability and
Water stability, stress and deformation pass through wheel tracking test by stability in Marshall Test and flow valuve measurement, high-temperature stability
Dynamic stability measurement, water stability pass through immersion Marshall test immersion residual stability and indirect tensile test on frozen-thaw freeze-thaw split
Tensile strength ratio TSR measurement, each test result is as shown in table 2 and table 3:
2 AC-20 bituminous mixture aggregate gradation of table
Table 3
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of composite modified pitch of high-performance mineral, which is characterized in that the composite modified pitch of mineral is by following parts by weight
Group be grouped as: 80~86 parts of matrix pitch, 2~6 parts of SBS modifier, 1~4 part of rubber fine powder, 8~14 parts of manganese slag fine powder.
2. the composite modified pitch of a kind of high-performance mineral according to claim 1, it is characterised in that: the matrix pitch is
No. 70 Esso pitches.
3. the composite modified pitch of a kind of high-performance mineral according to claim 1, it is characterised in that: the manganese slag fine powder is thin
Degree is 200~220 mesh, and the manganese slag fine powder is grouped as by the group of following weight: SiO2 >=20.0%, Al2O3≤ 18.0%, CaO
>=35.0%, MgO >=8.0%, Fe2O3≤ 1.5%, SO3≤ 0.50%, MnO >=9.50%, Loss≤1.0%.
4. the composite modified pitch of a kind of high-performance mineral according to claim 1, it is characterised in that: the rubber fine powder is thin
Degree is 80 mesh~220 mesh, and the rubber fine powder is grouped as by the group of following weight: rubber hydrocarbon >=50.0%, carbon black≤35.0%,
Acetone pumping object≤13.0%, natural rubber >=60.0%, ash content≤3.5%, SiO2≤0.5%, ZnO≤1.2%, sulphur≤
1.5%, chemical fibre >=3.0%.
5. a kind of preparation method of the composite modified pitch of high-performance mineral, characterized by the following steps:
(1) it weighs by weight: 80~86 parts of matrix pitch, 2~6 parts of SBS modifier, 1~4 part of rubber fine powder, manganese slag fine powder 8
~14 parts；
(2) monolithic substrate pitch is heated, matrix pitch raw material is made；
(3) SBS modifier is added with the speed of 3500r/min~5000r/min in 180 DEG C~190 DEG C flow regime matrix pitches
Degree shearing grinding 30min-60min；
(4) step (3) are ground into gained pitch colloid and is maintained at 175 DEG C~190 DEG C sievings；
(5) step (4) be sieved resulting pitch colloid be sequentially added into the case where keeping 175 DEG C~190 DEG C states manganese slag fine powder,
Rubber fine powder and stabilizer, and 2h is stirred with 3000r/min~5000r/min speed；
(6) the pitch colloid that step (5) mixes is maintained at development 5h~8h under 175 DEG C~190 DEG C states；
(7) when will be smooth in surface after the full grown pitch colloid cooling of step (6), modified pitch be made.
6. a kind of preparation method of the composite modified pitch of high-performance mineral according to claim 5, it is characterised in that: described
Heating refers to that being placed on 170 DEG C of insulating boxs is heated in step (2).
7. a kind of preparation method of the composite modified pitch of high-performance mineral according to claim 5, it is characterised in that: described
Sieving refers to that the pitch colloid after grinding crosses 100~170 meshes in step (4).
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| CN105176115A (en) * | 2015-10-14 | 2015-12-23 | 辽宁省交通科学研究院 | SBS-rubber powder composite modified asphalt and preparation method thereof |
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