CN109809725A - Environment-friendly type warm mix anti-rut agent, preparation method and the method for preparing asphalt - Google Patents
Environment-friendly type warm mix anti-rut agent, preparation method and the method for preparing asphalt Download PDFInfo
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- CN109809725A CN109809725A CN201910215577.7A CN201910215577A CN109809725A CN 109809725 A CN109809725 A CN 109809725A CN 201910215577 A CN201910215577 A CN 201910215577A CN 109809725 A CN109809725 A CN 109809725A
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention belongs to road asphalt mixture technical field of modification, are related to a kind of environment-friendly type warm mix anti-rut agent, it is made of raw material from the following weight: 100 parts of modified host crystal, 8~18 parts of warm-mixing agent, 3-8 parts of filler, 10~28 parts of auxiliary agent；Modified host crystal is mixed by waste plastics powder and waste Crumb rubber, and wherein the mass content of waste plastics powder is 30%~45%, and surplus is waste Crumb rubber, and the granularity of waste Crumb rubber is 40~80 mesh；Warm-mixing agent is Sasobit, and filler is natural diatomaceous earth, and auxiliary agent is Petropols.The method that also proposed the preparation method of this kind of environment-friendly type warm mix anti-rut agent simultaneously and prepare asphalt using kind of environment-friendly type warm mix anti-rut agent.The present invention organically combines warm mix technology and the method for addition anti-rut agent, significantly improves the high temperature stability performance and water stabilizing of asphalt, while improving the high temperature stability and durability of asphalt.
Description
Technical field
The invention belongs to road asphalt mixture technical field of modification, it is related to a kind of environment-friendly type warm mix anti-rut agent, this kind
The preparation method of environment-friendly type warm mix anti-rut agent and asphalt is prepared using kind of environment-friendly type warm mix anti-rut agent
Method.
Background technique
Bituminous concrete is widely used in the surface layer construction of highway, municipal road and airfield runway.With traffic
Amount increases, axis is carried and aggravated and the appearance of canalized traffic phenomenon, so that the track problem of bituminous pavement is increasingly severe, especially summer
The higher place of season mean temperature, this problem are especially prominent.It is asked to successfully manage bituminous pavement using the track of middle appearance
Topic, reduces the generation of high temperature track disease, and road worker uses many measures to improve the applied at elevated temperature of asphalt
Performance.One of solution route is exactly to use anti-rut agent, and anti-rut agent refers to that prevent asphalt pavement rut disease be main
The asphalt modifier of application purpose, it is acted on by embedded squeezing effect, reinforced action, cementation, recoverable force so that pitch is mixed
It closes material and resists the enhancing of high temperature pavement disease ability.Engineering practice and experimental study show to add graininess in asphalt
It is a kind of effectively convenient method that additive, which carries out property modification,.Therefore, insufficient for asphalt high temperature stability
The problem of, graininess anti-rutting additive is developed to improve bituminous pavement be effective.
Waste plastic is China's conventional solid waste, since plastics usage amount is big, it is difficult to decompose, is held when mishandling
Easily formed large area " white pollution ", how these discarded plastics of recycling and reusing become current efforts at environmental protection a weight
Point.
Summary of the invention
The purpose of the present invention is to propose to a kind of environment-friendly type warm mix anti-rut agent, solves bituminous concrete in the prior art and exist
Track problem, meanwhile, the invention proposes the preparation method of this kind of environment-friendly type warm mix anti-rut agent and use kind of an environment-friendly type temperature
The method for mixing anti-rut agent to prepare asphalt.
To achieve the above object, present invention employs following technical solutions.
Environment-friendly type warm mix anti-rut agent, it is made of raw material from the following weight: 100 parts of modified host crystal, warm-mixing agent 8~18
Part, 3-8 parts of filler, 10~28 parts of auxiliary agent；The modified host crystal is mixed by waste plastics powder and waste Crumb rubber, wherein useless modeling
The mass content of feed powder is 30%~45%, and surplus is waste Crumb rubber, and the granularity of the waste Crumb rubber is 40~80 mesh；The temperature
Mixing agent is Sasobit, and the filler is natural diatomaceous earth, and the auxiliary agent is Petropols.
Further, the environment-friendly type warm mix anti-rut agent is made of raw material from the following weight: 100 parts of modified host crystal,
In modified host crystal the mass content of waste plastics powder be 35%, 12 parts of warm-mixing agent, 6 parts of filler, 15 parts of auxiliary agent.
Further, the auxiliary agent is C9 Petropols.
Meanwhile a kind of method for preparing environment-friendly type warm mix anti-rut agent proposed by the present invention, the preparation method detailed process
Are as follows: modified host crystal and auxiliary agent are uniformly mixed and are kneaded at 185 DEG C~195 DEG C, modified masterbatch is obtained, it then will filling
The modification masterbatch is added in agent, warm-mixing agent, and is delivered to the second mixing section, and the temperature control of the second mixing section is 80 DEG C~90
DEG C, mixing time be 30min~45min, be sufficiently mixed uniformly after be delivered to double screw extruder outlet, extruded velocity be 40~
50r/min, pelleter obtain cylindrical body environment-friendly type warm mix anti-rut agent after being granulated.
Further, temperature control is within the scope of 70 DEG C~90 DEG C when the pelleter is granulated.
Further, include using the method for environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture
Following steps: Step 1: using continuous close-graded AC13 or AC20, warm mix anti-rut agent is added to by matrix by dry process
In pitch, stirring preparation warm mix anti-rutting asphalt mixture；The quality of the warm mix anti-rut agent accounts for the warm mix Rut resistance drip
The 0.3%~0.8% of green mixture total mass；Preparation process is to be heated and stirred to gathering materials first, is heated to gathering materials
155~161 DEG C, stir at least 60s；Then the warm mix anti-rut agent is added and sprays into the drip that temperature is 130 DEG C~150 DEG C
Blueness stirs at least 90s；Miberal powder is added later, stirs at least 90s, obtains warm mix anti-rutting asphalt mixture；Step 2: passing through
Marshall's method determines the optimum oil-stone ratio of warm mix anti-rutting asphalt mixture.
Further, matrix pitch described in above-mentioned steps one is 70# pitch, and technical performance index meets " highway drip
Green pavement construction technical specification " (JTG F40-2004) requirement, heating temperature is 155 DEG C.
Further, continuous close-graded AC13 or AC20 described in above-mentioned steps one is according to " asphalt highway construction skill
Art specification " AC13 or AC20 gradation upper and lower limits carry out gradation design in (JTG F40-2004).
Further, marshall's method determines optimum oil-stone ratio in above-mentioned steps two, the initial bitumen aggregate ratio of AC-13 is 4.0%,
4.5%, 5.0%, 5.5%, 6.0%, Design Air Voids 4.0%；The initial bitumen aggregate ratio of AC-20 be 3.0%, 3.5%, 4.0%,
4.5%, 5.0%, Design Air Voids 5.0%.
Further, when marshall's method determines optimum oil-stone ratio in above-mentioned steps two, marshal piece compacting temperature is 146
℃。
The marshall's method is one kind of asphalt mixture mixing proportion design method, it will be understood by those skilled in the art that belonging to
In well-known technique.
The modified host crystal masterbatch of environment-friendly type warm mix Rut resistance addition of the present invention is mixed by waste plastics powder and waste Crumb rubber,
Deficiency existing for waste plastics powder is made up by waste Crumb rubber, modified host crystal masterbatch uses waste plastics powder, waste Crumb rubber and petroleum tree
Rouge auxiliary agent is made by high-temperature mixing.Waste plastics powder belongs to type thermoplastic resin material, can be improved the high temperature of asphalt
Stability, but cure hard after cooling down；Waste Crumb rubber is rubber type of material, and the addition of waste Crumb rubber can make up for it the change of waste plastics powder
Hard drawback makes asphalt have elasticity and toughness, while durability being made to make moderate progress, and asphalt is made to have both high temperature
Stability, low-temperature stability and durability.
It is not that the higher the better using the rubber powder mesh number that Rubber Crumb Modified Asphalt Mixture uses, nor it is smaller poorer,
There is certain suitable range.It is theoretical to pitch or asphalt study on the modification and colloform texture according to rubber powder number it is found that
With the increase of rubber powder mesh number, the rubber powder specific surface area of unit mass increases, swelling ratio increases, while rubber powder also more holds
It is easily mixed with asphalt, the modified effect reached is better.But there is also certain peak value, rubber powder mesh for swelling ratio increase
After number reaches certain numerical value, then increase rubber powder mesh number, improvement is unobvious, and can seriously increase rubber powder preparation and make
Valence.Therefore the present invention has selected the waste Crumb rubber of 40~80 mesh numbers to be prepared as modified host crystal, and asphalt modification effect is made to reach best.
In the method for preparation environment-friendly type warm mix anti-rut agent of the invention, it is kneaded method using two stages, the first stage is in height
It acts under temperature effect by strong mechanical shearing, so that waste plastics powder and waste Crumb rubber are melted and are swollen respectively, and occurs
Chemical graft reaction；Second stage in view of warm-mixing agent Sasobit fusing point at 100 DEG C or so, therefore second stage use compared with
Low temperature ensures that the structure of warm-mixing agent is not destroyed, mainly by mechanical and shear action, so that filler diatomite and temperature
It mixes agent Sasobit and the first stage is kneaded modified masterbatch obtained and is sufficiently mixed mixing.In the first mix stage, it is based on power
Principle is learned, waste Crumb rubber is had an effect with the light components in auxiliary agent first, and waste Crumb rubber particle gradually softens, reticular structure quilt
It strutting, moieties structure is cracked into chain structure by tridimensional network, under high temperature and mechanical shearing stirring action, modeling of giving up
It is displaced between the concurrent son estranged of material particle fusion, generates unsaturated bond, be cracked into chain knot in unsaturated bond and waste Crumb rubber particle
Chemical graft reaction occurs for the molecule of structure, combines waste Crumb rubber particle closely with waste plastics powder, forms homogeneous system, and
Part waste Crumb rubber particle has restored the property of raw rubber, and viscosity and plasticity greatly improve, and helps to improve asphalt height
Temperature stability and low-temperature cracking-resistance.And the processing temperature of waste Crumb rubber is there are a reasonable temperature range, temperature is higher, rubber of giving up
The easier dispersion of rubber powder, easier swelling.But if it is higher than 200 DEG C, the desulfurization inside waste Crumb rubber is also more serious, therefore it is required that useless
Waste Crumb rubber is easily dispersed and not generate serious desulphurization reaction in rubber powder processing.Therefore, waste Crumb rubber rationally processes temperature
It is 180~200 DEG C that degree, which should control, while the present invention considers the high-temperature fusion of waste plastics powder, selects 185 DEG C~195 DEG C of mixing
Temperature.
The present invention is the wrapping property for improving asphalt binder by its porosity Yu gathering materials using natural diatomaceous earth, is improved
The anti-water damage and durability of asphalt.
The present invention produces following beneficial effect compared with prior art.(1) by warm mix technology and addition anti-rut agent
Method organically combine, significantly improve the high temperature stability performance and water stabilizing of asphalt, improve simultaneously
The high temperature stability and durability of asphalt.(2) modified host crystal is made as original using waste plastics and scrap rubber
Material, has not only lacked the white garbage waste plastics and black garbage waste rubber tire in environment, has reduced energy consumption, be conducive to simultaneously
Environment is protected, the energy is saved, turns waste into wealth.(3) preparation process and application method proposed is simple and environmental benefit and economy are imitated
It is beneficial significant, it is able to extend the service life of bituminous pavement after use, has broad application prospects in technical field of road engineering.
Specific embodiment
Embodiment 1
Environment-friendly type warm mix anti-rut agent in the present embodiment is made of raw material from the following weight: 100 parts of modified host crystal, temperature
Mix 12 parts of agent, 6 parts of filler, 15 parts of auxiliary agent.Wherein, modified host crystal is mixed by waste plastics powder and waste Crumb rubber, modified master
The mass content of waste plastics powder is 35% in agent, and surplus is waste Crumb rubber；Warm-mixing agent is Sasobit；Filler is natural diatom
Soil；Auxiliary agent is C9 Petropols.The granularity of the waste Crumb rubber is preferably 80 mesh.
Prepare the detailed process of above-mentioned environment-friendly type warm mix anti-rut agent are as follows: be uniformly mixed modified host crystal and auxiliary agent
It is kneaded at 185 DEG C~195 DEG C, obtains modified masterbatch, then filler, warm-mixing agent are added in the modification masterbatch,
And it is delivered to the second mixing section.The control of second mixing section temperature is 80 DEG C~90 DEG C, and mixing time is 30min~45min, sufficiently
It is delivered to double screw extruder outlet after mixing, extruded velocity is 40~50r/min, and pelleter obtains cylindrical body after being granulated
Environment-friendly type warm mix anti-rut agent, temperature control is at 90 DEG C when the pelleter is granulated.
Further, using the method for above-mentioned environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture, packet
Include following steps.
Step 1: warm mix anti-rut agent is added in matrix pitch by dry process using continuous close-graded AC13,
Stirring preparation warm mix anti-rutting asphalt mixture.Wherein, the warm mix anti-rut agent mixture proportion is 0.5%, that is, warm mix
The quality of anti-rut agent accounts for the 0.5% of the warm mix anti-rutting asphalt mixture total mass.
Wherein, according to AC-13 gradation bound model in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004)
Carry out gradation design is enclosed, determines design level with as shown in table 1.
Table 1:AC-13 design level is matched
Step 2: determining the optimum oil-stone ratio of warm mix anti-rutting asphalt mixture by marshall's method.
Match to weigh according to design level and gather materials, initial bitumen aggregate ratio is 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, will be warm
Degree is added agitated kettle and stirs 60s for 155~161 DEG C gather materials, and it is 0.5% warm mix anti-rut agent that volume, which is then added, according to
Bitumen aggregate ratio sprays into the pitch pitch that quantitative temperature is 130 DEG C~150 DEG C, stirs 90s, and miberal powder is added later, stirs 90s, obtains
Warm mix anti-rutting asphalt mixture.It is wanted according to " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTG E20-2011)
Type of hoping for success marshal piece, forming temperature are 146 DEG C.
In order to be further improved, by the test specimen of forming after testing its physical index, it is put into 60 DEG C of water bath with thermostatic control
Keep the temperature 30min-40min, its stability of last test and flow valuve.According to Marshall Test and calculated result, in conjunction with design gap
Rate determines that AC-13 optimum oil-stone ratio is 4.8%.
Warm mix anti-rutting asphalt mixture is prepared under optimum oil-stone ratio, according to " highway engineering pitch and asphalt
Testing regulations " (JTG E20-2011) middle requirement, marshal piece and track plate are formed, according to test side specified in regulation
Method, carries out high-temperature stability to warm mix anti-rutting asphalt mixture, low-temperature cracking-resistance, water stability are tested, and with " highway
Asphalt Pavement Construction Technique specification " SMA modified asphalt mixture performance indicator requires to compare in (JTG F40-2004), it tests
It the results are shown in Table 2.
Embodiment 2
Environment-friendly type warm mix anti-rut agent in the present embodiment is made of raw material from the following weight: 100 parts of modified host crystal, temperature
Mix 12 parts of agent, 6 parts of filler, 15 parts of auxiliary agent.Wherein, modified host crystal is mixed by waste plastics powder and waste Crumb rubber, modified master
The mass content of waste plastics powder is 35% in agent, and surplus is waste Crumb rubber；Warm-mixing agent is Sasobit；Filler is natural diatom
Soil；Auxiliary agent is C9 Petropols.The granularity of the waste Crumb rubber is preferably 80 mesh.
Prepare the detailed process of above-mentioned environment-friendly type warm mix anti-rut agent are as follows: be uniformly mixed modified host crystal and auxiliary agent
It is kneaded at 185 DEG C~195 DEG C, obtains modified masterbatch, then filler, warm-mixing agent are added in the modification masterbatch,
And it is delivered to the second mixing section.The control of second mixing section temperature is 80 DEG C~90 DEG C, and mixing time is 30min~45min, sufficiently
It is delivered to double screw extruder outlet after mixing, extruded velocity is 40~50r/min, and pelleter obtains cylindrical body after being granulated
Environment-friendly type warm mix anti-rut agent, temperature control is at 90 DEG C when the pelleter is granulated.
Further, using the method for above-mentioned environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture, packet
Include following steps.
Step 1: warm mix anti-rut agent is added in matrix pitch by dry process using continuous close-graded AC13,
Stirring preparation warm mix anti-rutting asphalt mixture.Wherein the warm mix anti-rut agent mixture proportion is 0.75%, that is,
The quality of warm mix anti-rut agent accounts for the 0.75% of the warm mix anti-rutting asphalt mixture total mass.
Wherein, according to AC-13 gradation bound model in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004)
Carry out gradation design is enclosed, determines that design level is matched as shown in the table 1 in embodiment 1.
Step 2: determining the optimum oil-stone ratio of warm mix anti-rutting asphalt mixture by marshall's method.
Match to weigh according to design level and gather materials, initial bitumen aggregate ratio is 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, will be warm
Degree is added agitated kettle and stirs 60s for 155~161 DEG C gather materials, and the warm mix anti-rut agent that volume is 0.75%, root is then added
The pitch pitch that quantitative temperature is 130 DEG C~150 DEG C is sprayed into according to bitumen aggregate ratio, stirs 90s, miberal powder is added later, 90s is stirred, obtains
To warm mix anti-rutting asphalt mixture.According to " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTG E20-2011)
It is required that molding marshal piece, forming temperature is 146 DEG C.
In order to be further improved, by the test specimen of forming after testing its physical index, it is put into 60 DEG C of water bath with thermostatic control
Keep the temperature 30min-40min, its stability of last test and flow valuve.According to Marshall Test and calculated result, in conjunction with design gap
Rate determines that AC-13 optimum oil-stone ratio is 4.8%.
Warm mix anti-rutting asphalt mixture is prepared under optimum oil-stone ratio, according to " highway engineering pitch and asphalt
Testing regulations " (JTG E20-2011) middle requirement, marshal piece and track plate are formed, according to test side specified in regulation
Method, carries out high-temperature stability to warm mix anti-rutting asphalt mixture, low-temperature cracking-resistance, water stability are tested, and with " highway
Asphalt Pavement Construction Technique specification " SMA modified asphalt mixture performance indicator requires to compare in (JTG F40-2004), it tests
It the results are shown in Table 2.
The warm mix anti-rutting asphalt mixture technical indicator test result of 2 Examples 1 and 2 of table preparation
From Table 2, it can be seen that being prepared in embodiment 1 and embodiment 2 using environment-friendly type warm mix anti-rut agent of the invention
Warm mix anti-rutting asphalt mixture all indicators are better than the technical requirements of SMA modified asphalt mixture, meet heavy duty and hand over
Logical technical requirements have good high-temperature behavior and stronger anti-rut behavior.
Show that there is the environment-friendly type warm mix anti-rut agent good cost performance can adjust according to engineering actual demand simultaneously
Whole additive volume, obtains the asphalt of estimated performance.
Embodiment 3
Environment-friendly type warm mix anti-rut agent in the present embodiment is made of raw material from the following weight: 100 parts of modified host crystal, temperature
Mix 15 parts of agent, 4 parts of filler, 20 parts of auxiliary agent.Wherein, modified host crystal is mixed by waste plastics powder and waste Crumb rubber, modified master
The mass content of waste plastics powder is 40% in agent, and surplus is waste Crumb rubber；Warm-mixing agent is Sasobit；Filler is natural diatom
Soil；Auxiliary agent is C9 Petropols.The granularity of the waste Crumb rubber is preferably 80 mesh.
Prepare the detailed process of above-mentioned environment-friendly type warm mix anti-rut agent are as follows: be uniformly mixed modified host crystal and auxiliary agent
It is kneaded at 185 DEG C~195 DEG C, obtains modified masterbatch, then filler, warm-mixing agent are added in the modification masterbatch,
And it is delivered to the second mixing section.The control of second mixing section temperature is 80 DEG C~90 DEG C, and mixing time is 30min~45min, sufficiently
It is delivered to double screw extruder outlet after mixing, extruded velocity is 40~50r/min, and pelleter obtains cylindrical body after being granulated
Environment-friendly type warm mix anti-rut agent, temperature control is at 90 DEG C when the pelleter is granulated.
Further, using the method for above-mentioned environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture, packet
Include following steps.
Step 1: warm mix anti-rut agent is added in matrix pitch by dry process using continuous close-graded AC20,
Stirring preparation warm mix anti-rutting asphalt mixture.Wherein the warm mix anti-rut agent mixture proportion is 0.5%, that is, temperature
The quality for mixing anti-rut agent accounts for the 0.5% of the warm mix anti-rutting asphalt mixture total mass.
Wherein, according to AC-20 gradation bound model in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004)
Carry out gradation design is enclosed, determines design level with as shown in table 3.
3 AC-20 design level of table is matched
Step 2: determining the optimum oil-stone ratio of warm mix anti-rutting asphalt mixture by marshall's method.
Match to weigh according to design level and gather materials, initial bitumen aggregate ratio is 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, by temperature
Agitated kettle is added for 155~161 DEG C gather materials and stirs 60s, the warm mix anti-rut agent that volume is 0.5% is then added, according to
Bitumen aggregate ratio sprays into the pitch pitch that quantitative temperature is 130 DEG C~150 DEG C, stirs 90s, and miberal powder is added later, stirs 90s, obtains
Warm mix anti-rutting asphalt mixture.It is wanted according to " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTG E20-2011)
Type of hoping for success marshal piece, forming temperature are 146 DEG C.
In order to be further improved, by the test specimen of forming after testing its physical index, it is put into 60 DEG C of water bath with thermostatic control
Keep the temperature 30min-40min, its stability of last test and flow valuve.According to Marshall Test and calculated result, in conjunction with design gap
Rate determines that AC-20 optimum oil-stone ratio is 4.2%.
Warm mix anti-rutting asphalt mixture is prepared under optimum oil-stone ratio, according to " highway engineering pitch and asphalt
Testing regulations " (JTG E20-2011) middle requirement, marshal piece and track plate are formed, according to test side specified in regulation
Method, carries out high-temperature stability to warm mix anti-rutting asphalt mixture, low-temperature cracking-resistance, water stability are tested, and with " highway
Asphalt Pavement Construction Technique specification " SMA modified asphalt mixture performance indicator requires to compare in (JTG F40-2004), it tests
As a result see the table 4 in embodiment 4.
Embodiment 4
Environment-friendly type warm mix anti-rut agent in the present embodiment is made of raw material from the following weight: 100 parts of modified host crystal, temperature
Mix 8 parts of agent, 8 parts of filler, 24 parts of auxiliary agent.Wherein, modified host crystal is mixed by waste plastics powder and waste Crumb rubber, modified host crystal
The mass content of middle waste plastics powder is 45%, and surplus is waste Crumb rubber；Warm-mixing agent is Sasobit；Filler is natural diatomaceous earth；
Auxiliary agent is C9 Petropols.The granularity of the waste Crumb rubber is preferably 80 mesh.
Prepare the detailed process of above-mentioned environment-friendly type warm mix anti-rut agent are as follows: be uniformly mixed modified host crystal and auxiliary agent
It is kneaded at 185 DEG C~195 DEG C, obtains modified masterbatch, then filler, warm-mixing agent are added in the modification masterbatch,
And it is delivered to the second mixing section.The control of second mixing section temperature is 80 DEG C~90 DEG C, and mixing time is 30min~45min, sufficiently
It is delivered to double screw extruder outlet after mixing, extruded velocity is 40~50r/min, and pelleter obtains cylindrical body after being granulated
Environment-friendly type warm mix anti-rut agent, temperature control is at 90 DEG C when the pelleter is granulated.
Further, using the method for above-mentioned environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture, packet
Include following steps.
Step 1: warm mix anti-rut agent is added in matrix pitch by dry process using continuous close-graded AC20,
Stirring preparation warm mix anti-rutting asphalt mixture.Wherein the warm mix anti-rut agent mixture proportion is 0.35%, that is,
The quality of warm mix anti-rut agent accounts for the 0.35% of the warm mix anti-rutting asphalt mixture total mass.
Wherein, according to AC-20 gradation bound model in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004)
Carry out gradation design is enclosed, determines that design level is matched as shown in the table 3 in embodiment 3.
Step 2: determining the optimum oil-stone ratio of warm mix anti-rutting asphalt mixture by marshall's method.
Match to weigh according to design level and gather materials, initial bitumen aggregate ratio is 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, will be warm
Degree is added agitated kettle and stirs 60s for 155~161 DEG C gather materials, and the warm mix anti-rut agent that volume is 0.35%, root is then added
The pitch pitch that quantitative temperature is 130 DEG C~150 DEG C is sprayed into according to bitumen aggregate ratio, stirs 90s, miberal powder is added later, 90s is stirred, obtains
To warm mix anti-rutting asphalt mixture.According to " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTG E20-2011)
It is required that molding marshal piece, forming temperature is 146 DEG C.
In order to be further improved, by the test specimen of forming after testing its physical index, it is put into 60 DEG C of water bath with thermostatic control
Keep the temperature 30min-40min, its stability of last test and flow valuve.According to Marshall Test and calculated result, in conjunction with design gap
Rate determines that AC-20 optimum oil-stone ratio is 4.2%.
Warm mix anti-rutting asphalt mixture is prepared under optimum oil-stone ratio, according to " highway engineering pitch and asphalt
Testing regulations " (JTG E20-2011) middle requirement, marshal piece and track plate are formed, according to test side specified in regulation
Method, carries out high-temperature stability to warm mix anti-rutting asphalt mixture, low-temperature cracking-resistance, water stability are tested, and with " highway
Asphalt Pavement Construction Technique specification " SMA modified asphalt mixture performance indicator requires to compare in (JTG F40-2004), it tests
It the results are shown in Table 4.
The warm mix anti-rutting asphalt mixture technical indicator test result of 4 embodiment 3 and 4 of table preparation
As can be seen from Table 4, it is prepared in embodiment 1 and embodiment 2 using environment-friendly type warm mix anti-rut agent of the invention
Warm mix anti-rutting asphalt mixture all indicators are better than the technical requirements of SMA modified asphalt mixture, meet heavy duty and hand over
Logical technical requirements have good high-temperature behavior and stronger anti-rut behavior.
Show that there is the environment-friendly type warm mix anti-rut agent good cost performance can adjust according to engineering actual demand simultaneously
Whole additive volume, obtains the asphalt of estimated performance.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although referring to aforementioned reality
Applying example, invention is explained in detail, for those of ordinary skill in the art, still can be to aforementioned implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these are modified or replace
It changes, the spirit and scope for claimed technical solution of the invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. environment-friendly type warm mix anti-rut agent, which is characterized in that it is made of raw material from the following weight: 100 parts of modified host crystal, temperature
Mix 8~18 parts of agent, 3-8 parts of filler, 10~28 parts of auxiliary agent；The modified host crystal by waste plastics powder and waste Crumb rubber mixing and
At, wherein the mass content of waste plastics powder is 30%~45%, and surplus is waste Crumb rubber, the granularity of the waste Crumb rubber is 40~
80 mesh；The warm-mixing agent is Sasobit, and the filler is natural diatomaceous earth, and the auxiliary agent is Petropols.
2. a kind of environment-friendly type warm mix anti-rut agent according to claim 1, which is characterized in that it by following parts by weight original
Material is made: 100 parts of modified host crystal, in modified host crystal the mass content of waste plastics powder be 35%, 12 parts of warm-mixing agent, 6 parts of filler,
15 parts of auxiliary agent.
3. a kind of environment-friendly type warm mix anti-rut agent according to claim 1 or 2, which is characterized in that the auxiliary agent is C9 stone
Oleoresin.
4. a kind of method for preparing environment-friendly type warm mix anti-rut agent, the environment-friendly type warm mix anti-rut agent is according to claim 1 to 3
Any one of described in, which is characterized in that the preparation method detailed process are as follows: modified host crystal and auxiliary agent are uniformly mixed at 185 DEG C
It is kneaded at~195 DEG C, obtains modified masterbatch, the modification masterbatch then is added in filler, warm-mixing agent, and be delivered to
The temperature control of second mixing section, the second mixing section is 80 DEG C~90 DEG C, and mixing time is 30min~45min, is sufficiently mixed
Double screw extruder outlet is delivered to after even, extruded velocity is 40~50r/min, and pelleter obtains cylindrical body environment-friendly type after being granulated
Warm mix anti-rut agent.
5. a kind of method for preparing environment-friendly type warm mix anti-rut agent according to claim 4, which is characterized in that the pelletizing
Temperature control is within the scope of 70 DEG C~90 DEG C when machine is granulated.
6. using the method for environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture, the anti-vehicle of environment-friendly type warm mix
Described in rut agent according to claim 1~any one of 3 or it is prepared using method according to claim 4 or 5,
It is characterized in that, comprising the following steps:
Step 1: warm mix anti-rut agent is added to matrix pitch by dry process using continuous close-graded AC13 or AC20
In, stirring preparation warm mix anti-rutting asphalt mixture；It is mixed that the quality of the warm mix anti-rut agent accounts for the warm mix anti-rutting asphalt
Close the 0.3%~0.8% of material gross mass；Preparation process is to be heated and stirred to gathering materials first, will gather materials be heated to 155~
161 DEG C, stir at least 60s；Then the warm mix anti-rut agent is added and sprays into the pitch that temperature is 130 DEG C~150 DEG C, stirring
At least 90s；Miberal powder is added later, stirs at least 90s, obtains warm mix anti-rutting asphalt mixture；
Step 2: determining the optimum oil-stone ratio of warm mix anti-rutting asphalt mixture by marshall's method.
7. according to claim 6 a kind of using environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture
Method, which is characterized in that matrix pitch described in step 1 is 70# pitch, and technical performance index meets " asphalt highway
Construction technique normalizing " (JTG F40-2004) requirement, heating temperature is 155 DEG C.
8. according to claim 6 a kind of using environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture
Method, which is characterized in that continuous close-graded AC13 or AC20 described in step 1 is according to " asphalt highway construction technology is advised
Model " AC13 or AC20 gradation upper and lower limits carry out gradation design in (JTG F40-2004).
9. according to claim 6 a kind of using environment-friendly type warm mix anti-rut agent preparation warm mix anti-rutting asphalt mixture
Method, which is characterized in that marshall's method determines optimum oil-stone ratio in step 2, the initial bitumen aggregate ratio of AC-13 is 4.0%, 4.5%,
5.0%, 5.5%, 6.0%, Design Air Voids 4.0%；The initial bitumen aggregate ratio of AC-20 be 3.0%, 3.5%, 4.0%, 4.5%,
5.0%, Design Air Voids 5.0%.
10. a kind of application environment-friendly type warm mix anti-rut agent according to claim 6 prepares warm mix anti-rutting asphalt mixture
Method, which is characterized in that when marshall's method determines optimum oil-stone ratio in step 2, marshal piece compacting temperature be 146 DEG C.
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