CN103073897A - Environment-friendly and stable asphalt mixture modifier for melting snow and preparation method thereof - Google Patents
Environment-friendly and stable asphalt mixture modifier for melting snow and preparation method thereof Download PDFInfo
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Abstract
The invention discloses environment-friendly and stable asphalt mixture modifier for melting snow. The modifier comprises the following components in part by weight: 60 to 90 parts of porous material, 10 to 40 parts of animal and vegetable oil and 0.1 to 5 parts of inorganic salt. The invention further discloses a preparation method of the environment-friendly and stable asphalt mixture modifier for melting the snow. The modifier provided by the invention has the advantages of stable composition performance of the components, economy, environmental friendliness, simple preparation process and preparation equipment, and stable and efficient use performance, and realizes scientific, reasonable and effective recovery and reuse of waste resources.
Description
Technical field
The invention belongs to the bituminous material field, particularly, relate to a kind of environmental protection stable form asphalt mixed material modifier for snow melt and preparation method thereof.
Background technology
The primary requirement of road performance is security, and next is only the pavement performance of road.The various weather condition such as rain, snow, frost, mist all can the serious harm Road safety.Especially in the severe winter that it is snowing in large flakes, road snow not only damages pavement structure easily, causes especially the driving difficulty, life inconvenience, and road accident rate significantly increases.For this reason, different kinds of roads Snowremoval equipment has appearred, but the problem such as these equipment ubiquities effort is consuming time, and can cause traffic congestion, the road is clear in impact.
Therefore, seeking method and technology from road self is the fundamental way that solves pavement snow melting, and road construction, maintenance and research workers have studied method and the technology of various road snows already.Up to the present, these technology can be divided into two aspects, on the one hand, angle from highway layout, with steel material, wire, the materials such as electrode, equipment and element are introduced the road surface, the principle that heats by electricity, so that the ground surface material of high-insulativity has perception and the transfer capability of heat and electricity, electric power is converted into heat energy, the contact surface of heat energy by surfacing material and ice and snow is to uploading to, and behind the ice and snow absorbing heat, temperature raises gradually, road snow melted remove, this class methods snow melt efficient is high, but larger by implementing difficulty and cost height and power consumption, the pavement performance of road also can't guarantee, just in case occur causing the road surface other potential safety hazard and accident to occur because of the use of such technology, be the primary aim that requires of road just these class methods have deviated from safety; On the other hand, from the pavement material angle, principle according to improving freezing point with salts substances, joins in the compound such as sodium hydroxide, yellow soda ash, villaumite (sodium-chlor, calcium chloride) etc., roll under the effect at capillary pressure and vehicle, the inner salinity in road surface is separated out gradually, thereby reduces the freezing point of road surface water, postpones road surface accumulated snow and freezes, by changing the road surface physicals, reach the purpose of snow melt.These class methods are simple, but poor stability, reason is that these salts substances are subject to rainwash and a large amount of the loss.The inorganic salt that run off are because its corrosive nature, also can pollute road environment on every side, for this reason, people add " inhibiter " in the villaumite Snow Agent, though suppressed to a certain extent corrosion, still have higher chlorine ion concentration, inhibiter mostly is nitrite, in a single day can only be used for Reinforced Concrete Bridge, and go deep into soil meeting polluted underground water, so also not environmental protection.
Unresolved the problems referred to above, the present domestic following patent documentation that mainly exists:
Application number: 201110456252.1, patent name: a kind of efficient snow melt meets modified asphalt mixture and preparation method thereof.Efficient snow melt meets modified asphalt mixture and comprises mineral aggregate 84.0-95.0 part, petroleum pitch 5.5-7.5 part, and rubber grain 1.5-4.0 part, chemical classes suppresses to freeze agent 1.0-4.5 part.This invention suppresses to freeze agent with rubber grain and chemical classes to be added in the compound, carries out the snow melt of opening ice on road surface from two aspects of physics and chemistry.Yet this invention all is to buy from other manufacturers for the chemical classes that reaches its effect and adopt suppresses to freeze agent, has virtually improved production cost.
The material that in addition adopts in the existing snow melt technology mostly is Nonrenewable resources, and along with the fast development of society and economy, resource is petered out, and the especially day by day consumption of Nonrenewable resources allows the mankind progressively be absorbed in without the desirable awkward situation of material.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of environmental protection stable form asphalt mixed material modifier for snow melt is provided.Described modifier components component property is stable, economic environmental protection, and preparation process and Preparation equipment are simple, and use properties is stable, efficient, realizes the science of waste and old resource, rationally, effectively reclaims and recycling.Simultaneously, the present invention also provides a kind of preparation method of the environmental protection stable form asphalt mixed material modifier for snow melt.
In order to achieve the above object, the present invention proposes a kind of environmental protection stable form asphalt mixed material modifier for snow melt, described properties-correcting agent is comprised of following component and weight part thereof: 60～90 parts of porous materials, 10～40 parts of vegetable and animals oils, 0.1～5 part in inorganic salt.
Further preferably, described porous material is one or more in Powdered Activated Carbon, activated carbon granule, activated carbon fiber, carbon black, meso-porous alumina, the activated alumina.Employed porous material, specific surface area is high, receptivity to vegetable and animals oils and inorganic salt is strong, can effectively they be fixed in its little surface and the micropore, effectively avoid inorganics to run off because rainwash is a large amount of, thereby guaranteed the permanent stability of properties-correcting agent Thaw performance of the present invention.
Further preferably, described vegetable and animals oils is selected from one or more in the following oily substance: oil through obtaining after the processing of the oil of the greasy floating matter in the water drain through obtaining after the processing, swill, the oil that poultry fat inferior obtains after processing, the oil in the waste oil residue.
Employed vegetable and animals oils can be strengthened the consistency of porous material and pitch, can effectively reduce the loss of porous material, has further guaranteed the permanent stability of properties-correcting agent of the present invention.Simultaneously, can also to suppress to a certain extent asphaltic road-mix surface course aging for vegetable and animals oils.The source of the vegetable and animals oils that the present invention is selected is exactly a few class main sources of society's " sewer oil " of widely denouncing now in fact, use described regeneration component as one of raw material for preparing regenerator, not only cost performance is high, and environmental protection, can also effectively suppress it by illegal application, especially be applied to field of food, avoid its harm people's health.
Further preferably, described inorganic salt are one or both in slaked lime, the plant ashes.
Employed inorganic salt: slaked lime, plant ashes, it is the resistates of mineral or plant, adopt slaked lime and/or plant ashes to replace salts substances of the prior art, such as sodium hydroxide, yellow soda ash, villaumite (sodium-chlor, calcium chloride) etc., can prevent the pollution to environment, and slaked lime, plant ashes exist quantity large, and obtain easily, economical and practical, saving resource avoids waste.
Further preferably, the particle dia scope of described Powdered Activated Carbon is 0.1～600 μ m, and the micropore diameter scope is 0.1～200nm, and specific surface area is 600～1500m
2/ g; The particle dia scope of described activated carbon fiber is 0.1～600 μ m, and the micropore diameter scope is 0.1～200nm, and specific surface area is 600～1500m
2/ g; The particle dia scope of described activated carbon granule is 0.5～1mm, and the micropore diameter scope is 0.5～300nm, and specific surface area is 300～1100m
2/ g; The particle dia scope of described carbon black is 0.5～1mm, and the micropore diameter scope is 0.5～300nm, and specific surface area is 300～1100m
2/ g; The particle dia scope of described meso-porous alumina is 0.5～1mm, and the micropore diameter scope is 1.5～40nm, and specific surface area is 100～800m
2/ g; The particle dia scope of described activated alumina is 0.5～1mm, and the micropore diameter scope is 0.5～9000nm, and specific surface area is 100～800m
2/ g.
Simultaneously, the present invention also provides a kind of preparation method of the environmental protection stable form asphalt mixed material modifier for snow melt, and described preparation method comprises the steps:
A, reactor is preheated to 60～100 ℃, adds the vegetable and animals oils of 10～40 weight parts, stir 5～10min;
The inorganic salt of B, adding 0.1～5 weight part stir 10～30min;
C, the porous material that adds 60～90 weight parts add, and stir 30～60min, then leave standstill 30～60min, have obtained the mixture that is comprised of vegetable and animals oils, inorganic salt and porous material;
Vegetable and animals oils in the mixture that obtains among D, the removal step C finally obtains described environmental protection stable form asphalt mixed material modifier for snow melt.
Further preferably, the method for removing the vegetable and animals oils in the mixture that obtains among the step C is: with the mixture sedimentation centrifugal device of packing into, with the rotating speed of 2000～10000r/min, centrifugally operated 5～10min can remove the vegetable and animals oils in the mixture.
Beneficial effect of the present invention is:
In the prior art, traditional snow removing snow melt technology adopts snow removal with machine or Snow Agent snow removing mostly, and snow removal with machine efficient is low and cause easily traffic jam, affects people's normal trip; The Snow Agent snow removing, Snow Agent commonly used mainly is salt and alcohols, alcohols has reef knot ice phenomenon, and effect is bad, causes comprehensive cost significantly to rise, there is corrodibility in salt, perishable destruction road bridge construction and Motor vehicles also can pollute soil, atmosphere and water body, destroy ecotope, adopt special chemical classes to suppress to freeze agent and then can promote production cost, uneconomical.And used material mostly is greatly Nonrenewable resources in the existing snow melt technology, causes easily waste.
In this patent, the creationary use slaked lime of contriver and/or plant ashes as inorganic salt and discarded vegetable and animals oils by recycling as the main component of asphalt mixed material modifier, realization is to thawing and the elimination of road snow mantle, economical, environmentally friendly, and do not take existing or resource to be developed, make waste and old resource be able to maximized being recycled, being skillfully constructed possesses outstanding creativeness.Particularly, all economic environmental protection of employed material, and vegetable and animals oils and inorganic salt all are regenerants, cost is low, is the recycling of waste; Employed porous material, specific surface area is high, receptivity to vegetable and animals oils and inorganic salt is strong, can effectively they be fixed in its little surface and the micropore, effectively avoid inorganics to run off because rainwash is a large amount of, thereby guaranteed the permanent stability of properties-correcting agent Thaw performance of the present invention; Employed vegetable and animals oils can be strengthened the consistency of porous material and pitch, can effectively reduce the loss of porous material, has further guaranteed the permanent stability of properties-correcting agent of the present invention.Simultaneously, can also to suppress to a certain extent asphaltic road-mix surface course aging for vegetable and animals oils; Employed inorganics is the resistates of a kind of mineral or plant, exists quantity large, and obtains easily; Process and equipment that the present invention prepares properties-correcting agent are simple, implement easily in actual environment, need not unnecessary specific installation; The use procedure of properties-correcting agent of the present invention is simple, both can directly add among the pitch, also can mix and stir in the process at asphalt to add, and need not specific installation; Properties-correcting agent of the present invention, the melting except effective of road pavement accumulated snow, Snow-melting speed is fast, and the properties-correcting agent consumption is few, only accounts for 0.5% of asphalt total amount.
Embodiment
A kind of environmental protection stable form asphalt mixed material modifier for snow melt provided by the present invention, described properties-correcting agent is comprised of following component and weight part thereof: 60～90 parts of porous materials, 10～40 parts of vegetable and animals oils, 0.1～5 part in inorganic salt.
Described porous material is one or more in Powdered Activated Carbon, activated carbon granule, activated carbon fiber, carbon black, meso-porous alumina, the activated alumina.
Described vegetable and animals oils is selected from one or more in the following oily substance: the oil that the oil that the oil that the greasy floating matter in the water drain obtains after processing, swill obtain after processing, poultry fat inferior obtain after processing, the oil in the waste oil residue.
Particularly, the used regeneration component of the present invention is by processing resulting to following material: with the greasy floating matter in the water drain; Leftovers, leftovers (common name swill) with hotel, restaurant; Pork inferior, haslet, pigskin (being poultry fat inferior); After the oily access times that are used for fried food product surpass certain number of times, be reused again or after wherein adding some fresh oils, reuse (being waste oil residue).Mentioned processing is namely filtered, heats, precipitates, is separated aforementioned substances, thereby obtains oily substance.
Mentioned processing is namely filtered, heats, precipitates, is separated aforementioned substances, thereby obtains oily substance.
Described inorganic salt are one or both in slaked lime, the plant ashes.
The particle dia scope of described Powdered Activated Carbon is 0.1～600 μ m, and the micropore diameter scope is 0.1～200nm, and specific surface area is 600～1500m
2/ g; The particle dia scope of described activated carbon fiber is 0.1～600 μ m, and the micropore diameter scope is 0.1～200nm, and specific surface area is 600～1500m
2/ g; The particle dia scope of described activated carbon granule is 0.5～1mm, and the micropore diameter scope is 0.5～300nm, and specific surface area is 300～1100m
2/ g; The particle dia scope of described carbon black is 0.5～1mm, and the micropore diameter scope is 0.5～300nm, and specific surface area is 300～1100m
2/ g; The particle dia scope of described meso-porous alumina is 0.5～1mm, and the micropore diameter scope is 1.5～40nm, and specific surface area is 100～800m
2/ g; The particle dia scope of described activated alumina is 0.5～1mm, and the micropore diameter scope is 0.5～9000nm, and specific surface area is 100～800m
2/ g.
Simultaneously, the present invention also provides a kind of preparation method of the environmental protection stable form asphalt mixed material modifier for snow melt, and described preparation method comprises the steps:
A, reactor is preheated to 60～100 ℃, adds the vegetable and animals oils of 10～40 weight parts, stir 5～10min;
The inorganic salt of B, adding 0.1～5 weight part stir 10～30min;
C, the porous material that adds 60～90 weight parts add, and stir 30～60min, then leave standstill 30～60min, have obtained the mixture that is comprised of vegetable and animals oils, inorganic salt and porous material;
Vegetable and animals oils in the mixture that obtains among D, the removal step C finally obtains described environmental protection stable form asphalt mixed material modifier for snow melt.
The method of removing the vegetable and animals oils in the mixture that obtains among the step C is: with the mixture sedimentation centrifugal device of packing into, with the rotating speed of 2000～10000r/min, centrifugally operated 5～10min can remove the vegetable and animals oils in the mixture.
Below in conjunction with the implementation example the present invention is carried out a step explanation.
Embodiment 1
The preheating reactor is preheated to 80 ℃ with temperature of reaction kettle, and 30 parts ratio adds vegetable and animals oils (selecting the oil that is refined by the greasy floating matter processing of water drain) by weight, stirs rapidly 6min; Then add 2 parts of plant ashes, stir rapidly 15min; Be 0.5～500 μ m with diameter range afterwards, the micropore diameter scope is 1～100nm, and specific surface area is 800m
2The Powdered Activated Carbon particle of/g adds, and add-on is 68 parts, stirs rapidly 60min, stops afterwards stirring, and naturally leaves standstill 50min; Next the sedimentation tophan pot of mixture being packed into, with the rotating speed of 5000r/min, centrifugally operated 7min; The oil that the greasy floating matter processing by water drain in the last elimination mixture is refined, residual sediment is prepared a kind of environmental protection stable form asphalt mixed material modifier for snow melt.
Embodiment 2
The preheating reactor is preheated to 100 ℃ with temperature of reaction kettle, and 40 parts ratio adds vegetable and animals oils (selecting the oil that is refined by poultry fat processing inferior) by weight, stirs rapidly 9min; Then add 2.5 parts of plant ashes, stir rapidly 15min; Be 0.5～1mm with diameter range afterwards, the micropore diameter scope is 2～40nm, and specific surface area is 400m
2The meso-porous alumina particle of/g adds, and add-on is 57.5 parts, stirs rapidly 40min, stops afterwards stirring, and naturally leaves standstill 40min; Next the sedimentation tophan pot of mixture being packed into, with the rotating speed of 6000r/min, centrifugally operated 6min; The oil by poultry fat processing refinement inferior in the last elimination mixture, residual sediment is prepared a kind of environmental protection stable form asphalt mixed material modifier for snow melt.
Embodiment 3
The preheating reactor, temperature of reaction kettle is preheated to 70 ℃, totally 20 parts ratio (is selected vegetable and animals oils for the access times of fried food product and is surpassed the dregs of fat behind the specified requirement by weight, it is waste oil residue, the mixture of the oily substance that extracts through greasy floating matter processing in the oily substance simply processing, extract and the water drain) adds, stir rapidly 5min; Then add 1 part of slaked lime, stir rapidly 10min; Be 0.8～1mm with diameter range afterwards, the micropore diameter scope is 1～8000nm, and specific surface area is 650m
2The active oxidation aluminum particulate of/g adds, and add-on is 79 parts, stirs rapidly 50min, stops afterwards stirring, and naturally leaves standstill 50min; Next the sedimentation tophan pot of mixture being packed into, with the rotating speed of 9000r/min, centrifugally operated 8min; The access times that are used for fried food product in the last elimination mixture surpass the dregs of fat (being waste oil residue) behind the specified requirement, the mixture of the oily substance that extracts through greasy floating matter processing in the oily substance simply processing, extract and the water drain, residual sediment is prepared a kind of environmental protection stable form asphalt mixed material modifier for snow melt.
Embodiment 4
The preheating reactor, temperature of reaction kettle is preheated to 100 ℃, totally 40 parts ratio adds vegetable and animals oils (selecting the mixture of the oily substance that swill extracts through processing through the oily substance of simply processing, extracting, poultry fat inferior) by weight, stirs rapidly 9min; Then add 5 parts of slaked limes, stir rapidly 25min; Be 0.8～1mm with diameter range afterwards, the micropore diameter scope is 1～8000nm, and specific surface area is 650m
2The active oxidation aluminum particulate of/g adds, and add-on is 55 parts, stirs rapidly 30min, stops afterwards stirring, and naturally leaves standstill 50min; Next the sedimentation tophan pot of mixture being packed into, with the rotating speed of 10000r/min, centrifugally operated 5min; The mixture of the oily substance that the swill in the last elimination mixture extracts through processing through the oily substance of simply processing, extracting, poultry fat inferior, residual sediment is prepared a kind of environmental protection stable form asphalt mixed material modifier for snow melt.
Embodiment 5
Present embodiment will be by the form of preparation Marshall wheel tracking test sample and surface coverage ice cube, and after studying environmental protection stable form pitch of the present invention and asphalt mixed material modifier and being applied to asphalt, Marshall wheel tracking test sample is to the thawing effect of ice and snow.
(1) preparation of properties-correcting agent
The properties-correcting agent that present embodiment is used is made by the preparation method among the embodiment 1～4.
(2) asphalt mixes and stirs preparation with Marshall wheel tracking test sample
According to standard JTG F40-2004 hot-mix asphalt mixture mixing proportion design method, at 165 ℃ of mixs, in 140 ℃ of rolling moulding, take AC-13 as the grating type, carry out the best bitumen aggregate ratio contrived experiment of Marshall, determine that optimum asphalt content is 4.2%.Component and the content of present embodiment Asphalt Mixture see Table 1
Table 1 asphalt forms
(3) use of properties-correcting agent
The use step of properties-correcting agent of the present invention is as follows:
A) preheating Wingdale mineral aggregate to 180 ℃ after batch-type amalgamator temperature rises to 165 ℃, will gather materials rapidly and pour amalgamator into;
B) 70# road traffic pitch is preheated to 160 ℃, then adds rapidly, mix and stir 2.5min;
C) add properties-correcting agent of the present invention, continue to mix and stir 30s;
D) take out asphalt, be cooled to 140 ℃, pour in the standard Marshall rut standard specimen that is of a size of 300mm * 300mm * 50mm, carry out Marshall rut roller-compaction.
(4) snow melt
At 0 ℃, standard atmosphere is depressed, and the Marshall wheel tracking test sample of having used and do not used properties-correcting agent of the present invention is carried out the snow melt simultaneous test.Respectively covering a layer thickness at specification this two breeds of horses Xie Er wheel tracking test specimen surface identical with weight is 5cm, and density is 0.239g/cm
3, total amount is 300cm * 300cm * 5cm * 0.239g, and namely gross weight is the snow of 1075.5g, and the relation of amount of snowmelt amount and time sees Table 2.
The relation of table 2 amount of snowmelt amount and time
As seen from the above table, after for some time, the amount of snowmelt amount of not using the Marshall wheel tracking test sample of properties-correcting agent of the present invention does not change substantially, and the amount of snowmelt amount of having used the Marshall wheel tracking test sample of properties-correcting agent of the present invention significantly increases, and Snow-melting speed is fast.Therefore, a kind of environmental protection stable form asphalt mixed material modifier for snow melt of the present invention is good to Thaw performance, and efficient is high, snow all can be melted in the short period of time to remove.
It should be noted that; above content is the further description of the present invention being done in conjunction with concrete embodiment; can not assert that the specific embodiment of the present invention only limits to this; under above-mentioned guidance of the present invention; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in protection scope of the present invention.
Claims (7)
1. an environmental protection stable form asphalt mixed material modifier that is used for snow melt is characterized in that described properties-correcting agent is comprised of following component and weight part thereof: 60～90 parts of porous materials, 10～40 parts of vegetable and animals oils, 0.1～5 part in inorganic salt.
2. a kind of environmental protection stable form asphalt mixed material modifier for snow melt according to claim 1 is characterized in that,
Described porous material is one or more in Powdered Activated Carbon, activated carbon granule, activated carbon fiber, carbon black, meso-porous alumina, the activated alumina.
3. a kind of environmental protection stable form asphalt mixed material modifier for snow melt according to claim 1 is characterized in that,
Described vegetable and animals oils is selected from one or more in the following oily substance: the oil that the oil that the oil that the greasy floating matter in the water drain obtains after processing, swill obtain after processing, poultry fat inferior obtain after processing, the oil in the waste oil residue.
4. a kind of environmental protection stable form asphalt mixed material modifier for snow melt according to claim 1 is characterized in that,
Described inorganic salt are one or both in slaked lime, the plant ashes.
5. a kind of environmental protection stable form asphalt mixed material modifier for snow melt according to claim 2 is characterized in that,
The particle dia scope of described Powdered Activated Carbon is 0.1～600 μ m, and the micropore diameter scope is 0.1～200nm, and specific surface area is 600～1500m
2/ g;
The particle dia scope of described activated carbon fiber is 0.1～600 μ m, and the micropore diameter scope is 0.1～200nm, and specific surface area is 600～1500m
2/ g;
The particle dia scope of described activated carbon granule is 0.5～1mm, and the micropore diameter scope is 0.5～300nm, and specific surface area is 300～1100m
2/ g;
The particle dia scope of described carbon black is 0.5～1mm, and the micropore diameter scope is 0.5～300nm, and specific surface area is 300～1100m
2/ g;
The particle dia scope of described meso-porous alumina is 0.5～1mm, and the micropore diameter scope is 1.5～40nm, and specific surface area is 100～800m
2/ g;
The particle dia scope of described activated alumina is 0.5～1mm, and the micropore diameter scope is 0.5～9000nm, and specific surface area is 100～800m
2/ g.
6. the preparation method such as each described environmental protection stable form asphalt mixed material modifier for snow melt in the claim 1～5 is characterized in that described preparation method comprises the steps:
A, reactor is preheated to 60～100 ℃, adds the vegetable and animals oils of 10～40 weight parts, stir 5～10min;
The inorganic salt of B, adding 0.1～5 weight part stir 10～30min;
C, the porous material that adds 60～90 weight parts add, and stir 30～60min, then leave standstill 30～60min, have obtained the mixture that is comprised of vegetable and animals oils, inorganic salt and porous material;
Vegetable and animals oils in the mixture that obtains among D, the removal step C finally obtains described environmental protection stable form asphalt mixed material modifier for snow melt.
7. the preparation method of a kind of environmental protection stable form asphalt mixed material modifier for snow melt according to claim 6 is characterized in that,
The method of removing the vegetable and animals oils in the mixture that obtains among the step C is: with the mixture sedimentation centrifugal device of packing into, with the rotating speed of 2000～10000r/min, centrifugally operated 5～10min can remove the vegetable and animals oils in the mixture.
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| CN103073897B (en) | 2015-06-10 |
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